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user-links-collapsible-item"><a data-mw="interface" href="//donate.wikimedia.org/wiki/Special:FundraiserRedirector?utm_source=donate&utm_medium=sidebar&utm_campaign=C13_it.wikipedia.org&uselang=it" class=""><span>Fai una donazione</span></a> </li> <li id="pt-createaccount-2" class="user-links-collapsible-item mw-list-item user-links-collapsible-item"><a data-mw="interface" href="/w/index.php?title=Speciale:CreaUtenza&returnto=Neutrone" title="Si consiglia di registrarsi e di effettuare l'accesso, anche se non è obbligatorio" class=""><span>registrati</span></a> </li> <li id="pt-login-2" class="user-links-collapsible-item mw-list-item user-links-collapsible-item"><a data-mw="interface" href="/w/index.php?title=Speciale:Entra&returnto=Neutrone" title="Si consiglia di effettuare l'accesso, anche se non è obbligatorio [o]" accesskey="o" class=""><span>entra</span></a> </li> </ul> </div> </div> </div> <div id="vector-user-links-dropdown" class="vector-dropdown vector-user-menu 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mw-portlet-user-menu-anon-editor" > <div class="vector-menu-heading"> Pagine per utenti anonimi <a href="/wiki/Aiuto:Benvenuto" aria-label="Ulteriori informazioni sulla contribuzione"><span>ulteriori informazioni</span></a> </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="pt-anoncontribs" class="mw-list-item"><a href="/wiki/Speciale:MieiContributi" title="Un elenco delle modifiche fatte da questo indirizzo IP [y]" accesskey="y"><span>contributi</span></a></li><li id="pt-anontalk" class="mw-list-item"><a href="/wiki/Speciale:MieDiscussioni" title="Discussioni sulle modifiche fatte da questo indirizzo IP [n]" accesskey="n"><span>discussioni</span></a></li> </ul> </div> </div> </div> </div> </nav> </div> </header> </div> <div class="mw-page-container"> <div class="mw-page-container-inner"> <div class="vector-sitenotice-container"> <div id="siteNotice"></div> </div> <div class="vector-column-start"> <div class="vector-main-menu-container"> <div id="mw-navigation"> <nav id="mw-panel" class="vector-main-menu-landmark" aria-label="Sito"> <div id="vector-main-menu-pinned-container" class="vector-pinned-container"> </div> </nav> </div> </div> <div class="vector-sticky-pinned-container"> <nav id="mw-panel-toc" aria-label="Indice" data-event-name="ui.sidebar-toc" class="mw-table-of-contents-container vector-toc-landmark"> <div id="vector-toc-pinned-container" class="vector-pinned-container"> <div id="vector-toc" class="vector-toc vector-pinnable-element"> <div class="vector-pinnable-header vector-toc-pinnable-header vector-pinnable-header-pinned" data-feature-name="toc-pinned" data-pinnable-element-id="vector-toc" > <h2 class="vector-pinnable-header-label">Indice</h2> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-pin-button" data-event-name="pinnable-header.vector-toc.pin">sposta nella barra laterale</button> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-unpin-button" data-event-name="pinnable-header.vector-toc.unpin">nascondi</button> </div> <ul class="vector-toc-contents" id="mw-panel-toc-list"> <li id="toc-mw-content-text" class="vector-toc-list-item vector-toc-level-1"> <a href="#" class="vector-toc-link"> <div class="vector-toc-text">Inizio</div> </a> </li> <li id="toc-Storia_ed_etimologia" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Storia_ed_etimologia"> <div class="vector-toc-text"> <span class="vector-toc-numb">1</span> <span>Storia ed etimologia</span> </div> </a> <ul id="toc-Storia_ed_etimologia-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Proprietà" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Proprietà"> <div class="vector-toc-text"> <span class="vector-toc-numb">2</span> <span>Proprietà</span> </div> </a> <button aria-controls="toc-Proprietà-sublist" class="cdx-button cdx-button--weight-quiet cdx-button--icon-only vector-toc-toggle"> <span class="vector-icon mw-ui-icon-wikimedia-expand"></span> <span>Attiva/disattiva la sottosezione Proprietà</span> </button> <ul id="toc-Proprietà-sublist" class="vector-toc-list"> <li id="toc-Instabilità" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Instabilità"> <div class="vector-toc-text"> <span class="vector-toc-numb">2.1</span> <span>Instabilità</span> </div> </a> <ul id="toc-Instabilità-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Neutralità" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Neutralità"> <div class="vector-toc-text"> <span class="vector-toc-numb">2.2</span> <span>Neutralità</span> </div> </a> <ul id="toc-Neutralità-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Penetrazione" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Penetrazione"> <div class="vector-toc-text"> <span class="vector-toc-numb">2.3</span> <span>Penetrazione</span> </div> </a> <ul id="toc-Penetrazione-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Pericolosità" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Pericolosità"> <div class="vector-toc-text"> <span class="vector-toc-numb">2.4</span> <span>Pericolosità</span> </div> </a> <ul id="toc-Pericolosità-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Evanescenza" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Evanescenza"> <div class="vector-toc-text"> <span class="vector-toc-numb">2.5</span> <span>Evanescenza</span> </div> </a> <ul id="toc-Evanescenza-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Immanovrabilità" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Immanovrabilità"> <div class="vector-toc-text"> <span class="vector-toc-numb">2.6</span> <span>Immanovrabilità</span> </div> </a> <ul id="toc-Immanovrabilità-sublist" class="vector-toc-list"> </ul> </li> </ul> </li> <li id="toc-Sviluppi" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Sviluppi"> <div class="vector-toc-text"> <span class="vector-toc-numb">3</span> <span>Sviluppi</span> </div> </a> <ul id="toc-Sviluppi-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Note" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Note"> <div class="vector-toc-text"> <span class="vector-toc-numb">4</span> <span>Note</span> </div> </a> <ul id="toc-Note-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Bibliografia" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Bibliografia"> <div class="vector-toc-text"> <span class="vector-toc-numb">5</span> <span>Bibliografia</span> </div> </a> <ul id="toc-Bibliografia-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Voci_correlate" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Voci_correlate"> <div class="vector-toc-text"> <span class="vector-toc-numb">6</span> <span>Voci correlate</span> </div> </a> <ul id="toc-Voci_correlate-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Altri_progetti" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Altri_progetti"> <div class="vector-toc-text"> <span class="vector-toc-numb">7</span> <span>Altri progetti</span> </div> </a> <ul id="toc-Altri_progetti-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Collegamenti_esterni" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Collegamenti_esterni"> <div class="vector-toc-text"> <span class="vector-toc-numb">8</span> <span>Collegamenti esterni</span> </div> </a> <ul id="toc-Collegamenti_esterni-sublist" class="vector-toc-list"> </ul> </li> </ul> </div> </div> </nav> </div> </div> <div class="mw-content-container"> <main id="content" class="mw-body"> <header class="mw-body-header vector-page-titlebar"> <nav aria-label="Indice" class="vector-toc-landmark"> <div id="vector-page-titlebar-toc" class="vector-dropdown vector-page-titlebar-toc vector-button-flush-left" > <input type="checkbox" id="vector-page-titlebar-toc-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-page-titlebar-toc" class="vector-dropdown-checkbox " aria-label="Mostra/Nascondi l'indice" > <label id="vector-page-titlebar-toc-label" for="vector-page-titlebar-toc-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--icon-only " aria-hidden="true" ><span class="vector-icon mw-ui-icon-listBullet mw-ui-icon-wikimedia-listBullet"></span> <span class="vector-dropdown-label-text">Mostra/Nascondi l'indice</span> </label> <div class="vector-dropdown-content"> <div id="vector-page-titlebar-toc-unpinned-container" class="vector-unpinned-container"> </div> </div> </div> </nav> <h1 id="firstHeading" class="firstHeading mw-first-heading"><span class="mw-page-title-main">Neutrone</span></h1> <div id="p-lang-btn" class="vector-dropdown mw-portlet mw-portlet-lang" > <input type="checkbox" id="p-lang-btn-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-p-lang-btn" class="vector-dropdown-checkbox mw-interlanguage-selector" aria-label="Vai a una voce in un'altra lingua. Disponibile in 137 lingue" > <label id="p-lang-btn-label" for="p-lang-btn-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--action-progressive mw-portlet-lang-heading-137" aria-hidden="true" ><span class="vector-icon mw-ui-icon-language-progressive mw-ui-icon-wikimedia-language-progressive"></span> <span class="vector-dropdown-label-text">137 lingue</span> </label> <div class="vector-dropdown-content"> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li class="interlanguage-link interwiki-af mw-list-item"><a href="https://af.wikipedia.org/wiki/Neutron" title="Neutron - afrikaans" lang="af" hreflang="af" data-title="Neutron" data-language-autonym="Afrikaans" data-language-local-name="afrikaans" class="interlanguage-link-target"><span>Afrikaans</span></a></li><li class="interlanguage-link interwiki-als mw-list-item"><a href="https://als.wikipedia.org/wiki/Neutron" title="Neutron - tedesco svizzero" lang="gsw" hreflang="gsw" data-title="Neutron" data-language-autonym="Alemannisch" data-language-local-name="tedesco svizzero" class="interlanguage-link-target"><span>Alemannisch</span></a></li><li class="interlanguage-link interwiki-an mw-list-item"><a href="https://an.wikipedia.org/wiki/Neutr%C3%B3n" title="Neutrón - aragonese" lang="an" hreflang="an" data-title="Neutrón" data-language-autonym="Aragonés" data-language-local-name="aragonese" class="interlanguage-link-target"><span>Aragonés</span></a></li><li class="interlanguage-link interwiki-ar mw-list-item"><a href="https://ar.wikipedia.org/wiki/%D9%86%D9%8A%D9%88%D8%AA%D8%B1%D9%88%D9%86" title="نيوترون - arabo" lang="ar" hreflang="ar" data-title="نيوترون" data-language-autonym="العربية" data-language-local-name="arabo" class="interlanguage-link-target"><span>العربية</span></a></li><li class="interlanguage-link interwiki-ary mw-list-item"><a href="https://ary.wikipedia.org/wiki/%D9%86%D9%8A%D9%88%D8%B7%D8%B1%D9%88%D9%86" title="نيوطرون - arabo marocchino" lang="ary" hreflang="ary" data-title="نيوطرون" data-language-autonym="الدارجة" data-language-local-name="arabo marocchino" class="interlanguage-link-target"><span>الدارجة</span></a></li><li class="interlanguage-link interwiki-ast mw-list-item"><a href="https://ast.wikipedia.org/wiki/Neutr%C3%B3n" title="Neutrón - asturiano" lang="ast" hreflang="ast" data-title="Neutrón" data-language-autonym="Asturianu" data-language-local-name="asturiano" class="interlanguage-link-target"><span>Asturianu</span></a></li><li class="interlanguage-link interwiki-az mw-list-item"><a href="https://az.wikipedia.org/wiki/Neytron" title="Neytron - azerbaigiano" lang="az" hreflang="az" data-title="Neytron" data-language-autonym="Azərbaycanca" data-language-local-name="azerbaigiano" class="interlanguage-link-target"><span>Azərbaycanca</span></a></li><li class="interlanguage-link interwiki-azb mw-list-item"><a href="https://azb.wikipedia.org/wiki/%D9%86%D9%88%D8%AA%D8%B1%D9%88%D9%86" title="نوترون - South Azerbaijani" lang="azb" hreflang="azb" data-title="نوترون" data-language-autonym="تۆرکجه" data-language-local-name="South Azerbaijani" class="interlanguage-link-target"><span>تۆرکجه</span></a></li><li class="interlanguage-link interwiki-bat-smg mw-list-item"><a href="https://bat-smg.wikipedia.org/wiki/Neutruons" title="Neutruons - samogitico" lang="sgs" hreflang="sgs" data-title="Neutruons" data-language-autonym="Žemaitėška" data-language-local-name="samogitico" class="interlanguage-link-target"><span>Žemaitėška</span></a></li><li class="interlanguage-link interwiki-bcl mw-list-item"><a href="https://bcl.wikipedia.org/wiki/Neutron" title="Neutron - Central Bikol" lang="bcl" hreflang="bcl" data-title="Neutron" data-language-autonym="Bikol Central" data-language-local-name="Central Bikol" class="interlanguage-link-target"><span>Bikol Central</span></a></li><li class="interlanguage-link interwiki-be mw-list-item"><a href="https://be.wikipedia.org/wiki/%D0%9D%D0%B5%D0%B9%D1%82%D1%80%D0%BE%D0%BD" title="Нейтрон - bielorusso" lang="be" hreflang="be" data-title="Нейтрон" data-language-autonym="Беларуская" data-language-local-name="bielorusso" class="interlanguage-link-target"><span>Беларуская</span></a></li><li class="interlanguage-link interwiki-be-x-old mw-list-item"><a href="https://be-tarask.wikipedia.org/wiki/%D0%9D%D1%8D%D1%9E%D1%82%D1%80%D0%BE%D0%BD" title="Нэўтрон - Belarusian (Taraškievica orthography)" lang="be-tarask" hreflang="be-tarask" data-title="Нэўтрон" data-language-autonym="Беларуская (тарашкевіца)" data-language-local-name="Belarusian (Taraškievica orthography)" class="interlanguage-link-target"><span>Беларуская (тарашкевіца)</span></a></li><li class="interlanguage-link interwiki-bg mw-list-item"><a href="https://bg.wikipedia.org/wiki/%D0%9D%D0%B5%D1%83%D1%82%D1%80%D0%BE%D0%BD" title="Неутрон - bulgaro" lang="bg" hreflang="bg" data-title="Неутрон" data-language-autonym="Български" data-language-local-name="bulgaro" class="interlanguage-link-target"><span>Български</span></a></li><li class="interlanguage-link interwiki-bn mw-list-item"><a href="https://bn.wikipedia.org/wiki/%E0%A6%A8%E0%A6%BF%E0%A6%89%E0%A6%9F%E0%A7%8D%E0%A6%B0%E0%A6%A8" title="নিউট্রন - bengalese" lang="bn" hreflang="bn" data-title="নিউট্রন" data-language-autonym="বাংলা" data-language-local-name="bengalese" class="interlanguage-link-target"><span>বাংলা</span></a></li><li class="interlanguage-link interwiki-br mw-list-item"><a href="https://br.wikipedia.org/wiki/Neutron" title="Neutron - bretone" lang="br" hreflang="br" data-title="Neutron" data-language-autonym="Brezhoneg" data-language-local-name="bretone" class="interlanguage-link-target"><span>Brezhoneg</span></a></li><li class="interlanguage-link interwiki-bs mw-list-item"><a href="https://bs.wikipedia.org/wiki/Neutron" title="Neutron - bosniaco" lang="bs" hreflang="bs" data-title="Neutron" data-language-autonym="Bosanski" data-language-local-name="bosniaco" class="interlanguage-link-target"><span>Bosanski</span></a></li><li class="interlanguage-link interwiki-bug mw-list-item"><a href="https://bug.wikipedia.org/wiki/Neutron" title="Neutron - bugi" lang="bug" hreflang="bug" data-title="Neutron" data-language-autonym="Basa Ugi" data-language-local-name="bugi" class="interlanguage-link-target"><span>Basa Ugi</span></a></li><li class="interlanguage-link interwiki-ca mw-list-item"><a href="https://ca.wikipedia.org/wiki/Neutr%C3%B3" title="Neutró - catalano" lang="ca" hreflang="ca" data-title="Neutró" data-language-autonym="Català" data-language-local-name="catalano" class="interlanguage-link-target"><span>Català</span></a></li><li class="interlanguage-link interwiki-cdo mw-list-item"><a href="https://cdo.wikipedia.org/wiki/D%E1%B9%B3%CC%86ng-c%E1%B9%B3%CC%84" title="Dṳ̆ng-cṳ̄ - Mindong" lang="cdo" hreflang="cdo" data-title="Dṳ̆ng-cṳ̄" data-language-autonym="閩東語 / Mìng-dĕ̤ng-ngṳ̄" data-language-local-name="Mindong" class="interlanguage-link-target"><span>閩東語 / Mìng-dĕ̤ng-ngṳ̄</span></a></li><li class="interlanguage-link interwiki-ceb mw-list-item"><a href="https://ceb.wikipedia.org/wiki/Neutron" title="Neutron - cebuano" lang="ceb" hreflang="ceb" data-title="Neutron" data-language-autonym="Cebuano" data-language-local-name="cebuano" class="interlanguage-link-target"><span>Cebuano</span></a></li><li class="interlanguage-link interwiki-ckb mw-list-item"><a href="https://ckb.wikipedia.org/wiki/%D9%86%DB%8C%D9%88%D8%AA%D8%B1%DB%86%D9%86" title="نیوترۆن - curdo centrale" lang="ckb" hreflang="ckb" data-title="نیوترۆن" data-language-autonym="کوردی" data-language-local-name="curdo centrale" class="interlanguage-link-target"><span>کوردی</span></a></li><li class="interlanguage-link interwiki-cs mw-list-item"><a href="https://cs.wikipedia.org/wiki/Neutron" title="Neutron - ceco" lang="cs" hreflang="cs" data-title="Neutron" data-language-autonym="Čeština" data-language-local-name="ceco" class="interlanguage-link-target"><span>Čeština</span></a></li><li class="interlanguage-link interwiki-cv mw-list-item"><a href="https://cv.wikipedia.org/wiki/%D0%9D%D0%B5%D0%B9%D1%82%D1%80%D0%BE%D0%BD" title="Нейтрон - ciuvascio" lang="cv" hreflang="cv" data-title="Нейтрон" data-language-autonym="Чӑвашла" data-language-local-name="ciuvascio" class="interlanguage-link-target"><span>Чӑвашла</span></a></li><li class="interlanguage-link interwiki-cy mw-list-item"><a href="https://cy.wikipedia.org/wiki/Niwtron" title="Niwtron - gallese" lang="cy" hreflang="cy" data-title="Niwtron" data-language-autonym="Cymraeg" data-language-local-name="gallese" class="interlanguage-link-target"><span>Cymraeg</span></a></li><li class="interlanguage-link interwiki-da mw-list-item"><a href="https://da.wikipedia.org/wiki/Neutron" title="Neutron - danese" lang="da" hreflang="da" data-title="Neutron" data-language-autonym="Dansk" data-language-local-name="danese" class="interlanguage-link-target"><span>Dansk</span></a></li><li class="interlanguage-link interwiki-de mw-list-item"><a href="https://de.wikipedia.org/wiki/Neutron" title="Neutron - tedesco" lang="de" hreflang="de" data-title="Neutron" data-language-autonym="Deutsch" data-language-local-name="tedesco" class="interlanguage-link-target"><span>Deutsch</span></a></li><li class="interlanguage-link interwiki-el mw-list-item"><a href="https://el.wikipedia.org/wiki/%CE%9D%CE%B5%CF%84%CF%81%CF%8C%CE%BD%CE%B9%CE%BF" title="Νετρόνιο - greco" lang="el" hreflang="el" data-title="Νετρόνιο" data-language-autonym="Ελληνικά" data-language-local-name="greco" class="interlanguage-link-target"><span>Ελληνικά</span></a></li><li class="interlanguage-link interwiki-en mw-list-item"><a href="https://en.wikipedia.org/wiki/Neutron" title="Neutron - inglese" lang="en" hreflang="en" data-title="Neutron" data-language-autonym="English" data-language-local-name="inglese" class="interlanguage-link-target"><span>English</span></a></li><li class="interlanguage-link interwiki-eo mw-list-item"><a href="https://eo.wikipedia.org/wiki/Ne%C5%ADtrono" title="Neŭtrono - esperanto" lang="eo" hreflang="eo" data-title="Neŭtrono" data-language-autonym="Esperanto" data-language-local-name="esperanto" class="interlanguage-link-target"><span>Esperanto</span></a></li><li class="interlanguage-link interwiki-es mw-list-item"><a href="https://es.wikipedia.org/wiki/Neutr%C3%B3n" title="Neutrón - spagnolo" lang="es" hreflang="es" data-title="Neutrón" data-language-autonym="Español" data-language-local-name="spagnolo" class="interlanguage-link-target"><span>Español</span></a></li><li class="interlanguage-link interwiki-et mw-list-item"><a href="https://et.wikipedia.org/wiki/Neutron" title="Neutron - estone" lang="et" hreflang="et" data-title="Neutron" data-language-autonym="Eesti" data-language-local-name="estone" class="interlanguage-link-target"><span>Eesti</span></a></li><li class="interlanguage-link interwiki-eu mw-list-item"><a href="https://eu.wikipedia.org/wiki/Neutroi" title="Neutroi - basco" lang="eu" hreflang="eu" data-title="Neutroi" data-language-autonym="Euskara" data-language-local-name="basco" class="interlanguage-link-target"><span>Euskara</span></a></li><li class="interlanguage-link interwiki-fa mw-list-item"><a href="https://fa.wikipedia.org/wiki/%D9%86%D9%88%D8%AA%D8%B1%D9%88%D9%86" title="نوترون - persiano" lang="fa" hreflang="fa" data-title="نوترون" data-language-autonym="فارسی" data-language-local-name="persiano" class="interlanguage-link-target"><span>فارسی</span></a></li><li class="interlanguage-link interwiki-fi mw-list-item"><a href="https://fi.wikipedia.org/wiki/Neutroni" title="Neutroni - finlandese" lang="fi" hreflang="fi" data-title="Neutroni" data-language-autonym="Suomi" data-language-local-name="finlandese" class="interlanguage-link-target"><span>Suomi</span></a></li><li class="interlanguage-link interwiki-fiu-vro mw-list-item"><a href="https://fiu-vro.wikipedia.org/wiki/Neutron" title="Neutron - võro" lang="vro" hreflang="vro" data-title="Neutron" data-language-autonym="Võro" data-language-local-name="võro" class="interlanguage-link-target"><span>Võro</span></a></li><li class="interlanguage-link interwiki-fo mw-list-item"><a href="https://fo.wikipedia.org/wiki/Neutron" title="Neutron - faroese" lang="fo" hreflang="fo" data-title="Neutron" data-language-autonym="Føroyskt" data-language-local-name="faroese" class="interlanguage-link-target"><span>Føroyskt</span></a></li><li class="interlanguage-link interwiki-fr mw-list-item"><a href="https://fr.wikipedia.org/wiki/Neutron" title="Neutron - francese" lang="fr" hreflang="fr" data-title="Neutron" data-language-autonym="Français" data-language-local-name="francese" class="interlanguage-link-target"><span>Français</span></a></li><li class="interlanguage-link interwiki-frr badge-Q70894304 mw-list-item" title=""><a href="https://frr.wikipedia.org/wiki/Neutron" title="Neutron - frisone settentrionale" lang="frr" hreflang="frr" data-title="Neutron" data-language-autonym="Nordfriisk" data-language-local-name="frisone settentrionale" class="interlanguage-link-target"><span>Nordfriisk</span></a></li><li class="interlanguage-link interwiki-fy mw-list-item"><a href="https://fy.wikipedia.org/wiki/Neutron" title="Neutron - frisone occidentale" lang="fy" hreflang="fy" data-title="Neutron" data-language-autonym="Frysk" data-language-local-name="frisone occidentale" class="interlanguage-link-target"><span>Frysk</span></a></li><li class="interlanguage-link interwiki-ga mw-list-item"><a href="https://ga.wikipedia.org/wiki/Neodr%C3%B3n" title="Neodrón - irlandese" lang="ga" hreflang="ga" data-title="Neodrón" data-language-autonym="Gaeilge" data-language-local-name="irlandese" class="interlanguage-link-target"><span>Gaeilge</span></a></li><li class="interlanguage-link interwiki-gcr mw-list-item"><a href="https://gcr.wikipedia.org/wiki/N%C3%A9tron" title="Nétron - Guianan Creole" lang="gcr" hreflang="gcr" data-title="Nétron" data-language-autonym="Kriyòl gwiyannen" data-language-local-name="Guianan Creole" class="interlanguage-link-target"><span>Kriyòl gwiyannen</span></a></li><li class="interlanguage-link interwiki-gl mw-list-item"><a href="https://gl.wikipedia.org/wiki/Neutr%C3%B3n" title="Neutrón - galiziano" lang="gl" hreflang="gl" data-title="Neutrón" data-language-autonym="Galego" data-language-local-name="galiziano" class="interlanguage-link-target"><span>Galego</span></a></li><li class="interlanguage-link interwiki-he mw-list-item"><a href="https://he.wikipedia.org/wiki/%D7%A0%D7%99%D7%99%D7%98%D7%A8%D7%95%D7%9F" title="נייטרון - ebraico" lang="he" hreflang="he" data-title="נייטרון" data-language-autonym="עברית" data-language-local-name="ebraico" class="interlanguage-link-target"><span>עברית</span></a></li><li class="interlanguage-link interwiki-hi mw-list-item"><a href="https://hi.wikipedia.org/wiki/%E0%A4%A8%E0%A5%8D%E0%A4%AF%E0%A5%82%E0%A4%9F%E0%A5%8D%E0%A4%B0%E0%A5%89%E0%A4%A8" title="न्यूट्रॉन - hindi" lang="hi" hreflang="hi" data-title="न्यूट्रॉन" data-language-autonym="हिन्दी" data-language-local-name="hindi" class="interlanguage-link-target"><span>हिन्दी</span></a></li><li class="interlanguage-link interwiki-hif mw-list-item"><a href="https://hif.wikipedia.org/wiki/Neutron" title="Neutron - hindi figiano" lang="hif" hreflang="hif" data-title="Neutron" data-language-autonym="Fiji Hindi" data-language-local-name="hindi figiano" class="interlanguage-link-target"><span>Fiji Hindi</span></a></li><li class="interlanguage-link interwiki-hr mw-list-item"><a href="https://hr.wikipedia.org/wiki/Neutron" title="Neutron - croato" lang="hr" hreflang="hr" data-title="Neutron" data-language-autonym="Hrvatski" data-language-local-name="croato" class="interlanguage-link-target"><span>Hrvatski</span></a></li><li class="interlanguage-link interwiki-ht mw-list-item"><a href="https://ht.wikipedia.org/wiki/Netwon" title="Netwon - creolo haitiano" lang="ht" hreflang="ht" data-title="Netwon" data-language-autonym="Kreyòl ayisyen" data-language-local-name="creolo haitiano" class="interlanguage-link-target"><span>Kreyòl ayisyen</span></a></li><li class="interlanguage-link interwiki-hu mw-list-item"><a href="https://hu.wikipedia.org/wiki/Neutron" title="Neutron - ungherese" lang="hu" hreflang="hu" data-title="Neutron" data-language-autonym="Magyar" data-language-local-name="ungherese" class="interlanguage-link-target"><span>Magyar</span></a></li><li class="interlanguage-link interwiki-hy mw-list-item"><a href="https://hy.wikipedia.org/wiki/%D5%86%D5%A5%D5%B5%D5%BF%D6%80%D5%B8%D5%B6" title="Նեյտրոն - armeno" lang="hy" hreflang="hy" data-title="Նեյտրոն" data-language-autonym="Հայերեն" data-language-local-name="armeno" class="interlanguage-link-target"><span>Հայերեն</span></a></li><li class="interlanguage-link interwiki-ia mw-list-item"><a href="https://ia.wikipedia.org/wiki/Neutron" title="Neutron - interlingua" lang="ia" hreflang="ia" data-title="Neutron" data-language-autonym="Interlingua" data-language-local-name="interlingua" class="interlanguage-link-target"><span>Interlingua</span></a></li><li class="interlanguage-link interwiki-id mw-list-item"><a href="https://id.wikipedia.org/wiki/Neutron" title="Neutron - indonesiano" lang="id" hreflang="id" data-title="Neutron" data-language-autonym="Bahasa Indonesia" data-language-local-name="indonesiano" class="interlanguage-link-target"><span>Bahasa Indonesia</span></a></li><li class="interlanguage-link interwiki-ie mw-list-item"><a href="https://ie.wikipedia.org/wiki/Neutron" title="Neutron - interlingue" lang="ie" hreflang="ie" data-title="Neutron" data-language-autonym="Interlingue" data-language-local-name="interlingue" class="interlanguage-link-target"><span>Interlingue</span></a></li><li class="interlanguage-link interwiki-io mw-list-item"><a href="https://io.wikipedia.org/wiki/Neutrono" title="Neutrono - ido" lang="io" hreflang="io" data-title="Neutrono" data-language-autonym="Ido" data-language-local-name="ido" class="interlanguage-link-target"><span>Ido</span></a></li><li class="interlanguage-link interwiki-is mw-list-item"><a href="https://is.wikipedia.org/wiki/Nifteind" title="Nifteind - islandese" lang="is" hreflang="is" data-title="Nifteind" data-language-autonym="Íslenska" data-language-local-name="islandese" class="interlanguage-link-target"><span>Íslenska</span></a></li><li class="interlanguage-link interwiki-ja mw-list-item"><a href="https://ja.wikipedia.org/wiki/%E4%B8%AD%E6%80%A7%E5%AD%90" title="中性子 - giapponese" lang="ja" hreflang="ja" data-title="中性子" data-language-autonym="日本語" data-language-local-name="giapponese" class="interlanguage-link-target"><span>日本語</span></a></li><li class="interlanguage-link interwiki-jam mw-list-item"><a href="https://jam.wikipedia.org/wiki/Nyuuchran" title="Nyuuchran - creolo giamaicano" lang="jam" hreflang="jam" data-title="Nyuuchran" data-language-autonym="Patois" data-language-local-name="creolo giamaicano" class="interlanguage-link-target"><span>Patois</span></a></li><li class="interlanguage-link interwiki-ka mw-list-item"><a href="https://ka.wikipedia.org/wiki/%E1%83%9C%E1%83%94%E1%83%98%E1%83%A2%E1%83%A0%E1%83%9D%E1%83%9C%E1%83%98" title="ნეიტრონი - georgiano" lang="ka" hreflang="ka" data-title="ნეიტრონი" data-language-autonym="ქართული" data-language-local-name="georgiano" class="interlanguage-link-target"><span>ქართული</span></a></li><li class="interlanguage-link interwiki-kab mw-list-item"><a href="https://kab.wikipedia.org/wiki/Anutrun" title="Anutrun - cabilo" lang="kab" hreflang="kab" data-title="Anutrun" data-language-autonym="Taqbaylit" data-language-local-name="cabilo" class="interlanguage-link-target"><span>Taqbaylit</span></a></li><li class="interlanguage-link interwiki-kbp mw-list-item"><a href="https://kbp.wikipedia.org/wiki/Netr%C9%94%C9%94" title="Netrɔɔ - Kabiye" lang="kbp" hreflang="kbp" data-title="Netrɔɔ" data-language-autonym="Kabɩyɛ" data-language-local-name="Kabiye" class="interlanguage-link-target"><span>Kabɩyɛ</span></a></li><li class="interlanguage-link interwiki-kk mw-list-item"><a href="https://kk.wikipedia.org/wiki/%D0%9D%D0%B5%D0%B9%D1%82%D1%80%D0%BE%D0%BD" title="Нейтрон - kazako" lang="kk" hreflang="kk" data-title="Нейтрон" data-language-autonym="Қазақша" data-language-local-name="kazako" class="interlanguage-link-target"><span>Қазақша</span></a></li><li class="interlanguage-link interwiki-kn mw-list-item"><a href="https://kn.wikipedia.org/wiki/%E0%B2%A8%E0%B3%8D%E0%B2%AF%E0%B3%82%E0%B2%9F%E0%B3%8D%E0%B2%B0%E0%B2%BE%E0%B2%A8%E0%B3%8D" title="ನ್ಯೂಟ್ರಾನ್ - kannada" lang="kn" hreflang="kn" data-title="ನ್ಯೂಟ್ರಾನ್" data-language-autonym="ಕನ್ನಡ" data-language-local-name="kannada" class="interlanguage-link-target"><span>ಕನ್ನಡ</span></a></li><li class="interlanguage-link interwiki-ko mw-list-item"><a href="https://ko.wikipedia.org/wiki/%EC%A4%91%EC%84%B1%EC%9E%90" title="중성자 - coreano" lang="ko" hreflang="ko" data-title="중성자" data-language-autonym="한국어" data-language-local-name="coreano" class="interlanguage-link-target"><span>한국어</span></a></li><li class="interlanguage-link interwiki-krc mw-list-item"><a href="https://krc.wikipedia.org/wiki/%D0%9D%D0%B5%D0%B9%D1%82%D1%80%D0%BE%D0%BD" title="Нейтрон - karachay-Balkar" lang="krc" hreflang="krc" data-title="Нейтрон" data-language-autonym="Къарачай-малкъар" data-language-local-name="karachay-Balkar" class="interlanguage-link-target"><span>Къарачай-малкъар</span></a></li><li class="interlanguage-link interwiki-ks mw-list-item"><a href="https://ks.wikipedia.org/wiki/%D9%85%D8%B1%D9%9B%DB%86%D9%86" title="مرٛۆن - kashmiri" lang="ks" hreflang="ks" data-title="مرٛۆن" data-language-autonym="कॉशुर / کٲشُر" data-language-local-name="kashmiri" class="interlanguage-link-target"><span>कॉशुर / کٲشُر</span></a></li><li class="interlanguage-link interwiki-ksh mw-list-item"><a href="https://ksh.wikipedia.org/wiki/Neutron" title="Neutron - coloniese" lang="ksh" hreflang="ksh" data-title="Neutron" data-language-autonym="Ripoarisch" data-language-local-name="coloniese" class="interlanguage-link-target"><span>Ripoarisch</span></a></li><li class="interlanguage-link interwiki-ku mw-list-item"><a href="https://ku.wikipedia.org/wiki/Notron" title="Notron - curdo" lang="ku" hreflang="ku" data-title="Notron" data-language-autonym="Kurdî" data-language-local-name="curdo" class="interlanguage-link-target"><span>Kurdî</span></a></li><li class="interlanguage-link interwiki-ky mw-list-item"><a href="https://ky.wikipedia.org/wiki/%D0%9D%D0%B5%D0%B9%D1%82%D1%80%D0%BE%D0%BD" title="Нейтрон - kirghiso" lang="ky" hreflang="ky" data-title="Нейтрон" data-language-autonym="Кыргызча" data-language-local-name="kirghiso" class="interlanguage-link-target"><span>Кыргызча</span></a></li><li class="interlanguage-link interwiki-la mw-list-item"><a href="https://la.wikipedia.org/wiki/Neutron" title="Neutron - latino" lang="la" hreflang="la" data-title="Neutron" data-language-autonym="Latina" data-language-local-name="latino" class="interlanguage-link-target"><span>Latina</span></a></li><li class="interlanguage-link interwiki-lb mw-list-item"><a href="https://lb.wikipedia.org/wiki/Neutron" title="Neutron - lussemburghese" lang="lb" hreflang="lb" data-title="Neutron" data-language-autonym="Lëtzebuergesch" data-language-local-name="lussemburghese" class="interlanguage-link-target"><span>Lëtzebuergesch</span></a></li><li class="interlanguage-link interwiki-lfn mw-list-item"><a href="https://lfn.wikipedia.org/wiki/Neutron" title="Neutron - Lingua Franca Nova" lang="lfn" hreflang="lfn" data-title="Neutron" data-language-autonym="Lingua Franca Nova" data-language-local-name="Lingua Franca Nova" class="interlanguage-link-target"><span>Lingua Franca Nova</span></a></li><li class="interlanguage-link interwiki-li mw-list-item"><a href="https://li.wikipedia.org/wiki/Neutron" title="Neutron - limburghese" lang="li" hreflang="li" data-title="Neutron" data-language-autonym="Limburgs" data-language-local-name="limburghese" class="interlanguage-link-target"><span>Limburgs</span></a></li><li class="interlanguage-link interwiki-lij mw-list-item"><a href="https://lij.wikipedia.org/wiki/Neuitron" title="Neuitron - ligure" lang="lij" hreflang="lij" data-title="Neuitron" data-language-autonym="Ligure" data-language-local-name="ligure" class="interlanguage-link-target"><span>Ligure</span></a></li><li class="interlanguage-link interwiki-lmo mw-list-item"><a href="https://lmo.wikipedia.org/wiki/Ne%C3%BCtrun" title="Neütrun - lombardo" lang="lmo" hreflang="lmo" data-title="Neütrun" data-language-autonym="Lombard" data-language-local-name="lombardo" class="interlanguage-link-target"><span>Lombard</span></a></li><li class="interlanguage-link interwiki-ln mw-list-item"><a href="https://ln.wikipedia.org/wiki/Netron" title="Netron - lingala" lang="ln" hreflang="ln" data-title="Netron" data-language-autonym="Lingála" data-language-local-name="lingala" class="interlanguage-link-target"><span>Lingála</span></a></li><li class="interlanguage-link interwiki-lo mw-list-item"><a href="https://lo.wikipedia.org/wiki/%E0%BA%99%E0%BA%B4%E0%BA%A7%E0%BA%95%E0%BA%A3%E0%BA%AD%E0%BA%99" title="ນິວຕຣອນ - lao" lang="lo" hreflang="lo" data-title="ນິວຕຣອນ" data-language-autonym="ລາວ" data-language-local-name="lao" class="interlanguage-link-target"><span>ລາວ</span></a></li><li class="interlanguage-link interwiki-lt mw-list-item"><a href="https://lt.wikipedia.org/wiki/Neutronas" title="Neutronas - lituano" lang="lt" hreflang="lt" data-title="Neutronas" data-language-autonym="Lietuvių" data-language-local-name="lituano" class="interlanguage-link-target"><span>Lietuvių</span></a></li><li class="interlanguage-link interwiki-lv mw-list-item"><a href="https://lv.wikipedia.org/wiki/Neitrons" title="Neitrons - lettone" lang="lv" hreflang="lv" data-title="Neitrons" data-language-autonym="Latviešu" data-language-local-name="lettone" class="interlanguage-link-target"><span>Latviešu</span></a></li><li class="interlanguage-link interwiki-mk mw-list-item"><a href="https://mk.wikipedia.org/wiki/%D0%9D%D0%B5%D1%83%D1%82%D1%80%D0%BE%D0%BD" title="Неутрон - macedone" lang="mk" hreflang="mk" data-title="Неутрон" data-language-autonym="Македонски" data-language-local-name="macedone" class="interlanguage-link-target"><span>Македонски</span></a></li><li class="interlanguage-link interwiki-ml mw-list-item"><a href="https://ml.wikipedia.org/wiki/%E0%B4%A8%E0%B5%8D%E0%B4%AF%E0%B5%82%E0%B4%9F%E0%B5%8D%E0%B4%B0%E0%B5%8B%E0%B5%BA" title="ന്യൂട്രോൺ - malayalam" lang="ml" hreflang="ml" data-title="ന്യൂട്രോൺ" data-language-autonym="മലയാളം" data-language-local-name="malayalam" class="interlanguage-link-target"><span>മലയാളം</span></a></li><li class="interlanguage-link interwiki-mn mw-list-item"><a href="https://mn.wikipedia.org/wiki/%D0%9D%D0%B5%D0%B9%D1%82%D1%80%D0%BE%D0%BD" title="Нейтрон - mongolo" lang="mn" hreflang="mn" data-title="Нейтрон" data-language-autonym="Монгол" data-language-local-name="mongolo" class="interlanguage-link-target"><span>Монгол</span></a></li><li class="interlanguage-link interwiki-mr mw-list-item"><a href="https://mr.wikipedia.org/wiki/%E0%A4%A8%E0%A5%8D%E0%A4%AF%E0%A5%82%E0%A4%9F%E0%A5%8D%E0%A4%B0%E0%A5%89%E0%A4%A8" title="न्यूट्रॉन - marathi" lang="mr" hreflang="mr" data-title="न्यूट्रॉन" data-language-autonym="मराठी" data-language-local-name="marathi" class="interlanguage-link-target"><span>मराठी</span></a></li><li class="interlanguage-link interwiki-ms mw-list-item"><a href="https://ms.wikipedia.org/wiki/Neutron" title="Neutron - malese" lang="ms" hreflang="ms" data-title="Neutron" data-language-autonym="Bahasa Melayu" data-language-local-name="malese" class="interlanguage-link-target"><span>Bahasa Melayu</span></a></li><li class="interlanguage-link interwiki-my mw-list-item"><a href="https://my.wikipedia.org/wiki/%E1%80%94%E1%80%BB%E1%80%B0%E1%80%91%E1%80%9B%E1%80%BD%E1%80%94%E1%80%BA" title="နျူထရွန် - birmano" lang="my" hreflang="my" data-title="နျူထရွန်" data-language-autonym="မြန်မာဘာသာ" data-language-local-name="birmano" class="interlanguage-link-target"><span>မြန်မာဘာသာ</span></a></li><li class="interlanguage-link interwiki-nds mw-list-item"><a href="https://nds.wikipedia.org/wiki/Neutron" title="Neutron - basso tedesco" lang="nds" hreflang="nds" data-title="Neutron" data-language-autonym="Plattdüütsch" data-language-local-name="basso tedesco" class="interlanguage-link-target"><span>Plattdüütsch</span></a></li><li class="interlanguage-link interwiki-ne mw-list-item"><a href="https://ne.wikipedia.org/wiki/%E0%A4%A8%E0%A5%8D%E0%A4%AF%E0%A5%82%E0%A4%9F%E0%A5%8D%E0%A4%B0%E0%A5%8B%E0%A4%A8" title="न्यूट्रोन - nepalese" lang="ne" hreflang="ne" data-title="न्यूट्रोन" data-language-autonym="नेपाली" data-language-local-name="nepalese" class="interlanguage-link-target"><span>नेपाली</span></a></li><li class="interlanguage-link interwiki-new mw-list-item"><a href="https://new.wikipedia.org/wiki/%E0%A4%A8%E0%A5%8D%E0%A4%AF%E0%A5%81%E0%A4%9F%E0%A5%8D%E0%A4%B0%E0%A5%8B%E0%A4%A8" title="न्युट्रोन - newari" lang="new" hreflang="new" data-title="न्युट्रोन" data-language-autonym="नेपाल भाषा" data-language-local-name="newari" class="interlanguage-link-target"><span>नेपाल भाषा</span></a></li><li class="interlanguage-link interwiki-nl mw-list-item"><a href="https://nl.wikipedia.org/wiki/Neutron" title="Neutron - olandese" lang="nl" hreflang="nl" data-title="Neutron" data-language-autonym="Nederlands" data-language-local-name="olandese" class="interlanguage-link-target"><span>Nederlands</span></a></li><li class="interlanguage-link interwiki-nn mw-list-item"><a href="https://nn.wikipedia.org/wiki/N%C3%B8ytron" title="Nøytron - norvegese nynorsk" lang="nn" hreflang="nn" data-title="Nøytron" data-language-autonym="Norsk nynorsk" data-language-local-name="norvegese nynorsk" class="interlanguage-link-target"><span>Norsk nynorsk</span></a></li><li class="interlanguage-link interwiki-no mw-list-item"><a href="https://no.wikipedia.org/wiki/N%C3%B8ytron" title="Nøytron - norvegese bokmål" lang="nb" hreflang="nb" data-title="Nøytron" data-language-autonym="Norsk bokmål" data-language-local-name="norvegese bokmål" class="interlanguage-link-target"><span>Norsk bokmål</span></a></li><li class="interlanguage-link interwiki-nov mw-list-item"><a href="https://nov.wikipedia.org/wiki/Neutrone" title="Neutrone - novial" lang="nov" hreflang="nov" data-title="Neutrone" data-language-autonym="Novial" data-language-local-name="novial" class="interlanguage-link-target"><span>Novial</span></a></li><li class="interlanguage-link interwiki-oc mw-list-item"><a href="https://oc.wikipedia.org/wiki/Neutron" title="Neutron - occitano" lang="oc" hreflang="oc" data-title="Neutron" data-language-autonym="Occitan" data-language-local-name="occitano" class="interlanguage-link-target"><span>Occitan</span></a></li><li class="interlanguage-link interwiki-pa mw-list-item"><a href="https://pa.wikipedia.org/wiki/%E0%A8%85%E0%A8%AC%E0%A8%BF%E0%A8%9C%E0%A8%B2%E0%A8%95%E0%A8%A3" title="ਅਬਿਜਲਕਣ - punjabi" lang="pa" hreflang="pa" data-title="ਅਬਿਜਲਕਣ" data-language-autonym="ਪੰਜਾਬੀ" data-language-local-name="punjabi" class="interlanguage-link-target"><span>ਪੰਜਾਬੀ</span></a></li><li class="interlanguage-link interwiki-pl mw-list-item"><a href="https://pl.wikipedia.org/wiki/Neutron" title="Neutron - polacco" lang="pl" hreflang="pl" data-title="Neutron" data-language-autonym="Polski" data-language-local-name="polacco" class="interlanguage-link-target"><span>Polski</span></a></li><li class="interlanguage-link interwiki-pms mw-list-item"><a href="https://pms.wikipedia.org/wiki/Neutron" title="Neutron - piemontese" lang="pms" hreflang="pms" data-title="Neutron" data-language-autonym="Piemontèis" data-language-local-name="piemontese" class="interlanguage-link-target"><span>Piemontèis</span></a></li><li class="interlanguage-link interwiki-pnb mw-list-item"><a href="https://pnb.wikipedia.org/wiki/%D9%86%DB%8C%D9%88%D9%B9%D8%B1%D8%A7%D9%86" title="نیوٹران - Western Punjabi" lang="pnb" hreflang="pnb" data-title="نیوٹران" data-language-autonym="پنجابی" data-language-local-name="Western Punjabi" class="interlanguage-link-target"><span>پنجابی</span></a></li><li class="interlanguage-link interwiki-ps mw-list-item"><a href="https://ps.wikipedia.org/wiki/%D9%86%D9%8A%D9%88%D9%BC%D8%B1%D9%88%D9%86" title="نيوټرون - pashto" lang="ps" hreflang="ps" data-title="نيوټرون" data-language-autonym="پښتو" data-language-local-name="pashto" class="interlanguage-link-target"><span>پښتو</span></a></li><li class="interlanguage-link interwiki-pt mw-list-item"><a href="https://pt.wikipedia.org/wiki/N%C3%AAutron" title="Nêutron - portoghese" lang="pt" hreflang="pt" data-title="Nêutron" data-language-autonym="Português" data-language-local-name="portoghese" class="interlanguage-link-target"><span>Português</span></a></li><li class="interlanguage-link interwiki-qu mw-list-item"><a href="https://qu.wikipedia.org/wiki/Niwtrun" title="Niwtrun - quechua" lang="qu" hreflang="qu" data-title="Niwtrun" data-language-autonym="Runa Simi" data-language-local-name="quechua" class="interlanguage-link-target"><span>Runa Simi</span></a></li><li class="interlanguage-link interwiki-ro mw-list-item"><a href="https://ro.wikipedia.org/wiki/Neutron" title="Neutron - rumeno" lang="ro" hreflang="ro" data-title="Neutron" data-language-autonym="Română" data-language-local-name="rumeno" class="interlanguage-link-target"><span>Română</span></a></li><li class="interlanguage-link interwiki-ru mw-list-item"><a href="https://ru.wikipedia.org/wiki/%D0%9D%D0%B5%D0%B9%D1%82%D1%80%D0%BE%D0%BD" title="Нейтрон - russo" lang="ru" hreflang="ru" data-title="Нейтрон" data-language-autonym="Русский" data-language-local-name="russo" class="interlanguage-link-target"><span>Русский</span></a></li><li class="interlanguage-link interwiki-scn mw-list-item"><a href="https://scn.wikipedia.org/wiki/Niutr%C3%B9ni" title="Niutrùni - siciliano" lang="scn" hreflang="scn" data-title="Niutrùni" data-language-autonym="Sicilianu" data-language-local-name="siciliano" class="interlanguage-link-target"><span>Sicilianu</span></a></li><li class="interlanguage-link interwiki-sd mw-list-item"><a href="https://sd.wikipedia.org/wiki/%D9%86%D9%8A%D9%88%D9%BD%D8%B1%D8%A7%D9%86" title="نيوٽران - sindhi" lang="sd" hreflang="sd" data-title="نيوٽران" data-language-autonym="سنڌي" data-language-local-name="sindhi" class="interlanguage-link-target"><span>سنڌي</span></a></li><li class="interlanguage-link interwiki-sh mw-list-item"><a href="https://sh.wikipedia.org/wiki/Neutron" title="Neutron - serbo-croato" lang="sh" hreflang="sh" data-title="Neutron" data-language-autonym="Srpskohrvatski / српскохрватски" data-language-local-name="serbo-croato" class="interlanguage-link-target"><span>Srpskohrvatski / српскохрватски</span></a></li><li class="interlanguage-link interwiki-si mw-list-item"><a href="https://si.wikipedia.org/wiki/%E0%B6%B1%E0%B7%92%E0%B6%BA%E0%B7%94%E0%B6%A7%E0%B7%8A%E2%80%8D%E0%B6%BB%E0%B7%9D%E0%B6%B1%E0%B6%BA" title="නියුට්‍රෝනය - singalese" lang="si" hreflang="si" data-title="නියුට්‍රෝනය" data-language-autonym="සිංහල" data-language-local-name="singalese" class="interlanguage-link-target"><span>සිංහල</span></a></li><li class="interlanguage-link interwiki-simple mw-list-item"><a href="https://simple.wikipedia.org/wiki/Neutron" title="Neutron - Simple English" lang="en-simple" hreflang="en-simple" data-title="Neutron" data-language-autonym="Simple English" data-language-local-name="Simple English" class="interlanguage-link-target"><span>Simple English</span></a></li><li class="interlanguage-link interwiki-sk mw-list-item"><a href="https://sk.wikipedia.org/wiki/Neutr%C3%B3n" title="Neutrón - slovacco" lang="sk" hreflang="sk" data-title="Neutrón" data-language-autonym="Slovenčina" data-language-local-name="slovacco" class="interlanguage-link-target"><span>Slovenčina</span></a></li><li class="interlanguage-link interwiki-skr mw-list-item"><a href="https://skr.wikipedia.org/wiki/%D9%86%DB%8C%D9%88%D9%B9%D8%B1%D8%A7%D9%86" title="نیوٹران - Saraiki" lang="skr" hreflang="skr" data-title="نیوٹران" data-language-autonym="سرائیکی" data-language-local-name="Saraiki" class="interlanguage-link-target"><span>سرائیکی</span></a></li><li class="interlanguage-link interwiki-sl mw-list-item"><a href="https://sl.wikipedia.org/wiki/Nevtron" title="Nevtron - sloveno" lang="sl" hreflang="sl" data-title="Nevtron" data-language-autonym="Slovenščina" data-language-local-name="sloveno" class="interlanguage-link-target"><span>Slovenščina</span></a></li><li class="interlanguage-link interwiki-so mw-list-item"><a href="https://so.wikipedia.org/wiki/Niyutaroon" title="Niyutaroon - somalo" lang="so" hreflang="so" data-title="Niyutaroon" data-language-autonym="Soomaaliga" data-language-local-name="somalo" class="interlanguage-link-target"><span>Soomaaliga</span></a></li><li class="interlanguage-link interwiki-sq mw-list-item"><a href="https://sq.wikipedia.org/wiki/Neutroni" title="Neutroni - albanese" lang="sq" hreflang="sq" data-title="Neutroni" data-language-autonym="Shqip" data-language-local-name="albanese" class="interlanguage-link-target"><span>Shqip</span></a></li><li class="interlanguage-link interwiki-sr mw-list-item"><a href="https://sr.wikipedia.org/wiki/%D0%9D%D0%B5%D1%83%D1%82%D1%80%D0%BE%D0%BD" title="Неутрон - serbo" lang="sr" hreflang="sr" data-title="Неутрон" data-language-autonym="Српски / srpski" data-language-local-name="serbo" class="interlanguage-link-target"><span>Српски / srpski</span></a></li><li class="interlanguage-link interwiki-stq mw-list-item"><a href="https://stq.wikipedia.org/wiki/Neutron" title="Neutron - saterfriesisch" lang="stq" hreflang="stq" data-title="Neutron" data-language-autonym="Seeltersk" data-language-local-name="saterfriesisch" class="interlanguage-link-target"><span>Seeltersk</span></a></li><li class="interlanguage-link interwiki-su mw-list-item"><a href="https://su.wikipedia.org/wiki/Neutron" title="Neutron - sundanese" lang="su" hreflang="su" data-title="Neutron" data-language-autonym="Sunda" data-language-local-name="sundanese" class="interlanguage-link-target"><span>Sunda</span></a></li><li class="interlanguage-link interwiki-sv mw-list-item"><a href="https://sv.wikipedia.org/wiki/Neutron" title="Neutron - svedese" lang="sv" hreflang="sv" data-title="Neutron" data-language-autonym="Svenska" data-language-local-name="svedese" class="interlanguage-link-target"><span>Svenska</span></a></li><li class="interlanguage-link interwiki-sw mw-list-item"><a href="https://sw.wikipedia.org/wiki/Nyutroni" title="Nyutroni - swahili" lang="sw" hreflang="sw" data-title="Nyutroni" data-language-autonym="Kiswahili" data-language-local-name="swahili" class="interlanguage-link-target"><span>Kiswahili</span></a></li><li class="interlanguage-link interwiki-ta mw-list-item"><a href="https://ta.wikipedia.org/wiki/%E0%AE%A8%E0%AF%8A%E0%AE%A4%E0%AF%81%E0%AE%AE%E0%AE%BF" title="நொதுமி - tamil" lang="ta" hreflang="ta" data-title="நொதுமி" data-language-autonym="தமிழ்" data-language-local-name="tamil" class="interlanguage-link-target"><span>தமிழ்</span></a></li><li class="interlanguage-link interwiki-te mw-list-item"><a href="https://te.wikipedia.org/wiki/%E0%B0%A8%E0%B1%8D%E0%B0%AF%E0%B1%82%E0%B0%9F%E0%B1%8D%E0%B0%B0%E0%B0%BE%E0%B0%A8%E0%B1%8D" title="న్యూట్రాన్ - telugu" lang="te" hreflang="te" data-title="న్యూట్రాన్" data-language-autonym="తెలుగు" data-language-local-name="telugu" class="interlanguage-link-target"><span>తెలుగు</span></a></li><li class="interlanguage-link interwiki-th mw-list-item"><a href="https://th.wikipedia.org/wiki/%E0%B8%99%E0%B8%B4%E0%B8%A7%E0%B8%95%E0%B8%A3%E0%B8%AD%E0%B8%99" title="นิวตรอน - thailandese" lang="th" hreflang="th" data-title="นิวตรอน" data-language-autonym="ไทย" data-language-local-name="thailandese" class="interlanguage-link-target"><span>ไทย</span></a></li><li class="interlanguage-link interwiki-tl mw-list-item"><a href="https://tl.wikipedia.org/wiki/Neutron" title="Neutron - tagalog" lang="tl" hreflang="tl" data-title="Neutron" data-language-autonym="Tagalog" data-language-local-name="tagalog" class="interlanguage-link-target"><span>Tagalog</span></a></li><li class="interlanguage-link interwiki-tr mw-list-item"><a href="https://tr.wikipedia.org/wiki/N%C3%B6tron" title="Nötron - turco" lang="tr" hreflang="tr" data-title="Nötron" data-language-autonym="Türkçe" data-language-local-name="turco" class="interlanguage-link-target"><span>Türkçe</span></a></li><li class="interlanguage-link interwiki-tt mw-list-item"><a href="https://tt.wikipedia.org/wiki/Neytron" title="Neytron - tataro" lang="tt" hreflang="tt" data-title="Neytron" data-language-autonym="Татарча / tatarça" data-language-local-name="tataro" class="interlanguage-link-target"><span>Татарча / tatarça</span></a></li><li class="interlanguage-link interwiki-uk mw-list-item"><a href="https://uk.wikipedia.org/wiki/%D0%9D%D0%B5%D0%B9%D1%82%D1%80%D0%BE%D0%BD" title="Нейтрон - ucraino" lang="uk" hreflang="uk" data-title="Нейтрон" data-language-autonym="Українська" data-language-local-name="ucraino" class="interlanguage-link-target"><span>Українська</span></a></li><li class="interlanguage-link interwiki-ur mw-list-item"><a href="https://ur.wikipedia.org/wiki/%D9%86%DB%8C%D9%88%D9%B9%D8%B1%D9%88%D9%86" title="نیوٹرون - urdu" lang="ur" hreflang="ur" data-title="نیوٹرون" data-language-autonym="اردو" data-language-local-name="urdu" class="interlanguage-link-target"><span>اردو</span></a></li><li class="interlanguage-link interwiki-uz mw-list-item"><a href="https://uz.wikipedia.org/wiki/Neytron" title="Neytron - uzbeco" lang="uz" hreflang="uz" data-title="Neytron" data-language-autonym="Oʻzbekcha / ўзбекча" data-language-local-name="uzbeco" class="interlanguage-link-target"><span>Oʻzbekcha / ўзбекча</span></a></li><li class="interlanguage-link interwiki-vec mw-list-item"><a href="https://vec.wikipedia.org/wiki/Neutron" title="Neutron - veneto" lang="vec" hreflang="vec" data-title="Neutron" data-language-autonym="Vèneto" data-language-local-name="veneto" class="interlanguage-link-target"><span>Vèneto</span></a></li><li class="interlanguage-link interwiki-vi mw-list-item"><a href="https://vi.wikipedia.org/wiki/Neutron" title="Neutron - vietnamita" lang="vi" hreflang="vi" data-title="Neutron" data-language-autonym="Tiếng Việt" data-language-local-name="vietnamita" class="interlanguage-link-target"><span>Tiếng Việt</span></a></li><li class="interlanguage-link interwiki-war mw-list-item"><a href="https://war.wikipedia.org/wiki/Neutron" title="Neutron - waray" lang="war" hreflang="war" data-title="Neutron" data-language-autonym="Winaray" data-language-local-name="waray" class="interlanguage-link-target"><span>Winaray</span></a></li><li class="interlanguage-link interwiki-wo mw-list-item"><a href="https://wo.wikipedia.org/wiki/Feppmaandu" title="Feppmaandu - wolof" lang="wo" hreflang="wo" data-title="Feppmaandu" data-language-autonym="Wolof" data-language-local-name="wolof" class="interlanguage-link-target"><span>Wolof</span></a></li><li class="interlanguage-link interwiki-wuu mw-list-item"><a href="https://wuu.wikipedia.org/wiki/%E4%B8%AD%E5%AD%90" title="中子 - wu" lang="wuu" hreflang="wuu" data-title="中子" data-language-autonym="吴语" data-language-local-name="wu" class="interlanguage-link-target"><span>吴语</span></a></li><li class="interlanguage-link interwiki-xal mw-list-item"><a href="https://xal.wikipedia.org/wiki/%D0%9D%D0%B5%D0%B9%D1%82%D1%80%D0%BE%D0%BD" title="Нейтрон - kalmyk" lang="xal" hreflang="xal" data-title="Нейтрон" data-language-autonym="Хальмг" data-language-local-name="kalmyk" class="interlanguage-link-target"><span>Хальмг</span></a></li><li class="interlanguage-link interwiki-xmf mw-list-item"><a href="https://xmf.wikipedia.org/wiki/%E1%83%9C%E1%83%94%E1%83%98%E1%83%A2%E1%83%A0%E1%83%9D%E1%83%9C%E1%83%98" title="ნეიტრონი - mengrelio" lang="xmf" hreflang="xmf" data-title="ნეიტრონი" data-language-autonym="მარგალური" data-language-local-name="mengrelio" class="interlanguage-link-target"><span>მარგალური</span></a></li><li class="interlanguage-link interwiki-yi mw-list-item"><a href="https://yi.wikipedia.org/wiki/%D7%A0%D7%99%D7%99%D7%98%D7%A8%D7%90%D7%9F" title="נייטראן - yiddish" lang="yi" hreflang="yi" data-title="נייטראן" data-language-autonym="ייִדיש" data-language-local-name="yiddish" class="interlanguage-link-target"><span>ייִדיש</span></a></li><li class="interlanguage-link interwiki-zh mw-list-item"><a href="https://zh.wikipedia.org/wiki/%E4%B8%AD%E5%AD%90" title="中子 - cinese" lang="zh" hreflang="zh" data-title="中子" data-language-autonym="中文" data-language-local-name="cinese" class="interlanguage-link-target"><span>中文</span></a></li><li class="interlanguage-link interwiki-zh-classical mw-list-item"><a href="https://zh-classical.wikipedia.org/wiki/%E4%B8%AD%E5%AD%90" title="中子 - cinese classico" lang="lzh" hreflang="lzh" data-title="中子" data-language-autonym="文言" data-language-local-name="cinese classico" class="interlanguage-link-target"><span>文言</span></a></li><li class="interlanguage-link interwiki-zh-min-nan mw-list-item"><a href="https://zh-min-nan.wikipedia.org/wiki/Tiong-ch%C3%BA" title="Tiong-chú - min nan" lang="nan" hreflang="nan" data-title="Tiong-chú" data-language-autonym="閩南語 / Bân-lâm-gú" data-language-local-name="min nan" class="interlanguage-link-target"><span>閩南語 / Bân-lâm-gú</span></a></li><li class="interlanguage-link interwiki-zh-yue mw-list-item"><a href="https://zh-yue.wikipedia.org/wiki/%E4%B8%AD%E5%AD%90" title="中子 - cantonese" lang="yue" hreflang="yue" data-title="中子" data-language-autonym="粵語" data-language-local-name="cantonese" class="interlanguage-link-target"><span>粵語</span></a></li><li class="interlanguage-link interwiki-zu mw-list-item"><a href="https://zu.wikipedia.org/wiki/INtunge" title="INtunge - zulu" lang="zu" hreflang="zu" data-title="INtunge" data-language-autonym="IsiZulu" data-language-local-name="zulu" class="interlanguage-link-target"><span>IsiZulu</span></a></li> </ul> <div class="after-portlet after-portlet-lang"><span class="wb-langlinks-edit wb-langlinks-link"><a href="https://www.wikidata.org/wiki/Special:EntityPage/Q2348#sitelinks-wikipedia" title="Modifica collegamenti interlinguistici" class="wbc-editpage">Modifica 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vi siano una <a href="/wiki/Aiuto:Bibliografia" title="Aiuto:Bibliografia">bibliografia</a> e/o dei <a href="/wiki/Wikipedia:Collegamenti_esterni" title="Wikipedia:Collegamenti esterni">collegamenti esterni</a>, manca la contestualizzazione delle fonti con <a href="/wiki/Aiuto:Note" title="Aiuto:Note">note a piè di pagina</a> o altri riferimenti precisi che indichino puntualmente la provenienza delle informazioni. Puoi <a class="external text" href="https://it.wikipedia.org/w/index.php?title=Neutrone&action=edit">migliorare questa voce</a> <a href="/wiki/Wikipedia:Uso_delle_fonti" title="Wikipedia:Uso delle fonti">citando le fonti</a> più precisamente. Segui i suggerimenti del <a href="/wiki/Progetto:Fisica" title="Progetto:Fisica">progetto di riferimento</a>.</div> </div> </div> </div> </div> <table class="infobox sinottico" summary="Tabella sinottica che riassume i principali dati del soggetto"><tbody><tr class="sinottico_testata"><th colspan="2" style="background:#bfdfff">Neutrone</th></tr><tr><td class="sinottico_testo_centrale" colspan="2"><figure class="mw-halign-center" typeof="mw:File/Frameless"><a href="/wiki/File:Neutron_quark_structure.svg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/b/bf/Neutron_quark_structure.svg/260px-Neutron_quark_structure.svg.png" decoding="async" width="260" height="260" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/b/bf/Neutron_quark_structure.svg/390px-Neutron_quark_structure.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/b/bf/Neutron_quark_structure.svg/520px-Neutron_quark_structure.svg.png 2x" data-file-width="800" data-file-height="800" /></a><figcaption></figcaption></figure>Modello a quark del neutrone</td></tr><tr><th>Classificazione</th><td>Particella composta (<a href="/wiki/Adrone" title="Adrone">adrone</a>) </td></tr><tr><th>Composizione</th><td>1 <a href="/wiki/Quark_up" title="Quark up">quark up</a>, 2 <a href="/wiki/Quark_down" title="Quark down">quark down</a> (udd) </td></tr><tr><th>Famiglia</th><td><a href="/wiki/Fermioni" class="mw-redirect" title="Fermioni">Fermioni</a> </td></tr><tr><th>Gruppo</th><td><a href="/wiki/Barioni" class="mw-redirect" title="Barioni">Barioni</a> </td></tr><tr><th><a href="/wiki/Interazioni_fondamentali" title="Interazioni fondamentali">Interazioni</a></th><td><a href="/wiki/Interazione_gravitazionale" title="Interazione gravitazionale">Gravitazionale</a>, <a href="/wiki/Interazione_elettromagnetica" title="Interazione elettromagnetica">elettromagnetica</a>, <a href="/wiki/Interazione_debole" title="Interazione debole">debole</a>, <a href="/wiki/Interazione_forte" title="Interazione forte">forte</a> </td></tr><tr><th>Simbolo</th><td><span style="white-space:nowrap">n</span> </td></tr><tr><th><a href="/wiki/Antiparticella" title="Antiparticella">Antiparticella</a></th><td><a href="/wiki/Antineutrone" title="Antineutrone">Antineutrone</a> (<span style="white-space:nowrap"><span style="text-decoration:overline;">n</span></span>) </td></tr><tr><th>Teorizzata</th><td><a href="/wiki/Ernest_Rutherford" title="Ernest Rutherford">Ernest Rutherford</a> (1920) </td></tr><tr><th>Scoperta</th><td><a href="/wiki/James_Chadwick" title="James Chadwick">James Chadwick</a> (1932) </td></tr><tr class="sinottico_divisione"><th colspan="2" style="background:#bfdfff">Proprietà fisiche</th></tr><tr><th><a href="/wiki/Massa_a_riposo" title="Massa a riposo">Massa</a></th><td><div> <ul><li><span class="nowrap"><span data-sort-value="6973167492735100000♠"></span>1,674927351(74)<span style="margin-left:0.25em;margin-right:0.15em;">×</span>10<sup>−27</sup> kg</span></li> <li><span class="nowrap"><span data-sort-value="6990150534955663086♠"></span>939,565378(21) <a href="/wiki/Elettronvolt" title="Elettronvolt">MeV</a></span>/<a href="/wiki/Velocit%C3%A0_della_luce" title="Velocità della luce">c²</a></li> <li><span class="nowrap"><span data-sort-value="7000100866491600000♠"></span>1,00866491600(43) <a href="/wiki/Unit%C3%A0_di_massa_atomica" title="Unità di massa atomica">u</a></span></li></ul> </div> </td></tr><tr><th><a href="/wiki/Carica_elementare" title="Carica elementare">Carica elettrica</a></th><td>0 <a href="/wiki/Carica_elementare" title="Carica elementare">e</a> </td></tr><tr><th><a href="/wiki/Spin" title="Spin">Spin</a></th><td>½ </td></tr></tbody></table> <p>Il <b>neutrone</b> è una <a href="/wiki/Particella_subatomica" title="Particella subatomica">particella subatomica</a> composita (non <a href="/wiki/Particella_elementare" title="Particella elementare">elementare</a>) con <a href="/wiki/Carica_elettrica" title="Carica elettrica">carica elettrica</a> netta pari a zero, costituita da un <a href="/wiki/Quark_up" title="Quark up">quark up</a> e due <a href="/wiki/Quark_down" title="Quark down">quark down</a>.<sup id="cite_ref-1" class="reference"><a href="#cite_note-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup> In quanto formato da <a href="/wiki/Quark_(particella)" title="Quark (particella)">quark</a> appartiene alla famiglia degli <a href="/wiki/Adrone" title="Adrone">adroni</a>, in particolare al gruppo dei <a href="/wiki/Barione" title="Barione">barioni</a>, con <a href="/wiki/Numero_barionico" title="Numero barionico">numero barionico</a> +1.<sup id="cite_ref-2" class="reference"><a href="#cite_note-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup> Avendo <a href="/wiki/Spin" title="Spin">spin</a> semi-intero (½ <span class="mwe-math-element"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle \hbar }"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <mi class="MJX-variant">ℏ</mi> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle \hbar }</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/de68de3a92517953436c93b5a76461d49160cc41" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.338ex; width:1.306ex; height:2.176ex;" alt="{\displaystyle \hbar }"></span>) è un <a href="/wiki/Fermione" title="Fermione">fermione</a>.<sup id="cite_ref-3" class="reference"><a href="#cite_note-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup> Il suo simbolo è <i>n</i>, mentre il numero di neutroni presenti in un dato <a href="/wiki/Nucleo_atomico" title="Nucleo atomico">nucleo atomico</a> ha simbolo <i>N</i> e corrisponde alla differenza tra il <a href="/wiki/Numero_di_massa" title="Numero di massa">numero di massa</a> <i>A</i> e il <a href="/wiki/Numero_atomico" title="Numero atomico">numero atomico</a> <i>Z</i>.<sup id="cite_ref-4" class="reference"><a href="#cite_note-4"><span class="cite-bracket">[</span>4<span class="cite-bracket">]</span></a></sup> Il neutrone non è stabile come particella isolata: è soggetto al <a href="/wiki/Decadimento_beta" title="Decadimento beta">decadimento beta negativo</a>, dando origine a un <a href="/wiki/Protone" title="Protone">protone</a>, un <a href="/wiki/Elettrone" title="Elettrone">elettrone</a> e un <a href="/wiki/Antineutrino" title="Antineutrino">antineutrino</a>.<sup id="cite_ref-5" class="reference"><a href="#cite_note-5"><span class="cite-bracket">[</span>5<span class="cite-bracket">]</span></a></sup> </p><p>I neutroni, insieme ai protoni, entrano a far parte dei <a href="/wiki/Nucleo_atomico" title="Nucleo atomico">nuclei</a> degli <a href="/wiki/Elemento_chimico" title="Elemento chimico">elementi chimici</a> facendo sì che esistano gli <a href="/wiki/Isotopo" title="Isotopo">isotopi</a> di un elemento, che infatti differiscono solo per il numero di neutroni nel loro nucleo; fa eccezione il nucleo più semplice, il <a href="/wiki/Prozio_(chimica)" title="Prozio (chimica)">pròzio</a>, primo isotopo dell'<a href="/wiki/Idrogeno" title="Idrogeno">idrogeno</a>, che contiene solo un protone ed è stabile. Eccetto questo caso, la presenza dei neutroni nel nucleo è essenziale per la loro stabilità. Al crescere del numero di massa dei diversi elementi, il numero di neutroni negli isotopi stabili di un elemento tende a crescere maggiormente rispetto al numero di protoni (numero atomico): il rapporto <i>N</i>/<i>Z</i>, che per elementi leggeri è intorno a 1, può arrivare a circa 1,5 e anche un po' oltre per quelli più pesanti.<sup id="cite_ref-6" class="reference"><a href="#cite_note-6"><span class="cite-bracket">[</span>6<span class="cite-bracket">]</span></a></sup> </p><p>La sua <a href="/wiki/Antiparticella" title="Antiparticella">antiparticella</a> è l'<a href="/wiki/Antineutrone" title="Antineutrone">antineutrone</a>,<sup id="cite_ref-7" class="reference"><a href="#cite_note-7"><span class="cite-bracket">[</span>7<span class="cite-bracket">]</span></a></sup> che ha la stessa massa, carica (nulla) e spin ed è composto dagli <a href="/wiki/Antiquark" title="Antiquark">antiquark</a> corrispondenti ai quark del neutrone. L'antineutrone è ugualmente soggetto al decadimento beta, con la stessa vita media e la stessa <a href="/wiki/Energia_di_decadimento" class="mw-redirect" title="Energia di decadimento">energia di decadimento</a>, dando luogo a un <a href="/wiki/Antiprotone" title="Antiprotone">antiprotone</a>, un <a href="/wiki/Positrone" title="Positrone">positrone</a> e un <a href="/wiki/Neutrino" title="Neutrino">neutrino</a> elettronico. Il suo numero barionico è -1, l'opposto di quello del neutrone. </p> <meta property="mw:PageProp/toc" /> <div class="mw-heading mw-heading2"><h2 id="Storia_ed_etimologia">Storia ed etimologia</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Neutrone&veaction=edit&section=1" title="Modifica la sezione Storia ed etimologia" class="mw-editsection-visualeditor"><span>modifica</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Neutrone&action=edit&section=1" title="Edit section's source code: Storia ed etimologia"><span>modifica wikitesto</span></a><span class="mw-editsection-bracket">]</span></span></div> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:James_Chadwick.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/b/b8/James_Chadwick.jpg/220px-James_Chadwick.jpg" decoding="async" width="220" height="275" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/b/b8/James_Chadwick.jpg/330px-James_Chadwick.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/b/b8/James_Chadwick.jpg/440px-James_Chadwick.jpg 2x" data-file-width="1320" data-file-height="1650" /></a><figcaption><a href="/wiki/James_Chadwick" title="James Chadwick">James Chadwick</a>, scopritore del neutrone</figcaption></figure> <p>Nel 1930, in <a href="/wiki/Germania" title="Germania">Germania</a>, <a href="/wiki/Walther_Bothe" title="Walther Bothe">Walther Bothe</a> e <a href="/w/index.php?title=Herbert_Becker&action=edit&redlink=1" class="new" title="Herbert Becker (la pagina non esiste)">Herbert Becker</a> osservarono che, se le particelle alfa del <a href="/wiki/Polonio" title="Polonio">polonio</a>, dotate di grande energia, incidevano su nuclei di elementi leggeri, specificatamente <a href="/wiki/Berillio" title="Berillio">berillio</a>, <a href="/wiki/Boro" title="Boro">boro</a> e <a href="/wiki/Litio" title="Litio">litio</a>, veniva prodotta una radiazione particolarmente penetrante. In un primo momento, si ritenne che potesse trattarsi di radiazione gamma, sebbene si mostrasse più penetrante dei <a href="/wiki/Raggi_gamma" title="Raggi gamma">raggi gamma</a> allora conosciuti e i dettagli dei risultati sperimentali fossero difficili da interpretare in tali termini. </p><p>Il successivo contributo fu apportato negli anni tra il 1931 e il 1932 da <a href="/wiki/Ir%C3%A8ne_Joliot-Curie" title="Irène Joliot-Curie">Irène Curie</a> e suo marito <a href="/wiki/Fr%C3%A9d%C3%A9ric_Joliot-Curie" title="Frédéric Joliot-Curie">Frédéric Joliot-Curie</a> a <a href="/wiki/Parigi" title="Parigi">Parigi</a>: essi mostrarono che questa radiazione misteriosa, se colpiva <a href="/wiki/Paraffina" title="Paraffina">paraffina</a> o altri composti contenenti <a href="/wiki/Idrogeno" title="Idrogeno">idrogeno</a>, ne provocava l'espulsione di protoni di alta energia. Ciò non era del tutto in contrasto con l'ipotesi di radiazione gamma; tuttavia, un'analisi quantitativa dettagliata rendeva difficile accettare questa ipotesi. All'inizio del 1932, il fisico <a href="/wiki/James_Chadwick" title="James Chadwick">James Chadwick</a>, in <a href="/wiki/Inghilterra" title="Inghilterra">Inghilterra</a>, eseguì una serie di misurazioni che mostrarono come l'ipotesi dei <a href="/wiki/Raggi_gamma" title="Raggi gamma">raggi gamma</a> non fosse in grado di spiegare completamente i dati sperimentali. Egli ipotizzò che la radiazione penetrante del berillio consistesse in particelle neutre dotate di massa approssimativamente uguale a quella dei protoni, la cui esistenza era stata proposta più di un decennio prima, senza che fossero stati realizzati esperimenti efficaci per rivelarla; pubblicò la sua scoperta nel 1932.<sup id="cite_ref-8" class="reference"><a href="#cite_note-8"><span class="cite-bracket">[</span>8<span class="cite-bracket">]</span></a></sup> </p><p>A questa particella neutra scoperta da Chadwick venne dato il nome di neutrone, ma fu il chimico W. D. Harkins a coniare per esso tale denominazione diversi anni prima (1921),<sup id="cite_ref-9" class="reference"><a href="#cite_note-9"><span class="cite-bracket">[</span>9<span class="cite-bracket">]</span></a></sup> quando il neutrone era ancora solo ipotizzato, sebbene attivamente cercato.<sup id="cite_ref-10" class="reference"><a href="#cite_note-10"><span class="cite-bracket">[</span>10<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-11" class="reference"><a href="#cite_note-11"><span class="cite-bracket">[</span>11<span class="cite-bracket">]</span></a></sup> A differenza che nel caso del protone, il cui nome <a href="/wiki/Ernest_Rutherford" title="Ernest Rutherford">Rutherford</a> fece derivare integralmente dal <a href="/wiki/Lingua_greca_antica" title="Lingua greca antica">greco</a> (radice e suffisso),<sup id="cite_ref-12" class="reference"><a href="#cite_note-12"><span class="cite-bracket">[</span>12<span class="cite-bracket">]</span></a></sup> il nome neutrone deriva dalla radice dell'aggettivo <a href="/wiki/Lingua_latina" title="Lingua latina">latino</a> <i>neutralis</i>, o anche da <i>neuter,</i> (neutro<sup id="cite_ref-13" class="reference"><a href="#cite_note-13"><span class="cite-bracket">[</span>13<span class="cite-bracket">]</span></a></sup>), cioè <i>neutr-</i>, cui venne aggiunto il suffisso <i>-on</i><sup id="cite_ref-14" class="reference"><a href="#cite_note-14"><span class="cite-bracket">[</span>14<span class="cite-bracket">]</span></a></sup> (<i>-one</i>, in italiano<sup id="cite_ref-15" class="reference"><a href="#cite_note-15"><span class="cite-bracket">[</span>15<span class="cite-bracket">]</span></a></sup>), suffisso che si suole dare alle particelle materiali e non materiali del mondo microscopico (<a href="/wiki/Mesone" title="Mesone">mesone</a>, <a href="/wiki/Muone" title="Muone">muone</a>, <a href="/wiki/Fotone" title="Fotone">fotone</a>, <a href="/wiki/Fonone" title="Fonone">fonone</a>, <a href="/wiki/Eccitone" title="Eccitone">eccitone</a>, etc.), o anche a intere classi di particelle (<a href="/wiki/Fermione" title="Fermione">fermioni</a>, <a href="/wiki/Bosone_(fisica)" title="Bosone (fisica)">bosoni</a>).<sup id="cite_ref-16" class="reference"><a href="#cite_note-16"><span class="cite-bracket">[</span>16<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-17" class="reference"><a href="#cite_note-17"><span class="cite-bracket">[</span>17<span class="cite-bracket">]</span></a></sup> </p><p>L'antineutrone venne scoperto oltre trent'anni dopo, nel 1956, da un gruppo di fisici al <a href="/wiki/Bevatron" title="Bevatron">Bevatron</a>, Bruce Cork, Glen Lambertson, <a href="/wiki/Oreste_Piccioni" title="Oreste Piccioni">Oreste Piccioni</a>, e William Wenzel.<sup id="cite_ref-18" class="reference"><a href="#cite_note-18"><span class="cite-bracket">[</span>18<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading2"><h2 id="Proprietà"><span id="Propriet.C3.A0"></span>Proprietà</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Neutrone&veaction=edit&section=2" title="Modifica la sezione Proprietà" class="mw-editsection-visualeditor"><span>modifica</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Neutrone&action=edit&section=2" title="Edit section's source code: Proprietà"><span>modifica wikitesto</span></a><span class="mw-editsection-bracket">]</span></span></div> <div class="mw-heading mw-heading3"><h3 id="Instabilità"><span id="Instabilit.C3.A0"></span>Instabilità</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Neutrone&veaction=edit&section=3" title="Modifica la sezione Instabilità" class="mw-editsection-visualeditor"><span>modifica</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Neutrone&action=edit&section=3" title="Edit section's source code: Instabilità"><span>modifica wikitesto</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Il neutrone ha una <a href="/wiki/Massa_a_riposo" title="Massa a riposo">massa a riposo</a> di 1,008664 <a href="/wiki/Unit%C3%A0_di_massa_atomica" title="Unità di massa atomica">u</a><sup id="cite_ref-19" class="reference"><a href="#cite_note-19"><span class="cite-bracket">[</span>19<span class="cite-bracket">]</span></a></sup> o 939,565 <a href="/wiki/Elettronvolt" title="Elettronvolt">MeV</a>/<a href="/wiki/Velocit%C3%A0_della_luce" title="Velocità della luce"><i>c</i>²</a>,<sup id="cite_ref-20" class="reference"><a href="#cite_note-20"><span class="cite-bracket">[</span>20<span class="cite-bracket">]</span></a></sup> leggermente superiore a quella del <a href="/wiki/Protone" title="Protone">protone</a> (1,007276 u o 938,272 MeV/<i>c</i>²):<sup id="cite_ref-21" class="reference"><a href="#cite_note-21"><span class="cite-bracket">[</span>21<span class="cite-bracket">]</span></a></sup> questo comporta che, contrariamente al protone, al di fuori del nucleo esso sia instabile:<sup id="cite_ref-22" class="reference"><a href="#cite_note-22"><span class="cite-bracket">[</span>22<span class="cite-bracket">]</span></a></sup> <a href="/wiki/Decadimento_particellare" title="Decadimento particellare">decade</a> in un protone, un <a href="/wiki/Elettrone" title="Elettrone">elettrone</a> e un <a href="/wiki/Antineutrino" title="Antineutrino">antineutrino</a> elettronico, secondo la reazione: </p><p><span class="mwe-math-element"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle n\to p+e^{-}+{\bar {\nu }}_{e}}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <mi>n</mi> <mo stretchy="false">→</mo> <mi>p</mi> <mo>+</mo> <msup> <mi>e</mi> <mrow class="MJX-TeXAtom-ORD"> <mo>−</mo> </mrow> </msup> <mo>+</mo> <msub> <mrow class="MJX-TeXAtom-ORD"> <mrow class="MJX-TeXAtom-ORD"> <mover> <mi>ν</mi> <mo stretchy="false">¯</mo> </mover> </mrow> </mrow> <mrow class="MJX-TeXAtom-ORD"> <mi>e</mi> </mrow> </msub> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle n\to p+e^{-}+{\bar {\nu }}_{e}}</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/19ef92763bb9e29efad869fa4394a2c4631f2e89" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.671ex; width:16.768ex; height:2.843ex;" alt="{\displaystyle n\to p+e^{-}+{\bar {\nu }}_{e}}"></span> </p><p>(<a href="/wiki/Decadimento_beta" title="Decadimento beta">decadimento beta</a>); l'energia rilasciata è <span class="nowrap"><span data-sort-value="6987125290201283400♠"></span>0,782<span style="margin-left:0.3em;margin-right:0.15em;">±</span>0,013 MeV</span> e si manifesta come <a href="/wiki/Energia_cinetica" title="Energia cinetica">energia cinetica</a> delle particelle prodotte; Questa <a href="/wiki/Energia_di_decadimento" class="mw-redirect" title="Energia di decadimento">energia di decadimento</a> risulta dalla differenza, moltiplicata per <i>c</i>², tra la massa a riposo del neutrone e la somma di quella del protone (938,272 MeV/<i>c</i>²), dell'<a href="/wiki/Elettrone" title="Elettrone">elettrone</a> (0,511 MeV/<i>c</i>²) e dell'<a href="/wiki/Antineutrino" title="Antineutrino">antineutrino</a> (trascurabile).<sup id="cite_ref-23" class="reference"><a href="#cite_note-23"><span class="cite-bracket">[</span>23<span class="cite-bracket">]</span></a></sup> In rarissimi eventi di tale decadimento l'elettrone emesso resta unito al protone prodotto, formando un atomo di idrogeno e l'antineutrino si porta via la grande maggioranza dell'energia di decadimento.<sup id="cite_ref-24" class="reference"><a href="#cite_note-24"><span class="cite-bracket">[</span>24<span class="cite-bracket">]</span></a></sup> La <a href="/wiki/Vita_media" title="Vita media">vita media</a> del neutrone è di circa 15 minuti;<sup id="cite_ref-25" class="reference"><a href="#cite_note-25"><span class="cite-bracket">[</span>25<span class="cite-bracket">]</span></a></sup> il valore accurato, riportato nell'edizione del 2018 della <i>Review of Particle Physics</i> è di 880,2 ± 1,0 s.<sup id="cite_ref-26" class="reference"><a href="#cite_note-26"><span class="cite-bracket">[</span>26<span class="cite-bracket">]</span></a></sup> </p><p>Il neutrone legato, cioè quello presente in un nucleo atomico, in diversi casi è stabile, ma in molti altri può decadere: lo fa in maniera analoga a quando è libero in tutti i casi in cui quel nucleo è soggetto a <a href="/wiki/Decadimento_beta" title="Decadimento beta">decadimento beta negativo</a>, come ad esempio accade per il nuclide <sup>14</sup>C (<a href="/wiki/Carbonio-14" title="Carbonio-14">radiocarbonio</a>):<sup id="cite_ref-27" class="reference"><a href="#cite_note-27"><span class="cite-bracket">[</span>27<span class="cite-bracket">]</span></a></sup> </p><p><sup>14</sup>C   →   <sup>14</sup>N + <i>e<sup>−</sup></i> + anti-<i>ν</i> </p> <div class="mw-heading mw-heading3"><h3 id="Neutralità"><span id="Neutralit.C3.A0"></span>Neutralità</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Neutrone&veaction=edit&section=4" title="Modifica la sezione Neutralità" class="mw-editsection-visualeditor"><span>modifica</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Neutrone&action=edit&section=4" title="Edit section's source code: Neutralità"><span>modifica wikitesto</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>La proprietà distintiva dei neutroni, già ipotizzata in precedenza e poi trovata sperimentalmente all'atto della scoperta, è l'assenza di <a href="/wiki/Carica_elettrica" title="Carica elettrica">carica elettrica</a> (<i>q</i> = 0), e ciò è in accordo con il fatto che risulta composto da due <a href="/wiki/Quark_down" title="Quark down">quark down</a> e un <a href="/wiki/Quark_up" title="Quark up">quark up</a>: </p> <dl><dd><span class="mwe-math-element"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle q_{n}=2q_{d}+q_{u}=2\cdot \left(-{\frac {1}{3}}\right)e+\left({\frac {2}{3}}\right)e=0}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <msub> <mi>q</mi> <mrow class="MJX-TeXAtom-ORD"> <mi>n</mi> </mrow> </msub> <mo>=</mo> <mn>2</mn> <msub> <mi>q</mi> <mrow class="MJX-TeXAtom-ORD"> <mi>d</mi> </mrow> </msub> <mo>+</mo> <msub> <mi>q</mi> <mrow class="MJX-TeXAtom-ORD"> <mi>u</mi> </mrow> </msub> <mo>=</mo> <mn>2</mn> <mo>⋅</mo> <mrow> <mo>(</mo> <mrow> <mo>−</mo> <mrow class="MJX-TeXAtom-ORD"> <mfrac> <mn>1</mn> <mn>3</mn> </mfrac> </mrow> </mrow> <mo>)</mo> </mrow> <mi>e</mi> <mo>+</mo> <mrow> <mo>(</mo> <mrow class="MJX-TeXAtom-ORD"> <mfrac> <mn>2</mn> <mn>3</mn> </mfrac> </mrow> <mo>)</mo> </mrow> <mi>e</mi> <mo>=</mo> <mn>0</mn> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle q_{n}=2q_{d}+q_{u}=2\cdot \left(-{\frac {1}{3}}\right)e+\left({\frac {2}{3}}\right)e=0}</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/65cc950659551f53c89bc0114ded1d8d2d3de89e" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -2.505ex; width:42.326ex; height:6.176ex;" alt="{\displaystyle q_{n}=2q_{d}+q_{u}=2\cdot \left(-{\frac {1}{3}}\right)e+\left({\frac {2}{3}}\right)e=0}"></span></dd></dl> <p>La carica elettrica nulla è alla base della loro alta capacità di penetrazione e della difficoltà di manipolazione. Inoltre sono assenti delle sorgenti naturali importanti, ulteriore motivo del ritardo della scoperta del neutrone rispetto alle altre due particelle che compongono l'atomo. </p><p>Nonostante l'assenza di carica elettrica complessiva, il neutrone presenta un <a href="/wiki/Momento_magnetico" title="Momento magnetico">momento magnetico</a>, per il quale sente l'influenza di <a href="/wiki/Campo_magnetico" title="Campo magnetico">campi magnetici</a>.<sup id="cite_ref-28" class="reference"><a href="#cite_note-28"><span class="cite-bracket">[</span>28<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading3"><h3 id="Penetrazione">Penetrazione</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Neutrone&veaction=edit&section=5" title="Modifica la sezione Penetrazione" class="mw-editsection-visualeditor"><span>modifica</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Neutrone&action=edit&section=5" title="Edit section's source code: Penetrazione"><span>modifica wikitesto</span></a><span class="mw-editsection-bracket">]</span></span></div> <style data-mw-deduplicate="TemplateStyles:r130657691">body:not(.skin-minerva) .mw-parser-output .vedi-anche{font-size:95%}</style><style data-mw-deduplicate="TemplateStyles:r139142988">.mw-parser-output .hatnote-content{align-items:center;display:flex}.mw-parser-output .hatnote-icon{flex-shrink:0}.mw-parser-output .hatnote-icon img{display:flex}.mw-parser-output .hatnote-text{font-style:italic}body:not(.skin-minerva) .mw-parser-output .hatnote{border:1px solid #CCC;display:flex;margin:.5em 0;padding:.2em .5em}body:not(.skin-minerva) .mw-parser-output .hatnote-text{padding-left:.5em}body.skin-minerva .mw-parser-output .hatnote-icon{padding-right:8px}body.skin-minerva .mw-parser-output .hatnote-icon img{height:auto;width:16px}body.skin--responsive .mw-parser-output .hatnote a.new{color:#d73333}body.skin--responsive .mw-parser-output .hatnote a.new:visited{color:#a55858}</style> <div class="hatnote noprint vedi-anche"> <div class="hatnote-content"><span class="noviewer hatnote-icon" typeof="mw:File"><span><img src="//upload.wikimedia.org/wikipedia/commons/thumb/8/87/Magnifying_glass_icon_mgx2.svg/18px-Magnifying_glass_icon_mgx2.svg.png" decoding="async" width="18" height="18" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/8/87/Magnifying_glass_icon_mgx2.svg/27px-Magnifying_glass_icon_mgx2.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/8/87/Magnifying_glass_icon_mgx2.svg/36px-Magnifying_glass_icon_mgx2.svg.png 2x" data-file-width="286" data-file-height="280" /></span></span> <span class="hatnote-text">Lo stesso argomento in dettaglio: <b><a href="/wiki/Urto_elastico#Moderatori_per_neutroni" title="Urto elastico">Urto elastico § Moderatori per neutroni</a></b>.</span></div> </div> <p>Le particelle cariche (come i protoni, gli elettroni e le particelle alfa) perdono energia nell'attraversare la materia, principalmente a causa delle forze elettromagnetiche che ionizzano gli atomi con cui tali particelle interagiscono. Il neutrone risente debolmente di queste forze in quanto ha carica elettrica nulla. Tuttavia il neutrone è soggetto all'azione della <a href="/wiki/Forza_nucleare_forte" class="mw-redirect" title="Forza nucleare forte">forza nucleare forte</a>, caratterizzata da un corto raggio d'azione, efficace soltanto nelle vicinanze di un nucleo. Per cui il neutrone si comporta in modo simile ad una sfera solida (probabilmente quanto di più lontano esista dal neutrone sotto moltissimi altri aspetti) che impatta altri corpi solidi (i nuclei del mezzo). Un neutrone libero prosegue il suo tragitto indisturbato fino a quando non urta "frontalmente" con un nucleo. </p><p>A causa della ridotta sezione trasversale dei nuclei rispetto allo spazio che li separa gli uni dagli altri, queste collisioni avvengono molto raramente e i neutroni percorrono grandi distanze prima di collidere. Distanze ancora maggiori vengono percorse prima di essere assorbiti da un nucleo, tanto maggiori quanto maggiore è la velocità del neutrone: la <a href="/wiki/Dose_assorbita" title="Dose assorbita">dose assorbita</a> da un materiale irraggiato con neutroni è tanto maggiore e tanto più concentrata in superficie quanto più bassa è la loro velocità:<sup id="cite_ref-29" class="reference"><a href="#cite_note-29"><span class="cite-bracket">[</span>29<span class="cite-bracket">]</span></a></sup> </p> <ul><li>i neutroni <b>veloci</b> da fissione (10 keV-10 MeV) depositano energia principalmente attraverso l'<a href="/wiki/Urto_elastico" title="Urto elastico">urto elastico</a> con più nuclei leggeri in successione, con cammini liberi medi di trasporto che vanno dal centimetro alla decina di centimetri in acqua e tessuti biologici. La dose assorbita è dovuta alle ionizzazioni causate dal rinculo di nuclei leggeri secondari.</li> <li>i neutroni <b>di risonanza</b> (1 keV-1 MeV) depositano energia principalmente per assorbimento quando la loro energia corrisponde ad una <a href="/wiki/Frequenza_di_risonanza" title="Frequenza di risonanza">frequenza di risonanza</a> di un nucleo vicino.</li> <li>i neutroni <b>lenti</b> (energia < 0,5 eV) hanno bassa lunghezza di trasporto, da qualche frazione di millimetro al centimetro, e grande <a href="/wiki/Sezione_d%27urto" title="Sezione d'urto">sezione d'urto</a> di assorbimento: anche in questo caso l'assorbimento è il principale tipo di interazione.</li></ul> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:String_theory.svg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/8/8a/String_theory.svg/150px-String_theory.svg.png" decoding="async" width="150" height="317" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/8/8a/String_theory.svg/225px-String_theory.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/8/8a/String_theory.svg/300px-String_theory.svg.png 2x" data-file-width="450" data-file-height="950" /></a><figcaption>5 diversi ordini di grandezza della materia:<br />1. Materia (macroscopico)<br />2.Struttura molecolare (atomi)<br />3.<a href="/wiki/Atomo" title="Atomo">Atomo</a> (neutrone, <a href="/wiki/Protone" title="Protone">protone</a>, <a href="/wiki/Elettrone" title="Elettrone">elettrone</a>)<br />4.Elettrone<br />5.<a href="/wiki/Quark_(particella)" title="Quark (particella)">Quark</a><br />6.<a href="/wiki/Teoria_delle_stringhe" title="Teoria delle stringhe">Stringhe</a></figcaption></figure> <div class="mw-heading mw-heading3"><h3 id="Pericolosità"><span id="Pericolosit.C3.A0"></span>Pericolosità</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Neutrone&veaction=edit&section=6" title="Modifica la sezione Pericolosità" class="mw-editsection-visualeditor"><span>modifica</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Neutrone&action=edit&section=6" title="Edit section's source code: Pericolosità"><span>modifica wikitesto</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>La loro <a href="/wiki/Massa_a_riposo" title="Massa a riposo">massa a riposo</a> maggiore di quella di altri tipi di <a href="/wiki/Radiazione" title="Radiazione">radiazione</a> li rende più pericolosi per i <a href="/wiki/Tessuto_(biologia)" title="Tessuto (biologia)">tessuti biologici</a> una volta che abbiano interagito e può dare esito nei tessuti biologici e nei materiali ordinari a rilascio secondario di <a href="/wiki/Raggi_gamma" title="Raggi gamma">raggi gamma</a> per <a href="/wiki/Cattura_neutronica" title="Cattura neutronica">cattura neutronica</a> (ad esempio con l'idrogeno risulta in un <a href="/wiki/Deutone" title="Deutone">deutone</a> e in un <a href="/wiki/Fotone" title="Fotone">fotone</a> da 2,2 MeV), a <a href="/wiki/Trasmutazione" title="Trasmutazione">trasmutazione</a> e talora a <a href="/wiki/Spallazione_nucleare" class="mw-redirect" title="Spallazione nucleare">spallazione</a> (per esempio l'attivazione dell'<a href="/wiki/Azoto" title="Azoto">azoto</a>-14 in <a href="/wiki/Carbonio-14" title="Carbonio-14">carbonio-14</a> con rilascio di un protone o la spallazione del <a href="/wiki/Piombo" title="Piombo">piombo</a> sfruttata nei sistemi guidati da acceleratore), causando trasmutazione e per i transuranici <a href="/wiki/Fertilizzazione_(nucleare)" title="Fertilizzazione (nucleare)">fertilizzazione</a>. Il loro <a href="/wiki/Fattore_di_dose" class="mw-redirect" title="Fattore di dose">fattore di pericolosità</a> <i>una volta assorbiti</i> rispetto alle <a href="/wiki/Radiazioni_gamma" class="mw-redirect" title="Radiazioni gamma">radiazioni gamma</a> vale: </p> <dl><dd><span class="mwe-math-element"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle w_{n}=5+17\,\exp \left(-{\frac {(\ln {\frac {2E}{\mathrm {MeV} }})^{2}}{6}}\right)}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <msub> <mi>w</mi> <mrow class="MJX-TeXAtom-ORD"> <mi>n</mi> </mrow> </msub> <mo>=</mo> <mn>5</mn> <mo>+</mo> <mn>17</mn> <mspace width="thinmathspace" /> <mi>exp</mi> <mo>⁡</mo> <mrow> <mo>(</mo> <mrow> <mo>−</mo> <mrow class="MJX-TeXAtom-ORD"> <mfrac> <mrow> <mo stretchy="false">(</mo> <mi>ln</mi> <mo>⁡</mo> <mrow class="MJX-TeXAtom-ORD"> <mfrac> <mrow> <mn>2</mn> <mi>E</mi> </mrow> <mrow class="MJX-TeXAtom-ORD"> <mi mathvariant="normal">M</mi> <mi mathvariant="normal">e</mi> <mi mathvariant="normal">V</mi> </mrow> </mfrac> </mrow> <msup> <mo stretchy="false">)</mo> <mrow class="MJX-TeXAtom-ORD"> <mn>2</mn> </mrow> </msup> </mrow> <mn>6</mn> </mfrac> </mrow> </mrow> <mo>)</mo> </mrow> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle w_{n}=5+17\,\exp \left(-{\frac {(\ln {\frac {2E}{\mathrm {MeV} }})^{2}}{6}}\right)}</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/acc3852ec67d1764c235a5e910d8a5fb9e9968f9" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -3.171ex; width:32.457ex; height:7.843ex;" alt="{\displaystyle w_{n}=5+17\,\exp \left(-{\frac {(\ln {\frac {2E}{\mathrm {MeV} }})^{2}}{6}}\right)}"></span></dd></dl> <p>e cioè a seconda della loro <a href="/wiki/Energia_cinetica#Meccanica_relativistica" title="Energia cinetica">energia</a> passano da una pericolosità rispettivamente 5 volte maggiore dei <a href="/wiki/Fotoni" class="mw-redirect" title="Fotoni">fotoni</a> se sono <i>termici</i> (E < 10 keV) o 25 volte maggiore se sono <i>veloci</i> <span class="nowrap">(100 keV < E < 2 MeV).</span> Si noti però che questo fattore non tiene conto della precedente proprietà di penetranza, quindi la pericolosità relativa di un fascio veloce rispetto ad uno termico è in realtà sovrastimata da questo fattore. </p> <div class="mw-heading mw-heading3"><h3 id="Evanescenza">Evanescenza</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Neutrone&veaction=edit&section=7" title="Modifica la sezione Evanescenza" class="mw-editsection-visualeditor"><span>modifica</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Neutrone&action=edit&section=7" title="Edit section's source code: Evanescenza"><span>modifica wikitesto</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>La rivelazione indiretta dei neutroni si basa sulla trasmissione del moto ad atomi leggeri del mezzo che avviene nelle collisioni elastiche: un nucleo molto pesante acquisisce per <a href="/wiki/Urto_elastico" title="Urto elastico">urto elastico</a> una piccola frazione della <a href="/wiki/Quantit%C3%A0_di_moto" title="Quantità di moto">quantità di moto</a>; invece un protone (che ha una massa approssimativamente pari a quella del neutrone) viene proiettato in avanti con una frazione significativa della velocità originaria del neutrone, che a sua volta rallenta. Dato che i nuclei messi in moto mediante queste collisioni sono carichi, producono ionizzazione e possono essere facilmente rilevati sperimentalmente. </p> <div class="mw-heading mw-heading3"><h3 id="Immanovrabilità"><span id="Immanovrabilit.C3.A0"></span>Immanovrabilità</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Neutrone&veaction=edit&section=8" title="Modifica la sezione Immanovrabilità" class="mw-editsection-visualeditor"><span>modifica</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Neutrone&action=edit&section=8" title="Edit section's source code: Immanovrabilità"><span>modifica wikitesto</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Le particelle cariche possono essere accelerate, decelerate e deflesse dal <a href="/wiki/Campo_elettrico" title="Campo elettrico">campo elettrostatico</a>, che però non ha praticamente effetto sui neutroni, rendendoli manovrabili solo con <a href="/wiki/Campo_magnetico" title="Campo magnetico">campo magnetico</a> dato il loro momento di <a href="/wiki/Dipolo_magnetico" title="Dipolo magnetico">dipolo magnetico</a> piuttosto alto rispetto al <a href="/wiki/Spin" title="Spin">momento di quantità di moto intrinseco</a>. Il segno negativo di tale momento magnetico simula la rotazione di cariche negative in senso antiorario intorno alla direzione dello spin. L'unico mezzo per controllare i neutroni liberi è quello di porre dei nuclei sulla loro <a href="/wiki/Traiettoria" title="Traiettoria">traiettoria</a>, in modo che i neutroni vengano rallentati, deflessi o assorbiti nella collisione. Questi sono i principali effetti regolatori nei reattori e nelle armi nucleari. </p> <div class="mw-heading mw-heading2"><h2 id="Sviluppi">Sviluppi</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Neutrone&veaction=edit&section=9" title="Modifica la sezione Sviluppi" class="mw-editsection-visualeditor"><span>modifica</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Neutrone&action=edit&section=9" title="Edit section's source code: Sviluppi"><span>modifica wikitesto</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>L'esistenza di pacchetti stabili di quattro neutroni, o <a href="/wiki/Tetraneutrone" title="Tetraneutrone">tetraneutroni</a>, è stata ipotizzata da un gruppo guidato da <a href="/w/index.php?title=Francisco-Miguel_Marqu%C3%A9s&action=edit&redlink=1" class="new" title="Francisco-Miguel Marqués (la pagina non esiste)">Francisco-Miguel Marqués</a> del <a href="/wiki/Centre_national_de_la_recherche_scientifique" title="Centre national de la recherche scientifique">CNRS</a> Laboratory for Nuclear Physics, basandosi sulla disintegrazione di nuclei di <a href="/wiki/Berillio" title="Berillio">berillio</a>-14. La teoria corrente suppone che questi pacchetti non dovrebbero essere stabili e quindi non dovrebbero esistere. </p> <div class="mw-heading mw-heading2"><h2 id="Note">Note</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Neutrone&veaction=edit&section=10" title="Modifica la sezione Note" class="mw-editsection-visualeditor"><span>modifica</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Neutrone&action=edit&section=10" title="Edit section's source code: Note"><span>modifica wikitesto</span></a><span class="mw-editsection-bracket">]</span></span></div> <div class="mw-references-wrap mw-references-columns"><ol class="references"> <li id="cite_note-1"><a href="#cite_ref-1"><b>^</b></a> <span class="reference-text"><cite class="citation web" style="font-style:normal">(<span style="font-weight:bolder; font-size:80%"><abbr title="inglese">EN</abbr></span>) Dirk Dubbers e Michael G. 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Marciano, Alberto Sirlin, <a rel="nofollow" class="external text" href="https://arxiv.org/abs/1802.01804v3"><span style="font-style:italic;">Neutron Lifetime and Axial Coupling Connection</span></a>, su <span style="font-style:italic;">arXiv.org</span>, 6 febbraio 2018. <small>URL consultato il 9 agosto 2024</small>.</cite></span> </li> <li id="cite_note-25"><a href="#cite_ref-25"><b>^</b></a> <span class="reference-text"><cite class="citation libro" style="font-style:normal">(<span style="font-weight:bolder; font-size:80%"><abbr title="inglese">EN</abbr></span>) K. Heyde Taylor e Francis, <span style="font-style:italic;">Basic Ideas and Concepts in Nuclear Physics: An Introductory Approach</span>, 3ª ed., 2004, <a href="/wiki/Digital_object_identifier" title="Digital object identifier">DOI</a>:<a rel="nofollow" class="external text" href="https://dx.doi.org/10.1201%2F9781420054941">10.1201/9781420054941</a>, <a href="/wiki/ISBN" title="ISBN">ISBN</a> <a href="/wiki/Speciale:RicercaISBN/978-0-7503-0980-6" title="Speciale:RicercaISBN/978-0-7503-0980-6">978-0-7503-0980-6</a>.</cite></span> </li> <li id="cite_note-26"><a href="#cite_ref-26"><b>^</b></a> <span class="reference-text"><cite class="citation pubblicazione" style="font-style:normal">(<span style="font-weight:bolder; font-size:80%"><abbr title="inglese">EN</abbr></span>) M. Tanabashi, K. Hagiwara e K. Hikasa, <a rel="nofollow" class="external text" href="https://link.aps.org/doi/10.1103/PhysRevD.98.030001"><span style="font-style:italic;">Review of Particle Physics</span></a>, in <span style="font-style:italic;">Physical Review D</span>, vol. 98, n. 3, 17 agosto 2018, p. 1653, <a href="/wiki/Digital_object_identifier" title="Digital object identifier">DOI</a>:<a rel="nofollow" class="external text" href="https://dx.doi.org/10.1103%2FPhysRevD.98.030001">10.1103/PhysRevD.98.030001</a>. <small>URL consultato il 9 agosto 2024</small>.</cite></span> </li> <li id="cite_note-27"><a href="#cite_ref-27"><b>^</b></a> <span class="reference-text"><cite class="citation news" style="font-style:normal">(<span style="font-weight:bolder; font-size:80%"><abbr title="inglese">EN</abbr></span>) Robin McKie, <a rel="nofollow" class="external text" href="https://www.theguardian.com/science/2019/aug/10/most-important-isotope-how-carbon-14-revolutionised-science"><span style="font-style:italic;">‘Perhaps the most important isotope’: how carbon-14 revolutionised science</span></a>, in <span style="font-style:italic;">The Observer</span>, 10 agosto 2019. <small>URL consultato il 9 agosto 2024</small>.</cite></span> </li> <li id="cite_note-28"><a href="#cite_ref-28"><b>^</b></a> <span class="reference-text"><cite class="citation pubblicazione" style="font-style:normal"> Takayuki Oku, Satoru Yamada e Takenao Shinohara, <a rel="nofollow" class="external text" href="https://www.sciencedirect.com/science/article/pii/S0921452607001615"><span style="font-style:italic;">Highly polarized cold neutron beam obtained by using a quadrupole magnet</span></a>, in <span style="font-style:italic;">Physica B: Condensed Matter</span>, vol. 397, n. 1, 15 luglio 2007, pp. 188–191, <a href="/wiki/Digital_object_identifier" title="Digital object identifier">DOI</a>:<a rel="nofollow" class="external text" href="https://dx.doi.org/10.1016%2Fj.physb.2007.02.055">10.1016/j.physb.2007.02.055</a>. <small>URL consultato il 9 agosto 2024</small>.</cite></span> </li> <li id="cite_note-29"><a href="#cite_ref-29"><b>^</b></a> <span class="reference-text"><cite class="citation web" style="font-style:normal"> <a rel="nofollow" class="external text" href="https://web.archive.org/web/20140227011546/http://www-zeus.desy.de/~arneodo/corso/radioprotezione/lezioni/lezione1-2012.pdf"><span style="font-style:italic;">Arneoldo, Lezioni di radioprotezione, p.23</span></a> (<span style="font-weight: bolder; font-size:80%"><abbr title="documento in formato PDF">PDF</abbr></span>), su <span style="font-style:italic;">www-zeus.desy.de</span>. <small>URL consultato il 10 giugno 2013</small> <small>(archiviato dall'<abbr title="http://www-zeus.desy.de/~arneodo/corso/radioprotezione/lezioni/lezione1-2012.pdf">url originale</abbr> il 27 febbraio 2014)</small>.</cite></span> </li> </ol></div> <div class="mw-heading mw-heading2"><h2 id="Bibliografia">Bibliografia</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Neutrone&veaction=edit&section=11" title="Modifica la sezione Bibliografia" class="mw-editsection-visualeditor"><span>modifica</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Neutrone&action=edit&section=11" title="Edit section's source code: Bibliografia"><span>modifica wikitesto</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li><cite class="citation libro" style="font-style:normal">(<span style="font-weight:bolder; font-size:80%"><abbr title="francese">FR</abbr></span>) Albert Messiah, <span style="font-style:italic;">Mécanique quantique, tome 1</span>, Dunod, 1966.</cite></li> <li><cite class="citation libro" style="font-style:normal"> <a href="/wiki/Paul_Dirac" title="Paul Dirac">Paul Dirac</a>, <span style="font-style:italic;">I principi della meccanica quantistica</span>, Bollati Boringhieri, 1971.</cite></li> <li><cite class="citation libro" style="font-style:normal">(<span style="font-weight:bolder; font-size:80%"><abbr title="inglese">EN</abbr></span>) <a href="/wiki/John_von_Neumann" title="John von Neumann">John von Neumann</a>, <a rel="nofollow" class="external text" href="https://archive.org/details/mathematicalfoun0613vonn"><span style="font-style:italic;">Mathematical foundations of Quantum Mechanics</span></a>, Princeton University Press, 1955.</cite></li> <li><cite class="citation libro" style="font-style:normal">(<span style="font-weight:bolder; font-size:80%"><abbr title="inglese">EN</abbr></span>) Stephen Gustafson e Israel M. Sigal, <a rel="nofollow" class="external text" href="https://archive.org/details/mathematicalconc0000gust"><span style="font-style:italic;">Mathematical concepts of quantum mechanics</span></a>, Springer, 2006.</cite></li> <li><cite class="citation libro" style="font-style:normal">(<span style="font-weight:bolder; font-size:80%"><abbr title="inglese">EN</abbr></span>) Franz Schwabl, <span style="font-style:italic;">Quantum mechanics</span>, Springer, 2002.</cite></li> <li><cite class="citation libro" style="font-style:normal">(<span style="font-weight:bolder; font-size:80%"><abbr title="inglese">EN</abbr></span>) Franco Strocchi, <span style="font-style:italic;">An introduction to the mathematical structure of quantum mechanics, a short course for mathematicians</span>, World Scientific Publishing, 2005.</cite></li> <li><cite class="citation libro" style="font-style:normal">(<span style="font-weight:bolder; font-size:80%"><abbr title="inglese">EN</abbr></span>) <a href="/wiki/Linus_Pauling" title="Linus Pauling">L. Pauling</a> e E. B. Wilson, <a rel="nofollow" class="external text" href="https://www.archive.org/details/introductiontoqu031712mbp"><span style="font-style:italic;">Introduction to Quantum Mechanics with Applications to Chemistry</span></a>, New York, McGrawHill, 1935.</cite></li> <li><cite class="citation libro" style="font-style:normal">(<span style="font-weight:bolder; font-size:80%"><abbr title="inglese">EN</abbr></span>) S. Dushman, <a rel="nofollow" class="external text" href="https://www.archive.org/details/elementsofquantu031067mbp"><span style="font-style:italic;">The Elements of Quantum Mechanics</span></a>, New York, John Wiley & Sons, 1938.</cite></li> <li><cite class="citation libro" style="font-style:normal">(<span style="font-weight:bolder; font-size:80%"><abbr title="inglese">EN</abbr></span>) <a href="/wiki/Max_Planck" title="Max Planck">M. Planck</a>, L. Silberstein e H. T. Clarke, <a rel="nofollow" class="external text" href="https://www.archive.org/details/origindevelopmen00planrich"><span style="font-style:italic;">The origin and development of the quantum theory</span></a>, Oxford, Clarendon Press, 1922.</cite></li> <li><cite class="citation libro" style="font-style:normal">(<span style="font-weight:bolder; font-size:80%"><abbr title="inglese">EN</abbr></span>) F. Reiche, H. Hatfield e L. Henry, <a rel="nofollow" class="external text" href="https://www.archive.org/details/quantumtheory00reiciala"><span style="font-style:italic;">The Quantum Theory</span></a>, New York, E.P. Dutton & co., 1922.</cite>)</li> <li><cite class="citation libro" style="font-style:normal">(<span style="font-weight:bolder; font-size:80%"><abbr title="inglese">EN</abbr></span>) J. F. Frenkel, <a rel="nofollow" class="external text" href="https://www.archive.org/details/wavemechanics030681mbp"><span style="font-style:italic;">Wave Mechanics: Advanced General Theory</span></a>, Oxford, Clarendon Press, 1934.</cite></li> <li><cite class="citation libro" style="font-style:normal">(<span style="font-weight:bolder; font-size:80%"><abbr title="inglese">EN</abbr></span>) <a href="/wiki/Nevill_Francis_Mott" title="Nevill Francis Mott">N. F. Mott</a>, <a rel="nofollow" class="external text" href="https://www.archive.org/details/elementsofwaveme031632mbp"><span style="font-style:italic;">Elements of Wave Mechanics</span></a>, Cambridge University Press, 1958.</cite></li> <li><cite class="citation libro" style="font-style:normal"> <a href="/wiki/Giancarlo_Ghirardi" title="Giancarlo Ghirardi">Giancarlo Ghirardi</a>, <span style="font-style:italic;">Un'occhiata alle carte di Dio</span>, Net, 1997.</cite></li></ul> <div class="mw-heading mw-heading2"><h2 id="Voci_correlate">Voci correlate</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Neutrone&veaction=edit&section=12" title="Modifica la sezione Voci correlate" class="mw-editsection-visualeditor"><span>modifica</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Neutrone&action=edit&section=12" title="Edit section's source code: Voci correlate"><span>modifica wikitesto</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li><a href="/wiki/Neutrone_termico" title="Neutrone termico">Neutrone termico</a></li> <li><a href="/wiki/Scattering_di_neutroni" title="Scattering di neutroni">Scattering di neutroni</a></li> <li><a href="/wiki/Attivazione_neutronica" title="Attivazione neutronica">Attivazione neutronica</a></li> <li><a href="/wiki/Cattura_neutronica" title="Cattura neutronica">Cattura neutronica</a></li> <li><a href="/wiki/Magnetone_nucleare" title="Magnetone nucleare">Magnetone nucleare</a></li> <li><a href="/wiki/Fissione_nucleare" title="Fissione nucleare">Fissione nucleare</a></li> <li><a href="/wiki/Protone" title="Protone">Protone</a></li> <li><a href="/wiki/Elettrone" title="Elettrone">Elettrone</a></li> <li><a href="/wiki/Neutrino" title="Neutrino">Neutrino</a></li></ul> <div class="mw-heading mw-heading2"><h2 id="Altri_progetti">Altri progetti</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Neutrone&veaction=edit&section=13" title="Modifica la sezione Altri progetti" class="mw-editsection-visualeditor"><span>modifica</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Neutrone&action=edit&section=13" title="Edit section's source code: Altri progetti"><span>modifica wikitesto</span></a><span class="mw-editsection-bracket">]</span></span></div> <div id="interProject" class="toccolours" style="display: none; clear: both; margin-top: 2em"><p id="sisterProjects" style="background-color: #efefef; color: black; font-weight: bold; margin: 0"><span>Altri progetti</span></p><ul title="Collegamenti verso gli altri progetti Wikimedia"> <li class="" title=""><a href="https://it.wiktionary.org/wiki/neutrone" class="extiw" title="wikt:neutrone">Wikizionario</a></li> <li class="" title=""><span class="plainlinks" title="commons:Category:Neutrons"><a class="external text" href="https://commons.wikimedia.org/wiki/Category:Neutrons?uselang=it">Wikimedia Commons</a></span></li></ul></div> <ul><li><span typeof="mw:File"><a href="https://it.wiktionary.org/wiki/" title="Collabora a Wikizionario"><img alt="Collabora a Wikizionario" src="//upload.wikimedia.org/wikipedia/commons/thumb/f/f9/Wiktionary_small.svg/18px-Wiktionary_small.svg.png" decoding="async" width="18" height="18" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/f/f9/Wiktionary_small.svg/27px-Wiktionary_small.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/f/f9/Wiktionary_small.svg/36px-Wiktionary_small.svg.png 2x" data-file-width="350" data-file-height="350" /></a></span> <a href="https://it.wiktionary.org/wiki/" class="extiw" title="wikt:">Wikizionario</a> contiene il lemma di dizionario «<b><a href="https://it.wiktionary.org/wiki/neutrone" class="extiw" title="wikt:neutrone">neutrone</a></b>»</li> <li><span typeof="mw:File"><a href="https://commons.wikimedia.org/wiki/?uselang=it" title="Collabora a Wikimedia Commons"><img alt="Collabora a Wikimedia Commons" src="//upload.wikimedia.org/wikipedia/commons/thumb/4/4a/Commons-logo.svg/18px-Commons-logo.svg.png" decoding="async" width="18" height="24" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/4/4a/Commons-logo.svg/27px-Commons-logo.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/4/4a/Commons-logo.svg/36px-Commons-logo.svg.png 2x" data-file-width="1024" data-file-height="1376" /></a></span> <span class="plainlinks"><a class="external text" href="https://commons.wikimedia.org/wiki/?uselang=it">Wikimedia Commons</a></span> contiene immagini o altri file su <b><span class="plainlinks"><a class="external text" href="https://commons.wikimedia.org/wiki/Category:Neutrons?uselang=it">neutrone</a></span></b></li></ul> <div class="mw-heading mw-heading2"><h2 id="Collegamenti_esterni">Collegamenti esterni</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Neutrone&veaction=edit&section=14" title="Modifica la sezione Collegamenti esterni" class="mw-editsection-visualeditor"><span>modifica</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Neutrone&action=edit&section=14" title="Edit section's source code: Collegamenti esterni"><span>modifica wikitesto</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li class="mw-empty-elt"></li> <li><cite id="CITEREFBritannica.com" class="citation web" style="font-style:normal">(<span style="font-weight:bolder; font-size:80%"><abbr title="inglese">EN</abbr></span>) <a rel="nofollow" class="external text" href="https://www.britannica.com/science/neutron"><span style="font-style:italic;">neutron</span></a>, su <span style="font-style:italic;"><a href="/wiki/Enciclopedia_Britannica" title="Enciclopedia Britannica">Enciclopedia Britannica</a></span>, Encyclopædia Britannica, Inc.</cite> <span class="mw-valign-text-top noprint" typeof="mw:File/Frameless"><a href="https://www.wikidata.org/wiki/Q2348#P1417" title="Modifica su Wikidata"><img alt="Modifica su Wikidata" src="//upload.wikimedia.org/wikipedia/commons/thumb/7/73/Blue_pencil.svg/10px-Blue_pencil.svg.png" decoding="async" width="10" height="10" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/7/73/Blue_pencil.svg/15px-Blue_pencil.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/7/73/Blue_pencil.svg/20px-Blue_pencil.svg.png 2x" data-file-width="600" data-file-height="600" /></a></span></li> <li><cite class="citation web" style="font-style:normal"> <a rel="nofollow" class="external text" href="http://nmi3.eu"><span style="font-style:italic;">NMI3: Iniziativa Europea di neutroni e muoni</span></a>, su <span style="font-style:italic;">nmi3.eu</span>.</cite></li> <li><cite class="citation web" style="font-style:normal"> <a rel="nofollow" class="external text" href="http://neutronsources.org"><span style="font-style:italic;">neutronsources.org</span></a>.</cite></li> <li><cite class="citation web" style="font-style:normal">(<span style="font-weight:bolder; font-size:80%"><abbr title="inglese">EN</abbr></span>) <a rel="nofollow" class="external text" href="http://goldbook.iupac.org/N04116.html"><span style="font-style:italic;">IUPAC Gold Book, "neutron"</span></a>, su <span style="font-style:italic;">goldbook.iupac.org</span>.</cite></li></ul> <style data-mw-deduplicate="TemplateStyles:r141815314">.mw-parser-output .navbox{border:1px solid #aaa;clear:both;margin:auto;padding:2px;width:100%}.mw-parser-output .navbox th{padding-left:1em;padding-right:1em;text-align:center}.mw-parser-output .navbox>tbody>tr:first-child>th{background:#ccf;font-size:90%;width:100%;color:var(--color-base,black)}.mw-parser-output .navbox_navbar{float:left;margin:0;padding:0 10px 0 0;text-align:left;width:6em}.mw-parser-output .navbox_title{font-size:110%}.mw-parser-output .navbox_abovebelow{background:#ddf;font-size:90%;font-weight:normal}.mw-parser-output .navbox_group{background:#ddf;font-size:90%;padding:0 10px;white-space:nowrap}.mw-parser-output .navbox_list{font-size:90%;width:100%}.mw-parser-output .navbox_list a{white-space:nowrap}html:not(.vector-feature-night-mode-enabled) .mw-parser-output .navbox_odd{background:#fdfdfd;color:var(--color-base,black)}html:not(.vector-feature-night-mode-enabled) .mw-parser-output .navbox_even{background:#f7f7f7;color:var(--color-base,black)}.mw-parser-output .navbox a.mw-selflink{color:var(--color-base,black)}.mw-parser-output .navbox_center{text-align:center}.mw-parser-output .navbox .navbox_image{padding-left:7px;vertical-align:middle;width:0}.mw-parser-output .navbox+.navbox{margin-top:-1px}.mw-parser-output .navbox .mw-collapsible-toggle{font-weight:normal;text-align:right;width:7em}body.skin--responsive .mw-parser-output .navbox_image img{max-width:none!important}.mw-parser-output .subnavbox{margin:-3px;width:100%}.mw-parser-output .subnavbox_group{background:#e6e6ff;padding:0 10px}@media screen{html.skin-theme-clientpref-night .mw-parser-output .navbox>tbody>tr:first-child>th{background:var(--background-color-interactive)!important}html.skin-theme-clientpref-night .mw-parser-output .navbox th{color:var(--color-base)!important}html.skin-theme-clientpref-night .mw-parser-output .navbox_abovebelow,html.skin-theme-clientpref-night .mw-parser-output .navbox_group{background:var(--background-color-interactive-subtle)!important}html.skin-theme-clientpref-night .mw-parser-output .subnavbox_group{background:var(--background-color-neutral-subtle)!important}}@media screen and (prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .navbox>tbody>tr:first-child>th{background:var(--background-color-interactive)!important}html.skin-theme-clientpref-os .mw-parser-output .navbox th{color:var(--color-base)!important}html.skin-theme-clientpref-os .mw-parser-output .navbox_abovebelow,html.skin-theme-clientpref-os .mw-parser-output .navbox_group{background:var(--background-color-interactive-subtle)!important}html.skin-theme-clientpref-os .mw-parser-output .subnavbox_group{background:var(--background-color-neutral-subtle)!important}}</style><table class="navbox mw-collapsible mw-collapsed noprint metadata" id="navbox-Particelle"><tbody><tr><th colspan="3"><div class="navbox_navbar"><div class="noprint plainlinks" style="background-color:transparent; padding:0; font-size:xx-small; color:var(--color-base, #000000); white-space:nowrap;"><a href="/wiki/Template:Particelle" title="Template:Particelle"><span title="Vai alla pagina del template">V</span></a> · <a href="/wiki/Discussioni_template:Particelle" title="Discussioni template:Particelle"><span title="Discuti del template">D</span></a> · <a class="external text" href="https://it.wikipedia.org/w/index.php?title=Template:Particelle&action=edit"><span title="Modifica il template. Usa l'anteprima prima di salvare">M</span></a></div></div><span class="navbox_title"><a href="/wiki/Particella_subatomica" title="Particella subatomica">Particelle in fisica</a></span></th></tr><tr><th colspan="1" class="navbox_group" style="width:5em;font-weight:normal; width:10%"><b><a href="/wiki/Particella_elementare" title="Particella elementare">Elementari</a></b></th><td colspan="1" class="navbox_list navbox_odd" style="background:transparent"><table class="subnavbox"><tbody><tr><th class="subnavbox_group" style="width:5em;font-weight:normal; width:9%;background:#e6e6ff"><b><a href="/wiki/Fermione" title="Fermione">Fermioni</a></b></th><td colspan="1"><table class="subnavbox"><tbody><tr><th class="subnavbox_group" style="width:5em;font-weight:normal; width:12%;background:#e6e6ff"><a href="/wiki/Quark_(particella)" title="Quark (particella)">Quark</a></th><td colspan="1"><a href="/wiki/Quark_up" title="Quark up">Up</a><b> ·</b> <a href="/wiki/Quark_down" title="Quark down">Down</a><b> ·</b> <a href="/wiki/Quark_charm" title="Quark charm">Charm</a><b> ·</b> <a href="/wiki/Quark_strange" title="Quark strange">Strange</a><b> ·</b> <a href="/wiki/Quark_top" title="Quark top">Top</a><b> ·</b> <a href="/wiki/Quark_bottom" title="Quark bottom">Bottom</a></td></tr><tr><th class="subnavbox_group" style="width:5em;font-weight:normal; width:12%;background:#e6e6ff"><a href="/wiki/Leptone" title="Leptone">Leptoni</a></th><td colspan="1"><a href="/wiki/Elettrone" title="Elettrone">Elettrone</a><b> ·</b> <a href="/wiki/Positrone" title="Positrone">Positrone</a><b> ·</b> <a href="/wiki/Muone" title="Muone">Muone</a><b> ·</b> <a href="/wiki/Antimuone" class="mw-redirect" title="Antimuone">Antimuone</a><b> ·</b> <a href="/wiki/Tauone" title="Tauone">Tauone</a><b> ·</b> <a href="/wiki/Antitauone" class="mw-redirect" title="Antitauone">Antitauone</a><b> ·</b> <a href="/wiki/Neutrino_elettronico" title="Neutrino elettronico">Neutrino elettronico</a><b> ·</b> <a href="/wiki/Antineutrino_elettronico" class="mw-redirect" title="Antineutrino elettronico">Antineutrino elettronico</a><b> ·</b> <a href="/wiki/Neutrino_muonico" title="Neutrino muonico">Neutrino muonico</a><b> ·</b> <a href="/wiki/Antineutrino_muonico" class="mw-redirect" title="Antineutrino muonico">Antineutrino muonico</a><b> ·</b> <a href="/wiki/Neutrino_tauonico" title="Neutrino tauonico">Neutrino tauonico</a><b> ·</b> <a href="/wiki/Antineutrino_tauonico" class="mw-redirect" title="Antineutrino tauonico">Antineutrino tauonico</a></td></tr></tbody></table></td></tr><tr><th class="subnavbox_group" style="width:5em;font-weight:normal; width:9%;background:#e6e6ff"><b><a href="/wiki/Bosone_(fisica)" title="Bosone (fisica)">Bosoni</a></b></th><td colspan="1"><table class="subnavbox"><tbody><tr><th class="subnavbox_group" style="width:5em;font-weight:normal;width:12%;background:#e6e6ff"><a href="/wiki/Bosone_di_gauge" title="Bosone di gauge">Gauge</a></th><td colspan="1"><a href="/wiki/Fotone" title="Fotone">Fotone</a><b> ·</b> <a href="/wiki/Gluone" title="Gluone">Gluone</a><b> ·</b> <a href="/wiki/Bosoni_W_e_Z" title="Bosoni W e Z">Bosoni W e Z</a></td></tr><tr><th class="subnavbox_group" style="width:5em;font-weight:normal;width:12%;background:#e6e6ff"><a href="/wiki/Bosone_scalare" title="Bosone scalare">Scalari</a></th><td colspan="1"><a href="/wiki/Bosone_di_Higgs" title="Bosone di Higgs">Bosone di Higgs</a></td></tr></tbody></table></td></tr><tr><th class="subnavbox_group" style="width:5em;font-weight:normal; width:9%;background:#e6e6ff"><a href="/wiki/Lista_delle_particelle" class="mw-redirect" title="Lista delle particelle">Ipotetiche</a></th><td colspan="1"><table class="subnavbox"><tbody><tr><th class="subnavbox_group" style="font-weight:normal;width:12%;background:#e6e6ff"><a href="/wiki/Sparticella" title="Sparticella">Sparticelle</a></th><td colspan="1"><table class="subnavbox"><tbody><tr><th class="subnavbox_group" style="font-weight:normal;width:8%;background:#e6e6ff"><a href="/wiki/Gaugino" title="Gaugino">Gaugini</a></th><td colspan="1"><a href="/wiki/Gluino" class="mw-redirect" title="Gluino">Gluino</a><b> ·</b> <a href="/wiki/Gravitino" class="mw-redirect" title="Gravitino">Gravitino</a><b> ·</b> <a href="/wiki/Fotino" class="mw-redirect" title="Fotino">Fotino</a></td></tr><tr><th class="subnavbox_group" style="font-weight:normal;width:8%;background:#e6e6ff">Altre</th><td colspan="1"><a href="/wiki/Axino" title="Axino">Axino</a><b> ·</b> <a href="/wiki/Chargino" title="Chargino">Chargino</a><b> ·</b> <a href="/wiki/Higgsino" class="mw-redirect" title="Higgsino">Higgsino</a><b> ·</b> <a href="/wiki/Neutralino" title="Neutralino">Neutralino</a><b> ·</b> <a href="/wiki/Sfermione" title="Sfermione">Sfermione</a><b> ·</b> <a href="/wiki/Bosino_(particella)" title="Bosino (particella)">Bosino</a></td></tr></tbody></table></td></tr><tr><th class="subnavbox_group" style="font-weight:normal;width:12%;background:#e6e6ff">Altre</th><td colspan="1"><a href="/wiki/Assione" title="Assione">Assione</a><b> ·</b> <a href="/wiki/Dilatone" title="Dilatone">Dilatone</a><b> ·</b> <a href="/wiki/Gravitone" title="Gravitone">Gravitone</a><b> ·</b> <a href="/wiki/Monopolo_magnetico" title="Monopolo magnetico">Monopolo magnetico</a><b> ·</b> <a href="/wiki/Majorone" title="Majorone">Majorone</a><b> ·</b> <a href="/wiki/Tachione" title="Tachione">Tachione</a><b> ·</b> <a href="/wiki/Bosoni_X_e_Y" title="Bosoni X e Y">Bosoni X e Y</a><b> ·</b> <a href="/wiki/Bosoni_W%27_e_Z%27" title="Bosoni W' e Z'">bosoni W' e Z'</a><b> ·</b> <a href="/wiki/Neutrino_sterile" title="Neutrino sterile">Neutrino sterile</a><b> ·</b> <a href="/wiki/Preone_(fisica)" title="Preone (fisica)">Preone</a><b> ·</b> <a href="/wiki/Fermione_di_Majorana" title="Fermione di Majorana">Fermione di Majorana</a></td></tr></tbody></table></td></tr><tr><th class="subnavbox_group" style="width:5em;font-weight:normal; width:9%;background:#e6e6ff"><b>Altre</b></th><td colspan="1"><a href="/wiki/Ghost_di_Faddeev-Popov" title="Ghost di Faddeev-Popov">Ghost di Faddeev-Popov</a></td></tr></tbody></table></td><td rowspan="3" class="navbox_image"><span typeof="mw:File"><a href="/wiki/File:Modello_Standard_delle_Particelle_Elementari.svg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/4/40/Modello_Standard_delle_Particelle_Elementari.svg/400px-Modello_Standard_delle_Particelle_Elementari.svg.png" decoding="async" width="400" height="383" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/4/40/Modello_Standard_delle_Particelle_Elementari.svg/600px-Modello_Standard_delle_Particelle_Elementari.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/4/40/Modello_Standard_delle_Particelle_Elementari.svg/800px-Modello_Standard_delle_Particelle_Elementari.svg.png 2x" data-file-width="1390" data-file-height="1330" /></a></span></td></tr><tr><th colspan="1" class="navbox_group" style="width:5em;font-weight:normal; width:10%"><b><a href="/wiki/Stato_legato" class="mw-redirect" title="Stato legato">Composte</a></b></th><td colspan="1" class="navbox_list navbox_even" style="background:transparent"><table class="subnavbox"><tbody><tr><th class="subnavbox_group" style="width:5em;font-weight:normal; width:9%;background:#e6e6ff"><b><a href="/wiki/Adrone" title="Adrone">Adroni</a></b></th><td colspan="1"><table class="subnavbox"><tbody><tr><th class="subnavbox_group" style="width:5em;font-weight:normal; width:12%;background:#e6e6ff"><a href="/wiki/Barione" title="Barione">Barioni</a>/ <a href="/wiki/Iperone_(fisica)" title="Iperone (fisica)">iperoni</a></th><td colspan="1"><a href="/wiki/Nucleone" title="Nucleone">Nucleone</a> (<a href="/wiki/Protone" title="Protone">Protone</a><b> ·</b> <a class="mw-selflink selflink">Neutrone</a>)<b> ·</b> <a href="/wiki/Barione_delta" title="Barione delta">Barione delta</a><b> ·</b> <a href="/wiki/Barione_lambda" title="Barione lambda">Barione lambda</a><b> ·</b> <a href="/wiki/Barione_sigma" title="Barione sigma">Barione sigma</a><b> ·</b> <a href="/wiki/Barione_Xi" title="Barione Xi">Barione Xi</a><b> ·</b> <a href="/wiki/Barione_omega" title="Barione omega">Barione omega</a></td></tr><tr><th class="subnavbox_group" style="width:5em;font-weight:normal; width:12%;background:#e6e6ff"><a href="/wiki/Mesone" title="Mesone">Mesoni</a>/ <a href="/wiki/Quarkonio" title="Quarkonio">quarkoni</a></th><td colspan="1"><a href="/wiki/Pione" title="Pione">Pione</a><b> ·</b> <a href="/wiki/Mesone_rho" title="Mesone rho">Mesone rho</a><b> ·</b> <a href="/wiki/Mesone_eta" title="Mesone eta">Mesoni eta e eta primo</a><b> ·</b> <a href="/wiki/Mesone_phi" title="Mesone phi">Mesone phi</a><b> ·</b> <a href="/wiki/Mesone_omega" title="Mesone omega">Mesone omega</a><b> ·</b> <a href="/wiki/Mesone_J/Psi" title="Mesone J/Psi">Mesone J/Psi</a><b> ·</b> <a href="/wiki/Mesone_upsilon" title="Mesone upsilon">Mesone upsilon</a><b> ·</b> <a href="/wiki/Kaone" title="Kaone">Kaone</a><b> ·</b> <a href="/wiki/Mesone_B" title="Mesone B">Mesone B</a><b> ·</b> <a href="/wiki/Mesone_D" title="Mesone D">Mesone D</a></td></tr><tr><th class="subnavbox_group" style="width:5em;font-weight:normal; width:12%;background:#e6e6ff"><a href="/wiki/Adrone_esotico" title="Adrone esotico">Adroni esotici</a></th><td colspan="1"><a href="/wiki/Tetraquark" title="Tetraquark">Tetraquark</a><b> ·</b> <a href="/wiki/Pentaquark" title="Pentaquark">Pentaquark</a></td></tr></tbody></table></td></tr><tr><th class="subnavbox_group" style="width:5em;font-weight:normal; width:9%;background:#e6e6ff"><a href="/wiki/Categoria:Particelle_composte_ipotetiche" title="Categoria:Particelle composte ipotetiche">Ipotetiche</a></th><td colspan="1"><table class="subnavbox"><tbody><tr><th class="subnavbox_group" style="font-weight:normal; width:12%;background:#e6e6ff"><a href="/wiki/Barione_esotico" title="Barione esotico">Barioni esotici</a></th><td colspan="1"><a href="/wiki/Esaquark" title="Esaquark">Esaquark</a></td></tr><tr><th class="subnavbox_group" style="font-weight:normal; width:12%;background:#e6e6ff"><a href="/wiki/Mesone_esotico" title="Mesone esotico">Mesoni esotici</a></th><td colspan="1"><a href="/wiki/Glueball" title="Glueball">Glueball</a> (<a href="/w/index.php?title=Odderone&action=edit&redlink=1" class="new" title="Odderone (la pagina non esiste)">Odderone</a>)<b> ·</b> <a href="/wiki/Mesone_theta" title="Mesone theta">Mesone theta</a><b> ·</b> <a href="/wiki/Mesone_T" title="Mesone T">Mesone T</a></td></tr><tr><th class="subnavbox_group" style="font-weight:normal; width:12%;background:#e6e6ff">Altre</th><td colspan="1"><a href="/wiki/Molecola_mesonica" title="Molecola mesonica">Molecola mesonica</a><b> ·</b> <a href="/wiki/Pomerone" title="Pomerone">Pomerone</a></td></tr></tbody></table></td></tr><tr><th class="subnavbox_group" style="width:5em;font-weight:normal; width:9%;background:#e6e6ff"><b>Altre</b></th><td colspan="1"><a href="/wiki/Nucleo_atomico" title="Nucleo atomico">Nuclei atomici</a><b> ·</b> <a href="/wiki/Atomo" title="Atomo">Atomi</a><b> ·</b> <a href="/wiki/Atomo_esotico" title="Atomo esotico">Atomi esotici</a> (<a href="/wiki/Positronio" title="Positronio">Positronio</a><b> ·</b> <a href="/wiki/Muonio_(fisica)" title="Muonio (fisica)">Muonio</a><b> ·</b> <a href="/wiki/Tauonio" class="mw-redirect" title="Tauonio">Tauonio</a><b> ·</b> <a href="/wiki/Pionio" title="Pionio">Pionio</a>)<b> ·</b> <a href="/wiki/Atomolecola" title="Atomolecola">Atomolecole</a><b> ·</b> <a href="/wiki/Molecola" title="Molecola">Molecole</a><b> ·</b> <a href="/wiki/Superatomo" title="Superatomo">Superatomo</a></td></tr></tbody></table></td></tr><tr><th colspan="1" class="navbox_group" style="width:5em;font-weight:normal; width:10%"><b><a href="/wiki/Quasiparticella" title="Quasiparticella">Quasiparticelle</a></b></th><td colspan="1" class="navbox_list navbox_odd" style="background:transparent"><a href="/wiki/Droplettone" title="Droplettone">Droplettone</a><b> ·</b> <a href="/wiki/Eccitone" title="Eccitone">Eccitone</a><b> ·</b> <a href="/wiki/Fasone" title="Fasone">Fasone</a><b> ·</b> <a href="/w/index.php?title=Frattone_(particella)&action=edit&redlink=1" class="new" title="Frattone (particella) (la pagina non esiste)">Frattone</a><b> ·</b> <a href="/wiki/Fonone" title="Fonone">Fonone</a><b> ·</b> <a href="/wiki/Lacuna_(fisica)" title="Lacuna (fisica)">Lacuna</a><b> ·</b> <a href="/wiki/Levitone" title="Levitone">Levitone</a><b> ·</b> <a href="/wiki/Magnone_(fisica)" title="Magnone (fisica)">Magnone</a><b> ·</b> <a href="/w/index.php?title=Plasmarone&action=edit&redlink=1" class="new" title="Plasmarone (la pagina non esiste)">Plasmarone</a><b> ·</b> <a href="/wiki/Plasmone" title="Plasmone">Plasmone</a><b> ·</b> <a href="/wiki/Polaritone" title="Polaritone">Polaritone</a><b> ·</b> <a href="/wiki/Polarone" title="Polarone">Polarone</a><b> ·</b> <a href="/wiki/Qualunquone" title="Qualunquone">Qualunquone</a><b> ·</b> <a href="/wiki/Rotone" title="Rotone">Rotone</a><b> ·</b> <a href="/wiki/Skyrmione" title="Skyrmione">Skyrmione</a><b> ·</b> <a href="/wiki/Skyrmione_magnetico" title="Skyrmione magnetico">Skyrmione magnetico</a><b> ·</b> <a href="/wiki/Solitone" title="Solitone">Solitone</a><b> ·</b> <a href="/wiki/Solitone_di_Davydov" title="Solitone di Davydov">Solitone di Davydov</a><b> ·</b> <a href="/wiki/Spinone_(fisica)" title="Spinone (fisica)">Spinone</a><b> ·</b> <a href="/wiki/Topolaritone" title="Topolaritone">Topolaritone</a></td></tr><tr><th colspan="3" class="navbox_abovebelow"><a href="/wiki/Cronologia_della_scoperta_delle_particelle" title="Cronologia della scoperta delle particelle">Cronologia della scoperta delle particelle</a></th></tr></tbody></table> <style data-mw-deduplicate="TemplateStyles:r140554510">.mw-parser-output .CdA{border:1px solid #aaa;width:100%;margin:auto;font-size:90%;padding:2px}.mw-parser-output .CdA th{background-color:#f2f2f2;font-weight:bold;width:20%}@media screen{html.skin-theme-clientpref-night .mw-parser-output .CdA{border-color:#54595D}html.skin-theme-clientpref-night .mw-parser-output .CdA th{background-color:#202122}}@media screen and (prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .CdA{border-color:#54595D}html.skin-theme-clientpref-os .mw-parser-output .CdA th{background-color:#202122}}</style><table class="CdA"><tbody><tr><th><a href="/wiki/Aiuto:Controllo_di_autorit%C3%A0" title="Aiuto:Controllo di autorità">Controllo di autorità</a></th><td><a href="/wiki/Nuovo_soggettario" title="Nuovo soggettario">Thesaurus BNCF</a> <span class="uid"><a rel="nofollow" class="external text" href="https://thes.bncf.firenze.sbn.it/termine.php?id=20957">20957</a></span><span style="font-weight:bold;"> ·</span> <a href="/wiki/Library_of_Congress_Control_Number" title="Library of Congress Control Number">LCCN</a> <span class="uid">(<span style="font-weight:bolder; font-size:80%"><abbr title="inglese">EN</abbr></span>) <a rel="nofollow" class="external text" href="http://id.loc.gov/authorities/subjects/sh85091222">sh85091222</a></span><span style="font-weight:bold;"> ·</span> <a href="/wiki/Gemeinsame_Normdatei" title="Gemeinsame Normdatei">GND</a> <span class="uid">(<span style="font-weight:bolder; font-size:80%"><abbr title="tedesco">DE</abbr></span>) <a rel="nofollow" class="external text" href="https://d-nb.info/gnd/4041964-2">4041964-2</a></span><span style="font-weight:bold;"> ·</span> <a href="/wiki/Biblioteca_nazionale_di_Francia" title="Biblioteca nazionale di Francia">BNF</a> <span class="uid">(<span style="font-weight:bolder; font-size:80%"><abbr title="francese">FR</abbr></span>) <a rel="nofollow" class="external text" href="https://catalogue.bnf.fr/ark:/12148/cb11944505r">cb11944505r</a> <a rel="nofollow" class="external text" href="https://data.bnf.fr/ark:/12148/cb11944505r">(data)</a></span><span style="font-weight:bold;"> ·</span> <a href="/wiki/Biblioteca_nazionale_di_Israele" title="Biblioteca nazionale di Israele">J9U</a> <span class="uid">(<span style="font-weight:bolder; font-size:80%"><abbr title="inglese">EN</abbr>, <abbr title="ebraico">HE</abbr></span>) <a rel="nofollow" class="external text" href="http://olduli.nli.org.il/F/?func=find-b&local_base=NLX10&find_code=UID&request=987007565613105171">987007565613105171</a></span><span style="font-weight:bold;"> ·</span> <a href="/wiki/Biblioteca_della_Dieta_nazionale_del_Giappone" title="Biblioteca della Dieta nazionale del Giappone">NDL</a> <span class="uid">(<span style="font-weight:bolder; font-size:80%"><abbr title="inglese">EN</abbr>, <abbr title="giapponese">JA</abbr></span>) <a rel="nofollow" class="external text" href="https://id.ndl.go.jp/auth/ndlna/00573932">00573932</a></span></td></tr></tbody></table> <div class="noprint" style="width:100%; padding: 3px 0; display: flex; flex-wrap: wrap; row-gap: 4px; column-gap: 8px; box-sizing: border-box;"><div style="flex-basis: calc( 100% / 2 - 8px / 2 );"><style data-mw-deduplicate="TemplateStyles:r140555418">.mw-parser-output .itwiki-template-occhiello{width:100%;line-height:25px;border:1px solid #CCF;background-color:#F0EEFF;box-sizing:border-box}.mw-parser-output .itwiki-template-occhiello-progetto{background-color:#FAFAFA}@media screen{html.skin-theme-clientpref-night .mw-parser-output .itwiki-template-occhiello{background-color:#202122;border-color:#54595D}html.skin-theme-clientpref-night .mw-parser-output .itwiki-template-occhiello-progetto{background-color:#282929}}@media screen and (prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .itwiki-template-occhiello{background-color:#202122;border-color:#54595D}html.skin-theme-clientpref-os .mw-parser-output .itwiki-template-occhiello-progetto{background-color:#282929}}</style><div class="itwiki-template-occhiello"><span class="noviewer" typeof="mw:File"><a href="/wiki/File:Stylised_atom_with_three_Bohr_model_orbits_and_stylised_nucleus.png" class="mw-file-description" title="Energia nucleare"><img alt=" " src="//upload.wikimedia.org/wikipedia/commons/thumb/1/1f/Stylised_atom_with_three_Bohr_model_orbits_and_stylised_nucleus.png/22px-Stylised_atom_with_three_Bohr_model_orbits_and_stylised_nucleus.png" decoding="async" width="22" height="25" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/1/1f/Stylised_atom_with_three_Bohr_model_orbits_and_stylised_nucleus.png/33px-Stylised_atom_with_three_Bohr_model_orbits_and_stylised_nucleus.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/1/1f/Stylised_atom_with_three_Bohr_model_orbits_and_stylised_nucleus.png/44px-Stylised_atom_with_three_Bohr_model_orbits_and_stylised_nucleus.png 2x" data-file-width="260" data-file-height="296" /></a></span> <b><a href="/wiki/Portale:Energia_nucleare" title="Portale:Energia nucleare">Portale Energia nucleare</a></b></div></div><div style="flex-basis: calc( 100% / 2 - 8px / 2 );"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r140555418"><div class="itwiki-template-occhiello"><span class="noviewer" typeof="mw:File"><a href="/wiki/File:P_physics.svg" class="mw-file-description" title="Quantistica"><img alt=" " src="//upload.wikimedia.org/wikipedia/commons/thumb/b/b4/P_physics.svg/25px-P_physics.svg.png" decoding="async" width="25" height="23" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/b/b4/P_physics.svg/38px-P_physics.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/b/b4/P_physics.svg/50px-P_physics.svg.png 2x" data-file-width="400" data-file-height="360" /></a></span> <b><a href="/wiki/Portale:Quantistica" title="Portale:Quantistica">Portale Quantistica</a></b></div></div></div>    </div><noscript><img src="https://login.wikimedia.org/wiki/Special:CentralAutoLogin/start?type=1x1" alt="" width="1" height="1" style="border: none; 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