Further evidence for shape coexistence in $^{79}$Zn$^{m}$ near doubly-magic $^{78}$Ni

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">     <html xmlns="http://www.w3.org/1999/xhtml" lang="en" xml:lang="en" xmlns:og="http://ogp.me/ns#" xmlns:fb="http://ogp.me/ns/fb#"> <head> <title>Further evidence for shape coexistence in $^{79}$Zn$^{m}$ near doubly-magic $^{78}$Ni - CERN Document Server</title> <link href='https://framework.web.cern.ch/framework/2.0/fonts/PTSansWeb/PTSansWeb.css' rel='stylesheet' type='text/css' /> <link rel="stylesheet" href="https://cds.cern.ch/img/invenio.css?v=20141127" type="text/css" /> <link rel="stylesheet" href="https://cds.cern.ch/img/cern_theme/css/cern_theme.css?v=20141127" type="text/css" /> <link rel="stylesheet"href="/css/font-awesome.min.css"> <meta http-equiv="X-UA-Compatible" content="IE=Edge"/> <link rel="stylesheet" href="https://cds.cern.ch/img/cern_toolbar/css/toolbar.css" type="text/css" />    <link rel="canonical" href="https://cds.cern.ch/record/2880052" /> <link rel="alternate" hreflang="el" href="https://cds.cern.ch/record/2880052?ln=el" /> <link rel="alternate" hreflang="fr" href="https://cds.cern.ch/record/2880052?ln=fr" /> <link rel="alternate" hreflang="bg" href="https://cds.cern.ch/record/2880052?ln=bg" /> <link rel="alternate" hreflang="zh-TW" href="https://cds.cern.ch/record/2880052?ln=zh_TW" /> <link rel="alternate" hreflang="pt" href="https://cds.cern.ch/record/2880052?ln=pt" /> <link rel="alternate" hreflang="no" href="https://cds.cern.ch/record/2880052?ln=no" /> <link rel="alternate" hreflang="hr" href="https://cds.cern.ch/record/2880052?ln=hr" /> <link rel="alternate" hreflang="ca" href="https://cds.cern.ch/record/2880052?ln=ca" /> <link rel="alternate" hreflang="de" href="https://cds.cern.ch/record/2880052?ln=de" /> <link rel="alternate" hreflang="it" href="https://cds.cern.ch/record/2880052?ln=it" /> <link rel="alternate" hreflang="zh-CN" href="https://cds.cern.ch/record/2880052?ln=zh_CN" /> <link rel="alternate" hreflang="sv" href="https://cds.cern.ch/record/2880052?ln=sv" /> <link rel="alternate" hreflang="sk" href="https://cds.cern.ch/record/2880052?ln=sk" /> <link rel="alternate" hreflang="en" href="https://cds.cern.ch/record/2880052?ln=en" /> <link rel="alternate" hreflang="pl" href="https://cds.cern.ch/record/2880052?ln=pl" /> <link rel="alternate" hreflang="ru" href="https://cds.cern.ch/record/2880052?ln=ru" /> <link rel="alternate" hreflang="ka" href="https://cds.cern.ch/record/2880052?ln=ka" /> <link rel="alternate" hreflang="ja" href="https://cds.cern.ch/record/2880052?ln=ja" /> <link rel="alternate" hreflang="es" href="https://cds.cern.ch/record/2880052?ln=es" /> <link rel="alternate" type="application/rss+xml" title="CERN Document Server RSS" href="/rss?ln=en" /> <link rel="search" type="application/opensearchdescription+xml" href="https://cds.cern.ch/opensearchdescription" title="CERN Document Server" /> <link rel="unapi-server" type="application/xml" title="unAPI" href="https://cds.cern.ch/unapi" /> <link rel="apple-touch-icon" href="/apple-touch-icon.png"/> <link rel="apple-touch-icon-precomposed" href="/apple-touch-icon-precomposed.png"/> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <meta http-equiv="Content-Language" content="en" /> <meta name="description" content="Isomers close to doubly magic <math display="inline"><mrow><mmultiscripts><mrow><msub><mrow><mi>Ni</mi></mrow><mrow><mn>50</mn></mrow></msub></mrow><mprescripts/><mrow><mn>28</mn></mrow><mrow><mn>78</mn></mrow></mmultiscripts></mrow></math> provide essential information on the shell evolution and shape coexistence near the <math display="inline"><mi>Z</mi><mo>=</mo><mn>28</mn></math> and <math display="inline"><mi>N</mi><mo>=</mo><mn>50</mn></math> double shell closure. We report the excitation energy measurement of the <math display="inline"><mrow><mn>1</mn><mo>/</mo><msup><mrow><mn>2</mn></mrow><mrow><mo>+</mo></mrow></msup></mrow></math> isomer in <math display="inline"><mrow><mmultiscripts><mrow><msub><mrow><mi>Zn</mi></mrow><mrow><mn>49</mn></mrow></msub></mrow><mprescripts/><mrow><mn>30</mn></mrow><mrow><mn>79</mn></mrow></mmultiscripts></mrow></math> through independent high-precision mass measurements with the JYFLTRAP double Penning trap and with the ISOLTRAP multi-reflection time-of-flight mass spectrometer. We unambiguously place the <math display="inline"><mn>1</mn><mo>/</mo><msup><mn>2</mn><mo>+</mo></msup></math> isomer at 942(10) keV, slightly below the <math display="inline"><mn>5</mn><mo>/</mo><msup><mn>2</mn><mo>+</mo></msup></math> state at 983(3) keV. With the use of state-of-the-art shell-model diagonalizations, complemented with discrete nonorthogonal shell-model calculations which are used here for the first time to interpret shape coexistence, we find low-lying deformed intruder states, similar to other <math display="inline"><mi>N</mi><mo>=</mo><mn>49</mn></math> isotones. The <math display="inline"><mn>1</mn><mo>/</mo><msup><mn>2</mn><mo>+</mo></msup></math> isomer is interpreted as the bandhead of a low-lying deformed structure akin to a predicted low-lying deformed band in <math display="inline"><mrow><mmultiscripts><mrow><mi>Zn</mi></mrow><mprescripts/><none/><mrow><mn>80</mn></mrow></mmultiscripts></mrow></math>, and points to shape coexistence in <math display="inline"><mrow><mmultiscripts><mrow><mi>Zn</mi></mrow><mprescripts/><none/><mrow><mn>79</mn><mo>,</mo><mn>80</mn></mrow></mmultiscripts></mrow></math> similar to the one observed in <math display="inline"><mrow><mmultiscripts><mrow><mi>Ni</mi></mrow><mprescripts/><none/><mrow><mn>78</mn></mrow></mmultiscripts></mrow></math>. The results make a strong case for confirming the claim of shape coexistence in this key region of the nuclear chart. Isomers close to doubly-magic $^{78}_{28}$Ni$_{50}$ provide essential information on the shell evolution and shape coexistence near the ${Z=28}$ and ${N=50}$ double shell closure. We report the excitation energy measurement of the $1/2^{+}$ isomer in $^{79}_{30}$Zn$_{49}$ through independent high-precision mass measurements with the JYFLTRAP double Penning trap and with the ISOLTRAP Multi-Reflection Time-of-Flight Mass Spectrometer. We unambiguously place the $1/2^{+}$ isomer at 942(10) keV, slightly below the $5/2^+$ state at 983(3) keV. With the use of state-of-the-art shell-model diagonalizations, complemented with Discrete Non Orthogonal shell-model calculations which are used here the first time to interpret shape coexistence, we find low-lying deformed intruder states, similar to other ${N=49}$ isotones. The $1/2^{+}$ isomer is interpreted as the band-head of a low-lying deformed structure akin to a predicted low-lying deformed band in $^{80}$Zn, and points to shape coexistence in $^{79,80}$Zn similar to the one observed in $^{78}$Ni. The results make a strong case for confirming the claim of shape coexistence in this key region of the nuclear chart. Nies, L.; Canete, L.; Dao, D.D.; Giraud, S.; Kankainen, A.; Lunney, D.; Nowacki, F.; Bastin, B.; Stryjczyk, M.; Ascher, P.; Blaum, K.; Cakirli, R.B.; Eronen, T.; Fischer, P.; Flayol, M.; Girard Alcindor, V.; Herlert, A.; Jokinen, A.; Khanam, A.; Köster, U.; Lange, D.; Moore, I.D.; Müller, M.; Mougeot, M.; Nesterenko, D.A.; Penttilä, H.; Petrone, C.; Pohjalainen, I.; de Roubin, A.; Rubchenya, V.; Schweiger, Ch.; Schweikhard, L.; Vilen, M.; Äystö, J." /> <meta name="keywords" content="CERN Document Server, WebSearch, CERN Document Server" /> <script type="text/javascript" src="https://cds.cern.ch/js/jquery.min.js"></script>  <link rel="stylesheet" href="https://cds.cern.ch/img/webnews.css" type="text/css" />  <script type="text/javascript" src="https://cds.cern.ch/js/webnews.js?v=20131009"></script> <meta property="fb:app_id" content="137353533001720"/> <script type="text/x-mathjax-config"> MathJax.Hub.Config({ tex2jax: {inlineMath: [['$','$']], processEscapes: true}, showProcessingMessages: false, messageStyle: "none" }); </script> <script src="/MathJax/MathJax.js?config=TeX-AMS_CHTML" type="text/javascript"> </script>  <meta content="arXiv : Further evidence for shape coexistence in $^{79}$Zn$^{m}$ near doubly-magic $^{78}$Ni" name="citation_title" /> <meta content="Nies, L." name="citation_author" /> <meta content="Canete, L." name="citation_author" /> <meta content="Kankainen, A." name="citation_author" /> <meta content="Schweikhard, L." name="citation_author" /> <meta content="Mougeot, M." name="citation_author" /> <meta content="Bastin, B." name="citation_author" /> <meta content="Fischer, P." name="citation_author" /> <meta content="Rubchenya, V." name="citation_author" /> <meta content="Lange, D." name="citation_author" /> <meta content="Blaum, K." name="citation_author" /> <meta content="Nesterenko, D.A." name="citation_author" /> <meta content="Pohjalainen, I." name="citation_author" /> <meta content="Schweiger, Ch." name="citation_author" /> <meta content="Äystö, J." name="citation_author" /> <meta content="Giraud, S." name="citation_author" /> <meta content="Nowacki, F." name="citation_author" /> <meta content="Dao, D.D." name="citation_author" /> <meta content="Ascher, P." name="citation_author" /> <meta content="Flayol, M." name="citation_author" /> <meta content="Penttilä, H." name="citation_author" /> <meta content="Cakirli, R.B." name="citation_author" /> <meta content="Eronen, T." name="citation_author" /> <meta content="Petrone, C." name="citation_author" /> <meta content="Vilen, M." name="citation_author" /> <meta content="Moore, I.D." name="citation_author" /> <meta content="Stryjczyk, M." name="citation_author" /> <meta content="Köster, U." name="citation_author" /> <meta content="Khanam, A." name="citation_author" /> <meta content="Girard Alcindor, V." name="citation_author" /> <meta content="Lunney, D." name="citation_author" /> <meta content="Müller, M." name="citation_author" /> <meta content="Herlert, A." name="citation_author" /> <meta content="Jokinen, A." name="citation_author" /> <meta content="de Roubin, A." name="citation_author" /> <meta content="10.1103/PhysRevLett.131.222503" name="citation_doi" /> <meta content="Phys. 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We report the excitation energy measurement of the $1/2^{+}$ isomer in $^{79}_{30}$Zn$_{49}$ through independent high-precision mass measurements with the JYFLTRAP double Penning trap and with the ISOLTRAP Multi-Reflection Time-of-Flight Mass Spectrometer. We unambiguously place the $1/2^{+}$ isomer at 942(10) keV, slightly below the $5/2^+$ state at 983(3) keV. With the use of state-of-the-art shell-model diagonalizations, complemented with Discrete Non Orthogonal shell-model calculations which are used here the first time to interpret shape coexistence, we find low-lying deformed intruder states, similar to other ${N=49}$ isotones. The $1/2^{+}$ isomer is interpreted as the band-head of a low-lying deformed structure akin to a predicted low-lying deformed band in $^{80}$Zn, and points to shape coexistence in $^{79,80}$Zn similar to the one observed in $^{78}$Ni. The results make a strong case for confirming the claim of shape coexistence in this key region of the nuclear chart." property="og:description" /> <meta content="APS" property="og:description" /> <meta content="arXiv" property="og:description" /> <meta content="Isomers close to doubly magic Ni502878 provide essential information on the shell evolution and shape coexistence near the Z=28 and N=50 double shell closure. We report the excitation energy measurement of the 1/2+ isomer in Zn493079 through independent high-precision mass measurements with the JYFLTRAP double Penning trap and with the ISOLTRAP multi-reflection time-of-flight mass spectrometer. We unambiguously place the 1/2+ isomer at 942(10) keV, slightly below the 5/2+ state at 983(3) keV. With the use of state-of-the-art shell-model diagonalizations, complemented with discrete nonorthogonal shell-model calculations which are used here for the first time to interpret shape coexistence, we find low-lying deformed intruder states, similar to other N=49 isotones. The 1/2+ isomer is interpreted as the bandhead of a low-lying deformed structure akin to a predicted low-lying deformed band in Zn80, and points to shape coexistence in Zn79,80 similar to the one observed in Ni78. The results make a strong case for confirming the claim of shape coexistence in this key region of the nuclear chart." property="og:description" />  <meta content="summary" name="twitter:card" /> <style></style> </head> <body class="CERN32Document32Server search" lang="en">  <div id="cern-toolbar"> <h1><a href="http://cern.ch" title="CERN">CERN <span>Accelerating science</span></a></h1> <ul> <li class="cern-accountlinks"><a class="cern-account" href="https://cds.cern.ch/youraccount/login?ln=en&referer=https%3A//cds.cern.ch/record/2880052%3Fln%3Den" title="Sign in to your CERN account">Sign in</a></li> <li><a class="cern-directory" href="http://cern.ch/directory" title="Search CERN resources and browse the directory">Directory</a></li> </ul> </div>   <div role="banner" class="clearfix" id="header"> <div class="header-inner inner"> <hgroup class="clearfix"> <h2 id="site-name"> <a rel="home" title="Home" href="/"><span>CERN Document Server</span></a> </h2> <h3 id="site-slogan">Access articles, reports and multimedia content in HEP</h3> </hgroup> <div role="navigation" id="main-navigation" class="cdsmenu"> <h2 class="element-invisible">Main menu</h2><ul class="links inline clearfix"> <li class="menu-386 first active-trail"><a class="active-trail" href="https://cds.cern.ch/?ln=en">Search</a></li> <li class="menu-444 "><a class="" title="" href="https://cds.cern.ch/submit?ln=en">Submit</a></li> <li class="menu-426 "><a class="" href="https://cds.cern.ch/help/?ln=en">Help</a></li> <li class="leaf hassubcdsmenu"> <a hreflang="en" class="header" href="https://cds.cern.ch/youraccount/display?ln=en">Personalize</a> <ul class="subsubcdsmenu"><li><a href="https://cds.cern.ch/youralerts/list?ln=en">Your alerts</a></li><li><a href="https://cds.cern.ch/yourbaskets/display?ln=en">Your baskets</a></li><li><a href="https://cds.cern.ch/yourcomments?ln=en">Your comments</a></li><li><a href="https://cds.cern.ch/youralerts/display?ln=en">Your searches</a></li></ul></li> </ul> </div> </div> </div>  <table class="navtrailbox"> <tr> <td class="navtrailboxbody"> <a href="/?ln=en" class="navtrail">Home</a> > Further evidence for shape coexistence in $^{79}$Zn$^{m}$ near doubly-magic $^{78}$Ni </td> </tr> </table> </div> <div class="pagebody"><div class="pagebodystripemiddle"> <div class="detailedrecordbox"> <div class="detailedrecordtabs"> <div> <ul class="detailedrecordtabs"><li class="on first"><a href="/record/2880052/?ln=en">Information </a></li><li class=""><a href="/record/2880052/files?ln=en">Files </a></li></ul> <div id="tabsSpacer" style="clear:both;height:0px"> </div></div> </div> <div class="detailedrecordboxcontent"> <div class="top-left-folded"></div> <div class="top-right-folded"></div> <div class="inside">  <abbr class="unapi-id" title="2880052"></abbr> <style type="text/css">  </style> <table class="formatRecordTableFullWidth" > <tr> <td class="formatRecordHeader" style="background-image: url('https://cds.cern.ch/img/journals.jpg');" colspan="2">  Article </td> </tr> <script type="text/javascript"> $( document ).ready(function() { $('.showAuthor').on('click', function() { var author = '<p>' + $(this).data('name') + '</p>'; var affiliation = $(this).data('affiliation') + '</br>'; var contribution = $(this).data('contribution') + '</br>'; $.magnificPopup.open({ items: { src: '<div id="ovelary-mathjax" class="overlay-white oc-content overlay-white-500">' + author + affiliation + contribution + '</div>', type: 'inline' }, callbacks: { open: function() { var div = document.getElementById("overlay-mathjax") MathJax.Hub.Queue(["Typeset", MathJax.Hub, div]); }, } }) }) }); </script> <tr><td class="formatRecordLabel"> Report number </td><td style="padding-left:5px;"><a href="http://arxiv.org/abs/arXiv:2310.16915">arXiv:2310.16915</a></td></tr> <tr><td class="formatRecordLabel"> Title </td><td style="padding-left:5px;"><b>Further evidence for shape coexistence in $^{79}$Zn$^{m}$ near doubly-magic $^{78}$Ni</b></td></tr> <tr><td class="formatRecordLabel" style="vertical-align:top;">Related title</td><td style="padding-left:5px; ">Further Evidence for Shape Coexistence in <math><mrow><msup><mrow><mmultiscripts><mrow><mi>Zn</mi></mrow><mprescripts></mprescripts><none></none><mrow><mn>79</mn></mrow></mmultiscripts></mrow><mrow><mi>m</mi></mrow></msup></mrow></math> near Doubly Magic <math><mrow><mmultiscripts><mrow><mi>Ni</mi></mrow><mprescripts></mprescripts><none></none><mrow><mn>78</mn></mrow></mmultiscripts></mrow></math><br/></td></tr> <tr><td class="formatRecordLabel"><span style="white-space:nowrap;"> Author(s) </span> </td><td style="padding-left:5px;"> <script type="text/javascript"> function toggle_authors_visibility(){ var more = document.getElementById('more'); var link = document.getElementById('link'); var extension = document.getElementById('extension'); if (more.style.display=='none'){ more.style.display = ''; extension.style.display = 'none'; link.innerHTML = "Hide" } else { more.style.display = 'none'; extension.style.display = ''; link.innerHTML = "Show all 34 authors" } link.style.color = "rgb(204,0,0);" } function set_up(){ var extension = document.getElementById('extension'); extension.innerHTML = ""; toggle_authors_visibility(); } </script> <a name="show_hide" /><a href="https://cds.cern.ch/search?f=author&p=Nies%2C%20L.&ln=en">Nies, L.</a> (CERN ; Greifswald U.) ; <a href="https://cds.cern.ch/search?f=author&p=Canete%2C%20L.&ln=en">Canete, L.</a> (Jyvaskyla U. ; Surrey U.) ; <a href="https://cds.cern.ch/search?f=author&p=Dao%2C%20D.D.&ln=en">Dao, D.D.</a> (Strasbourg, IPHC) ; <a href="https://cds.cern.ch/search?f=author&p=Giraud%2C%20S.&ln=en">Giraud, S.</a> (GANIL) ; <a href="https://cds.cern.ch/search?f=author&p=Kankainen%2C%20A.&ln=en">Kankainen, A.</a> (Jyvaskyla U.) ; <a href="https://cds.cern.ch/search?f=author&p=Lunney%2C%20D.&ln=en">Lunney, D.</a> (IJCLab, Orsay) ; <a href="https://cds.cern.ch/search?f=author&p=Nowacki%2C%20F.&ln=en">Nowacki, F.</a> (Strasbourg, IPHC) ; <a href="https://cds.cern.ch/search?f=author&p=Bastin%2C%20B.&ln=en">Bastin, B.</a> (GANIL) ; <a href="https://cds.cern.ch/search?f=author&p=Stryjczyk%2C%20M.&ln=en">Stryjczyk, M.</a> (Jyvaskyla U.) ; <a href="https://cds.cern.ch/search?f=author&p=Ascher%2C%20P.&ln=en">Ascher, P.</a> (LP2I, Bordeaux)<span id="more" style=""> ; <a href="https://cds.cern.ch/search?f=author&p=Blaum%2C%20K.&ln=en">Blaum, K.</a> (Garching, Max Planck Inst.) ; <a href="https://cds.cern.ch/search?f=author&p=Cakirli%2C%20R.B.&ln=en">Cakirli, R.B.</a> (Istanbul U.) ; <a href="https://cds.cern.ch/search?f=author&p=Eronen%2C%20T.&ln=en">Eronen, T.</a> (Jyvaskyla U.) ; <a href="https://cds.cern.ch/search?f=author&p=Fischer%2C%20P.&ln=en">Fischer, P.</a> (Greifswald U.) ; <a href="https://cds.cern.ch/search?f=author&p=Flayol%2C%20M.&ln=en">Flayol, M.</a> (LP2I, Bordeaux) ; <a href="https://cds.cern.ch/search?f=author&p=Girard%20Alcindor%2C%20V.&ln=en">Girard Alcindor, V.</a> (GANIL) ; <a href="https://cds.cern.ch/search?f=author&p=Herlert%2C%20A.&ln=en">Herlert, A.</a> (FAIR, Darmstadt) ; <a href="https://cds.cern.ch/search?f=author&p=Jokinen%2C%20A.&ln=en">Jokinen, A.</a> (Jyvaskyla U.) ; <a href="https://cds.cern.ch/search?f=author&p=Khanam%2C%20A.&ln=en">Khanam, A.</a> (Jyvaskyla U. ; Aalto U. ; Helsinki U.) ; <a href="https://cds.cern.ch/search?f=author&p=K%C3%B6ster%2C%20U.&ln=en">Köster, U.</a> (CERN ; Laue-Langevin Inst.) ; <a href="https://cds.cern.ch/search?f=author&p=Lange%2C%20D.&ln=en">Lange, D.</a> (Garching, Max Planck Inst.) ; <a href="https://cds.cern.ch/search?f=author&p=Moore%2C%20I.D.&ln=en">Moore, I.D.</a> (Jyvaskyla U.) ; <a href="https://cds.cern.ch/search?f=author&p=M%C3%BCller%2C%20M.&ln=en">Müller, M.</a> (Garching, Max Planck Inst.) ; <a href="https://cds.cern.ch/search?f=author&p=Mougeot%2C%20M.&ln=en">Mougeot, M.</a> (Jyvaskyla U. ; Garching, Max Planck Inst.) ; <a href="https://cds.cern.ch/search?f=author&p=Nesterenko%2C%20D.A.&ln=en">Nesterenko, D.A.</a> (Jyvaskyla U.) ; <a href="https://cds.cern.ch/search?f=author&p=Penttil%C3%A4%2C%20H.&ln=en">Penttilä, H.</a> (Jyvaskyla U.) ; <a href="https://cds.cern.ch/search?f=author&p=Petrone%2C%20C.&ln=en">Petrone, C.</a> (Bucharest, IFIN-HH) ; <a href="https://cds.cern.ch/search?f=author&p=Pohjalainen%2C%20I.&ln=en">Pohjalainen, I.</a> (Jyvaskyla U.) ; <a href="https://cds.cern.ch/search?f=author&p=de%20Roubin%2C%20A.&ln=en">de Roubin, A.</a> (Jyvaskyla U.) ; <a href="https://cds.cern.ch/search?f=author&p=Rubchenya%2C%20V.&ln=en">Rubchenya, V.</a> (Jyvaskyla U.) ; <a href="https://cds.cern.ch/search?f=author&p=Schweiger%2C%20Ch.&ln=en">Schweiger, Ch.</a> (Garching, Max Planck Inst.) ; <a href="https://cds.cern.ch/search?f=author&p=Schweikhard%2C%20L.&ln=en">Schweikhard, L.</a> (Greifswald U.) ; <a href="https://cds.cern.ch/search?f=author&p=Vilen%2C%20M.&ln=en">Vilen, M.</a> (Jyvaskyla U.) ; <a href="https://cds.cern.ch/search?f=author&p=%C3%84yst%C3%B6%2C%20J.&ln=en">Äystö, J.</a> (Jyvaskyla U.)</span> <span id="extension"></span> <small><i><a id="link" href="#" onclick="toggle_authors_visibility()" style="color:rgb(204,0,0);"></a></i></small><script type="text/javascript">set_up()</script></td></tr> <tr><td class="formatRecordLabel"> Publication </td><td style="padding-left:5px;">2023-11-30</td></tr> <tr><td class="formatRecordLabel"> Imprint </td><td style="padding-left:5px;">2023-10-25</td></tr> <tr><td class="formatRecordLabel"> Number of pages </td><td style="padding-left:5px;">10</td></tr> <tr><td class="formatRecordLabel"> Note </td><td style="padding-left:5px;">10 pages, three figures, two tables. Accepted to Phys. Rev. Lett</td></tr> <tr><td class="formatRecordLabel"> In: </td><td style="padding-left:5px;"><a href="http://link.aps.org/abstract/PRL/22">Phys. Rev. Lett.</a><br/><a href="http://link.aps.org/abstract/PRL/22">Phys. Rev. Lett.</a></td></tr> <tr><td class="formatRecordLabel"> DOI </td><td style="padding-left:5px;"><a href="http://dx.doi.org/10.1103/PhysRevLett.131.222503" title="DOI" target="_blank">10.1103/PhysRevLett.131.222503</a> (publication)<br/> <a href="http://dx.doi.org/10.1103/PhysRevLett.131.222503" title="DOI" target="_blank">10.1103/PhysRevLett.131.222503</a> <tr><td class="formatRecordLabel"> Subject category </td><td style="padding-left:5px;">nucl-th ; Nuclear Physics - Theory ; nucl-ex ; Nuclear Physics - Experiment</td></tr> <tr><td class="formatRecordLabel"> Abstract </td><td style="padding-left:5px;">Isomers close to doubly-magic $^{78}_{28}$Ni$_{50}$ provide essential information on the shell evolution and shape coexistence near the ${Z=28}$ and ${N=50}$ double shell closure. We report the excitation energy measurement of the $1/2^{+}$ isomer in $^{79}_{30}$Zn$_{49}$ through independent high-precision mass measurements with the JYFLTRAP double Penning trap and with the ISOLTRAP Multi-Reflection Time-of-Flight Mass Spectrometer. We unambiguously place the $1/2^{+}$ isomer at 942(10) keV, slightly below the $5/2^+$ state at 983(3) keV. With the use of state-of-the-art shell-model diagonalizations, complemented with Discrete Non Orthogonal shell-model calculations which are used here the first time to interpret shape coexistence, we find low-lying deformed intruder states, similar to other ${N=49}$ isotones. The $1/2^{+}$ isomer is interpreted as the band-head of a low-lying deformed structure akin to a predicted low-lying deformed band in $^{80}$Zn, and points to shape coexistence in $^{79,80}$Zn similar to the one observed in $^{78}$Ni. The results make a strong case for confirming the claim of shape coexistence in this key region of the nuclear chart.</td></tr> <tr><td class="formatRecordLabel"> Copyright/License </td><td style="padding-left:5px;">publication: Published by the American Physical Society (License: <a href="https://creativecommons.org/licenses/by/4.0/deed.en">CC-BY-4.0</a>)<br/>preprint: (License: <a href="http://creativecommons.org/licenses/by/4.0/">CC BY 4.0</a>)</td></tr> </table> <br /><div style="max-width:1024px;margin:auto"><div style="overflow-x:auto;display:inline;width:100%;"><a href="/record/2880052/plots#0"><img style="vertical-align:middle;" src="https://cds.cern.ch/record/2880052/files/fig1.png" title=" (a) A typical ToF-ICR spectrum for the $1/2^+$ state in $^{79}$Zn$^+$. Colored bins indicate the number of detected ions. Darker shades correspond to more ions and lighter shades to fewer ions. The solid red line represents the fit to the data points (black) using the model from Ref.~\cite{Konig1995}. The cyclotron frequencies are indicated with a vertical black dashed line for the ground state (not present in this spectrum) and a vertical blue dash-dotted line for the isomer. (b) Time-of-Flight spectrum for the MR-ToF MS data. The ToF of the ground state is indicated by a vertical black dashed line, and the ToF of the isomer by a vertical blue dash-dotted line. The solid red line represents the fit to the data using the model from Ref.~\cite{2017_Purushothaman_hyperEMG}." width="200px"/></a> <a href="/record/2880052/plots#1"><img style="vertical-align:middle;" src="https://cds.cern.ch/record/2880052/files/fig2.png" title=" Occupancy differences between excited states in $^{79,80}$Zn, and $^{78}$Ni with their respective ground states. The data for $^{78}$Ni is taken from~\cite{Nowacki2016}." width="200px"/></a> <a href="/record/2880052/plots#2"><img style="vertical-align:middle;" src="https://cds.cern.ch/record/2880052/files/fig3.png" title=" DNO-SM expansions in the ($\beta, \gamma$) plane (using the same energy scale) for low-lying states in $^{79}$Zn ($9/2^+_1$, $1/2^+_1$ and $5/2^+_1$ in upper panel) and $^{80}$Zn ($0^+_1$ and $0^+_2$ in lower panel). The radius of circles represents the normalized probability of finding a deformation of ($\beta, \gamma$) in the corresponding state." width="200px"/></a> <a href='/record/2880052/plots'>Show more plots</a></div></div><br /> <br/>Corresponding record in: <a href="http://inspirehep.net/record/2714507">Inspire</a> <small> </small> <br/> <br/><br/><div align="right"><div style="padding-bottom:2px;padding-top:30px;"><span class="moreinfo" style="margin-right:10px;"> <a href="" class="moreinfo">Back to search</a> </span></div></div> <div class="bottom-left-folded"><div class="recordlastmodifiedbox" style="position:relative;margin-left:1px"> Record created 2023-11-15, last modified 2025-02-04</div></div> <div class="bottom-right-folded" style="text-align:right;padding-bottom:2px;"> <span class="moreinfo" style="margin-right:10px;"><a href="/search?ln=en&p=recid%3A2880052&rm=wrd" class="moreinfo">Similar records</a></span></div> </div> </div> </div> <br/> <br /> <div class="detailedrecordminipanel"> <div class="top-left"></div><div class="top-right"></div> <div class="inside"> <div id="detailedrecordminipanelfile" style="width:33%;float:left;text-align:center;margin-top:0"> <div><small class="detailedRecordActions">Fulltext:</small> <br /><a href="/record/2880052/files/2310.16915.pdf"><img style="border:none" src="/img/file-icon-text-34x48.gif" alt="Download fulltext" /><br />PDF</a><br /></div> </div> <div id="detailedrecordminipanelreview" style="width:30%;float:left;text-align:center"> </div> <div id="detailedrecordminipanelactions" style="width:36%;float:right;text-align:right;"> <ul class="detailedrecordactions"> <li><a href="/yourbaskets/add?ln=en&recid=2880052">Add to personal basket</a></li> <li>Export as <a style="text-decoration:underline;font-weight:normal" href="/record/2880052/export/hx?ln=en">BibTeX</a>, <a style="text-decoration:underline;font-weight:normal" href="/record/2880052/export/hm?ln=en">MARC</a>, <a style="text-decoration:underline;font-weight:normal" href="/record/2880052/export/xm?ln=en">MARCXML</a>, <a style="text-decoration:underline;font-weight:normal" href="/record/2880052/export/xd?ln=en">DC</a>, <a style="text-decoration:underline;font-weight:normal" href="/record/2880052/export/xe?ln=en">EndNote</a>,  <a style="text-decoration:underline;font-weight:normal" href="/record/2880052/export/xn?ln=en">NLM</a>, <a style="text-decoration:underline;font-weight:normal" href="/record/2880052/export/xw?ln=en">RefWorks</a> </li> </ul> <div style='padding-left: 13px;'>  <div id="bookmark"></div> <div id="bookmark_sciencewise"></div> <style type="text/css"> #bookmark_sciencewise, #bookmark {float: left;} #bookmark_sciencewise li {padding: 2px; width: 25px;} #bookmark_sciencewise ul, #bookmark ul {list-style-image: none;} </style> <script type="text/javascript" src="/js/jquery.bookmark.min.js"></script> <style type="text/css">@import "/css/jquery.bookmark.css";</style> <script type="text/javascript">// <![CDATA[ $.bookmark.addSite('sciencewise', 'ScienceWise.info', 'https://cds.cern.ch/img/sciencewise.png', 'en', 'bookmark', 'http://sciencewise.info/bookmarks/2310.1691/add'); $('#bookmark_sciencewise').bookmark({sites: ['sciencewise']}); $('#bookmark').bookmark({ sites: ['facebook', 'twitter', 'linkedin', 'google_plusone'], icons: '/img/bookmarks.png', url: 'https://cds.cern.ch/record/2880052', addEmail: true, title: "Further evidence for shape coexistence in $^{79}$Zn$^{m}$ near doubly-magic $^{78}$Ni", description: "Isomers close to doubly magic <math display=\"inline\"><mrow><mmultiscripts><mrow><msub><mrow><mi>Ni</mi></mrow><mrow><mn>50</mn></mrow></msub></mrow><mprescripts/><mrow><mn>28</mn></mrow><mrow><mn>78</mn></mrow></mmultiscripts></mrow></math> provide essential information on the shell evolution and shape coexistence near the <math display=\"inline\"><mi>Z</mi><mo>=</mo><mn>28</mn></math> and <math display=\"inline\"><mi>N</mi><mo>=</mo><mn>50</mn></math> double shell closure. We report the excitation energy measurement of the <math display=\"inline\"><mrow><mn>1</mn><mo>/</mo><msup><mrow><mn>2</mn></mrow><mrow><mo>+</mo></mrow></msup></mrow></math> isomer in <math display=\"inline\"><mrow><mmultiscripts><mrow><msub><mrow><mi>Zn</mi></mrow><mrow><mn>49</mn></mrow></msub></mrow><mprescripts/><mrow><mn>30</mn></mrow><mrow><mn>79</mn></mrow></mmultiscripts></mrow></math> through independent high-precision mass measurements with the JYFLTRAP double Penning trap and with the ISOLTRAP multi-reflection time-of-flight mass spectrometer. We unambiguously place the <math display=\"inline\"><mn>1</mn><mo>/</mo><msup><mn>2</mn><mo>+</mo></msup></math> isomer at 942(10)\u00a0keV, slightly below the <math display=\"inline\"><mn>5</mn><mo>/</mo><msup><mn>2</mn><mo>+</mo></msup></math> state at 983(3)\u00a0keV. With the use of state-of-the-art shell-model diagonalizations, complemented with discrete nonorthogonal shell-model calculations which are used here for the first time to interpret shape coexistence, we find low-lying deformed intruder states, similar to other <math display=\"inline\"><mi>N</mi><mo>=</mo><mn>49</mn></math> isotones. The <math display=\"inline\"><mn>1</mn><mo>/</mo><msup><mn>2</mn><mo>+</mo></msup></math> isomer is interpreted as the bandhead of a low-lying deformed structure akin to a predicted low-lying deformed band in <math display=\"inline\"><mrow><mmultiscripts><mrow><mi>Zn</mi></mrow><mprescripts/><none/><mrow><mn>80</mn></mrow></mmultiscripts></mrow></math>, and points to shape coexistence in <math display=\"inline\"><mrow><mmultiscripts><mrow><mi>Zn</mi></mrow><mprescripts/><none/><mrow><mn>79</mn><mo>,</mo><mn>80</mn></mrow></mmultiscripts></mrow></math> similar to the one observed in <math display=\"inline\"><mrow><mmultiscripts><mrow><mi>Ni</mi></mrow><mprescripts/><none/><mrow><mn>78</mn></mrow></mmultiscripts></mrow></math>. The results make a strong case for confirming the claim of shape coexistence in this key region of the nuclear chart." }); // ]]> </script>  </div> </div> <div style="clear:both;margin-bottom: 0;"></div> </div> <div class="bottom-left"></div><div class="bottom-right"></div> </div> </div></div> <footer id="footer" class="pagefooter clearfix">  <div class="pagefooterstripeleft"> CERN Document Server :: <a class="footer" href="https://cds.cern.ch/?ln=en">Search</a> :: <a class="footer" href="https://cds.cern.ch/submit?ln=en">Submit</a> :: <a class="footer" href="https://cds.cern.ch/youraccount/display?ln=en">Personalize</a> :: <a class="footer" href="https://cds.cern.ch/help/?ln=en">Help</a> :: <a class="footer" href="https://cern.service-now.com/service-portal?id=privacy_policy&se=CDS-Service" target="_blank">Privacy Notice</a> :: <a class="footer" href="https://repository.cern/content-policy" target="_blank">Content Policy</a> :: <a class="footer" href="https://repository.cern/terms" target="_blank">Terms and Conditions</a> <br /> Powered by <a class="footer" href="http://invenio-software.org/">Invenio</a> <br /> Maintained by <a class="footer" href="https://cern.service-now.com/service-portal?id=service_element&name=CDS-Service">CDS Service</a> - Need help? 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Further evidence for shape coexistence in $^{79}$Zn$^{m}$ near doubly-magic $^{78}$Ni - CERN Document Server