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<!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>Octupole states in $^{207}$Tl studied through $β$ decay - 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/2724786" /> <link rel="alternate" hreflang="el" href="https://cds.cern.ch/record/2724786?ln=el" /> <link rel="alternate" hreflang="fr" href="https://cds.cern.ch/record/2724786?ln=fr" /> <link rel="alternate" hreflang="bg" href="https://cds.cern.ch/record/2724786?ln=bg" /> <link rel="alternate" hreflang="zh-TW" href="https://cds.cern.ch/record/2724786?ln=zh_TW" /> <link rel="alternate" hreflang="pt" href="https://cds.cern.ch/record/2724786?ln=pt" /> <link rel="alternate" hreflang="no" href="https://cds.cern.ch/record/2724786?ln=no" /> <link rel="alternate" hreflang="hr" href="https://cds.cern.ch/record/2724786?ln=hr" /> <link rel="alternate" hreflang="ca" href="https://cds.cern.ch/record/2724786?ln=ca" /> <link rel="alternate" hreflang="de" href="https://cds.cern.ch/record/2724786?ln=de" /> <link rel="alternate" hreflang="it" href="https://cds.cern.ch/record/2724786?ln=it" /> <link rel="alternate" hreflang="zh-CN" href="https://cds.cern.ch/record/2724786?ln=zh_CN" /> <link rel="alternate" hreflang="sv" href="https://cds.cern.ch/record/2724786?ln=sv" /> <link rel="alternate" hreflang="sk" href="https://cds.cern.ch/record/2724786?ln=sk" /> <link rel="alternate" hreflang="en" href="https://cds.cern.ch/record/2724786?ln=en" /> <link rel="alternate" hreflang="pl" href="https://cds.cern.ch/record/2724786?ln=pl" /> <link rel="alternate" hreflang="ru" href="https://cds.cern.ch/record/2724786?ln=ru" /> <link rel="alternate" hreflang="ka" href="https://cds.cern.ch/record/2724786?ln=ka" /> <link rel="alternate" hreflang="ja" href="https://cds.cern.ch/record/2724786?ln=ja" /> <link rel="alternate" hreflang="es" href="https://cds.cern.ch/record/2724786?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="The $β$ decay of $^{207}$Hg into the single-proton-hole nucleus $^{207}$Tl has been studied through $γ$-ray spectroscopy at the ISOLDE Decay Station (IDS) with the aim of identifying states resulting from coupling of the $πs^{−1}_{1/2}, πd^{−1}_{3/2},$ and $πh^{−1}_{11/2}$ shell model orbitals to the collective octupole vibration. Twenty-two states were observed lying between 2.6 and 4.0 MeV, eleven of which were observed for the first time, and 78 new transitions were placed. Two octupole states (s1/2-coupled) are identified and three more states ($d_{3/2}$-coupled) are tentatively assigned using spin-parity inferences, while further $h_{11/2}$-coupled states may also have been observed for the first time. Comparisons are made with state-of-the-art large-scale shell model calculations and previous observations made in this region, and systematic underestimation of the energy of the octupole vibrational states is noted. We suggest that in order to resolve the difference in predicted energies for collective and noncollective $t=1$ states ($t$ is the number of nucleons breaking the $^{208}$Pb core), the effect of $t=2$ mixing may be reduced for octupole-coupled states. The inclusion of mixing with $t=0,2,3$ excitations is necessary to replicate all $t=1$ state energies accurately. Berry, T A; Podolyák, Zs; Carroll, R J; Lică, R; Brown, B A; Grawe, H; Sotty, Ch; Timofeyuk, N K; Alexander, T; Andreyev, A N; Ansari, S; Borge, M J G; Brunet, M; Cresswell, J R; Fahlander, C; Fraile, L M; Fynbo, H O U; Gamba, E; Gelletly, W; Gerst, R B; Górska, M; Gredley, A; Greenlees, P; Harkness-Brennan, L J; Huyse, M; Judge, S M; Judson, D S; Konki, J; Kowalska, M; Kurcewicz, J; Kuti, I; Lalkovski, S; Lazarus, I; Lund, M; Madurga, M; Mărginean, N; Mărginean, R; Marroquin, I; Mihai, C; Mihai, R E; Nácher, E; Negret, A; Nae, S; Niţă, C; Pascu, S; Page, R D; Patel, Z; Perea, A; Phrompao, J; Piersa, M; Pucknell, V; Rahkila, P; Rapisarda, E; Regan, P H; Rotaru, F; Rudigier, M; Shand, C M; Shearman, R; Simpson, E C; Stegemann, S; Stora, T; Tengblad, O; Turturica, A; Van Duppen, P; Vedia, V; Walker, P M; Warr, N; Wearing, F P; De Witte, H" /> <meta name="keywords" content="Nuclear Structure" /> <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" }); 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Twenty-two states were observed lying between 2.6 and 4.0 MeV, eleven of which were observed for the first time, and 78 new transitions were placed. Two octupole states (s1/2-coupled) are identified and three more states ($d_{3/2}$-coupled) are tentatively assigned using spin-parity inferences, while further $h_{11/2}$-coupled states may also have been observed for the first time. Comparisons are made with state-of-the-art large-scale shell model calculations and previous observations made in this region, and systematic underestimation of the energy of the octupole vibrational states is noted. We suggest that in order to resolve the difference in predicted energies for collective and noncollective $t=1$ states ($t$ is the number of nucleons breaking the $^{208}$Pb core), the effect of $t=2$ mixing may be reduced for octupole-coupled states. The inclusion of mixing with $t=0,2,3$ excitations is necessary to replicate all $t=1$ state energies accurately." 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/2724786%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> > Octupole states in $^{207}$Tl studied through $β$ decay </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/2724786/?ln=en">Information </a></li><li class=""><a href="/record/2724786/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="2724786"></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">  <a style="color:#fff;text-decoration:none" href="https://cds.cern.ch/collection/Published%20Articles">Published Articles</a> </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"> Title </td><td style="padding-left:5px;"><b>Octupole states in $^{207}$Tl studied through $β$ decay</b></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 69 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=Berry%2C%20T%20A&ln=en">Berry, T A</a> (Surrey U.) ; <a href="https://cds.cern.ch/search?f=author&p=Podoly%C3%A1k%2C%20Zs&ln=en">Podolyák, Zs</a> (Surrey U.) ; <a href="https://cds.cern.ch/search?f=author&p=Carroll%2C%20R%20J&ln=en">Carroll, R J</a> (Surrey U.) ; <a href="https://cds.cern.ch/search?f=author&p=Lic%C4%83%2C%20R&ln=en">Lică, R</a> (CERN ; Bucharest, IFIN-HH) ; <a href="https://cds.cern.ch/search?f=author&p=Brown%2C%20B%20A&ln=en">Brown, B A</a> (Michigan State U.) ; <a href="https://cds.cern.ch/search?f=author&p=Grawe%2C%20H&ln=en">Grawe, H</a> (Darmstadt, GSI) ; <a href="https://cds.cern.ch/search?f=author&p=Sotty%2C%20Ch&ln=en">Sotty, Ch</a> (Bucharest, IFIN-HH ; Leuven U.) ; <a href="https://cds.cern.ch/search?f=author&p=Timofeyuk%2C%20N%20K&ln=en">Timofeyuk, N K</a> (Surrey U.) ; <a href="https://cds.cern.ch/search?f=author&p=Alexander%2C%20T&ln=en">Alexander, T</a> (Surrey U.) ; <a href="https://cds.cern.ch/search?f=author&p=Andreyev%2C%20A%20N&ln=en">Andreyev, A N</a> (York U., England)<span id="more" style=""> ; <a href="https://cds.cern.ch/search?f=author&p=Ansari%2C%20S&ln=en">Ansari, S</a> (Cologne U.) ; <a href="https://cds.cern.ch/search?f=author&p=Borge%2C%20M%20J%20G&ln=en">Borge, M J G</a> (CERN) ; <a href="https://cds.cern.ch/search?f=author&p=Brunet%2C%20M&ln=en">Brunet, M</a> (Surrey U.) ; <a href="https://cds.cern.ch/search?f=author&p=Cresswell%2C%20J%20R&ln=en">Cresswell, J R</a> (Liverpool U.) ; <a href="https://cds.cern.ch/search?f=author&p=Fahlander%2C%20C&ln=en">Fahlander, C</a> (Lund U.) ; <a href="https://cds.cern.ch/search?f=author&p=Fraile%2C%20L%20M&ln=en">Fraile, L M</a> (UCM, Madrid, Dept. Phys.) ; <a href="https://cds.cern.ch/search?f=author&p=Fynbo%2C%20H%20O%20U&ln=en">Fynbo, H O U</a> (Aarhus U.) ; <a href="https://cds.cern.ch/search?f=author&p=Gamba%2C%20E&ln=en">Gamba, E</a> (Brighton U.) ; <a href="https://cds.cern.ch/search?f=author&p=Gelletly%2C%20W&ln=en">Gelletly, W</a> (Surrey U.) ; <a href="https://cds.cern.ch/search?f=author&p=Gerst%2C%20R%20B&ln=en">Gerst, R B</a> (Cologne U.) ; <a href="https://cds.cern.ch/search?f=author&p=G%C3%B3rska%2C%20M&ln=en">Górska, M</a> (Darmstadt, GSI) ; <a href="https://cds.cern.ch/search?f=author&p=Gredley%2C%20A&ln=en">Gredley, A</a> (Liverpool U.) ; <a href="https://cds.cern.ch/search?f=author&p=Greenlees%2C%20P&ln=en">Greenlees, P</a> (Jyvaskyla U. ; Helsinki U.) ; <a href="https://cds.cern.ch/search?f=author&p=Harkness-Brennan%2C%20L%20J&ln=en">Harkness-Brennan, L J</a> (Liverpool U.) ; <a href="https://cds.cern.ch/search?f=author&p=Huyse%2C%20M&ln=en">Huyse, M</a> (Leuven U.) ; <a href="https://cds.cern.ch/search?f=author&p=Judge%2C%20S%20M&ln=en">Judge, S M</a> (Teddington, Natl. Phys. Lab) ; <a href="https://cds.cern.ch/search?f=author&p=Judson%2C%20D%20S&ln=en">Judson, D S</a> (Liverpool U.) ; <a href="https://cds.cern.ch/search?f=author&p=Konki%2C%20J&ln=en">Konki, J</a> (Jyvaskyla U.) ; <a href="https://cds.cern.ch/search?f=author&p=Kowalska%2C%20M&ln=en">Kowalska, M</a> (CERN) ; <a href="https://cds.cern.ch/search?f=author&p=Kurcewicz%2C%20J&ln=en">Kurcewicz, J</a> (CERN) ; <a href="https://cds.cern.ch/search?f=author&p=Kuti%2C%20I&ln=en">Kuti, I</a> (Debrecen, Inst. Nucl. Res.) ; <a href="https://cds.cern.ch/search?f=author&p=Lalkovski%2C%20S&ln=en">Lalkovski, S</a> (Surrey U.) ; <a href="https://cds.cern.ch/search?f=author&p=Lazarus%2C%20I&ln=en">Lazarus, I</a> (Daresbury) ; <a href="https://cds.cern.ch/search?f=author&p=Lund%2C%20M&ln=en">Lund, M</a> (Aarhus U.) ; <a href="https://cds.cern.ch/search?f=author&p=Madurga%2C%20M&ln=en">Madurga, M</a> (CERN) ; <a href="https://cds.cern.ch/search?f=author&p=M%C4%83rginean%2C%20N&ln=en">Mărginean, N</a> (Bucharest, IFIN-HH) ; <a href="https://cds.cern.ch/search?f=author&p=M%C4%83rginean%2C%20R&ln=en">Mărginean, R</a> (Bucharest, IFIN-HH) ; <a href="https://cds.cern.ch/search?f=author&p=Marroquin%2C%20I&ln=en">Marroquin, I</a> (Madrid, Inst. Estructura Materia) ; <a href="https://cds.cern.ch/search?f=author&p=Mihai%2C%20C&ln=en">Mihai, C</a> (Bucharest, IFIN-HH) ; <a href="https://cds.cern.ch/search?f=author&p=Mihai%2C%20R%20E&ln=en">Mihai, R E</a> (Bucharest, IFIN-HH) ; <a href="https://cds.cern.ch/search?f=author&p=N%C3%A1cher%2C%20E&ln=en">Nácher, E</a> (Madrid, Inst. Estructura Materia) ; <a href="https://cds.cern.ch/search?f=author&p=Negret%2C%20A&ln=en">Negret, A</a> (Bucharest, IFIN-HH) ; <a href="https://cds.cern.ch/search?f=author&p=Nae%2C%20S&ln=en">Nae, S</a> (Bucharest, IFIN-HH) ; <a href="https://cds.cern.ch/search?f=author&p=Ni%C5%A3%C4%83%2C%20C&ln=en">Niţă, C</a> (Bucharest, IFIN-HH ; Brighton U.) ; <a href="https://cds.cern.ch/search?f=author&p=Pascu%2C%20S&ln=en">Pascu, S</a> (Bucharest, IFIN-HH) ; <a href="https://cds.cern.ch/search?f=author&p=Page%2C%20R%20D&ln=en">Page, R D</a> (Liverpool U.) ; <a href="https://cds.cern.ch/search?f=author&p=Patel%2C%20Z&ln=en">Patel, Z</a> (Surrey U.) ; <a href="https://cds.cern.ch/search?f=author&p=Perea%2C%20A&ln=en">Perea, A</a> (Madrid, Inst. Estructura Materia) ; <a href="https://cds.cern.ch/search?f=author&p=Phrompao%2C%20J&ln=en">Phrompao, J</a> (Chiang Mai U.) ; <a href="https://cds.cern.ch/search?f=author&p=Piersa%2C%20M&ln=en">Piersa, M</a> (Warsaw U.) ; <a href="https://cds.cern.ch/search?f=author&p=Pucknell%2C%20V&ln=en">Pucknell, V</a> (Daresbury) ; <a href="https://cds.cern.ch/search?f=author&p=Rahkila%2C%20P&ln=en">Rahkila, P</a> (Jyvaskyla U. ; Helsinki U.) ; <a href="https://cds.cern.ch/search?f=author&p=Rapisarda%2C%20E&ln=en">Rapisarda, E</a> (CERN) ; <a href="https://cds.cern.ch/search?f=author&p=Regan%2C%20P%20H&ln=en">Regan, P H</a> (Surrey U. ; Teddington, Natl. Phys. Lab) ; <a href="https://cds.cern.ch/search?f=author&p=Rotaru%2C%20F&ln=en">Rotaru, F</a> (Bucharest, IFIN-HH) ; <a href="https://cds.cern.ch/search?f=author&p=Rudigier%2C%20M&ln=en">Rudigier, M</a> (Surrey U.) ; <a href="https://cds.cern.ch/search?f=author&p=Shand%2C%20C%20M&ln=en">Shand, C M</a> (Surrey U.) ; <a href="https://cds.cern.ch/search?f=author&p=Shearman%2C%20R&ln=en">Shearman, R</a> (Surrey U. ; Teddington, Natl. Phys. Lab) ; <a href="https://cds.cern.ch/search?f=author&p=Simpson%2C%20E%20C&ln=en">Simpson, E C</a> (Australian Natl. U., Canberra) ; <a href="https://cds.cern.ch/search?f=author&p=Stegemann%2C%20S&ln=en">Stegemann, S</a> (Cologne U.) ; <a href="https://cds.cern.ch/search?f=author&p=Stora%2C%20T&ln=en">Stora, T</a> (CERN) ; <a href="https://cds.cern.ch/search?f=author&p=Tengblad%2C%20O&ln=en">Tengblad, O</a> (Madrid, Inst. Estructura Materia) ; <a href="https://cds.cern.ch/search?f=author&p=Turturica%2C%20A&ln=en">Turturica, A</a> (Bucharest, IFIN-HH) ; <a href="https://cds.cern.ch/search?f=author&p=Van%20Duppen%2C%20P&ln=en">Van Duppen, P</a> (Leuven U.) ; <a href="https://cds.cern.ch/search?f=author&p=Vedia%2C%20V&ln=en">Vedia, V</a> (UCM, Madrid, Dept. Phys.) ; <a href="https://cds.cern.ch/search?f=author&p=Walker%2C%20P%20M&ln=en">Walker, P M</a> (Surrey U.) ; <a href="https://cds.cern.ch/search?f=author&p=Warr%2C%20N&ln=en">Warr, N</a> (Cologne U.) ; <a href="https://cds.cern.ch/search?f=author&p=Wearing%2C%20F%20P&ln=en">Wearing, F P</a> (Liverpool U.) ; <a href="https://cds.cern.ch/search?f=author&p=De%20Witte%2C%20H&ln=en">De Witte, H</a> (Leuven 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;">2020</td></tr> <tr><td class="formatRecordLabel"> Number of pages </td><td style="padding-left:5px;">12</td></tr> <tr><td class="formatRecordLabel"> In: </td><td style="padding-left:5px;"><a href="http://dx.doi.org/10.1103/PhysRevC.101.054311"><i>Phys. Rev. C</i> 101 (2020) 054311</a> </a></td></tr> <tr><td class="formatRecordLabel"> DOI </td><td style="padding-left:5px;"><a href="http://dx.doi.org/10.1103/PhysRevC.101.054311" title="DOI" target="_blank">10.1103/PhysRevC.101.054311</a> <tr><td class="formatRecordLabel"> Subject category </td><td style="padding-left:5px;">Nuclear Physics - Experiment</td></tr> <tr><td class="formatRecordLabel"> Accelerator/Facility, Experiment </td><td style="padding-left:5px;"><a href="https://cds.cern.ch/search?p=CERN%20ISOLDE&f=693__e">CERN ISOLDE</a></td></tr> <tr><td class="formatRecordLabel"> Abstract </td><td style="padding-left:5px;">The $β$ decay of $^{207}$Hg into the single-proton-hole nucleus $^{207}$Tl has been studied through $γ$-ray spectroscopy at the ISOLDE Decay Station (IDS) with the aim of identifying states resulting from coupling of the $πs^{−1}_{1/2}, πd^{−1}_{3/2},$ and $πh^{−1}_{11/2}$ shell model orbitals to the collective octupole vibration. Twenty-two states were observed lying between 2.6 and 4.0 MeV, eleven of which were observed for the first time, and 78 new transitions were placed. Two octupole states (s1/2-coupled) are identified and three more states ($d_{3/2}$-coupled) are tentatively assigned using spin-parity inferences, while further $h_{11/2}$-coupled states may also have been observed for the first time. Comparisons are made with state-of-the-art large-scale shell model calculations and previous observations made in this region, and systematic underestimation of the energy of the octupole vibrational states is noted. We suggest that in order to resolve the difference in predicted energies for collective and noncollective $t=1$ states ($t$ is the number of nucleons breaking the $^{208}$Pb core), the effect of $t=2$ mixing may be reduced for octupole-coupled states. The inclusion of mixing with $t=0,2,3$ excitations is necessary to replicate all $t=1$ state energies accurately.</td></tr> <tr><td class="formatRecordLabel"> Copyright/License </td><td style="padding-left:5px;">publication: © 2020-2025 authors (License: <a href="https://creativecommons.org/licenses/by/4.0/">CC-BY-4.0</a>)</td></tr> </table> <br/>Corresponding record in: <a href="http://inspirehep.net/record/1797344">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 2020-07-24, last modified 2020-08-03</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%3A2724786&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 from publisher:</small> <br /><a href="/record/2724786/files/PhysRevC.101.054311.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=2724786">Add to personal basket</a></li> <li>Export as <a style="text-decoration:underline;font-weight:normal" href="/record/2724786/export/hx?ln=en">BibTeX</a>, <a style="text-decoration:underline;font-weight:normal" href="/record/2724786/export/hm?ln=en">MARC</a>, <a style="text-decoration:underline;font-weight:normal" href="/record/2724786/export/xm?ln=en">MARCXML</a>, <a style="text-decoration:underline;font-weight:normal" href="/record/2724786/export/xd?ln=en">DC</a>, <a style="text-decoration:underline;font-weight:normal" href="/record/2724786/export/xe?ln=en">EndNote</a>,  <a style="text-decoration:underline;font-weight:normal" href="/record/2724786/export/xn?ln=en">NLM</a>, <a style="text-decoration:underline;font-weight:normal" href="/record/2724786/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/cds:2724786/add'); $('#bookmark_sciencewise').bookmark({sites: ['sciencewise']}); $('#bookmark').bookmark({ sites: ['facebook', 'twitter', 'linkedin', 'google_plusone'], icons: '/img/bookmarks.png', url: 'https://cds.cern.ch/record/2724786', addEmail: true, title: "Octupole states in $^{207}$Tl studied through $\u03b2$ decay", description: "The $\u03b2$ decay of $^{207}$Hg into the single-proton-hole nucleus $^{207}$Tl has been studied through $\u03b3$-ray spectroscopy at the ISOLDE Decay Station (IDS) with the aim of identifying states resulting from coupling of the $\u03c0s^{\u22121}_{1/2}, \u03c0d^{\u22121}_{3/2},$ and $\u03c0h^{\u22121}_{11/2}$ shell model orbitals to the collective octupole vibration. Twenty-two states were observed lying between 2.6 and 4.0 MeV, eleven of which were observed for the first time, and 78 new transitions were placed. Two octupole states (s1/2-coupled) are identified and three more states ($d_{3/2}$-coupled) are tentatively assigned using spin-parity inferences, while further $h_{11/2}$-coupled states may also have been observed for the first time. Comparisons are made with state-of-the-art large-scale shell model calculations and previous observations made in this region, and systematic underestimation of the energy of the octupole vibrational states is noted. We suggest that in order to resolve the difference in predicted energies for collective and noncollective $t=1$ states ($t$ is the number of nucleons breaking the $^{208}$Pb core), the effect of $t=2$ mixing may be reduced for octupole-coupled states. The inclusion of mixing with $t=0,2,3$ excitations is necessary to replicate all $t=1$ state energies accurately." }); // ]]> </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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