Erosion of N=20 shell in Al-33 investigated through the ground-state electric quadrupole moment
Electric quadrupole moment Q of the 33Al ground state has been measured by means of β-NMR spectroscopy using a spin-polarized 33Al beam produced in a projectile fragmentation reaction. The obtained Q moment, |Qexp(33Al)| = 132(16) emb, shows a significant excess from the prediction of shell model ca...
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| Veröffentlicht in: | Physics Letters B 2012, Vol.714 (2), p.246-250 |
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| creator | Shimada, K Ueno, H Neyens, Gerda Asahi, K Balabanski, D.L Daugas, J.M Depuydt, M De Rydt, Marieke Gaudefroy, L Grevy, S Hasama, Y Ichikawa, Y Kameda, D Morel, P Nagatomo, T Perrot, L Stodel, Ch Thomas, J.-C Utsuno, Y Vanderheijden, W Vermeulen, Nele Vingerhoets, Pieter Yagi, E Yoshida, K Yoshimi, A |
| description | Electric quadrupole moment Q of the 33Al ground state has been measured by means of β-NMR spectroscopy using a spin-polarized 33Al beam produced in a projectile fragmentation reaction. The obtained Q moment, |Qexp(33Al)| = 132(16) emb, shows a significant excess from the prediction of shell model calculations within the sd shell. The result indicates sizable admixing of pf intruder configurations in the ground state, demonstrating that the N = 20 shell closure certainly erodes in 33Al, a nucleus
located on the border of the island of inversion. Comparison was made with predictions of the Monte
Carlo shell model, and also a particle-vibration coupling model treating the neutron pairing correlations
in the ground state of 33Al. Again, a significant admixture of pf intruder configurations to the 33Al ground
state was needed in both theoretical approaches to explain the observed large Q . |
| format | Article |
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located on the border of the island of inversion. Comparison was made with predictions of the Monte
Carlo shell model, and also a particle-vibration coupling model treating the neutron pairing correlations
in the ground state of 33Al. Again, a significant admixture of pf intruder configurations to the 33Al ground
state was needed in both theoretical approaches to explain the observed large Q .</description><identifier>ISSN: 0370-2693</identifier><language>eng</language><publisher>ELSEVIER</publisher><ispartof>Physics Letters B, 2012, Vol.714 (2), p.246-250</ispartof><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,315,776,780,4010,27837</link.rule.ids></links><search><creatorcontrib>Shimada, K</creatorcontrib><creatorcontrib>Ueno, H</creatorcontrib><creatorcontrib>Neyens, Gerda</creatorcontrib><creatorcontrib>Asahi, K</creatorcontrib><creatorcontrib>Balabanski, D.L</creatorcontrib><creatorcontrib>Daugas, J.M</creatorcontrib><creatorcontrib>Depuydt, M</creatorcontrib><creatorcontrib>De Rydt, Marieke</creatorcontrib><creatorcontrib>Gaudefroy, L</creatorcontrib><creatorcontrib>Grevy, S</creatorcontrib><creatorcontrib>Hasama, Y</creatorcontrib><creatorcontrib>Ichikawa, Y</creatorcontrib><creatorcontrib>Kameda, D</creatorcontrib><creatorcontrib>Morel, P</creatorcontrib><creatorcontrib>Nagatomo, T</creatorcontrib><creatorcontrib>Perrot, L</creatorcontrib><creatorcontrib>Stodel, Ch</creatorcontrib><creatorcontrib>Thomas, J.-C</creatorcontrib><creatorcontrib>Utsuno, Y</creatorcontrib><creatorcontrib>Vanderheijden, W</creatorcontrib><creatorcontrib>Vermeulen, Nele</creatorcontrib><creatorcontrib>Vingerhoets, Pieter</creatorcontrib><creatorcontrib>Yagi, E</creatorcontrib><creatorcontrib>Yoshida, K</creatorcontrib><creatorcontrib>Yoshimi, A</creatorcontrib><title>Erosion of N=20 shell in Al-33 investigated through the ground-state electric quadrupole moment</title><title>Physics Letters B</title><description>Electric quadrupole moment Q of the 33Al ground state has been measured by means of β-NMR spectroscopy using a spin-polarized 33Al beam produced in a projectile fragmentation reaction. The obtained Q moment, |Qexp(33Al)| = 132(16) emb, shows a significant excess from the prediction of shell model calculations within the sd shell. The result indicates sizable admixing of pf intruder configurations in the ground state, demonstrating that the N = 20 shell closure certainly erodes in 33Al, a nucleus
located on the border of the island of inversion. Comparison was made with predictions of the Monte
Carlo shell model, and also a particle-vibration coupling model treating the neutron pairing correlations
in the ground state of 33Al. Again, a significant admixture of pf intruder configurations to the 33Al ground
state was needed in both theoretical approaches to explain the observed large Q .</description><issn>0370-2693</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2012</creationdate><recordtype>article</recordtype><sourceid>FZOIL</sourceid><recordid>eNqVjrsOgjAYRjtoIl7e4d8cDEmhAjI4GINxcnJvGvi5aGmRtsTHt4MPoNM5yXeGb0YCyjIaxmnOFmRpzINSGiU0DQgvRm06rUDXcDvGFEyLUkKn4CRDxrxMaGzXCIsV2HbUrmk9ERqvqgqN9QugxNKOXQkvJ6rRDVoi9LpHZddkXgtpcPPlimwvxf18DZ9OoptQ8coMokQexWyfpNkh5_5pEkXsn3L3W8nt27IP0fxRoA</recordid><startdate>2012</startdate><enddate>2012</enddate><creator>Shimada, K</creator><creator>Ueno, H</creator><creator>Neyens, Gerda</creator><creator>Asahi, K</creator><creator>Balabanski, D.L</creator><creator>Daugas, J.M</creator><creator>Depuydt, M</creator><creator>De Rydt, Marieke</creator><creator>Gaudefroy, L</creator><creator>Grevy, S</creator><creator>Hasama, Y</creator><creator>Ichikawa, Y</creator><creator>Kameda, D</creator><creator>Morel, P</creator><creator>Nagatomo, T</creator><creator>Perrot, L</creator><creator>Stodel, Ch</creator><creator>Thomas, J.-C</creator><creator>Utsuno, Y</creator><creator>Vanderheijden, W</creator><creator>Vermeulen, Nele</creator><creator>Vingerhoets, Pieter</creator><creator>Yagi, E</creator><creator>Yoshida, K</creator><creator>Yoshimi, A</creator><general>ELSEVIER</general><scope>FZOIL</scope></search><sort><creationdate>2012</creationdate><title>Erosion of N=20 shell in Al-33 investigated through the ground-state electric quadrupole moment</title><author>Shimada, K ; Ueno, H ; Neyens, Gerda ; Asahi, K ; Balabanski, D.L ; Daugas, J.M ; Depuydt, M ; De Rydt, Marieke ; Gaudefroy, L ; Grevy, S ; Hasama, Y ; Ichikawa, Y ; Kameda, D ; Morel, P ; Nagatomo, T ; Perrot, L ; Stodel, Ch ; Thomas, J.-C ; Utsuno, Y ; Vanderheijden, W ; Vermeulen, Nele ; Vingerhoets, Pieter ; Yagi, E ; Yoshida, K ; Yoshimi, A</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-kuleuven_dspace_123456789_3705113</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2012</creationdate><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Shimada, K</creatorcontrib><creatorcontrib>Ueno, H</creatorcontrib><creatorcontrib>Neyens, Gerda</creatorcontrib><creatorcontrib>Asahi, K</creatorcontrib><creatorcontrib>Balabanski, D.L</creatorcontrib><creatorcontrib>Daugas, J.M</creatorcontrib><creatorcontrib>Depuydt, M</creatorcontrib><creatorcontrib>De Rydt, Marieke</creatorcontrib><creatorcontrib>Gaudefroy, L</creatorcontrib><creatorcontrib>Grevy, S</creatorcontrib><creatorcontrib>Hasama, Y</creatorcontrib><creatorcontrib>Ichikawa, Y</creatorcontrib><creatorcontrib>Kameda, D</creatorcontrib><creatorcontrib>Morel, P</creatorcontrib><creatorcontrib>Nagatomo, T</creatorcontrib><creatorcontrib>Perrot, L</creatorcontrib><creatorcontrib>Stodel, Ch</creatorcontrib><creatorcontrib>Thomas, J.-C</creatorcontrib><creatorcontrib>Utsuno, Y</creatorcontrib><creatorcontrib>Vanderheijden, W</creatorcontrib><creatorcontrib>Vermeulen, Nele</creatorcontrib><creatorcontrib>Vingerhoets, Pieter</creatorcontrib><creatorcontrib>Yagi, E</creatorcontrib><creatorcontrib>Yoshida, K</creatorcontrib><creatorcontrib>Yoshimi, A</creatorcontrib><collection>Lirias (KU Leuven Association)</collection><jtitle>Physics Letters B</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Shimada, K</au><au>Ueno, H</au><au>Neyens, Gerda</au><au>Asahi, K</au><au>Balabanski, D.L</au><au>Daugas, J.M</au><au>Depuydt, M</au><au>De Rydt, Marieke</au><au>Gaudefroy, L</au><au>Grevy, S</au><au>Hasama, Y</au><au>Ichikawa, Y</au><au>Kameda, D</au><au>Morel, P</au><au>Nagatomo, T</au><au>Perrot, L</au><au>Stodel, Ch</au><au>Thomas, J.-C</au><au>Utsuno, Y</au><au>Vanderheijden, W</au><au>Vermeulen, Nele</au><au>Vingerhoets, Pieter</au><au>Yagi, E</au><au>Yoshida, K</au><au>Yoshimi, A</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Erosion of N=20 shell in Al-33 investigated through the ground-state electric quadrupole moment</atitle><jtitle>Physics Letters B</jtitle><date>2012</date><risdate>2012</risdate><volume>714</volume><issue>2</issue><spage>246</spage><epage>250</epage><pages>246-250</pages><issn>0370-2693</issn><abstract>Electric quadrupole moment Q of the 33Al ground state has been measured by means of β-NMR spectroscopy using a spin-polarized 33Al beam produced in a projectile fragmentation reaction. The obtained Q moment, |Qexp(33Al)| = 132(16) emb, shows a significant excess from the prediction of shell model calculations within the sd shell. The result indicates sizable admixing of pf intruder configurations in the ground state, demonstrating that the N = 20 shell closure certainly erodes in 33Al, a nucleus
located on the border of the island of inversion. Comparison was made with predictions of the Monte
Carlo shell model, and also a particle-vibration coupling model treating the neutron pairing correlations
in the ground state of 33Al. Again, a significant admixture of pf intruder configurations to the 33Al ground
state was needed in both theoretical approaches to explain the observed large Q .</abstract><pub>ELSEVIER</pub></addata></record> |
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| title | Erosion of N=20 shell in Al-33 investigated through the ground-state electric quadrupole moment |
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