{"id":136,"date":"2012-08-14T12:46:00","date_gmt":"2012-08-14T09:46:00","guid":{"rendered":"http:\/\/magneticmoments.info\/wp\/?p=136"},"modified":"2013-06-04T12:47:00","modified_gmt":"2013-06-04T09:47:00","slug":"paper-erosion-of-n20-shell-in-33al-investigated-through-the-ground-state-electric-quadrupole-moment","status":"publish","type":"post","link":"https:\/\/magneticmoments.info\/wp\/?p=136","title":{"rendered":"[paper] Erosion of N=20 shell in <sup>33<\/sup>Al investigated through the ground-state electric quadrupole moment"},"content":{"rendered":"<p><em>Erosion of N=20 shell in <sup>33<\/sup>Al investigated through the ground-state electric quadrupole moment<\/em><\/p>\n<p>K. Shimada et al.<\/p>\n<p>doi: <a href=\"http:\/\/dx.doi.org\/10.1016\/j.physletb.2012.07.030\">10.1016\/j.physletb.2012.07.030<\/a><\/p>\n<p>Electric quadrupole moment Q of the  ground state has been measured by means of &beta;-NMR spectroscopy using a spin-polarized  beam produced in a projectile fragmentation reaction. The obtained Q moment, |Q<sub>exp<\/sub>(<sup>33<\/sup>Al)|=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 <sup>33<\/sup>Al, 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 <sup>33<\/sup>Al. Again, a significant admixture of pf intruder configurations to the  ground state was needed in both theoretical approaches to explain the observed large Q.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Erosion of N=20 shell in 33Al investigated through the ground-state electric quadrupole moment K. Shimada et al. doi: 10.1016\/j.physletb.2012.07.030 Electric quadrupole moment Q of the ground state has been measured by means of &beta;-NMR spectroscopy using a spin-polarized beam produced&#46;&#46;&#46;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"jetpack_post_was_ever_published":false,"jetpack_publicize_message":"","jetpack_is_tweetstorm":false,"jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":false,"jetpack_social_options":{"image_generator_settings":{"template":"highway","enabled":false}}},"categories":[3],"tags":[192,30,32,29,31],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"jetpack_shortlink":"https:\/\/wp.me\/p6YIb0-2c","jetpack-related-posts":[{"id":18,"url":"https:\/\/magneticmoments.info\/wp\/?p=18","url_meta":{"origin":136,"position":0},"title":"[paper] Ground-state electric quadrupole moment of 31Al","date":"Feb 18, 2009","format":false,"excerpt":"Ground-state electric quadrupole moment of 31Al D. 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A\u2026","rel":"","context":"In &quot;experiment&quot;","img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]}],"_links":{"self":[{"href":"https:\/\/magneticmoments.info\/wp\/index.php?rest_route=\/wp\/v2\/posts\/136"}],"collection":[{"href":"https:\/\/magneticmoments.info\/wp\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/magneticmoments.info\/wp\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/magneticmoments.info\/wp\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/magneticmoments.info\/wp\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=136"}],"version-history":[{"count":1,"href":"https:\/\/magneticmoments.info\/wp\/index.php?rest_route=\/wp\/v2\/posts\/136\/revisions"}],"predecessor-version":[{"id":137,"href":"https:\/\/magneticmoments.info\/wp\/index.php?rest_route=\/wp\/v2\/posts\/136\/revisions\/137"}],"wp:attachment":[{"href":"https:\/\/magneticmoments.info\/wp\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=136"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/magneticmoments.info\/wp\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=136"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/magneticmoments.info\/wp\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=136"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}