{"id":144,"date":"2008-01-10T14:36:00","date_gmt":"2008-01-10T11:36:00","guid":{"rendered":"http:\/\/magneticmoments.info\/wp\/?p=144"},"modified":"2013-06-04T13:39:51","modified_gmt":"2013-06-04T10:39:51","slug":"paper-g-factor-of-the-exotic-n21-isotope-34al-probing-the-n20-and-n28-shell-gaps-at-the-border-of-the-island-of-inversion","status":"publish","type":"post","link":"https:\/\/magneticmoments.info\/wp\/?p=144","title":{"rendered":"[paper] g factor of the exotic N=21 isotope <sup>34<\/sup>Al: probing the N=20 and N=28 shell gaps at the border of the &quot;island of inversion&quot;"},"content":{"rendered":"<p><em>g factor of the exotic N=21 isotope <sup>34<\/sup>Al: probing the N=20 and N=28 shell gaps at the border of the &quot;island of inversion&quot;<\/em><\/p>\n<p>P. Himpe et al.<\/p>\n<p>doi: <a href=\"http:\/\/dx.doi.org\/10.1016\/j.physletb.2007.11.017\">10.1016\/j.physletb.2007.11.017<\/a><\/p>\n<p>For the first time the g factor of an isotope beyond N=20 near the &quot;island of inversion&quot; has been measured. A <sup>34<\/sup>Al radioactive beam was produced in a one-neutron pickup reaction on a <sup>36<\/sup>S primary beam at 77.5 MeV\/u, providing a large spin-polarization for application of the &beta;-Nuclear Magnetic Resonance (&beta;-NMR) method. The measured g factor of <sup>34<\/sup>Al, |g|=0.539(2), combined with results from earlier &beta;-decay studies, allows to firmly assign a ground state spin\/parity 4<sup>\u2212<\/sup>. Comparison to large scale shell model calculations reveals that a dominant amount of intruder components is needed in the <sup>34<\/sup>Al wave function to account for the observed large magnetic moment \u03bc=(+)2.156(16)&mu;<sub>N<\/sub>. This reveals Z=13 to be a true &quot;transition number&quot; between the normal Z=14 Si isotopes and the abnormal Z=12 Mg isotopes. The sensitivity of this odd\u2013odd ground state dipole moment to the N=20, as well as the N=28 gap, reveals that both are significantly reduced, despite Z=13 being outside the conventional island of inversion.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>g factor of the exotic N=21 isotope 34Al: probing the N=20 and N=28 shell gaps at the border of the &quot;island of inversion&quot; P. Himpe et al. doi: 10.1016\/j.physletb.2007.11.017 For the first time the g factor of an isotope beyond&#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":[3,1],"tags":[199,30,61,32,31],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"jetpack_shortlink":"https:\/\/wp.me\/p6YIb0-2k","jetpack-related-posts":[{"id":36,"url":"https:\/\/magneticmoments.info\/wp\/?p=36","url_meta":{"origin":144,"position":0},"title":"[paper] g factor of the 44Cl ground state: Probing the reduced Z=16 and N=28 gaps","date":"Mar 19, 2010","format":false,"excerpt":"g factor of the 44Cl ground state: Probing the reduced Z=16 and N=28 gaps M. De Rydt et al. doi: 10.1103\/PhysRevC.81.034308 The g factor of the 44Cl ground state is measured at the LISE fragment separator at the Grand Accl\u00e9rateur National d\u2019Ions Lourds (GANIL) using the \u03b2 nuclear magnetic resonance\u2026","rel":"","context":"In &quot;experiment&quot;","img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":18,"url":"https:\/\/magneticmoments.info\/wp\/?p=18","url_meta":{"origin":144,"position":1},"title":"[paper] Ground-state electric quadrupole moment of 31Al","date":"Feb 18, 2009","format":false,"excerpt":"Ground-state electric quadrupole moment of 31Al D. Nagae et al. The ground-state electric quadrupole moment of 31Al(I\u03c0=5\/2+,T1\/2=644(25) ms) has been measured by means of \u03b2-ray-detected nuclear magnetic resonance spectroscopy using a spin-polarized 31Al beam produced in the projectile fragmentation reaction. The obtained Q moment, |Qexp(31Al)|=112(32) e\u2002mb, is in agreement with\u2026","rel":"","context":"In &quot;experiment&quot;","img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":136,"url":"https:\/\/magneticmoments.info\/wp\/?p=136","url_meta":{"origin":144,"position":2},"title":"[paper] Erosion of N=20 shell in 33Al investigated through the ground-state electric quadrupole moment","date":"Aug 14, 2012","format":false,"excerpt":"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 \u03b2-NMR spectroscopy using a spin-polarized beam produced in a projectile fragmentation reaction. The obtained Q moment, |Qexp(33Al)|=132(16)\u2026","rel":"","context":"In &quot;experiment&quot;","img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":145,"url":"https:\/\/magneticmoments.info\/wp\/?p=145","url_meta":{"origin":144,"position":3},"title":"[paper] Magnetic moments of 3013Al17 and 3213Al19","date":"Jun 2, 2005","format":false,"excerpt":"Magnetic moments of 3013Al17 and 3213Al19 H. Ueno et al. doi: 10.1016\/j.physletb.2005.04.037 Ground-state magnetic moments of 30Al and 32Al were measured with the \u03b2-NMR method using radioactive-isotope beams spin-polarized in the projectile-fragmentation reaction. Polarization of sizes |P|=0.5\u20131% were obtained in spite of the large numbers of nucleons that are removed\u2026","rel":"","context":"In &quot;g factor&quot;","img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":10,"url":"https:\/\/magneticmoments.info\/wp\/?p=10","url_meta":{"origin":144,"position":4},"title":"[paper] Nuclear spins, magnetic moments, and quadrupole moments of Cu isotopes from N=28 to N=46: Probes for core polarization effects","date":"Dec 17, 2010","format":false,"excerpt":"Nuclear spins, magnetic moments, and quadrupole moments of Cu isotopes from N=28 to N=46: Probes for core polarization effects P. Vingerhoets et al. doi: 10.1103\/PhysRevC.82.064311 Measurements of the ground-state nuclear spins and magnetic and quadrupole moments of the copper isotopes from 61Cu up to 75Cu are reported. The experiments were\u2026","rel":"","context":"In &quot;experiment&quot;","img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":39,"url":"https:\/\/magneticmoments.info\/wp\/?p=39","url_meta":{"origin":144,"position":5},"title":"[paper] Magnetic moment of 104Agm and the hyperfine magnetic field of Ag in Fe using nuclear magnetic resonance on oriented nuclei","date":"May 28, 2010","format":false,"excerpt":"Magnetic moment of 104Agm and the hyperfine magnetic field of Ag in Fe using nuclear magnetic resonance on oriented nuclei V.V. Golovko et al. doi: 10.1103\/PhysRevC.81.054323 Nuclear magnetic resonance (NMR\/ON) measurements with \u03b2- and \u03b3-ray detection have been performed on oriented 104Agg,m nuclei with the NICOLE 3He-4He dilution refrigerator setup\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\/144"}],"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=144"}],"version-history":[{"count":0,"href":"https:\/\/magneticmoments.info\/wp\/index.php?rest_route=\/wp\/v2\/posts\/144\/revisions"}],"wp:attachment":[{"href":"https:\/\/magneticmoments.info\/wp\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=144"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/magneticmoments.info\/wp\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=144"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/magneticmoments.info\/wp\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=144"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}