{"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":103,"url":"https:\/\/magneticmoments.info\/wp\/?p=103","url_meta":{"origin":144,"position":5},"title":"[paper] Nuclear Charge Radii of 21-32Mg","date":"Jan 26, 2012","format":false,"excerpt":"Nuclear Charge Radii of 21-32Mg D.T. Yordanov et al. doi: 10.1103\/PhysRevLett.108.042504 Charge radii of all magnesium isotopes in the sd shell have been measured, revealing evolution of the nuclear shape throughout two prominent regions of assumed deformation centered on 24Mg and 32Mg. A striking correspondence is found between the nuclear\u2026","rel":"","context":"In &quot;g factor&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}]}}