{"id":164,"date":"2015-10-19T18:49:21","date_gmt":"2015-10-19T15:49:21","guid":{"rendered":"http:\/\/magneticmoments.info\/wp\/?p=164"},"modified":"2015-10-19T19:00:05","modified_gmt":"2015-10-19T16:00:05","slug":"paper-investigation-into-the-semimagic-nature-of-the-tin-isotopes-through-electromagnetic-moments","status":"publish","type":"post","link":"https:\/\/magneticmoments.info\/wp\/?p=164","title":{"rendered":"[Paper] Investigation into the semimagic nature of the tin isotopes through electromagnetic moments"},"content":{"rendered":"<p><em>Investigation into the semimagic nature of the tin isotopes through electromagnetic moments<\/em><\/p>\n<p>J.M. Allmond et al.<\/p>\n<p>DOI: <a href=\"http:\/\/dx.doi.org\/10.1103\/PhysRevC.92.041303\">10.1103\/PhysRevC.92.041303<\/a><\/p>\n<p>A complete set of electromagnetic moments, B(E2;0<sup>+<\/sup><sub>1<\/sub>\u21922<sup>+<\/sup><sub>1<\/sub>),Q(2<sup>+<\/sup><sub>1<\/sub>), and g(2<sup>+<\/sup><sub>1<\/sub>), have been measured from Coulomb excitation of semi magic <sup>112,114,116,118,120,122,124<\/sup>Sn (Z=50) on natural carbon and titanium targets. The magnitude of the B(E2) values, measured to a precision of \u223c4%, disagree with a recent lifetime study [Phys. Lett. B 695, 110 (2011)] that employed the Doppler-shift attenuation method. The B(E2) values show an overall enhancement compared with recent theoretical calculations and a clear asymmetry about midshell, contrary to naive expectations. A new static electric quadrupole moment, Q(2<sup>+<\/sup><sub>1<\/sub>), has been measured for <sup>114<\/sup>Sn. The static quadrupole moments are generally consistent with zero but reveal an enhancement near midshell; this had not been previously observed. The magnetic dipole moments are consistent with previous measurements and show a near monotonic decrease in value with neutron number. The g-factor measurements in <sup>112,114<\/sup>Sn establish the recoil-in-vacuum method for states with \u03c4\u223c0.5 ps and hence demonstrate that this method can be used for future g-factor measurements on proton-rich isotopes toward <sup>100<\/sup>Sn. Current theory calculations fail to reproduce the electromagnetic moments of the tin isotopes. The role of 2p-2h and 4p-4h intruders, which are lowest in energy at midshell and outside of current model spaces, needs to be investigated in the future.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Investigation into the semimagic nature of the tin isotopes through electromagnetic moments J.M. Allmond et al. DOI: 10.1103\/PhysRevC.92.041303 A complete set of electromagnetic moments, B(E2;0+1\u21922+1),Q(2+1), and g(2+1), have been measured from Coulomb excitation of semi magic 112,114,116,118,120,122,124Sn (Z=50) on natural&#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":[1,205],"tags":[116,117,118,217,218,119,120,47,121,220,6,219],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"jetpack_shortlink":"https:\/\/wp.me\/p6YIb0-2E","jetpack-related-posts":[{"id":61,"url":"https:\/\/magneticmoments.info\/wp\/?p=61","url_meta":{"origin":164,"position":0},"title":"[paper] Quadrupole moments of some nuclei around the mass of A\u223c80: 76,78,80,82,84Kr and neighboring Se isotope","date":"Apr 14, 2008","format":false,"excerpt":"Quadrupole moments of some nuclei around the mass of A\u223c80: 76,78,80,82,84Kr and neighboring Se isotope N. 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