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18 April 2024

» pubmed » pmid17930581

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Observation of Isomeric Decays in the r-Process Waiting-Point Nucleus 130Cd82
A Jungclaus ; L Cáceres ; M Górska ; M Pfützner ; S Pietri ; E Werner-Malento ; H Grawe ; K Langanke ; G Martínez-Pinedo ; F Nowacki ; A Poves ; J J Cuenca-García ; D Rudolph ; Z Podolyak ; P H Regan ; P Detistov ; S Lalkovski ; V Modamio ; J Walker ; P Bednarczyk ; P Doornenbal ; H Geissel ; J Gerl ; J Grebosz ; I Kojouharov ; N Kurz ; W Prokopowicz ; H Schaffner ; H J Wollersheim ; K Andgren ; J Benlliure ; G Benzoni ; A M Bruce ; E Casarejos ; B Cederwall ; F C L Crespi ; B Hadinia ; M Hellström ; R Hoischen ; G Ilie ; J Jolie ; A Khaplanov ; M Kmiecik ; R Kumar ; A Maj ; S Mandal ; F Montes ; S Myalski ; G S Simpson ; S J Steer ; S Tashenov ; O Wiel ;
Date:	28 Sep 2007
Journal:	Phys Rev Lett, 99 (13), 132501
Abstract:	The gamma decay of excited states in the waiting-point nucleus 130Cd82 has been observed for the first time. An 8;{+} two-quasiparticle isomer has been populated both in the fragmentation of a 136Xe beam as well as in projectile fission of 238U, making 130Cd the most neutron-rich N=82 isotone for which information about excited states is available. The results, interpreted using state-of-the-art nuclear shell-model calculations, show no evidence of an N=82 shell quenching at Z=48. They allow us to follow nuclear isomerism throughout a full major neutron shell from 98Cd50 to 130Cd82 and reveal, in comparison with 76Ni48 one major proton shell below, an apparently abnormal scaling of nuclear two-body interactions.
Source:	PubMed, pmid17930581
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