Β Decay of the Ground State and of a Low-Lying Isomer in Bi216

B. Andel,A. N. Andreyev,A. Blazhev,R. Lica,H. Naidja,M. Stryjczyk,P. Van Duppen,A. Algora,S. Antalic,A. Barzakh,J. Benito,G. Benzoni, T. Berry, M. J. G. Borge,K. Chrysalidis,C. Clisu,C. Costache,J. G. Cubiss,H. De Witte, D. V. Fedorov,V. N. Fedosseev,L. M. Fraile, H. O. U. Fynbo,P. T. Greenlees,L. J. Harkness-Brennan,M. Huyse,A. Illana, J. Jolie,D. S. Judson,J. Konki,I. Lazarus,M. Madurga,N. Marginean,R. Marginean,B. A. Marsh,C. Mihai, P. L. Molkanov,P. Mosat, J. R. Murias,E. Nacher, A. Negret,R. D. Page,S. Pascu,A. Perea, V. Pucknell,P. Rahkila,E. Rapisarda,K. Rezynkina,V. Sanchez-Tembleque,K. Schomacker, M. D. Seliverstov,C. Sotty,L. Stan,C. Suerder,O. Tengblad,V. Vedia,S. Vinals,R. Wadsworth,N. Warr

PHYSICAL REVIEW C（2024）

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摘要

A detailed β-decay study of the low- and high-spin states in Bi216 has been performed at the ISOLDE Decay Station at the CERN-ISOLDE facility. In total, 48 new levels and 83 new transitions in the β-decay daughter Po216 were identified. Shell-model calculations for excited states in Bi216 and Po216 were performed using the H208 and the modified Kuo-Herling particle effective interactions. Based on the experimental observations and the shell-model calculations, the most likely spin and parity assignments for the β-decaying states in Bi216 are (3−) and (8−), respectively. Published by the American Physical Society 2024

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