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Identification of excited states in140Dy

 

作者: D. M. Cullen,   M. P. Carpenter,   C. N. Davids,   A. M. Fletcher,   S. J. Freeman,   R. V. F. Janssens,   F. Kondev,   C. J. Lister,   L. K. Pattison,   D. Seweryniak,   J. F. Smith,   A. Bruce,   K. Abu Saleem,   I. Ahmad,   A. Heinz,   T. L. Khoo,   E. F. Moore,   G. Mukherjee,   C. Wheldon,   A. Woehr,  

 

期刊: AIP Conference Proceedings  （AIP Available online 1903）
卷期: Volume 681, issue 1  

页码: 187-192

 

ISSN:0094-243X

 

年代: 1903

 

DOI:10.1063/1.1615173

 

出版商: AIP

 

数据来源: AIP

 

摘要:

Excited structures in the proton‐rich nucleus140Dy were established following the decay of a 7.3±1.5 &mgr;s,K&pgr;= 8−isomer. The isomer decays into the yrast line at the 8+state, revealing a rotational band with a deduced deformation of &bgr;2= 0.24(3). The isotope140Dy is the daughter of the deformed proton emitter141Ho. The new information obtained here supports the role of deformation in proton emission and the previous assignments of single‐particle configurations to the two proton emitting states in141Ho. In addition, the reduced hindrance factor measured for the isomer is consistent with the trend observed in theN= 74 isotones and shows no deviation which could be attributed to the proximity of140Dy to the proton drip line. © 2003 American Institute of Physics

 

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