Evolution of collectivity in 72Kr: evidence for rapid shape transition.
Phys Rev Lett
; 112(14): 142502, 2014 Apr 11.
Article
em En
| MEDLINE
| ID: mdl-24765947
ABSTRACT
The transition rates from the yrast 2+ and 4+ states in the self-conjugate 72Kr nucleus were studied via lifetime measurements employing the GRETINA array with a novel application of the recoil-distance method. The large collectivity observed for the 4+â2+ transition suggests a prolate character of the excited states. The reduced collectivity previously reported for the 2+â0+ transition was confirmed. The irregular behavior of collectivity points to the occurrence of a rapid oblate-prolate shape transition in 72Kr, providing stringent tests for advanced theories to describe the shape coexistence and its evolution.
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Base de dados:
MEDLINE
Idioma:
En
Ano de publicação:
2014
Tipo de documento:
Article