NUCLEAR STRUCTURES OF THE NEUTRON-RICH NUCLEI AROUND A=120

作者：Luo Y X; Liu S H; Hamilton J H; Ramayya A V; Rasmussen J O; Hwang J K; Brewer N T; Zhu S J

来源：Romanian Journal of Physics, 2012, 57(1-2): 309-329.

• Neutron-rich nuclei
• Spontaneous fission
• Triaxiality

Analysis of high statistics triple coincidence fission gamma data from Cf-252 at Gammasphere including angular correlations yielded well-expanded high-spin level schemes with more complete and reliable spin/parity assignments for Cd-118,Cd-120,Cd-122 and Rh-114,Rh-115. Both the quasi-particle/hole couplings and quasi-rotational degrees of freedom are implied to play roles in these Cd isotopes. Evidence for triaxial shapes and octupole components in the Cd isotopes is presented. These Cd isotopes may have triaxial deformations implied by the Frauendorf SCTAC model calculations. High-spin level schemes of Rh-114,Rh-115 have been established for the first time. The existence of a relatively large signature splitting and an yrare band shows typical features of a triaxially deformed nucleus. This paper is dedicated to our long-time colleague Prof. Aureliu Sandulescu on the occasion of his 80th birthday.

• 出版日期2012
• 单位清华大学