POSSIBLE SHAPE COEXISTENCE FOR 152Sm IN A REFLECTION-ASYMMETRIC RELATIVISTIC MEAN-FIELD APPROACH

摘要：

The potential energy surfaces of 152Sm and its neighboring isotopes are investigated in a constrained reflection-asymmetric relativistic meanfield approach with parameter set PK1. According to the calculations, 152Sm has a quadrupole-deformed minimum and an octupole-deformed minimum with similar energies. The low-lying 0+ states in the spectrum can be understood as the manifestation of shape coexistence in (β2 > β3) plane. Furthermore, the neutron gap with N = 88 and proton gaps with Z = 62 in the single-particle levels may be important for this coexistence.

关键词： Shape coexistence octupole degree of freedom relativisticmean-field

作者: W. ZHANG Z. P. LI S. Q. ZHANG J. MENG

作者单位: School of Electrical Engineering and Automation, Henan Polytechnic University, Jiaozuo 454003, PRC S School of Physical Science and Technology, Southwest University, Chongqing 400715, PRC State Key Laboratory of Nuclear Physics and Technology, School of Physics, Peking University, Beijin School of Physics and Nuclear Energy Engineering, Beihang University, Beijing 100191, PRC State Key

会议类型: 国际会议

会议名称: The 13th National Conference on Nuclear Structure(第十三届全国核结构研讨会暨第九次全国“核结构与量子力学专题讨论会

会议地点: 赤峰

会议语种:英文

页码: 234-239

在线出版日期: 2010-07-24（万方平台首次上网日期，不代表论文的发表时间）