Microscopic analysis of spherical to y-soft shape transitions in Zn isotopes

摘要：

The rapid transition between spherical and γ-soft shapes in Zn isotopes in the mass A < 70 region, is analyzed using excitation spectra and collective wave functions obtained by diagonalization of a five-dimensional Hamiltonian for quadrupole vibrational and rotational degrees of freedom, with parameters determined by constrained self-consistent relativistic mean-field calculations for triaxial shapes. The microscopic potential energy surfaces, together with the characteristic collective observables, illustrate a rapid transition from near spherical shape at the N = 40 subshell, to y-soft deformed shapes for lighter isotopes. The calculated spectra display fingerprints of a second-order shape phase transition that can be approximately described by the E(5) analytic solution.

关键词： quantum phase transitions E(5) critical-point symmetry five-dimensional Hamiltonian

作者: SONG ChunYan LI ZhiPan VRETENAR Dario MENG Jie

作者单位: School of Physics and Nuclear Energy Engineering, Beihang University, Beijing 100191, China State Ke School of Physical Science and Technology, Southwest University, Chongqing 400715, China State Key L Physics Department, Faculty of Science, University of Zagreb, 10000 Zagreb, Croatia School of Physics and Nuclear Energy Engineering, Beihang University, Beijing 100191, China State Ke

会议类型: 国际会议

会议名称: 原子核磁矩国际研讨会

会议地点: 北京

会议语种:英文

页码: 222-226

在线出版日期: 2010-04-27（万方平台首次上网日期，不代表论文的发表时间）