SYSTEMATIC ANALYSIS OF SHAPE EVOLUTION FOR Mo ISOTOPES WITH RELATIVISTIC MEAN FIELD THEORY

摘要

The systematic investigation of shape evolution between spherical U(5) and gamma-unstable O(6) for Mo isotopes has been carried out by the microscopic quadrupole constrained relativistic mean field model plus BCS method with all the most used interactions, i.e. PK1, NL3, TM1 and NLSH. The calculated potential energy surfaces show a clear shape evolution for the even-even Mo isotopes with N = 50 similar to 64 and Mo-94 is suggested to be the gamma-unstable nucleus, which is favored by the experimental data. Similar conclusion is also drawn from the neutron single particle spectra.