Nuclear structure of Ce130-136 in IBM and DPPQ model

作者：Gupta J B^*; Kumar Krishna

来源：Nuclear Physics A, 2012, 882: 21-43.

DOI：10.1016/j.nuclphysa.2012.03.006

• Nuclear structure
• Ce130-136
• Microscopic theory and Interacting Boson Model
• Energy levels
• B(E2)

The level structures of Ce130-136 are analyzed with the available experimental data. The level energies. E2 moments and the B(E2) ratios for transitions from the K = 2 and 0(2) bands are compared with the values from the Dynamic Pairing plus Quadrupole model and the Interacting Boson Model-I, In Ce-130, the recently assigned 1.672 MeV I = (2, 3, 4)(+) state is tentatively associated with I = 4 on the basis of the predicted K-components and the decay mode. The 2.068 MeV I = (4, 5, 6)(+) state is associated with 5(2)(+) of this K = 4 band. In Ce-132, the 1932 keV I = 4 level is associated with K-pi = 0(2)(+) band. Variation of the nuclear structure with neutron number N is studied vis-a-vis the O(6) symmetry and critical point symmetries X(5) and E(5). The effect of filling of up-sloping Nilsson orbitals on the decreasing deformation with increasing N is illustrated.

• 出版日期2012-5-15