New description of the doublet bands in doubly odd nuclei

作者：Ganev H G^*; Georgieva A I; Brant S; Ventura A

来源：Physical Review C, 2009, 79(4): 044322.

DOI：10.1103/PhysRevC.79.044322

The experimentally observed Delta I = 1 doublet bands in some odd-odd nuclei are analyzed within the orthosymplectic extension of the interacting vector boson model (IVBM). A new, purely collective interpretation of these bands is given on the basis of the obtained boson-fermion dynamical symmetry of the model. It is illustrated by its application to three odd-odd nuclei from the A similar to 130 region, namely Pr-126, Pr-134, and La-132. The theoretical predictions for the energy levels of the doublet bands as well as E2 and M1 transition probabilities between the states of the yrast band in the last two nuclei are compared with experiment and the results of other theoretical approaches. The obtained results reveal the applicability of the orthosymplectic extension of the IVBM.

• 出版日期2009-4