The experimentally observed ΔI=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~130 region, namely Pr126, Pr134, and La132. 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. © 2009 The American Physical Society.
All Science Journal Classification (ASJC) codes
- Nuclear and High Energy Physics
Ganev, H. G., Georgieva, A. I., Brant, S., & Ventura, A. (2009). New description of the doublet bands in doubly odd nuclei. Physical Review C - Nuclear Physics, 79(4), -. . https://doi.org/10.1103/PhysRevC.79.044322