Physics – Nuclear Physics – Nuclear Theory
Scientific paper
2009-01-22
Phys.Rev.C79:044322,2009
Physics
Nuclear Physics
Nuclear Theory
15 pages, 13 figures
Scientific paper
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 $A\sim 130$ region, namely $^{126}Pr$, $^{134}Pr$ and $^{132}La$. 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.
Brant S.
Ganev H. G.
Georgieva A. I.
Ventura Alberto
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