The Ground State Nilsson Quantum Numbers of the Odd-Odd Pr-138,Pr-140 Nuclei

Abstract

In this work, we have determined the Nilsson quantum numbers of the ground state of the odd-odd Pr-138,Pr-140 nucleus for the first time. To achieve it, several low energy neutron-proton two quasiparticle levels have been calculated in Pr-138,Pr-140 nuclei using deformed Woods-Saxon potential basis. The Gamov-Teller beta(+) decay transition matrix elements from these levels to the ground state of the neighbor Ce-138,Ce-140 nuclei and log ft values have been calculated. From the comparison of theoretical and experimental log ft values and neutron-proton K quantum numbers the ground state Nilsson quantum numbers of the odd-odd isotopes have been determined as {n[402]3/2-p[413]5/2}(1)+ for two isotopes.