• S N Roy

      Articles written in Pramana – Journal of Physics

    • Transition strengths and shapes of 2-qp bands in 74Se and 76Kr

      G Mukherjee P Joshi S N Roy S Datta R P Singh S Muralithar R K Bhowmik

      More Details Abstract Fulltext PDF

      The lifetimes of the states of −ve parity 2-qp bands of N=40 nuclei 74Se and 76Kr were measured. The transition strengths and quadrupole moments, obtained from the lifetimes, show a large collectivity of such bands in both the nuclei. The alignment frequencies were calculated from Woods-Saxon cranking model. Previously suggested quasi proton nature of band 5 and 6 of 71Se were argued to be based on quasi neutron excitations. The total Routhian surface calculations suggest triaxial shapes with large +ve and −ve values of triaxiality parameter γ after proton and neutron alignments in these bands respectively.

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