S. S. Ghugre

Nuclear structure of 9 4 , 9 5 Mo at high spins

The high-spin level structures of {sup 94,95}Mo (N=52,53) have been investigated via the {sup 65}Cu({sup 36}S, {alpha}p2n){sup 94}Mo and {sup 65}Cu({sup 36}S, {alpha}pn){sup 95}Mo reactions at 142 MeV. The level schemes have been extended up to spin J{approx}19{h_bar} and excitation energies E{sub x}{approx}12 MeV. Spherical shell-model calculations have been performed and compared with the experimental energy levels. The level structure of {sup 94}Mo exhibits a single-particle nature and the higher-angular-momentum states are dominated by the excitation of a g{sub 9/2} neutron across the N=50 shell gap. The level sequences observed in {sup 95}Mo have been interpreted on the basis of the spherical shell model and weak coupling of a d{sub 5/2} or a g{sub 7/2} neutron to the {sup 94}Mo core. {copyright} {ital 1998} {ital The American Physical Society}

Lifetime measurements of triaxial strongly deformed bands in {sup 163}Tm

With the Doppler Shift Attenuation Method, quadrupole transition moments Q{sub t} were determined for the two recently proposed triaxial strongly deformed (TSD) bands in {sup 163}Tm. The measured Q{sub t} values indicate that the deformation of these bands is larger than that of the yrast signature partners. However, the measured values are smaller than those predicted by theory. This observation appears to be valid for TSD bands in several nuclei of the region.

Nuclear structure of {sup 94,95}Mo at high spins

The high-spin level structures of {sup 94,95}Mo (N=52,53) have been investigated via the {sup 65}Cu({sup 36}S, {alpha}p2n){sup 94}Mo and {sup 65}Cu({sup 36}S, {alpha}pn){sup 95}Mo reactions at 142 MeV. The level schemes have been extended up to spin J{approx}19{h_bar} and excitation energies E{sub x}{approx}12 MeV. Spherical shell-model calculations have been performed and compared with the experimental energy levels. The level structure of {sup 94}Mo exhibits a single-particle nature and the higher-angular-momentum states are dominated by the excitation of a g{sub 9/2} neutron across the N=50 shell gap. The level sequences observed in {sup 95}Mo have been interpreted on the basis of the spherical shell model and weak coupling of a d{sub 5/2} or a g{sub 7/2} neutron to the {sup 94}Mo core. {copyright} {ital 1998} {ital The American Physical Society}

Nuclear structure of 94, Mo-95 at high spins

The high-spin level structures of {sup 94,95}Mo (N=52,53) have been investigated via the {sup 65}Cu({sup 36}S, {alpha}p2n){sup 94}Mo and {sup 65}Cu({sup 36}S, {alpha}pn){sup 95}Mo reactions at 142 MeV. The level schemes have been extended up to spin J{approx}19{h_bar} and excitation energies E{sub x}{approx}12 MeV. Spherical shell-model calculations have been performed and compared with the experimental energy levels. The level structure of {sup 94}Mo exhibits a single-particle nature and the higher-angular-momentum states are dominated by the excitation of a g{sub 9/2} neutron across the N=50 shell gap. The level sequences observed in {sup 95}Mo have been interpreted on the basis of the spherical shell model and weak coupling of a d{sub 5/2} or a g{sub 7/2} neutron to the {sup 94}Mo core. {copyright} {ital 1998} {ital The American Physical Society}