S. Bhowal

Bio: S. Bhowal is an academic researcher from Surendranath College. The author has contributed to research in topics: Yrast & Neutron. The author has an hindex of 4, co-authored 7 publications receiving 48 citations.

Evidence for octupole correlation and chiral symmetry breaking in Cs 124

Abstract: Lifetime measurements have been carried out using the Doppler shift attenuation method (DSAM) for the negative- and positive-parity bands built on $\ensuremath{\pi}{h}_{11/2}\ensuremath{\bigotimes}\ensuremath{ u}({d}_{5/2}{g}_{7/2})$ and $\ensuremath{\pi}{h}_{11/2}\ensuremath{\bigotimes}\ensuremath{ u}{h}_{11/2}$ configurations, respectively, in $^{124}\text{Cs}$. The reduced transition probabilities have been obtained for both the bands and are compared with the available theoretical calculations. The enhanced $B(E1)$ rates for the linking transitions between the bands with the above configurations suggest the existence of octupole correlations in $^{124}\text{Cs}$. The observed electromagnetic properties for the positive-parity bands in $^{124}\text{Cs}$ agree well with the characteristics pattern required for chiral symmetry breaking.

Levels in doubly odd 138Pr

Abstract: The band structures of the doubly odd 138Pr nucleus have been investigated using the 128Te(14N, 4n)138Pr reaction at a beam energy of 55-65 MeV. Altogether six distinct structures have been established, of which the lower part of the yrast band and two side bands were known from earlier works. The observed level properties of the members of the yrast band have been compared with theoretical calculations performed within the Particle Rotor Model (PRM) with axially symmetric core. The experimental branching ratios and B(M1)/B(E2) values when compared with the theoretical results of the PRM, suggest an oblate core.

Development of collective structures over noncollective excitations in Nd-139

Abstract: High-spin states in Nd-139 were investigated using the reaction Zr-96(Ca-48,5n) at a beam energy of 195 MeV and gamma-ray coincidences were acquired with the Euroball spectrometer. Apart from several dipole bands at medium excitation energy, three quadrupole bands have been observed at high spin. Linking transitions connecting two of the high-spin bands to low-energy states have been observed. Calculations based on the cranked-Nilsson-Strutinsky formalism have been used to assign configurations for the high-spin quadrupole bands.

Energy levels in 141Nd from fusion evaporation study

Abstract: The nucleus 141Nd has been investigated using two different heavy ion fusion evaporation reactions, namely 130Te(16O, 5n) at Elab = 80–85 MeV and 124Sn(24Mg,α3n) at Elab = 107 MeV, and the de-exciting gamma rays were detected using HPGe(GDA) and Clover detector (INGA) arrays, respectively. More than 30 new gamma transitions have been placed in the proposed level scheme, which has been extended up to 9 MeV excitation energy and spin parity values of 45/2−. Spin parity assignments have been made to most of the newly proposed levels. The structure up to approximately 6 MeV excitation energy and spin 31/2− can be explained using the shell model in a truncated basis. The levels with higher spin/energy cannot be described using even the full 50–82 shell, indicating the influence of neutron excitations across the shell gap in this mass region. One M1 band that has been observed is proposed to have a five quasiparticle configuration.