Lifetime measurements in the yrast band of 187 Hg

Abstract Lifetimes of excited nuclear states in 187 Hg have been measured using the 159 Tb ( 32 S, p3n ) 187 Hg reaction at a beam energy of 154 MeV at the Inter University Accelerator Center, Delhi. In the experiment, the lifetimes of the five lowest yrast states have been determined using the reco...

Full description

Saved in:
Bibliographic Details
Published inPhysica scripta Vol. 99; no. 6; p. 65308
Main Authors Bhushan, Ravi, Pandey, Anand, Rohilla, Aman, Kumar, A, Govil, I M, Chamoli, S K
Format Journal Article
LanguageEnglish
Published 01.06.2024
Online AccessGet full text

Cover

More Information
Summary:Abstract Lifetimes of excited nuclear states in 187 Hg have been measured using the 159 Tb ( 32 S, p3n ) 187 Hg reaction at a beam energy of 154 MeV at the Inter University Accelerator Center, Delhi. In the experiment, the lifetimes of the five lowest yrast states have been determined using the recoil distance Doppler-shift (RDM) method. The extracted transition quadrupole moments show a sharp increase with increasing level spin, indicating a major shape transition happening in this nucleus. For a better insight into the predicted shape coexistence picture in 187 Hg nucleus, the experimental results are compared with the results of the total Routhian surface calculations. The results indicate the shifting of deformed structures from weakly prolate at low-spins to strongly prolate at high spins in 187 Hg nucleus.
ISSN:0031-8949
1402-4896
DOI:10.1088/1402-4896/ad48ca