Experimental study of lifetimes of excited states in the Kπ= 0-octupole band and γ-vibrational band in 228Th

M.M.R. Chishti*, D. O'Donnell, G. Battaglia, M. Bowry, D.A. Jaroszynski, B.S. Nara Singh, M. Scheck, P. Spagnoletti, J. F. Smith

*Corresponding author for this work

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Abstract

Lifetimes of excited states in the Kπ = 0- octupole band and γ-vibrational of 228Th have been measured using the fast timing setup at the University of the West of Scotland (UWS). The setup consists of two cerium doped LaBr3 fast scintillators placed equidistant from the radioactive source 232Th. The states of interest have been analysed by doing the triple γ - γ - time coincidence analysis and using the fast-timing technique, mirror-symmetric centroid difference method. Octupole collectivity in 228Th nucleus is also investigated by calculating the enhanced electric dipole moments and transition rates in excited states followed by lifetime measurements in octupole band.

Original languageEnglish
Article number012122
Number of pages6
JournalJournal of Physics: Conference Series
Volume1643
Issue number1
DOIs
Publication statusPublished - 23 Dec 2020
Event27th International Nuclear Physics Conference, INPC 2019 - Glasgow, United Kingdom
Duration: 29 Jul 20192 Aug 2019

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