학술논문
Shape coexistence in the neutron-deficient lead region: A systematic study of lifetimes in the even-even $^{188-200}$Hg with GRIFFIN
Document Type
Working Paper
Author
Olaizola, B.; Garnsworthy, A. B.; Ball, G. C.; Bernier, N.; Bowry, M.; Caballero-Folch, R.; Dillmann, I.; Georges, S.; Hackman, G.; Smallcombe, J.; Smith, J. K.; Southall, D.; Timakova, E.; Umashankar, R.; Ali, F. A.; Bidaman, H.; Bildstein, V.; Burbadge, C.; Varela, A. Diaz; Dunlop, R. A.; Dunlop, M.; Garrett, P. E.; Hadina, B.; Jigmeddorj, B.; Kisliuk, D.; Laffoley, A.; MacLean, A.; Muecher, D.; Radich, A.; Rand, E. T.; Svensson, C. E.; Turko, J.; Zidar, T.; Andreoiu, C.; Garcia, F.; Pore, J. L.; Rizwan, U.; Starosta, K.; Voss, P.; Williams, J.
Source
Subject
Language
Abstract
Lifetimes of $2^+_1$ and $4^+_1$ states, as well as some negative-parity and non-yrast states, in $^{188-200}$Hg were measured using $\gamma-\gamma$ electronic fast timing techniques with the LaBr$_3$(Ce) detector array of the GRIFFIN spectrometer. The excited states were populated in the $\epsilon/\beta^+$-decay of $J^\pi =7^+/2^-$ $^{188-200}$Tl produced at the TRIUMF-ISAC facility. The deduced B(E2) values are compared to different interacting boson model predictions. The precision achieved in this work over previous ones allows for a meaningful comparison with the different theoretical models of these transitional Hg isotopes, which confirms the onset of state mixing in $^{190}$Hg.