Bulletin of the American Physical Society
5th Joint Meeting of the APS Division of Nuclear Physics and the Physical Society of Japan
Volume 63, Number 12
Tuesday–Saturday, October 23–27, 2018; Waikoloa, Hawaii
Session CM: Nuclear Structure A>140
7:00 PM–9:45 PM,
Wednesday, October 24, 2018
Hilton Room: Queen's 6
Chair: Atsuko Odahara, Osaka University
Abstract ID: BAPS.2018.HAW.CM.4
Abstract: CM.00004 : Shape coexistence in the Pb region: A systematic study of the even 188-200Hg with GRIFFIN
7:45 PM–8:00 PM
Shape coexistence is a unique phenomenon of the atomic core in which the nucleus assumes intrinsically different shapes in a small energy range. Two of the main model-independent probes used to study this phenomenon are the measurement of transition strengths, in particular B(E2) and ρ2(E0).
The n-deficient Pb region is characterized by clear examples of shape coexistence. A large isotope shift was observed in the light Hg isotopes that expresses the differently shaped potentials existing in these nuclei causing deformation . Only recently a COULEX experiment observed shape coexistence for 182-188Hg . Still, there are plenty of key elements not measured yet, especially in the transitional isotopes between the stable 200Hg and the midshell 190Hg.
A systematic study on the decay of the n-deficient 188-200mTl into Hg was done using GRIFFIN, at TRIUMF-ISAC. Key results of the experiment will be presented, with special emphasis on the lifetimes of the first 2+, 4+ and some non-yrast states. High statistics results on conversion-electrons, angular correlations and precise branching ratios, which greatly help in forming a complete picture of the band structure of these isotopes, will be discussed.
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To cite this abstract, use the following reference: http://meetings.aps.org/link/BAPS.2018.HAW.CM.4
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