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 EG: Nuclear Structure A=100-140
7:00 PM–9:30 PM,
Thursday, October 25, 2018
Hilton
Room: King's 3
Chair: Kathrin Wimmer, The University of Tokyo
Abstract ID: BAPS.2018.HAW.EG.2
Abstract: EG.00002 : Chiral vibrations and collective bans in 104,106Mo*
7:15 PM–7:30 PM
Presenter:
Brooks M Musangu
(Vanderbilt Unversity)
Authors:
Brooks M Musangu
(Vanderbilt Unversity)
Enhong Wang
(Vanderbilt Univ)
Joseph H Hamilton
(Vanderbilt Univ)
Stefan Frauendorf
(Univ of Notre Dame)
Gowhar Bhat
(Govt. Degree College Kulgam)
Javid Sheikh
(Cluster University Srinagar)
Christopher J Zachary
(Vanderbilt Univ)
Jonathan M Eldridge
(Vanderbilt Univ)
Akunuri V Ramayya
(Vanderbilt Univ)
John Rasmussen
(Lawrence Berkeley National Laboratory)
Yixiao Luo
(Lawrence Berkeley National Laboratory)
Gurgen M Ter-Akopian
(Joint Institute for Nuclear Research)
Yuri Oganessian
(Joint Institute for Nuclear Research)
Shengjiang Zhu
(Tsinghua University)
New theoretical calculations of 104Mo and 106Mo have been conducted. Reduced transition probabilities for the proposed chiral bands in both isotopes have been calculated from TPSM and are found in good agreement with the experimental data. High spin states of the neutron-rich triaxial 104Mo nucleus have been reinvestigated by analyzing both γ-γ-γ and γ-γ-γ-γ coincidence data in the spontaneous fission of 252Cf with Gammasphere. A new ΔI=1 band was discovered. The new band is proposed to have a tentative 5− band head and form a class of chiral doublets with another 4− band previously found by our group. Angular correlation measurements have been performed to determine spin and parity of the 4− chiral band head. The energies of the two sets of chiral bands are very similar to the chiral bands observed in 106Mo, e.g. the two 5− levels in 104Mo are at 2211.9 and 2276.8 keV with ΔE=65 keV and in 106Mo, 1952.4 and 2090.6 keV with ΔE=138 keV. Now at every spin 5−, 6−, 7−, 8−, the separation energies of the same spin states are about a factor of two smaller than in 106Mo. This indicates even better agreement with expectations for two sets of chiral bands.
*The work at Vanderbilt University is supported by the US Department of Energy under Grant No. DE-FG05-88ER40407.
To cite this abstract, use the following reference: http://meetings.aps.org/link/BAPS.2018.HAW.EG.2
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