Bulletin of the American Physical Society
Fall 2022 Meeting of the APS Division of Nuclear Physics
Volume 67, Number 17
Thursday–Sunday, October 27–30, 2022; Time Zone: Central Daylight Time, USA; New Orleans, Louisiana
Session LH: Nuclear Reactions: Heavy-Ions/Rare isotope Beams III
2:00 PM–3:48 PM,
Saturday, October 29, 2022
Hyatt Regency Hotel
Room: Celestin H
Chair: Alan McIntosh, Texas A&M University
Abstract: LH.00007 : High-spin spectroscopy of 64Cu*
3:12 PM–3:24 PM
Presenter:
Antonella Saracino
(University of North Carolina at Chapel Hill)
Authors:
Antonella Saracino
(University of North Carolina at Chapel Hill)
Akaa D Ayangeakaa
(University of North Carolina at Chapel H)
Nirupama Sensharma
(University of North Carolina at Chapel Hill)
Robert V Janssens
(University of North Carolina at Chapel Hill)
Q. B Chen
(East China Normal University, Shanghai)
Michael P Carpenter
(Argonne National Laboratory)
Partha Chowdhury
(University of Massachusetts Lowell)
Alexandra Gade
(Michigan State University)
C. R Hoffmann
(Argonne National Laboratory)
Filip G Kondev
(Argonne National Laboratory)
Torben Lauritsen
(Argonne National Laboratory)
Elizabeth McCutchan
(Brookhaven National Laboratory)
Andrew Rogers
(University of Massachusetts Lowell)
Dariusz Seweryniak
(Argonne National Laboratory)
Medium and high-spin structures in 64Cu were investigated by means of the 26Mg(48Ca, αp5nγ) multinucleon transfer reaction. The experiment was performed at the ATLAS accelerator facility at Argonne National Laboratory using the Gammasphere multidetector array and the fragment mass analyzer (FMA). Two high-spin, quasi-rotational bands consisting of stretched-E2 transitions were observed in coincidence with the known low-spin structure. These bands share remarkable similarities with super-deformed bands observed in the region. In addition, a regular dipole sequence with E2 crossover transitions was observed as well. A general discussion of the observed structures, complemented by theoretical calculations, will be presented in the context of shell structure evolution and collectivity in the A ~ 60 region.
*This work was supported in part by Grants No. DEFG02-97ER41041 (UNC), No. DE-FG02-97ER41033 (TUNL) and by the U.S. DOE, Office of Nuclear Physics, under Contract No. DE-AC02-06CH11357 and Grants Nos. DE-FG02-94ER40834 and DE- FG02-08ER41556, by the NSF under Contract No. PHY-0606007, and by the UK Science and Technology Facilities Council (STFC).
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