Bulletin of the American Physical Society
6th Joint Meeting of the APS Division of Nuclear Physics and the Physical Society of Japan
Sunday–Friday, November 26–December 1 2023; Hawaii, the Big Island
Session L10: Nuclear Structure V
9:00 AM–11:30 AM,
Friday, December 1, 2023
Hilton Waikoloa Village
Room: Kohala 3
Chair: Nori Aoi
Abstract: L10.00008 : Structure of beta-decaying isomers in deformed, odd-odd 102,104Nb nuclei**
10:45 AM–11:00 AM
Presenter:
Filip G Kondev
(Argonne National Laboratory)
Authors:
Filip G Kondev
(Argonne National Laboratory)
Soumen Nandi
(Argonne National Laboratory)
Michael P Carpenter
(Argonne National Laboratory)
Jason A Clark
(Argonne National Laboratory)
Patrick A Copp
(Argonne National Laboratory)
Daryl J Hartley
(US Naval Academy)
Heshani Jayatissa
(Los Alamos National Laboratory)
Torben Lauritsen
(Argonne National Laboratory)
Scott T Marley
(Louisiana State University)
Graeme Morgan
(Louisiana State University)
Gopal Mucharjee
(VECC, Kolkata)
Claus Mueller Gatermann
(Argonne National Laboratory)
Walter Reviol
(ANL)
Daniel Santiago-Gonzalez
(Argonne National Laboratory)
Guy Savard
(Argonne National Laboratory)
Dariusz Seweryniak
(Argonne National Laboratory)
Jin Wu
(Argonne National Laboratory)
We have initiated a dedicated beta-decay spectroscopy program at Argonne National Laboratory, by combining the CARIBU radioactive beam facility with the newly developed Gammasphere decay station. The focus of the present studies was on deformed, odd-odd 102,104Nb nuclei, where b- decays of both the ground states and excited spin-traps isomers were investigated. Because of the large spin difference between the ground states and the isomers, a variety of structures in the daughter nuclei were selectively populated and characterized, which in turn provided information about the structure of the parent states. The new data are compared with predictions from deformed, multi-quasiparticle blocking calculations and systematics of known single-particle states in the region, which allowed to elucidate the structure of the beta-decaying states. Differences with previous studies, including recent results obtained from the low-resolution total gamma-ray absorption technique, will also be discussed.
** Work supported by the U.S. Department of Energy, Office of Science, Office of Nuclear Physics, under Contracts No. DE-AC02-06CH11357 (ANL), DE‐SC0021315 (LSU), by the National Nuclear Security Administration, Office of Defense Nuclear Nonproliferation R & D (NA-22) and by the National Science Foundation PHY-1907409.
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