CERN Accelerating science

Article
Report number arXiv:2306.01842
Title 133In: A Rosetta Stone for decays of r-process nuclei
Author(s) Xu, Z.Y. (U. Tennessee, Knoxville) ; Madurga, M. (U. Tennessee, Knoxville) ; Grzywacz, R. (U. Tennessee, Knoxville ; Oak Ridge) ; King, T.T. (U. Tennessee, Knoxville ; Oak Ridge) ; Algora, A. (Valencia U., IFIC ; Debrecen, Inst. Nucl. Res.) ; Andreyev, A.N. (York U., England ; JAERI, Tokai) ; Benito, J. (Madrid U.) ; Berry, T. (Surrey U.) ; Borge, M.J.G. (CSIC, Madrid) ; Costache, C. (Bucharest, IFIN-HH ; Leuven U.) Prikaži svih 49 autora
Publication 2023-07-14
Imprint 2023-06-02
Number of pages 8
In: Phys. Rev. Lett. 131 (2023) 022501
DOI 10.1103/PhysRevLett.131.022501 (publication)
Subject category nucl-th ; Nuclear Physics - Theory ; nucl-ex ; Nuclear Physics - Experiment
Accelerator/Facility, Experiment CERN ISOLDE
Abstract The β decays from both the ground state and a long-lived isomer of 133In were studied at the ISOLDE Decay Station (IDS). With a hybrid detection system sensitive to β, γ, and neutron spectroscopy, the comparative partial half-lives (logft) have been measured for all their dominant β-decay channels for the first time, including a low-energy Gamow-Teller transition and several First-Forbidden (FF) transitions. Uniquely for such a heavy neutron-rich nucleus, their β decays selectively populate only a few isolated neutron unbound states in 133Sn. Precise energy and branching-ratio measurements of those resonances allow us to benchmark β-decay theories at an unprecedented level in this region of the nuclear chart. The results show good agreement with the newly developed large-scale shell model (LSSM) calculations. The experimental findings establish an archetype for the β decay of neutron-rich nuclei southeast of 132Sn and will serve as a guide for future theoretical development aiming to describe accurately the key β decays in the rapid-neutron capture (r-) process.
Copyright/License publication: © 2023-2025 authors (License: CC-BY-4.0)
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 Zapis kreiran 2023-06-22, zadnja izmjena 2024-05-08


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