Xu, ZY, Madurga, M, Grzywacz, R, King, TT, Algora, A, Andreyev, AN, Benito, J, Berry, T, Borge, MJG, Costache, C et al (show 39 more authors)
(2023)
133In: A Rosetta Stone for Decays of r-Process Nuclei.
Physical Review Letters, 131 (2).
022501-.
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Abstract
The β decays from both the ground state and a long-lived isomer of ^{133}In 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 ^{133}Sn. 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 ^{132}Sn 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.
| Item Type: | Article |
|---|---|
| Divisions: | Faculty of Science and Engineering > School of Physical Sciences |
| Depositing User: | Symplectic Admin |
| Date Deposited: | 25 Jul 2023 15:33 |
| Last Modified: | 04 Aug 2023 09:25 |
| DOI: | 10.1103/physrevlett.131.022501 |
| Related URLs: | |
| URI: | https://livrepository.liverpool.ac.uk/id/eprint/3171910 |
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