CERN Accelerating science

Article
Report number	arXiv:2306.01842
Title	$^{133}$In: 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.) ; De Witte, H. (Leuven U.) ; Fijalkowska, A. (Rutgers U., Piscataway ; Warsaw U.) ; Fraile, L.M. (Madrid U.) ; Fynbo, H.O.U. (Aarhus U.) ; Gottardo, A. (Orsay, IPN) ; Halverson, C. (U. Tennessee, Knoxville) ; Harkness-Brennan, L.J. ; Heideman, J. (U. Tennessee, Knoxville) ; Huyse, M. (Leuven U.) ; Illana, A. (Jyvaskyla U.) ; Janiak, Ł. (Warsaw U. ; NCBJ, Lodz) ; Judson, D.S. (Liverpool U.) ; Korgul, A. (Warsaw U.) ; Kurtukian-Nieto, T. (CENBG, Gradignan) ; Lazarus, I. (Daresbury) ; Lică, R. (Bucharest, IFIN-HH ; CERN) ; Lozeva, R. (IJCLab, Orsay) ; Marginean, N. (Bucharest, IFIN-HH ; Leuven U.) ; Marginean, R. (Bucharest, IFIN-HH) ; Mazzocchi, C. (Bucharest, IFIN-HH ; Leuven U.) ; Mihai, C. (Bucharest, IFIN-HH ; Leuven U.) ; Mihai, R.E. (Bucharest, IFIN-HH) ; Morales, A.I. (Valencia U., IFIC ; Bucharest, IFIN-HH ; Leuven U.) ; Page, R.D. (Liverpool U.) ; Pakarinen, J. (Jyvaskyla U. ; Helsinki Inst. of Phys.) ; Piersa-Siłkowska, M. (Warsaw U. ; CERN) ; Podolyák, Zs. (Surrey U.) ; Sarriguren, P. (CSIC, Madrid) ; Singh, M. (U. Tennessee, Knoxville) ; Sotty, Ch. (Bucharest, IFIN-HH ; Leuven U.) ; Stepaniuk, M. (Warsaw U.) ; Tengblad, O. (CSIC, Madrid) ; Turturica, A. (Bucharest, IFIN-HH ; Leuven U.) ; Van Duppen, P. (Leuven U.) ; Vedia, V. (Madrid U.) ; Viñals, S. (CSIC, Madrid) ; Warr, N. (Cologne U.) ; Yokoyama, R. (U. Tennessee, Knoxville) ; Yuan, C.X. (SYSU, Guangzhou)
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 $\beta$ 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 $\beta$, $\gamma$, and neutron spectroscopy, the comparative partial half-lives (logft) have been measured for all their dominant $\beta$-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 $\beta$ 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 $\beta$-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 $\beta$ 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 $\beta$ decays in the rapid-neutron capture (r-) process.
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