%0 Journal Article
%T 133In: A Rosetta Stone for Decays of r-Process Nuclei
%A Xu, Z. Y. et al
%A Algora, A.
%A Morales, A. I.
%J Physical Review Letters
%D 2023
%V 131
%N 2
%I Amer Physical Soc
%@ 0031-9007
%G English
%F Xu_etal2023
%O WOS:001145547400003
%O exported from refbase (https://references.ific.uv.es/refbase/show.php?record=5921), last updated on Sun, 11 Feb 2024 18:56:57 +0000
%X The beta decays from both the ground state and a long-lived isomer of In-133 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 (log ft) 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 Sn-133. 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 Sn-132 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.
%R 10.1103/PhysRevLett.131.022501
%U https://arxiv.org/abs/2306.01842
%U https://doi.org/10.1103/PhysRevLett.131.022501
%P 022501-6pp