TY  - JOUR
AU  - Xu, Z. Y. et al
AU  - Algora, A.
AU  - Morales, A. I.
PY  - 2023
DA  - 2023//
TI  - 133In: A Rosetta Stone for Decays of r-Process Nuclei
T2  - Phys. Rev. Lett.
JO  - Physical Review Letters
SP  - 022501
EP  - 6pp
VL  - 131
IS  - 2
PB  - Amer Physical Soc
AB  - 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.
SN  - 0031-9007
UR  - https://arxiv.org/abs/2306.01842
UR  - https://doi.org/10.1103/PhysRevLett.131.022501
DO  - 10.1103/PhysRevLett.131.022501
LA  - English
N1  - WOS:001145547400003
ID  - Xu_etal2023
ER  -