PT Journal
AU Xu, ZYea
   Algora, A
   Morales, AI
TI Beta-delayed neutron spectroscopy of 133In
SO Physical Review C
JI Phys. Rev. C
PY 2023
BP 014314
EP 9pp
VL 108
IS 1
DI 10.1103/PhysRevC.108.014314
LA English
AB The decay properties of 133In were studied in detail at the ISOLDE Decay Station. The implementation of the Resonance Ionization Laser Ion Source allowed separate measurements of its 9/2+ ground state (133gIn) and 1/2- isomer (133mIn). With the use of & beta;-delayed neutron and & gamma; spectroscopy, the decay strengths above the neutron separation energy were quantified in this neutron-rich nucleus for the first time. The allowed Gamow-Teller transition 9/2+ & RARR; 7/2+ was located at 5.93 MeV in the 133gIn decay with a log ft = 4.7(1). In addition, several neutron-unbound states were populated at lower excitation energies by the first-forbidden decays of 133g,mIn. We assigned spins and parities to those neutron-unbound states based on the & beta;-decay selection rules, the log ft values, and systematics.
ER