β -delayed neutron spectroscopy of In 133

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 (133$g$In) and 1/2- isomer (133$m$In). With the use of $β$-delayed neutron and $γ$ 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+→7/2+ was located at 5.93 MeV in the 133$g$In 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 133$g,m$In. We assigned spins and parities to those neutron-unbound states based on the $β$-decay selection rules, the log $ft$ values, and systematics.