<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mi>β</mml:mi></mml:math>-delayed neutron spectroscopy of <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mmultiscripts><mml:mi>In</mml:mi><mml:mprescripts/><mml:none/><mml:mn>133</mml:mn></mml:mmultiscripts></mml:math>
Z. Y. Xu, M. Madurga, R. Grzywacz, T. King, A. Algora, A. N. Andreyev, J. Benito, T. Berry, M. J. G. Borge, C. Costache, H. De Witte, A. Fijałkowska, L. M. Fraile, H. O. U. Fynbo, A. Gottardo, C. Halverson, L. J. Harkness-Brennan, J. Heideman, M. Huyse, A. Illana, Ł. Janiak, D. S. Judson, A. Korgul, T. Kurtukian‐Nieto, I. Lazarus, R. Lică, R. Lozeva, N. Mărginean, R. Marginean, C. Mazzocchi, C. Mihai, R. E. Mihai, A. I. Morales, R. D. Page, J. Pakarinen, M. Piersa-Siłkowska, Zs. Podolyák, P. Sarriguren, M. Singh, Ch. Sotty, M. Stepaniuk, O. Tengblad, A. Turturică, P. Van Duppen, V. Vedia, S. Víñals, N. Warr, R. Yokoyama, Cenxi Yuan
Abstract
The decay properties of $^{133}\mathrm{In}$ 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 ($^{133g}\mathrm{In}$) and $1/{2}^{\ensuremath{-}}$ isomer ($^{133m}\mathrm{In}$). With the use of $\ensuremath{\beta}$-delayed neutron and $\ensuremath{\gamma}$ 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 $9/{2}^{+}\ensuremath{\rightarrow}7/{2}^{+}$ was located at 5.93 MeV in the $^{133g}\mathrm{In}$ decay with a $\mathrm{log}ft=4.7(1)$. In addition, several neutron-unbound states were populated at lower excitation energies by the first-forbidden decays of $^{133g,m}\mathrm{In}$. We assigned spins and parities to those neutron-unbound states based on the $\ensuremath{\beta}$-decay selection rules, the $\mathrm{log}ft$ values, and systematics.