학술논문
Beta-delayed neutron spectroscopy of $^{133}$In
Document Type
Working Paper
Author
Xu, Z. Y.; Madurga, M.; Grzywacz, R.; King, T. T.; Algora, A.; Andreyev, A. N.; Benito, J.; Berry, T.; Borge, M. J. G.; Costache, C.; De Witte, H.; Fijalkowska, A.; Fraile, L. M.; Fynbo, H. O. U.; Gottardo, A.; Halverson, C.; Harkness-Brennan, L. J.; Heideman, J.; Huyse, M.; Illana, A.; Janiak, Ł.; Judson, D. S.; Korgul, A.; Kurtukian-Nieto, T.; Lazarus, I.; Lică, R.; Lozeva, R.; Marginean, N.; Marginean, R.; Mazzocchi, C.; Mihai, C.; Mihai, R. E.; Morales, A. I.; Page, R. D.; Pakarinen, J.; Piersa-Siłkowska, M.; Podolyák, Zs.; Sarriguren, P.; Singh, M.; Sotty, Ch.; Stepaniuk, M.; Tengblad, O.; Turturica, A.; Van Duppen, P.; Vedia, V.; Viñals, S.; Warr, N.; Yokoyama, R.; Yuan, C. X.
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Subject
Language
Abstract
The decay properties of $^{133}$In were studied in detail at the ISOLDE Decay Station (IDS). The implementation of the Resonance Ionization Laser Ion Source (RILIS) allowed separate measurements of its $9/2^+$ ground state ($^{133g}$In) and $1/2^-$ isomer ($^{133m}$In). 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 $9/2^+\rightarrow7/2^+$ was located at 5.92 MeV in the $^{133g}$In decay with a logft = 4.7(1). In addition, several neutron-unbound states were populated at lower excitation energies by the First-Forbidden decays of $^{133g,m}$In. We assigned spins and parities to those neutron-unbound states based on the $\beta$-decay selection rules, the logft values, and systematics.