1. Beta delayed neutron emission of $N=84$ $^{132}$Cd
- Author
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Madurga, M., Xu, Z. Y., Grzywacz, 1 R., Andreyev, A., Benzoni, G., Borge, M. J. G., Costache, C., Cox, I., Dimitrov, B., Van Duppen, P., Fraile, L. M., Franchoo, S., Fynbo, H., Gonsalves, B., Gottardo, A., Greenless, P. T., Gross, C. J., Harkness-Brennan, L. J., Hyuse, M., Judson, D. S., Kisyov, S., Kolos, K., Konki, J., Kurzewicz, J., Lazarus, I., Lica, R., Lynch, L., Lund, M., Marginean, N., Marginean, R., Mihai, C., Marroquin, I., Mazzocchi, C., Mengoni, D., Morales, A. I., Nacher, E., Negret, A., Page, R. D., Pascu, S., Paulauskas, S. V., Perea, A., Piersa-Silkowska, M., Pucknell, V., Rahkila, P., Rapisarda, E., Rotaru, F., Sotty, C., Taylor, S., Tengblad, O., Vedia, V., Verney, D., Wadsworth, R., Warr, N., and de Witte, H.
- Subjects
Nuclear Experiment ,Nuclear Theory - Abstract
Using the time-of-flight technique, we measured the beta-delayed neutron emission of $^{132}$Cd. From our large-scale shell model (LSSM) calculation using the N$^3$LO interaction [Z.Y. Xu et al., Phys. Rev. Lett. 131, 022501 (2023)], we suggest the decay is dominated by the transformation of a neutron in the $g_{7/2}$ orbital, deep below the Fermi surface, into a proton in the $g_{9/2}$ orbital. We compare the beta-decay half-lives and neutron branching ratios of nuclei with $Z<50$ and $N\geq82$ obtained with our LSSM with those of leading "global" models. Our calculations match known half-lives and neutron branching ratios well and suggest that current leading models overestimate the yet-to-be-measured half-lives. Our model, backed by the $^{132}$Cd decay data presented here, offers robust predictive power for nuclei of astrophysical interest such as $r$-process waiting points., Comment: 7 pages, 5 figures
- Published
- 2024