133In : A Rosetta Stone for Decays of r-Process Nuclei
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. (2023). 133In : A Rosetta Stone for Decays of r-Process Nuclei. Physical Review Letters, 131, Article 022501. https://doi.org/10.1103/PhysRevLett.131.022501
Julkaistu sarjassa
Physical Review LettersPäivämäärä
2023Tekijänoikeudet
© Authors. Published by the American Physical Society.
The β decays from both the ground state and a long-lived isomer of 133In were studied at the ISOLDE Decay Station (IDS). With a hybrid detection system sensitive to β, γ, and neutron spectroscopy, the comparative partial half-lives (logft) have been measured for all their dominant β-decay channels for the first time, including a low-energy Gamow-Teller transition and several first-forbidden (FF) transitions. Uniquely for such a heavy neutron-rich nucleus, their β decays selectively populate only a few isolated neutron unbound states in 133Sn. Precise energy and branching-ratio measurements of those resonances allow us to benchmark β-decay theories at an unprecedented level in this region of the nuclear chart. The results show good agreement with the newly developed large-scale shell model (LSSM) calculations. The experimental findings establish an archetype for the β decay of neutron-rich nuclei southeast of 132Sn and will serve as a guide for future theoretical development aiming to
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0031-9007Asiasanat
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We acknowledge the support of the ISOLDE Collaboration and technical teams. The authors thank Dr. Soda Yoshida, Dr. Yutaka Utsuno, Dr. Noritaka Shimizu, Dr. Kate L Jones, and Dr. Ivan N Borzov for valuable discussions. This project was supported by the European Unions Horizon 2020 research and innovation programme under the Grant Agreement No. 654002 (ENSAR2) and the Marie Skłodowska-Curie Grant ...
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