133In : A Rosetta Stone for Decays of r-Process Nuclei
Abstract
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 describe accurately the key β decays in the rapid-neutron capture (r-) process.
Main Authors
Format
Articles
Research article
Published
2023
Series
Subjects
Publication in research information system
Publisher
American Physical Society (APS)
The permanent address of the publication
https://urn.fi/URN:NBN:fi:jyu-202308154640Käytä tätä linkitykseen.
Review status
Peer reviewed
ISSN
0031-9007
DOI
https://doi.org/10.1103/PhysRevLett.131.022501
Language
English
Published in
Physical Review Letters
Citation
- 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
License
Funder(s)
European Commission
Funding program(s)
Research infrastructures, H2020
Research infrastructures, H2020
Additional information about funding
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 Agreement No. 101032999 (BeLaPEx); the Office of Nuclear Physics, U.S. Department of Energy under Awards No. DE-FG02-96ER40983 (UTK) and No. DE-AC05-00OR22725 (ORNL); the National Nuclear Security Administration under the Stewardship Science Academic Alliances program through DOE Award No. DE-NA0002132; the Romanian IFA project CERN-RO/ISOLDE; the Research Foundation Flanders (FWO, Belgium); the Interuniversity Attraction Poles Programme initiated by the Belgian Science Policy Office (BriX network P7/12); the German BMBF under Contracts No. 05P18PKCIA and No. 05P21PKCI1 in Verbundprojekte 05P2018 and 05P2021; the UK Science and Technology Facilities Research Council (STFC) of the UK Grants No. ST/R004056/1, No. ST/P004598/1, No. ST/P003885/1, No. ST/V001027/1, and No. ST/V001035/1; National Natural Science Foundation of China under Grant No. 11775316; the Polish National Science Center under Grant No. 2020/39/B/ST2/02346; the Polish Ministry of Education and Science under Contract No. 2021/WK/07; Spanish MCIN/AEI under Grants No. PGC2018-093636-B-I00, No. RTI2018-098868-B-I00, No. PID2019-104390GB-I00, No. PID2019-104714GB-C21, and No. PID2021-126998OB-I00; Generalitat Valenciana, Conselleria de Innovación, Universidades, Ciencia y Sociedad Digital under Grant No. CISEJI/2022/25; Universidad Complutense de Madrid (Spain) through Grupo de Física Nuclear under Grant No. 910059 and through the Predoctoral Grant No. CT27/16-CT28/16; the EU via NextGenerationEU funds. The LSSM calculations were carried out by kshell [47].
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