A1 Journal article (refereed)
Three beta-decaying states in 128In and 130In resolved for the first time using Penning-trap techniques (2020)

Nesterenko, D., Kankainen, A., Kostensalo, J., Nobs, C., Bruce, A., Beliuskina, O., Canete, L., Eronen, T., Gamba, E., Geldhof, S., de Groote, R., Jokinen, A., Kurpeta, J., Moore, I., Morrison, L., Podolyák, Z., Pohjalainen, I., Rinta-Antila, S., de Roubin, A., . . . Äystö, J. (2020). Three beta-decaying states in 128In and 130In resolved for the first time using Penning-trap techniques. Physics Letters B, 808, Article 135642. https://doi.org/10.1016/j.physletb.2020.135642

JYU authors or editors

Publication details

All authors or editors: Nesterenko, D.A.; Kankainen, A.; Kostensalo, J.; Nobs, C.R.; Bruce, A.M.; Beliuskina, O.; Canete, L.; Eronen, T.; Gamba, E.R.; Geldhof, S.; et al.

Journal or series: Physics Letters B

ISSN: 0370-2693

eISSN: 1873-2445

Publication year: 2020

Volume: 808

Article number: 135642

Publisher: Elsevier BV

Publication country: Netherlands

Publication language: English

DOI: https://doi.org/10.1016/j.physletb.2020.135642

Publication open access: Openly available

Publication channel open access: Open Access channel

Publication is parallel published (JYX): https://jyx.jyu.fi/handle/123456789/71276


Isomeric states in 128In and 130In have been studied with the JYFLTRAP Penning trap at the IGISOL facility. By employing state-of-the-art ion manipulation techniques, three different beta-decaying states in 128In and 130In have been separated and their masses measured. JYFLTRAP was also used to select the ions of interest for identification at a post-trap decay spectroscopy station. A new beta-decaying high-spin isomer feeding the 15− isomer in 128Sn has been discovered in 128In at 1797.6(20) keV. Shell-model calculations employing a CD-Bonn potential re-normalized with the perturbative G-matrix approach suggest this new isomer to be a 16+ spin-trap isomer. In 130In, the lowest-lying (10−) isomeric state at 58.6(82) keV was resolved for the first time using the phase-imaging ion cyclotron resonance technique. The energy difference between the 10− and 1− states in 130In, stemming from parallel/antiparallel coupling of (π0g9/2−1)⊗(ν0h11/2−1), has been found to be around 200 keV lower than predicted by the shell model. Precise information on the energies of the excited states determined in this work is crucial for producing new improved effective interactions for the nuclear shell model description of nuclei near 132Sn.

Free keywords: isomers; penning trap; beta-decay spectroscopy; shell model

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Ministry reporting: Yes

Reporting Year: 2020

JUFO rating: 2

Last updated on 2021-02-08 at 10:17