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Article: Proton Shell Evolution below Sn-132: First Measurement of Low-Lying β-Emitting Isomers in Ag-123,125

TitleProton Shell Evolution below Sn-132: First Measurement of Low-Lying β-Emitting Isomers in Ag-123,125
Authors
Issue Date2019
PublisherAmerican Physical Society. The Journal's web site is located at https://journals.aps.org/prl/
Citation
Physical Review Letters, 2019, v. 122 n. 21, article no. 212502, p. 1-6 How to Cite?
AbstractThe β-delayed γ-ray spectroscopy of neutron-rich Ag123,125 isotopes is investigated at the Radioactive Isotope Beam Factory of RIKEN, and the long-predicted 1/2- β-emitting isomers in Ag123,125 are identified for the first time. With the new experimental results, the systematic trend of energy spacing between the lowest 9/2+ and 1/2- levels is extended in Ag isotopes up to N=78, providing a clear signal for the reduction of the Z=40 subshell gap in Ag towards N=82. Shell-model calculations with the state-of-the-art VMU plus M3Y spin-orbit interaction give a satisfactory description of the low-lying states in Ag123,125. The tensor force is found to play a crucial role in the evolution of the size of the Z=40 subshell gap. The observed inversion of the single-particle levels around Ag123 can be well interpreted in terms of the monopole shift of the π1g9/2 orbitals mainly caused by the increasing occupation of ν1h11/2 orbitals.
Persistent Identifierhttp://hdl.handle.net/10722/271273
ISSN
2017 Impact Factor: 8.839
2015 SCImago Journal Rankings: 3.731
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorChen, ZQ-
dc.contributor.authorLi, ZH-
dc.contributor.authorHua, H-
dc.contributor.authorWatanabe, H-
dc.contributor.authorYuan, CX-
dc.contributor.authorZhang, SQ-
dc.contributor.authorLorusso, G-
dc.contributor.authorNishimura, S-
dc.contributor.authorBaba, H-
dc.contributor.authorBrowne, F-
dc.contributor.authorBenzoni, G-
dc.contributor.authorChae, KY-
dc.contributor.authorCrespi, FCL-
dc.contributor.authorDoornenbal, P-
dc.contributor.authorFukuda, N-
dc.contributor.authorGey, G-
dc.contributor.authorGernhäuser, R-
dc.contributor.authorInabe, N-
dc.contributor.authorIsobe, T-
dc.contributor.authorJiang, DX-
dc.contributor.authorJungclaus, A-
dc.contributor.authorJung, HS-
dc.contributor.authorJin, Y-
dc.contributor.authorKameda, D-
dc.contributor.authorKim, GD-
dc.contributor.authorKim, YK-
dc.contributor.authorKojouharov, I-
dc.contributor.authorKondev, FG-
dc.contributor.authorKubo, T-
dc.contributor.authorKurz, N-
dc.contributor.authorKwon, YK-
dc.contributor.authorLi, XQ-
dc.contributor.authorLou, JL-
dc.contributor.authorLane, GJ-
dc.contributor.authorLi, CG-
dc.contributor.authorLuo, DW-
dc.contributor.authorMontaner-Pizá, A-
dc.contributor.authorMoschner, K-
dc.contributor.authorNiu, CY-
dc.contributor.authorNaqvi, F-
dc.contributor.authorNiikura, M-
dc.contributor.authorNishibata, H-
dc.contributor.authorOdahara, A-
dc.contributor.authorOrlandi, R-
dc.contributor.authorPatel, Z-
dc.contributor.authorPodolyák, Z-
dc.contributor.authorSumikama, T-
dc.contributor.authorSöderström, PA-
dc.contributor.authorSakurai, H-
dc.contributor.authorSchaffner, H-
dc.contributor.authorSimpson, GS-
dc.contributor.authorSteiger, K-
dc.contributor.authorSuzuki, H-
dc.contributor.authorTaprogge, J-
dc.contributor.authorTakeda, H-
dc.contributor.authorVajta, Z-
dc.contributor.authorWang, HK-
dc.contributor.authorWu, J-
dc.contributor.authorWendt, A-
dc.contributor.authorWang, CG-
dc.contributor.authorWu, HY-
dc.contributor.authorWang, X-
dc.contributor.authorWu, CG-
dc.contributor.authorXu, C-
dc.contributor.authorXu, Z-
dc.contributor.authorYagi, A-
dc.contributor.authorYe, YL-
dc.contributor.authorYoshinaga, K-
dc.date.accessioned2019-06-24T01:06:42Z-
dc.date.available2019-06-24T01:06:42Z-
dc.date.issued2019-
dc.identifier.citationPhysical Review Letters, 2019, v. 122 n. 21, article no. 212502, p. 1-6-
dc.identifier.issn0031-9007-
dc.identifier.urihttp://hdl.handle.net/10722/271273-
dc.description.abstractThe β-delayed γ-ray spectroscopy of neutron-rich Ag123,125 isotopes is investigated at the Radioactive Isotope Beam Factory of RIKEN, and the long-predicted 1/2- β-emitting isomers in Ag123,125 are identified for the first time. With the new experimental results, the systematic trend of energy spacing between the lowest 9/2+ and 1/2- levels is extended in Ag isotopes up to N=78, providing a clear signal for the reduction of the Z=40 subshell gap in Ag towards N=82. Shell-model calculations with the state-of-the-art VMU plus M3Y spin-orbit interaction give a satisfactory description of the low-lying states in Ag123,125. The tensor force is found to play a crucial role in the evolution of the size of the Z=40 subshell gap. The observed inversion of the single-particle levels around Ag123 can be well interpreted in terms of the monopole shift of the π1g9/2 orbitals mainly caused by the increasing occupation of ν1h11/2 orbitals.-
dc.languageeng-
dc.publisherAmerican Physical Society. The Journal's web site is located at https://journals.aps.org/prl/-
dc.relation.ispartofPhysical Review Letters-
dc.rightsCopyright 2019 by The American Physical Society. This article is available online at https://doi.org/10.1103/PhysRevLett.122.212502-
dc.titleProton Shell Evolution below Sn-132: First Measurement of Low-Lying β-Emitting Isomers in Ag-123,125-
dc.typeArticle-
dc.description.naturepublished_or_final_version-
dc.identifier.doi10.1103/PhysRevLett.122.212502-
dc.identifier.scopuseid_2-s2.0-85066436956-
dc.identifier.hkuros298160-
dc.identifier.volume122-
dc.identifier.issue21-
dc.identifier.spagearticle no. 212502, p. 1-
dc.identifier.epagearticle no. 212502, p. 6-
dc.identifier.isiWOS:000469334100003-
dc.publisher.placeUnited States-

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