2019年5月10日
New isomers in 125 Pd <inf>79</inf> and 127 Pd <inf>81</inf> : Competing proton and neutron excitations in neutron-rich palladium nuclides towards the N = 82 shell closure
Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
- 巻
- 792
- 号
- 開始ページ
- 263
- 終了ページ
- 268
- 記述言語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1016/j.physletb.2019.03.053
© 2019 The Author(s) The neutron-rich isotopes of palladium have attracted considerable interest in terms of the evolution of the N=82 neutron shell closure and its influence on the r-process nucleosynthesis. In this Letter, we present the first spectroscopic information on the excited states in 125 Pd 79 and 127 Pd 81 studied using the EURICA γ-ray spectrometer, following production via in-flight fission of a high-intensity 238 U beam at the RIBF facility. New isomeric states with half-lives of 144(4) ns and 39(6) μs have been assigned spins and parities of (23/2 + ) and (19/2 + ) in 125 Pd and 127 Pd, respectively. The observed level properties are compared to a shell-model calculation, suggesting the competition between proton excitations and neutron excitations in the proton-hole and neutron-hole systems in the vicinity of the doubly magic nucleus 132 Sn.
- リンク情報
-
- DOI
- https://doi.org/10.1016/j.physletb.2019.03.053
- Web of Science
- https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000466802100040&DestApp=WOS_CPL
- Scopus
- https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85063762429&origin=inward 本文へのリンクあり
- Scopus Citedby
- https://www.scopus.com/inward/citedby.uri?partnerID=HzOxMe3b&scp=85063762429&origin=inward
- ID情報
-
- DOI : 10.1016/j.physletb.2019.03.053
- ISSN : 0370-2693
- ORCIDのPut Code : 95988378
- SCOPUS ID : 85063762429
- Web of Science ID : WOS:000466802100040