g Factor of the ^{99}Zr (7/2^{+}) Isomer: Monopole Evolution in the Shape-Coexisting Region.
Journal
Physical review letters
ISSN: 1079-7114
Titre abrégé: Phys Rev Lett
Pays: United States
ID NLM: 0401141
Informations de publication
Date de publication:
20 Mar 2020
20 Mar 2020
Historique:
revised:
28
11
2019
received:
22
08
2019
accepted:
17
12
2019
entrez:
4
4
2020
pubmed:
4
4
2020
medline:
4
4
2020
Statut:
ppublish
Résumé
The gyromagnetic factor of the low-lying E=251.96(9) keV isomeric state of the nucleus ^{99}Zr was measured using the time-dependent perturbed angular distribution technique. This level is assigned a spin and parity of J^{π}=7/2^{+}, with a half-life of T_{1/2}=336(5) ns. The isomer was produced and spin aligned via the abrasion-fission of a ^{238}U primary beam at RIKEN RIBF. A magnetic moment |μ|=2.31(14)μ_{N} was deduced showing that this isomer is not single particle in nature. A comparison of the experimental values with interacting boson-fermion model IBFM-1 results shows that this state is strongly mixed with a main νd_{5/2} composition. Furthermore, it was found that monopole single-particle evolution changes significantly with the appearance of collective modes, likely due to type-II shell evolution.
Identifiants
pubmed: 32242689
doi: 10.1103/PhysRevLett.124.112501
doi:
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
112501Commentaires et corrections
Type : CommentIn