g Factor of the Zr-99 (7/2(+)) Isomer: Monopole Evolution in the Shape-Coexisting Region

Boulay, F.; Simpson, G.; Ichikawa, Y.; Kisyov, S.; Bucurescu, D.; Takamine, A.; Ahn, D.; Asahi, K.; Baba, H.; Balabanski, D.; Egami, T.; Fujita, T.; Fukuda, N.; Funayama, C.; Furukawa, T.; Georgiev, G.; Gladkov, A.; Hass, M.; Imamura, K.; Inabe, N.; Ishibashi, Y.; Kawaguchi, T.; Kawamura, T.; Kim, W.; Kobayashi, Y.; Kojima, S.; Kusoglu, Aslı; Lozeva, R.; Momiyama, S.; Mukul, I; Niikura, M.; Nishibata, H.; Nishizaka, T.; Odahara, A.; Ohtomo, Y.; Ralet, D.; Sato, T.; Shimizu, Y.; Sumikama, T.; Suzuki, H.; Takeda, H.; Tao, L.; Togano, Y.; Tominaga, D.; Ueno, H.; Yamazaki, H.; Yang, X.; Daugas, J.

doi:10.1103/physrevlett.124.112501

g Factor of the Zr-99 (7/2(+)) Isomer: Monopole Evolution in the Shape-Coexisting Region

Atıf İçin Kopyala

Boulay F., Simpson G. S., Ichikawa Y., Kisyov S., Bucurescu D., Takamine A., ...Daha Fazla

PHYSICAL REVIEW LETTERS, cilt.124, sa.11, 2020 (SCI-Expanded)

Yayın Türü: Makale / Tam Makale
Cilt numarası: 124 Sayı: 11
Basım Tarihi: 2020
Doi Numarası: 10.1103/physrevlett.124.112501
Dergi Adı: PHYSICAL REVIEW LETTERS
Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, Aerospace Database, Chemical Abstracts Core, Compendex, EMBASE, INSPEC, MEDLINE, zbMATH, DIALNET
İstanbul Üniversitesi Adresli: Evet

Özet

The gyromagnetic factor of the low-lying E = 251.96(9) keV isomeric state of the nucleus Zr-99 was measured using the time-dependent perturbed angular distribution technique. This level is assigned a spin and parity of J(pi) = 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 U-238 primary beam at RIKEN RIBF. A magnetic moment vertical bar mu vertical bar = 2.31(14)mu(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 nu d(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.