Signature splitting of the g7/2[404]7/2+ bands in 131Ba and 133Ce
Signature splitting of the g7/2[404]7/2+ bands in 131Ba and 133Ce
复制标题
131Ba 和 133Ce 中 g7/2[404]7/2 能带的特征分裂
DOI：
10.1103/physrevc.104.064304
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发表时间：
2021
影响因子：
3.1
通讯作者：
Galtaross
中科院分区：
文献类型：
--
作者：
Ding B.;Petrache C. M.;Guo S.;Lawrie E. A.;Wakudyanaye I.;Zhang Z. H.;Wang H. L.;Meng H. Y.;Mengoni D.;Qiang Y. H.;Wang J. G.;Andreoiu C.;Astier A.;Avaa A.;B"ack T.;Bark R. A.;Bazzacco D.;Boso A.;Bucher T. D.;Cederwall B.;Chisapi M. V.;Fan H. L.;Galtaross
利用在束光谱分别通过和反应研究了和的激发态。在和中发现了一个与构型有关的强耦合带。在同位素中首次观察到了谱带。与奇Ta和Re同位素的谱带相比，这些特征伴体表现出相当大的能量劈裂。广泛的曲柄壳模型和准粒子加三轴转子模型计算揭示了签名分裂的起源，这不仅取决于三轴度，但也与附近的低轨道的组态混合。
Excited states inandwere studied using in-beam-ray spectroscopy through theandreactions, respectively. A strongly coupled band, associated with theconfiguration, was identified inand. It is the first time to observe thebands in theisotones. The signature partners exhibit considerable energy splitting in comparison with those in thebands in the odd-Ta and Re isotopes. Extensive cranked shell model and quasiparticle-plus-triaxial-rotor model calculations reveal the origin of the signature splitting, which depends not only on the triaxiality, but also on the configuration mixing with nearby low-orbitals.