g Factor of the Zr99 (7/2+) Isomer: Monopole Evolution in the Shape-Coexisting Region
g Factor of the Zr99 (7/2+) Isomer: Monopole Evolution in the Shape-Coexisting Region
复制标题
Zr99(7/2)异构体的g因子：形状共存区域的单极演化
DOI：
10.1103/physrevlett.124.112501
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发表时间：
2020
影响因子：
8.6
通讯作者：
Boulay F. 他 47 名
中科院分区：
文献类型：
--
作者：
Cannon Kipp;Caudill Sarah;Chan Chiwai;et al;福島竜輝;Boulay F. 他 47 名
用含时微扰角分布技术测量了原子核低能同质异能态的旋磁因子。该能级的自旋和宇称为，半衰期为。在RIKEN RIBF通过初级束的磨损-裂变产生了该异构体并进行了自旋取向。推导出了该异构体的磁矩，表明它在自然界中不是单粒子。实验值与相互作用玻色子-费米子模型IBFM-1的结果的比较表明，该状态是强烈混合的主成分。此外，研究发现，随着集体模式的出现，单极单粒子演化发生显着变化，这可能是由于II型壳层演化。
The gyromagnetic factor of the low-lyingisomeric state of the nucleuswas measured using the time-dependent perturbed angular distribution technique. This level is assigned a spin and parity of, with a half-life of. The isomer was produced and spin aligned via the abrasion-fission of aprimary beam at RIKEN RIBF. A magnetic momentwas 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 maincomposition. Furthermore, it was found that monopole single-particle evolution changes significantly with the appearance of collective modes, likely due to type-II shell evolution.