Isomer spectroscopy in Ba133 and high-spin structure of Ba134
Isomer spectroscopy in Ba133 and high-spin structure of Ba134
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Ba133 的异构体光谱和 Ba134 的高自旋结构
DOI：
10.1103/physrevc.100.024323
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发表时间：
2019
影响因子：
3.1
通讯作者：
他計70名
中科院分区：
文献类型：
--
作者：
Kaya L.;Vogt A.;Reiter P.;Siciliano M.;Shimizu N.;Utsuno Y.;他計70名
在多核子转移和在德国科隆大学FN串列加速器的聚变-蒸发反应之后，利用与意大利Legnaro实验室的Prisma磁谱仪耦合的高分辨率高级伽马跟踪阵列，研究了过渡核和。在1942keV的状态被确定为异构体，其半衰期与转变的值相对应。上述同分异构体的能级方案扩展到约6 MeV。在MeV处观察到沿着正奇偶性yrast带的明显的后弯曲。将结果与同位素的高自旋系统学进行了比较。使用GCN50：82，SN100PN，SNV，PQM130，Reality SM和EPQQM相互作用的大规模壳模型计算重现了实验结果，并阐明了高自旋态的结构。采用GCN50：82和PQM130相互作用的壳层模型计算再现了取向性质，并提供了对过渡过程中这一现象的微观起源的详细见解。
The transitional nucleiandare investigated after multinucleon transfer employing the high-resolution Advanced GAmma Tracking Array coupled to the magnetic spectrometer PRISMA at the Laboratori Nazionali di Legnaro, Italy, and after fusion-evaporation reaction at the FN tandem accelerator of the University of Cologne, Germany. Thestate at 1942 keV inis identified as an isomer with a half-life ofcorresponding to avalue offor thetotransition. The level scheme ofabove theisomer is extended to approximately 6 MeV. A pronounced backbending is observed atMeV along the positive-parity yrast band. The results are compared to the high-spin systematics of theisotopes. Large-scale shell-model calculations employing the GCN50:82, SN100PN, SNV, PQM130, Realistic SM, and EPQQM interactions reproduce the experimental findings and elucidate the structure of the high-spin states. The shell-model calculations employing the GCN50:82 and PQM130 interactions reproduce alignment properties and provide detailed insight into the microscopic origin of this phenomenon in transitional.