Guo R J, Wang S Y, Liu C, Bark R A, Meng J, Zhang S Q, Qi B, Rohilla A, Li Z H, Hua H, Chen Q B, Jia H, Lu X, Wang S, Sun D P, Han X C, Xu W Z, Wang E H, Bai H F, Li M, Jones P, Sharpey-Schafer J F, Wiedeking M, Shirinda O, Brits C P, Malatji K L, Dinoko T, Ndayishimye J, Mthembu S, Jongile S, Sowazi K, Kutlwano S, Bucher T D, Roux D G, Netshiya A A, Mdletshe L, Noncolela S, Mtshali W
Shandong Provincial Key Laboratory of Optical Astronomy and Solar-Terrestrial Environment, School of Space Science and Physics, Institute of Space Sciences, Shandong University, Weihai 264209, People's Republic of China.
iThemba LABS, 7129 Somerset West, South Africa.
Phys Rev Lett. 2024 Mar 1;132(9):092501. doi: 10.1103/PhysRevLett.132.092501.
Three ΔI=1 bands with the πg_{9/2}⊗νg_{9/2} configuration have been identified in {35}^{74}Br{39}. Angular distribution, linear polarization, and lifetime measurements were performed to determine the multipolarity, type, mixing ratio, and absolute transition probability of the transitions. By comparing these experimental observations with the corresponding fingerprints and the quantum particle rotor model calculations, the second and third lowest bands are, respectively, suggested as the chiral partner and one-phonon wobbling excitation built on the yrast band. The evidence indicates the first chiral wobbler in nuclei.
在({35}^{74}Br{39})中已识别出三个具有(\pi g_{9/2}\otimes\nu g_{9/2})组态、(\Delta I = 1)的能带。进行了角分布、线性极化和寿命测量，以确定跃迁的多极性、类型、混合比和绝对跃迁概率。通过将这些实验观测结果与相应的特征以及量子粒子转子模型计算进行比较，第二和第三低能带分别被认为是手性伙伴和基于基态能带构建的单声子摆动激发。证据表明这是原子核中的首个手性摆动体。
