First observation of the coexistence of multiple chiral doublet bands and pseudospin doublet bands in the A ≈ 80 mass region
L. Mu, S. Y. Wang, S. Y. Wang, C. Liu, B. Qi, R. A. Bark, Jie Meng, Shuangquan Zhang, Peter G. Jones, S. Wyngaardt, Hui Jia, Q. B. Chen, Zhaofeng Li, S. Wang, S. Wang, D. P. Sun, R. J. Guo, Xiangna Han, W. Z. Xu, X. Xiao, Peihua Zhu, H.W. Li, H. Hua, X.Q. Li, C.G. Li, Rui Han, B. Sun, Li Zhu, T. D. Bucher, B. V. Kheswa, N. A. Khumalo, E. A. Lawrie, J. J. Lawrie, K. L. Malatji, L. Msebi, J. Ndayishimye, J. F. Sharpey‐Schafer, O. Shirinda, M. Wiedeking, T. S. Dinoko, S. S. Ntshangase
Abstract
Two nearly degenerate positive-parity bands with the πg9/22⊗νg9/2−1 configuration and three nearly degenerate negative-parity bands with the πg9/2(p3/2,f5/2)⊗νg9/2−1 configuration have been identified in 81Kr. They are interpreted as chiral doublet bands and pseudospin-chiral triplet bands, which is supported by the constrained covariant density functional theory and the multiparticle plus rotor model calculations. The present work reports two new chiral configurations πg9/22⊗νg9/2−1 and πg9/2(p3/2,f5/2)⊗νg9/2−1, and the first example of pseudospin-chiral triplet bands involving the π(p3/2,f5/2) pseudospin doublet.