First observation of the coexistence of multiple chiral doublet bands and pseudospin doublet bands in the A ≈ 80 mass region

L Mu,X.Q Li,C Liu,B Qi,J Meng,H Hua,O Shirinda,L Msebi,M Wiedeking,J Ndayishimye,P Jones,Z.Q Li,S Wang,C.G Li,R Han,H.W Li,K L Malatji ,B V Kheswa ,X C Han ,Peihua Zhu ,W Z Xu ,B Sun ,J F Sharpey‐Schafer ,R A Bark ,N A Khumalo ,D P Sun ,R J Guo ,S Wyngaardt ,T S Dinoko ,Hui Jia ,S Q Zhang ,Lihua Zhu ,Q B Chen ,T D Bucher ,Xia Xu ,J J Lawrie ,E A Lawrie ,S Y Wang ,S S Ntshangase

doi:10.1016/j.physletb.2022.137006

First observation of the coexistence of multiple chiral doublet bands and pseudospin doublet bands in the A ≈ 80 mass region

L Mu, X.Q Li + Show 37 more

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https://doi.org/10.1016/j.physletb.2022.137006

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Journal: Physics Letters B	Publication Date: Mar 4, 2022
Citations: 12	License type: cc-by

Affiliation: Shandong University, Kyoto University, Peking University, Stellenbosch University, iThemba Laboratory, East China Normal University

#Chiral Doublet Bands #Rotor Model Calculations + Show 8 more

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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.

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