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    • Evolution of chirality from transverse wobbling in ^135Pr

    N. Sensharma,U. Garg,Q. B. Chen,S. Frauendorf,S. Zhu, J. Arroyo,A. D. Ayangeakaa,D. P. Burdette,M. P. Carpenter,P. Copp,J. L. Cozzi,S. S. Ghugre,D. J. Hartley,K. B. Howard,R. V. F. Janssens,F. G. Kondev,T. Lauritsen,J. Li,R. Palit, A. Saracino,D. Seweryniak,S. Weyhmiller,J. Wu

    arXiv · （2024）

    Cited 0|Views48
    Abstract
    Chirality is a distinct signature that characterizes triaxial shapes in nuclei. We report the first observation of chirality in the nucleus ^135Pr using a high-statistics Gammasphere experiment with the ^123Sb(^16O,4n)^135Pr reaction. Two chiral-partner bands with the configuration π(1h_11/2)^1⊗ν(1h_11/2)^-2 have been identified in this nucleus. Angular distribution analyses of the Δ I = 1 connecting transitions between the two chiral partners have revealed a dominant dipole character. Quasiparticle triaxial rotor model calculations are in good agreement with the experiment. This is the first time that both signatures of triaxiality–chirality and wobbling–have been observed in the same nucleus.
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    【要点】：本论文首次在^135Pr核中观察到手性，并通过高统计量Gammasphere实验以及^123Sb(^16O,4n)^135Pr反应验证了手性对伴带的存在，其旋量变化为Δ I = 1。
    

    【方法】：研究采用了高统计量的Gammasphere实验方法。
    

    【实验】：通过^123Sb(^16O,4n)^135Pr反应，观察到具有π(1h_11/2)^1⊗ν(1h_11/2)^-2配置的手性伴带，并通过角分布分析确认了连接两个手性伴带的Δ I = 1跃迁具有主要偶极性质。实验结果与准粒子三轴旋子模型计算相符。这是首次在同一核中观察到三轴性两个标志——手性和摇摆。
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