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  • 摘要: 本工作利用重离子熔合蒸发反应196Pt(13C, 4n)205Po布居了205Po核的高自旋态,13C束流能量为72 MeV。扩展了205Po的能级纲图,新建了3个退激序列,新发现了19条γ射线。^203,\,205,\,207\rmPo的晕态结构与大规模壳模型的计算结果进行了比较,壳模型计算使用的组态空间包含相同的质子和中子轨道,包括0h9/2, 1f5/2, 2p3/2, 2p1/2, 1g9/2。理论计算结果很好地再现了实验数据。

     

    Abstract: High-spin states in 205Po have been investigated by using in-beam γ ray spectroscopy with the 196Pt(13C, 4n)205Po reaction at a beam energy of 72 MeV. The previously known level scheme has been extended, and 3 new decay sequence have been established by adding nineteen new γ rays. The yrast level structures in ^203,\,205,\,207\rmPo are compared with large-scale shell model calculations performed in a configuration space with the same proton and neutron orbits, which are 0h9/2, 1f5/2, 2p3/2, 2p1/2, 1g9/2. The calculated results are in reasonable agreement with experimental data.

     

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