论文标题
扩展的三轴投影壳模型方法的奇数中子核
Extended triaxial projected shell model approach for odd-neutron nuclei
论文作者
论文摘要
为了阐明在奇怪系统中观察到的丰富带结构，将三轴投影的壳模型方法扩展到包括三级Quasineutron和5 Quasiparticle构型。此扩展使得可以调查高速旋转状态，包括第二个频段交叉。已经对具有扩展基础的奇数XE同位素进行了详细的研究，并显示沿yrast线的频带的特征随着1H11/2轨道的外壳填充而变化。此外，观察到，越过基态构型的三级粒子状态，导致沿yrast线的正常带交叉现象首先基于较早的旋转值基于基态构型越过γ带。该交叉特征解释了一些研究的同位素在γ波段中观察到的签名反转的发生。
In an effort to elucidate the rich band structures observed in odd-neutron systems, triaxial projected shell model approach is extended to include three-quasineutron and five-quasiparticle configurations. This extension makes it possible to investigate the high-spin states up to and including the second band crossing. Detailed investigation has been performed for odd-mass Xe isotopes with the extended basis, and it is shown that character of the band crossing along the yrast line changes with shell filling of the 1h11/2 orbital. Further, it is observed that the three-quasiparticle state that crosses the ground-state configuration, leading to the normal band crossing phenomenon along the yrast line, first crosses the γ band based on the ground-state configuration at an earlier spin value. This crossing feature explains the occurrence of the signature inversion observed in the γ bands for some of the studied isotopes.
