The electric dipole E1 strength in the well-deformed even–even 152–162 Gd was calculated using a model based on translational and Galilean invariant quasi-particle random phase approximation (QRPA), where for the first time the highly-fragmented E1 strength has been predicted below the particle threshold energy. The predicted concentration of the electric dipole excitations exhausts less than 2% of the energy weighed sum rules (EWSR) below 20 MeV in rather good agreement with the experimental data for neighbor nuclei. Through cross sections, transition probabilities, and other properties, the electric dipole response was investigated in 152–162 Gd for a wide range of excitation energies from 5 to 20 MeV. The calculation that was performed with the elimination of effects associated with deformation revealed that the effects associated with neutron excess play a more significant role in the formation of the pygmy dipole resonance (PDR) strength when compared to...

中文翻译：

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变形均匀的152-162 Gd中的矮小偶极子共振

使用基于平移和伽利略不变准粒子随机相位逼近（QRPA）的模型，计算了变形良好的偶数152-162 Gd中的电偶极子E1强度，其中第一次出现了高度碎片化的E1强度，被预测为低于粒子阈值能量。在低于20 MeV的情况下，电偶极子激发的预测浓度消耗的能量小于总能量求和规则（EWSR）的2％，与邻近核的实验数据非常吻合。通过横截面，跃迁几率和其他特性，在152–162 Gd中研究了5到20 MeV的宽范围激发能量的电偶极响应。