滴线附近原子核的奇特行为是目前核物理研究的重点方向之一,质子晕核中弱束缚的晕质子与核芯之间相对运动会形成软共振模式,导致光核截面上显现明显低于巨偶极共振能量和强度的矮偶极共振。晕核的矮共振是否是一种集体运动模式还存在很多争议。我们提出了壳模型框架下计算态之间跃迁密度的方法,该方法提供了除无规位相近似理论外详细研究轻核共振态的另一条途径,进一步扩展亦可应用于研究原 The peculiar behavior of the nuclei near the drip line is one of the key directions of the current nuclear physics research. The relative motion between the weakly bound halo proton and the core in the proton nucleus will form a soft resonance mode, resulting in the photon nuclear cross section being significantly lower than that of the giant Dipole resonance of polar resonance energy and intensity. There is still much controversy over whether the short resonance of halo nuclei is a collective mode of movement. We propose a method for calculating the transition density between states under the shell model framework. This method provides an alternative approach to studying the state of light nuclear resonance in detail, in addition to the theory of random approximations. Further extensions can also be applied to the original