偶极子-偶极子库仑相互作用能及其电动力学特性

将近场区电场和电偶极矩分别划分为横向场分量和纵向场分量,并求出了偶极子-偶极子横向场相互作用能和纵向场相互作用能,进而求得了横向作用力和纵向作用力以及总的作用力。数值计算结果表明:偶极子-偶极子的相互作用能和相互作用力都随着偶极子-偶极子间距R的增大而迅速减小为零,并且随偶极矩相对于系统轴线的取向角的变化而呈周期性变化。

Dipole-Dipole Coulomb Interaction Energy and Electrodynamic Properties

Near-field electric field and dipole moment are divided into two parts respectively, transverse part and longitudinal part, and the interaction energy of transverse part and longitudinal part is obtained. Moreover, we get the interaction force of transverse part, longitudinal part and the total part. Numerical results show that dipole-dipole interaction energy and force decrease sharply with the distance of dipole-dipole, and change periodically along with the angle between dipole moment and axis of the system changing.