In the binary collision model, the Coulomb interaction between the test and the target particles is screened because of the polarization of the target.
在二进制的冲突模型里，在试验和目标粒子之间的库仑相互作用被筛选，因为目标的极化作用。
2
The charge exchange and elastic collision between ion and neutral atoms and the collection and Coulomb scattering of ion on dust grains are considered.