The interactions between atoms and molecules undertake a very important role in many physical processes and the investigation of rotation excitation cross sections of in the collisions of molecules with atons are an excellent method determining their interactions . many theoretical and experimental researcher have done a lot of reseach work hi this field and got plenty of theoretical and experimental data 原子分子碰撞过程中转动激发截面的研究是确定原子与分子间相互作用势的理想方法，许多理论和实验工作者在这方面做了大量的工作，并取得了很多理论和实验数据。
