里德伯Cs原子与CCl_4分子的碰撞电离研究

The study of collisional ionization properties of Rydberg Cs atoms with CCl 4 molecules

为描述里德伯Ｃｓ原子与ＣＣｌ４分子碰撞电离实验研究中所发现的若干特征，对里德伯原子与分子碰撞的理论模型———准自由电子模型提出两点修正：（１）考虑原子实在碰撞过程中的作用，并且计入量子亏损；（２）考虑碰撞后正负离子的分离几率。利用修正的模型进行了理论计算，得到了与实验测量较为吻合的结果。

In order to explain some characteristics discovered in the experimental study of the collisional ionization of Rydberg Cs atoms with CCl 4 molecules, two corrections were made to the quasi free electron mode, commonly used to describe the collsional ionization of Rydberg atoms with molecules:(1)the influence of the core and the quantum defect of Rydberg atom were taken into account;(2)the separation probability of the product ion pair was calculated. With this corrected model, a theoretical result in good agreement with our experiment measurements was obtained. A comparison with another reported experimental result was also made.