exchange collision meaning in English

交换碰撞

First , we extended the liberman model of collisionless rf sheath . taking into account elastic collisions and charge - exchange collisions between ions and neutral particles , we established a self - consistent model describing the dynamics of rf sheath driven by a sinusoidal current source . the effects of collisions and rf - biased source power on the instantaneous thickness of the rf sheath and the sheath electric fields were studied
首先将liberman的无碰撞射频鞘层模型进行推广，考虑了离子与中性粒子的电荷交换碰撞效应，建立了描述碰撞射频等离子体鞘层动力学特性的自洽模型，研究了碰撞效应，射频偏压，电源参数等对射频鞘层的瞬时厚度及电场分布的影响。
Second , monte - carlo method is used to simulate the transports of ions penetrating through the rf sheath in terms of the above sheath dynamic model . here , both elastic collisions and charge - exchange collisions between ions and neutral particles are considered . the effects of collisions on the distributions of ions energy and angle incident on the substrate were calculated
其次，利用已建立的碰撞等离子体鞘层模型和monte - carlo方法模拟了离子在射频鞘层电场中的运动过程，不仅考虑了离子同中性粒子的电荷交换碰撞，还考虑了它们之间的弹性碰撞过程，研究了碰撞效应对入射到基板上的离子能量分布和角度分布的影响。