中高能区电子与分子散射总截面的计算  

The total cross section of electron-molecule scattering in the intermediate and high energy region

作　　者：商继敏[1] 王如梅[1] 孙金锋[2] 刘玉芳[2] 

机构地区：[1]郑州轻工业学院技术物理系,郑州450003 [2]河南师范大学物理与信息工程学院,新乡453002

出　　处：《原子与分子物理学报》2004年第2期187-190,共4页Journal of Atomic and Molecular Physics

基　　金：院青年基金项目

摘　　要：实验表明,电子与分子碰撞总截面(TCS)与分子本身固有参数(极化率、键长等)有一定关系,所以可从理论上定量探索这种关系,找出包含这些参数的准经验公式。理论上可根据散射截面的"低能极限为硬球势散射、高能极限为玻恩近似"的思想,参考实验上测得的一些分子的总截面与分子的极化率的定量关系,我们用分子的几何和物理参数模拟了一种准经验公式。The relations between the total cross section and physical-chemical parameters of the molecule have been proved by the experiment. So in theory we can search the relations. From the experimental result and the Born approximation for scattering on a screened coulomb potential, we describe the relations by a semiemprical formula which may help to estimate the total cross sections of electron scattering by molecules. It has a relationship with the molecular polarization and the number of electrons in the molecule. The formula can be used widely and it yields better result comparing with the experimental in the intermediate and high energy region.

关 键 词：总截面 经验公式 分子固有参数 

分 类 号：O3130[理学—一般力学与力学基础]