Predicting differential cross sections of electron scattering from polyatomic molecules

被引：7

作者：

Sun, Weiguo ^{[1
,2
]}

Wang, Qi ^{[2
]}

Zhang, Yi ^{[3
]}

Li, Huidong ^{[1
]}

Feng, Hao ^{[1
]}

Fan, Qunchao ^{[1
]}

机构：

[1] Xihua Univ, Res Ctr Adv Computat, Sch Sci, Chengdu 610039, Sichuan, Peoples R China

[2] Sichuan Univ, Inst Atom & Mol Phys, Chengdu 610065, Sichuan, Peoples R China

[3] Sichuan Univ, Sch Phys, Chengdu 610065, Sichuan, Peoples R China

来源：

JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS | 2015年 / 48卷 / 12期

基金：

中国国家自然科学基金;

关键词：

cross section; molecular scattering; polyatomic molecule; SCHWINGER VARIATIONAL PRINCIPLE; R-MATRIX THEORY; VIBRATIONAL-EXCITATION; METHANE SCATTERING; ELASTIC-SCATTERING; WATER-VAPOR; AB-INITIO; COLLISIONS; IMPACT;

D O I：

10.1088/0953-4075/48/12/125201

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Based on a difference converging method (DCM) and the general differential cross section (DCS) expression, an analytical formula and a converging protocol used to predict accurate values of experimentally unknown DCSs are proposed. The accurate DCSs, integral cross sections and momentum transfer cross sections of electron scattering from N-2, H2O, CH4, and CF3I molecules are studied using the new formula and a set of experimental DCSs. The calculated results show that not only all known experimental DCSs are excellently reproduced but also the unknown ones are correctly predicted. This study suggests a method as a reliable and economical theoretical alternative to obtain unknown DCSs of electron scattering from a polyatomic molecule.

引用

页数：10

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