Insensitivity to the long-range Coulomb potential in laser-induced elastic scattering of electrons with ions

被引：3

作者：

Chen, Zhangjin ^{[1
]}

Xu, Junliang ^{[2
]}

Yang, Weifeng ^{[1
]}

Song, Xiaohong ^{[1
]}

机构：

[1] Shantou Univ, Coll Sci, Dept Phys, Shantou 515063, Guangdong, Peoples R China

[2] Ohio State Univ, Dept Phys, Columbus, OH 43210 USA

来源：

PHYSICAL REVIEW A | 2013年 / 88卷 / 06期

基金：

中国国家自然科学基金;

关键词：

HARMONIC-GENERATION; DOUBLE-IONIZATION; MOLECULES; ORBITALS; EMISSION; DYNAMICS; ATOMS;

D O I：

10.1103/PhysRevA.88.065402

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Recently, laser-induced electron diffraction has been used to image molecular structures with subangstrom precision and exposure times of a few femtoseconds by Blaga et al. [Nature (London) 483, 194 (2012)], who treated molecular ions as neutral molecules in the calculation of differential cross section (DCS) for elastic scattering of electrons by molecular ions. In this work, we investigate the long-range and short-range potential effects in elastic scattering of electrons with ions and atoms. It has been found that for incident electron energies above 100 eV and scattering angles greater than 40 degrees, the DCSs of long-range Coulomb potential scattering can be neglected and the DCSs for elastic scattering of electrons with atomic ions and neutral atoms agree well. Therefore, the validity of the treatment in Blaga et al. is verified.

引用

页数：5

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