Ionization in fast atom-atom collisions: The influence and scaling behavior of electron-electron and electron-nucleus interactions

被引：9

作者：

Sanders, J. M. ^{[1
]}

DuBois, R. D. ^{[2
]}

Manson, S. T. ^{[3
]}

Datz, S. ^{[4
]}

Deveney, E. F. ^{[4
]}

Krause, H. F. ^{[4
]}

Shinpaugh, J. L. ^{[4
]}

Vane, C. R. ^{[4
]}

机构：

[1] Univ S Alabama, Dept Phys, Mobile, AL 36688 USA

[2] Univ Missouri, Dept Phys, Rolla, MO 65401 USA

[3] Georgia State Univ, Dept Phys & Astron, Atlanta, GA 30303 USA

[4] Oak Ridge Natl Lab, Div Phys, Oak Ridge, TN 37831 USA

来源：

PHYSICAL REVIEW A | 2007年 / 76卷 / 06期

关键词：

D O I：

10.1103/PhysRevA.76.062710

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We report cross sections for ionization of He coincident with electron loss from He, Li, C, O, and Ne projectiles. For He, Li, C, and O projectiles, the cross sections were measured directly, while the Ne cross sections were obtained by transforming results for He projectiles colliding with Ne. We find that, at energies of about 100-500 keV/u, neutral projectiles can ionize a He target almost as effectively as a charged projectile. The contribution to ionization due to electron-electron interactions is found to scale with the number of available projectile electrons. Comparing ionization by the bound electrons on projectiles to ionization by free electrons, we find that the cross sections for ionization by bound electrons are systematically smaller than those for free electrons.

引用

页数：9

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