Laser-assisted single and double ionization of helium by electron impact

被引：0

作者：

Bulychev, Andrey A. ^{[1
]}

Kouzakov, Konstantin A. ^{[2
]}

Vinitsky, Sergey I. ^{[1
]}

机构：

[1] Joint Inst Nucl Res, Theoret Phys Lab, Dubna 141980, Russia

[2] Moscow MV Lomonosov State Univ, Fac Phys, Dept Nucl Phys & Quantum Theory Collis, Moscow 119991, Russia

来源：

SARATOV FALL MEETING 2014: OPTICAL TECHNOLOGIES IN BIOPHYSICS AND MEDICINE XVI; LASER PHYSICS AND PHOTONICS XVI; AND COMPUTATIONAL BIOPHYSICS | 2015年 / 9448卷

关键词：

laser-assisted collisions; ionization-excitation; electron impact; helium atom; electron momentum spectroscopy; WAVE-FUNCTIONS; COLLISIONS; ATOM; RADIATION;

D O I：

10.1117/12.2179952

中图分类号：

Q6 [生物物理学];

学科分类号：

071011 ;

摘要：

We consider theoretically laser-assisted ionization of a helium atom by electron impact at large momentum transfer. Fully differential cross sections of these processes are studied as functions of the recoil-ion momentum for the cases when the residual He+ ion is left both in the bound (n = 1 and n = 2) and in the continuum states in the presence of a linearly-polarized laser field with frequency w = 1.55 eV and intensity I = 5 x 10(11) W/cm(2). We inspect how the orientation of the polarization influences the laser-assisted momentum profiles using different models of the helium wave function. It is found that the Kroll-Watson sum rule is well applicable in the (e, 3 - le) case.

引用

页数：10

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