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Proceedings Paper

Laser-assisted single and double ionization of helium by electron impact
Author(s): Andrey A. Bulychev; Konstantin A. Kouzakov; Sergey I. Vinitsky
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Paper Abstract

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 = 5×1011W/cm2. 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 − 1e) case.

Paper Details

Date Published: 19 March 2015
PDF: 10 pages
Proc. SPIE 9448, Saratov Fall Meeting 2014: Optical Technologies in Biophysics and Medicine XVI; Laser Physics and Photonics XVI; and Computational Biophysics, 944829 (19 March 2015); doi: 10.1117/12.2179952
Show Author Affiliations
Andrey A. Bulychev, Joint Institute for Nuclear Research (Russian Federation)
Konstantin A. Kouzakov, Lomonosov Moscow State Univ. (Russian Federation)
Sergey I. Vinitsky, Joint Institute for Nuclear Research (Russian Federation)


Published in SPIE Proceedings Vol. 9448:
Saratov Fall Meeting 2014: Optical Technologies in Biophysics and Medicine XVI; Laser Physics and Photonics XVI; and Computational Biophysics
Elina A. Genina; Vladimir L. Derbov; Kirill V. Larin; Dmitry E. Postnov; Valery V. Tuchin, Editor(s)

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