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Stopping of ions in a plasma irradiated by an intense laser field

Published online by Cambridge University Press:  04 October 2011

H.B. Nersisyan*
Affiliation:
Institute of Radiophysics and Electronics, Ashtarak, Armenia Centre of Strong Fields Physics, Yerevan State University, Yerevan, Armenia
C. Deutsch
Affiliation:
LPGP (UMR-CNRS 8578), Université Paris XI, Orsay, France
*
Address correspondence and reprint requests to: H.B. Nersisyan, Institute of Radiophysics and Electronics, 0203 Ashtarak, Ameria. E-mail: hrachya@irphe.am
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Abstract

The inelastic interaction between heavy ions and an electron plasma in the presence of an intense radiation field (RF) is investigated. The stopping power of the test ion averaged with a period of the RF has been calculated assuming that ω0 > ωp, where ω0 is the frequency of the RF and ωp is the plasma frequency. In order to highlight the effect of the radiation field we present a comparison of our analytical and numerical results obtained for nonzero RF with those for vanishing RF. It has been shown that the RF may strongly reduce the mean energy loss for slow ions while increasing it at high–velocities. Moreover, it has been shown, that acceleration of the projectile ion due to the RF is expected at high–velocities and in the high–intensity limit of the RF, when the quiver velocity of the plasma electrons exceeds the ion velocity.

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Type
Research Article
Copyright
Copyright © Cambridge University Press 2011

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