Relativistic ponderomotive forces in the field of intense laser radiation

The motion of a relativistic charged particle in the presence of the field of high-power laser radiation represented in the form of a Gaussian beam of arbitrary mode is analyzed. The vector potential of the radiation field is expanded in terms of a small parameter (the ratio of the wavelength to the...

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Bibliographic Details
Published in:Technical physics 2014-09, Vol.59 (9), p.1261-1266
Main Authors: Castillo, A. J., Milant’ev, V. P.
Format: Article
Language:English
Subjects:
Analysis
Classical and Continuum Physics
Laser beams
Lasers
Physics
Physics and Astronomy
Radiation
Theoretical and Mathematical Physics
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Summary:The motion of a relativistic charged particle in the presence of the field of high-power laser radiation represented in the form of a Gaussian beam of arbitrary mode is analyzed. The vector potential of the radiation field is expanded in terms of a small parameter (the ratio of the wavelength to the Gaussian beam waist). A specific feature of averaging with respect to the phases of the high-mode Gaussian beams is demonstrated. The averaged equations for the motion of particle and a general expression for the ponderomotive relativistic force for the circularly polarized radiation are derived. It is demonstrated that relativistic effects suppress the averaged action of high-power laser radiation on the particle.
ISSN:1063-7842
1090-6525
DOI:10.1134/S1063784214090138