Journal article Open Access

Evolution of self-focusing of intense electromagnetic waves in plasma

Mori, W. B.; Joshi, C.; Dawson, J. M.; Forslund, D. W.; Kindel, J. M.

The self-focusing of intense electromagnetic waves in a very underdense plasma is studied in computer simulations. Relativistic self-focusing occurs initially. This is followed by ''ponderomotive blowout'' and filamentation at the edge of the channel walls. The self-focusing is more intense for resonant double-frequency than for single-frequency illumination.

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