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À propos de : Relativistic two-plasmon excitation by a laser near the critical layer in a plasma        

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  • Relativistic two-plasmon excitation by a laser near the critical layer in a plasma
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  • An intense laser incident on a plasma relativistically modulates the electron mass at the second harmonic. Near the critical layer, the oscillatory mass couples two oppositely propagating Langmuir waves which grow at a rate $\Gamma\simomega_{\rm p} v^2_0/16c^2$, where $omega_{\rm p}$ is the plasma frequency, v0 is the oscillatory electron velocity and c is the velocity of light in vacuum. The decay is accompanied by the excitation of a low-frequency mode which at large wave number $(kc>omega_{\rm p})$ enhances the growth rate of the two-plasmon process.
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  • 43612
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  • © EDP Sciences, 1998
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  • EDP Sciences
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