Nonlinear propagation of broadband intense electromagnetic waves in an electron-positron plasma

M. Marklund; B. Eliasson; P. K. Shukla

doi:10.1063/1.2242941

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Nonlinear propagation of broadband intense electromagnetic waves in an electron-positron plasma

M. Marklund·B. Eliasson·P. K. Shukla

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Abstract

A kinetic equation describing the nonlinear evolution of intense electromagnetic pulses in electron-positron (e-p) plasmas is presented. The modulational instability is analyzed for a relativistically intense partially coherent pulse, and it is found that the modulational instability is inhibited by the spectral pulse broadening. A numerical study for the one-dimensional kinetic photon equation is presented. Computer simulations reveal a Fermi-Pasta-Ulam-like recurrence phenomena for localized broadband pulses. The results should be of importance in understanding the nonlinear propagation of broadband intense electromagnetic pulses in e-p plasmas in laser-plasma systems as well as in astrophysical plasma settings.

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M. Marklund, B. Eliasson, P. K. Shukla. 2006-07-19. Nonlinear propagation of broadband intense electromagnetic waves in an electron-positron plasma. https://doi.org/10.1063/1.2242941

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