Abstract
The influence of low-frequency waves of kinetic nature induced by electron trapping in backward Stimulated Raman Scattering (SRS) is investigated. Semi-lagrangian Vlasov-Maxwell simulations are carried out not only for periodic boundary conditions but also in the case of an open plasma with parabolic shape, in optical mixing. We provide a numerical example of generation of KEEN (kinetic electrostatic electron nonlinear) waves nonlinearly induced from the SRS through a mechanism we first here elucidate. In particular we identify a process of backward scattering of the SRS probe light from the so generated KEEN waves, which may provide a mechanism for the possible experimental observation and measurement of such nonlinear structures.
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Contribution to the Topical Issue “Theory and Applications of the Vlasov Equation”, edited by Francesco Pegoraro, Francesco Califano, Giovanni Manfredi and Philip J. Morrison.
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Ghizzo, A., Del Sarto, D. Nonlinear nature of kinetic undamped waves induced by electrostatic turbulence in stimulated Raman backscattering. Eur. Phys. J. D 68, 275 (2014). https://doi.org/10.1140/epjd/e2014-50116-5
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DOI: https://doi.org/10.1140/epjd/e2014-50116-5