https://doi.org/10.1140/epjd/e2014-50116-5
Regular Article
Nonlinear nature of kinetic undamped waves induced by electrostatic turbulence in stimulated Raman backscattering*
Institut Jean Lamour-UMR 7168, University of
Lorraine, BP 239,
54506
Vandoeuvre les Nancy,
France
a
e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.
Received:
11
February
2014
Received in final form:
22
April
2014
Published online:
1
October
2014
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.
Contribution to the Topical Issue “Theory and Applications of the Vlasov Equation”, edited by Francesco Pegoraro, Francesco Califano, Giovanni Manfredi and Philip J. Morrison.
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag 2014
