https://doi.org/10.1140/epjb/e2002-00344-1
Envelope solitons induced by high-order effects of light-plasma interaction
Institut für
Theoretische Physik IV, Fakultät für Physik und
Astronomie, Ruhr-Universität Bochum, 44780 Bochum,
Germany
Corresponding author: a renato.fedele@na.infn.it
Received:
24
July
2002
Published online:
31
October
2002
The nonlinear coupling between light beams and non-resonant ion density perturbations in a plasma is considered, taking into account the relativistic particle mass increase and the light beam ponderomotive force. A pair of equations comprising a nonlinear Schrödinger equation for light beams and a driven (by the light beam pressure) ion-acoustic wave response is derived. It is shown that the stationary solutions of our nonlinear equations can be represented in the form of a bright and dark/gray soliton for the one-dimensional problem. We also present numerical results which exhibit that our bright soliton solutions are stable exclusively for the values of the parameters compatible with our theory.
PACS: 52.35.Mw – Nonlinear phenomena: waves, wave propagation, and other interactions (including parametric effects, mode coupling, ponderomotive effects, etc.) / 52.40.Db – Electromagnetic (nonlaser) radiation interactions with plasma / 52.35.Sb – Solitons; BGK modes
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag, 2002
