Nonintegrable Interaction of Ion-Acoustic and Electromagnetic Waves in a Plasma

Details Nonintegrable Interaction of Ion-Acoustic and Electromagnetic Waves in a Plasma Nonintegrable Interaction of Ion-Acoustic and Electromagnetic Waves in a Plasma

1996-12-05

arxiv.org/abs/chao-dyn/9612012v2

Phys. Rev. E, 55, 3423 (1997)

Nonlinear Sciences

Chaotic Dynamics

19 pages, REVTeX, 6 ps figures, accepted for publication in Phys. Rev. E

Scientific paper

10.1103/PhysRevE.55.3423

In this paper we re-examine the one-dimensional interaction of electromagnetic and ion acoustic waves in a plasma. Our model is similar to one solved by Rao et al. (Phys. Fluids, vol. 26, 2488 (1983)) under a number of analytical approximations. Here we perform a numerical investigation to examine the stability of the model. We find that for slightly over dense plasmas, the propagation of stable solitary modes can occur in an adiabatic regime where the ion acoustic electric field potential is enslaved to the electromagnetic field of a laser. But if the laser intensity or plasma density increases or the laser frequency decreases, the adiabatic regime loses stability via a transition to chaos. New asymptotic states are attained when the adiabatic regime no longer exists. In these new states, the plasma becomes rarefied, and the laser field tends to behave like a vacuum field.

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