Relativistic nonlinear dynamics of an intense laser beam propagating in a hot electron-positron magnetoactive plasma

Journal Article · Sat Jun 15 00:00:00 EDT 2013 · Physics of Plasmas

DOI:https://doi.org/10.1063/1.4811390· OSTI ID:22228023

Sepehri Javan, N.; Adli, F. ^[1]

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1. Department of Physics, Faculty of Sciences, University of Mohaghegh Ardabili, P.O. Box 179, Ardabil 56199-11367 (Iran, Islamic Republic of)

The present study is devoted to investigation of the nonlinear dynamics of an intense laser beam interacting with a hot magnetized electron-positron plasma. Propagation of the intense circularly polarized laser beam along an external magnetic field is studied using a relativistic two-fluid model. A modified nonlinear Schrödinger equation is derived based on the quasi-neutral approximation, which is valid for hot plasma. Light envelope solitary waves and modulation instability are studied, for one-dimensional case. Using a three-dimensional model, spatial-temporal development of laser pulse is investigated. Occurrence of some nonlinear phenomena such as self-focusing, self-modulation, light trapping, and filamentation of laser pulse is discussed. Also the effect of external magnetic field and plasma temperature on the nonlinear evolution of these phenomena is studied.

• OSTI ID: 22228023
• Journal Information: Physics of Plasmas, Vol. 20, Issue 6; Other Information: (c) 2013 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 1070-664X
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
APPROXIMATIONS
ELECTRON TEMPERATURE
ELECTRONS
HOT PLASMA
ION TEMPERATURE
MAGNETIC FIELDS
MODULATION
NONLINEAR PROBLEMS
ONE-DIMENSIONAL CALCULATIONS
PLASMA FLUID EQUATIONS
PLASMA INSTABILITY
PLASMA SIMULATION
POSITRONS
RELATIVISTIC PLASMA
SCHROEDINGER EQUATION
SOLITONS
THREE-DIMENSIONAL CALCULATIONS
TRAPPING