Dynamics of electromagnetic solitons in a relativistic plasma

Journal Article · Mon May 15 00:00:00 EDT 2006 · Physics of Plasmas

DOI:https://doi.org/10.1063/1.2203606· OSTI ID:20783059

Mancic, Ana; Hadzievski, Ljupco; Skoric, Milos M ^[1]

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1. Department of Physics, Faculty of Sciences and Mathematics, University of Nis, P. O. B. 224, 18001 Nis (Serbia and Montenegro)

Dynamical features of one-dimensional electromagnetic solitons formed in a relativistic interaction of a linearly polarized laser light with underdense cold plasma are investigated. The relativistic Lorentz force in an intense laser light pushes electrons into longitudinal motion, generating coupled longitudinal-transverse waves. In a weakly relativistic approximation these modes are well described by the generalized nonlinear Schroedinger type of equation, with two extra nonlocal terms. Here, an original analytical solution for a moving electromagnetic soliton is derived in an implicit form. For an isolated soliton, our analysis shows that the motion downshifts the soliton eigenfrequency and decreases its amplitude. The effect of the soliton velocity on the stability is analytically predicted and checked numerically. Results show shifting of the stability region toward larger amplitudes in comparison to the standing soliton case. Rich dynamics with examples of (un)stable soliton propagation and breather creation and formation of unstable cusp-type structures is exposed numerically.

• OSTI ID: 20783059
• Journal Information: Physics of Plasmas, Vol. 13, Issue 5; Other Information: DOI: 10.1063/1.2203606; (c) 2006 American Institute of Physics; 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
AMPLITUDES
ANALYTICAL SOLUTION
APPROXIMATIONS
COLD PLASMA
COMPARATIVE EVALUATIONS
EIGENFREQUENCY
ELECTRONS
LASERS
LIGHT TRANSMISSION
LORENTZ FORCE
NONLINEAR PROBLEMS
PLASMA INSTABILITY
RELATIVISTIC PLASMA
RELATIVISTIC RANGE
SCHROEDINGER EQUATION
SOLITONS
STABILITY
VELOCITY
VISIBLE RADIATION