scholarly journals Comment on “Parametric decays of a circularly polarized electromagnetic wave in an electron–positron plasma” [Phys. Plasmas 5, 3171 (1998)]

1999 ◽  
Vol 6 (2) ◽  
pp. 633-634 ◽  
Author(s):  
P. K. Shukla ◽  
L. Stenflo
Keyword(s):  
Electromagnetic Wave ◽  
Plasma Phys ◽  
Circularly Polarized ◽  
Electron Positron

Nonlinear interaction of an intense electromagnetic wave with an unmagnetized electron—positron plasma

1992 ◽  
Vol 48 (1) ◽  
pp. 139-143 ◽  
Author(s):  
V. I. Berezhiani ◽  
L. N. Tsintsadze ◽  
P. K. Shukla
Keyword(s):  
Electromagnetic Wave ◽  
Wave Packet ◽  
Nonlinear Interaction ◽  
Large Scale ◽  
Relativistic Particle ◽  
Mass Variation ◽  
Circularly Polarized ◽  
Electron Positron ◽  
Density Perturbations ◽  
Longitudinal Plasma

The nonlinear interaction of an arbitrarily large-amplitude circularly polarized electromagnetic wave with an unmagnetized electron-positron plasma is considered, taking into account relativistic particle-mass variation as well as large-scale density perturbations created by radiation pressure. It is found that the interaction is governed by an equation for the electromagnetic wave envelope, which is coupled with a pair of equations describing fully nonlinear longitudinal plasma motions. The dynamics of the nonlinear electromagnetic wave packet is studied.

scholarly journals Dark and grey electromagnetic electron-cyclotron envelope solitons in an electron-positron magnetoplasma

2009 ◽  
Vol 75 (5) ◽  
pp. 575-580 ◽  
Author(s):  
P. K. SHUKLA ◽  
R. BINGHAM ◽  
A. D. R. PHELPS ◽  
L. STENFLO
Keyword(s):  
Magnetic Field ◽  
Electromagnetic Wave ◽  
External Magnetic Field ◽  
Wave Packet ◽  
Electron Cyclotron ◽  
Envelope Soliton ◽  
Circularly Polarized ◽  
Envelope Solitons ◽  
Electron Positron ◽  
Cubic Nonlinear Schrödinger Equation

AbstractWe present an investigation of the amplitude modulation of an external magnetic field-aligned right-hand circularly polarized electromagnetic electron-cyclotron (EMEC) wave in a strongly magnetized electron-positron plasma. It is shown that the dynamics of the modulated EMEC wave packet is governed by a cubic nonlinear Schrödinger equation. The latter reveals that a modulated wave packet can propagate in the form of either a dark or a grey envelope soliton. This result could have relevance to the transport of electromagnetic wave energy over long distances via envelope solitons in the magnetospheres of pulsars and magnetars.

Sign in / Sign up

Export Citation Format

Share Document