Effect of magnetic field on electromagnetic soliton evolution by different pulses

محورهای موضوعی : Journal of Theoretical and Applied Physics

Aparna Sharma ¹ , Hitendra K. Malik ² , Harish Kumar ³ , Sanjeev Goyal ⁴

1 - PWAPA Laboratory, Department of Physics, IIT Delhi
2 - PWAPA Laboratory, Department of Physics, IIT Delhi
3 - Department of Mathematics, IIT Delhi
4 - Department of ASH, RKG Institute of Technology Ghaziabad

تاریخ انتشار : 1397/12/10

کلید واژه: Electromagnetic soliton, Ion to electron mass ratio, Magnetic field, Peak amplitude, Temperature ratio, Width,

چکیده مقاله :

AbstractSolitons evolve in a nonlinear and dispersive medium whenever the balance is obtained between the effects of dispersion and nonlinearity. In this work, we study the impact of an external magnetic field on electromagnetic soliton profile in nonrelativistic two-fluid plasma using IMEX scheme. We found that different kinds of perturbing pulses create two solitons of same characteristics, propagating in opposite directions. For the present study, we considered three kinds of perturbing pulses of equal amplitudes but different widths as 0.003, 0.011 and 0.015. The propagation characteristics of the solitons, viz. crest of soliton amplitude, its width and velocity, are evaluated under the impact of an external magnetic field. In addition, we generalize the case by examining different plasma models by selecting different mass and temperature ratios of the ions and the electrons. This is done at the fixed external magnetic field strength of 0.06T and 0.01 T.