Modulational instability of ion-acoustic waves in a warm plasma

doi:10.1088/1009-1963/11/11/316

Abstract

Abstract Using the standard reductive perturbation technique, a nonlinear Schr?dinger equation is derived to study the modulational instability of finite-amplitude ion-acoustic waves in a non-magnetized warm plasma. It is found that the inclusion of ion temperature in the equation modifies the nature of the ion-acoustic wave stability and the soliton structures. The effects of ion plasma temperature on the modulational stability and ion-acoustic wave properties are investigated in detail.

Keywords: reductive perturbation technique warm plasma ion-acoustic waves modulational instability

Received: 07 March 2002
Revised: 10 May 2002
Accepted manuscript online:

PACS:	52.35.Py	(Macroinstabilities (hydromagnetic, e.g., kink, fire-hose, mirror, ballooning, tearing, trapped-particle, flute, Rayleigh-Taylor, etc.))
	52.35.Sb	(Solitons; BGK modes)
	52.35.Fp	(Electrostatic waves and oscillations (e.g., ion-acoustic waves))
	03.65.Ge	(Solutions of wave equations: bound states)

Fund: Project supported by the "Creation of Science and Technology" Foundation of Northwest Normal University, China (Grant No NWNU-KJCXGC-215).

Cite this article:

Xue Ju-Kui (薛具奎), Duan Wen-Shan (段文山), Lang He (郎和) Modulational instability of ion-acoustic waves in a warm plasma 2002 Chinese Physics 11 1184

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