Stability of oblique modulation of ion-acoustic waves in a multicomponent plasma

Journal Article · Sat Jan 01 04:00:00 EST 1994 · Physics of Plasmas; (United States)

DOI:https://doi.org/10.1063/1.870561· OSTI ID:6930290

Mishra, M K; Chhabra, R S; Sharma, S R ^[1]

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1. Department of Physics, University of Rajasthan, Jaipur-302004 (India)

The stability of oblique modulation of ion-acoustic waves in a collisionless plasma consisting of two cold-ion species with different masses, concentrations, and charge states, and hot isothermal electrons is studied. Using the Krylov--Bogoliubov--Mitropolosky (KBM) perturbation technique, a nonlinear Schroedinger equation governing the slow modulation of the wave amplitude, is derived for the system. It is found that the presence of second-ion species significantly changes the instability domain in the [ital k]-[phi] plane. The effect of charge state, concentration, and mass of second-ion species on the modulational instability is discussed in detail. The predictions of the theory are found to be in good agreement with the experimental observations.

• OSTI ID: 6930290
• Journal Information: Physics of Plasmas; (United States), Journal Name: Physics of Plasmas; (United States) Vol. 1:1; ISSN PHPAEN; ISSN 1070-664X
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700340* -- Plasma Waves
Oscillations
& Instabilities-- (1992-)
AMPLITUDES
CHARGED PARTICLES
COLLISIONLESS PLASMA
DIFFERENTIAL EQUATIONS
EQUATIONS
ION ACOUSTIC WAVES
ION WAVES
IONS
MODULATION
MULTICHARGED IONS
PARTIAL DIFFERENTIAL EQUATIONS
PERTURBATION THEORY
PLASMA
PLASMA WAVES
SCHROEDINGER EQUATION
STABILITY
WAVE EQUATIONS