Linear and nonlinear dust-acoustic waves in inhomogeneous dusty plasmas

Journal Article · Thu Jan 01 04:00:00 EST 1998 · Physics of Plasmas

DOI:https://doi.org/10.1063/1.872891· OSTI ID:565766

Singh, S V; Rao, N N ^[1]

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1. Theoretical Physics Division, Physical Research Laboratory, Navrangpura, Ahmedabad 380009 (India)

The propagation of linear, as well as nonlinear, dust-acoustic waves in inhomogeneous dusty plasmas consisting of electrons, ions, and charged dust particles is investigated. It is shown that the amplitude of the dust-acoustic waves is affected by the presence of the dust density inhomogeneity. Amplitudes of the linear and nonlinear dust-acoustic waves decrease (increase) as the waves propagate in the direction of increasing (decreasing) density. The wave amplitude is inversely proportional to the square root of the dust particle{close_quote}s density for the linear dust-acoustic waves. In the nonlinear case, to the lowest order and for the cold dust species, the wave amplitude is found to be directly proportional to n{sub d0}{sup {minus}1/4}. Various special cases are explicitly considered, and comparison with the corresponding results for the usual two-component electron-ion plasmas is also carried out. {copyright} {ital 1998 American Institute of Physics.}

• OSTI ID: 565766
• Journal Information: Physics of Plasmas, Journal Name: Physics of Plasmas Journal Issue: 1 Vol. 5; ISSN PHPAEN; ISSN 1070-664X
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
AMPLITUDES
DUSTS
NONLINEAR PROBLEMS
PLASMA
PLASMA IMPURITIES
PLASMA WAVES
SOLITONS
SOUND WAVES
WAVE PROPAGATION