Dust acoustic solitary wave with variable dust charge: Role of negative ions

Journal Article · Thu Sep 15 00:00:00 EDT 2005 · Physics of Plasmas

DOI:https://doi.org/10.1063/1.2041652· OSTI ID:20764575

Ghosh, Samiran ^[1]

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1. Government College of Engineering and Textile Technology, 4, Cantonment Road, Berhampore, Murshidabad 742101 West Bengal (India)

The role of negative ions on small but finite amplitude dust acoustic solitary wave including the effects of high and low charging rates of dust grains compared to the dust oscillation frequency in electronegative dusty plasma is investigated. In the case of high charging rate, the solitary wave is governed by Korteweg-de Vries (KdV) equation, but in the case of low charging rate, it is governed by KdV equation with a linear damping term. Numerical investigations reveal that in both cases dust acoustic soliton sharpens (flatens) and soliton width decreases (increases) with the increase of negative-ion number density (temperature). Also, the negative ions reduce the damping rate.

• OSTI ID: 20764575
• Journal Information: Physics of Plasmas, Vol. 12, Issue 9; Other Information: DOI: 10.1063/1.2041652; (c) 2005 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 1070-664X
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
AMPLITUDES
ANIONS
DAMPING
DUSTS
ELECTRON TEMPERATURE
ION ACOUSTIC WAVES
ION TEMPERATURE
KORTEWEG-DE VRIES EQUATION
OSCILLATIONS
PLASMA
PLASMA DENSITY
SOLITONS