Electrostatic solitary structures in a charge-varying pair–ion–dust plasma

Large-amplitude electrostatic solitary structures are investigated in an unmagnetized charge-varying pair–ion–dust plasma in which electrons and positrons have equal masses. Their spatial patterns are significantly modified by the presence of the positron component. In particular, it may be noted th...

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Bibliographic Details
Published in:Journal of plasma physics 2007-06, Vol.73 (3), p.403-415
Main Authors: TRIBECHE, MOULOUD, GOUGAM, LEILA AIT, BOUBAKOUR, NADIA, ZERGUINI, TAHA HOUSSINE
Format: Article
Language:English
Subjects:
Atoms & subatomic particles
Basic studies of specific kinds of plasmas
Dust
Dusty or complex plasmas
plasma crystals
Exact sciences and technology
Ions
Physics
Physics of gases, plasmas and electric discharges
Physics of plasmas and electric discharges
Plasma
Plasma physics
Shock waves
Solitary waves
Solitons
bgk modes
Waves, oscillations, and instabilities in plasmas and intense beams
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Summary:Large-amplitude electrostatic solitary structures are investigated in an unmagnetized charge-varying pair–ion–dust plasma in which electrons and positrons have equal masses. Their spatial patterns are significantly modified by the presence of the positron component. In particular, it may be noted that an addition of a small concentration of positrons abruptly reduces the potential pulse amplitude as well as the net negative charge residing on the dust grain surface. Under certain conditions, the solitary wave suffers the well-known anomalous damping leading to the development of collisionless shock waves. This investigation may be taken as a prerequisite for the understanding of the electrostatic solitary waves that may occur in space dusty plasmas.
ISSN:0022-3778
1469-7807
DOI:10.1017/S0022377806004636