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Effect of ionization on ion acoustic solitary waves in a collisional dusty plasma

Published online by Cambridge University Press:  22 July 2005

SAMIRAN GHOSH
Affiliation:
College of Textile Technology, Berhampore 742101, Murshidabad, West Bengal, India (sran_g@yahoo.com)

Abstract

The nonlinear wave propagation characteristics of ion acoustic (IA) solitary waves in a dusty plasma, i.e. dust ion acoustic (DIA) solitary waves in the presence of ionization, collisions of ions with dust grains and with the background neutral gas, have been investigated by employing a reductive perturbation technique. It has been found that the nonlinear DIA wave is governed by Korteweg–de Vries (KdV) equation with a positive or negative linear damping term. It has also been found that the ionization instability leads to the exponential growth of the DIA solitary wave amplitude with time, whereas ion–dust and ion–neutral collisions reduce the growth rate.

Type
Papers
Copyright
2005 Cambridge University Press

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