Effect of trapped electrons on soliton propagation in a plasma having a density gradient

A Korteweg–deVries equation with an additional term due to the density gradient is obtained using reductive perturbation technique in an unmagnetized plasma having a density gradient, finite temperature ions, and two-temperature nonisothermal (trapped) electrons. This equation is solved to get the s...

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Bibliographic Details
Published in:Physics of plasmas 2009-03, Vol.16 (3)
Main Authors: Aziz, Farah, Stroth, Ulrich
Format: Article
Language:English
Subjects:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
ELECTRON TEMPERATURE
ION TEMPERATURE
KORTEWEG-DE VRIES EQUATION
PHASE VELOCITY
PLASMA
PLASMA DENSITY
SOLITONS
TRAPPED ELECTRONS
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Summary:A Korteweg–deVries equation with an additional term due to the density gradient is obtained using reductive perturbation technique in an unmagnetized plasma having a density gradient, finite temperature ions, and two-temperature nonisothermal (trapped) electrons. This equation is solved to get the solitary wave solution using sine-cosine method. The phase velocity, soliton amplitude, and width are examined under the effect of electron and ion temperatures and their concentrations. The effect of ion (electron) temperature is found to be more significant in the presence of larger (smaller) number of trapped electrons in the plasma.
ISSN:1070-664X
1089-7674
DOI:10.1063/1.3091934