http://pop.aip.org/resource/1/phpaen/v19/i10/p102108_s1?isAuthorized=nopositive ions
A. K. Shaw1,2, S. Kar2, and K. S. Goswami1
1Centre of Plasma Physics, Institute for Plasma Research, Sonapur–782 402, Guwahati, Assam, India
2Institute for Plasma Research, Bhat, Gandhinagar–382 428, Gujarat, India
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(Received 8 February 2012; accepted 3 October 2012; published online 17 October 2012)
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Abstract
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The properties of a magnetized multi-component (two species of positive ions, negative ions and electrons) plasma sheath with finite positive ion temperature are studied. By using three fluid hydrodynamic model and some dimensionless variables, the ion (both lighter and heavier positive ions, and negative ions) densities, the ion (only for positive ions) velocities, and electric potential inside the sheath are investigated. In addition, the absence and presence of magnetic field and the orientation of magnetic field are considered. It is noticed that, with increase of positive ion temperature, the lighter positive ion density peaks increase only at the sheath edge and shift towards the sheath edge for both absence and presence of magnetic field. For heavier positive ions, in the absence of magnetic field, the density peaks increase at the sheath edge. But in the
presence of magnetic field, the density fluctuations increase at the sheath edge. For both the cases, the density peaks shift towards the sheath edge.
© 2012 American Institute of Physics
Article Outline
INTRODUCTION
BASIC EQUATIONS AND ASSUMPTIONS
DIMENSIONLESS EQUATIONS AND VARIABLES
NUMERICAL RESULTS AND DISCUSSION
Positive ion temperature effect on particle density
Effect of positive ion temperature on ion velocity
Effect of positive ion temperature on electric potential
Variation of ion density with magnetic field angle
SUMMARY