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Effect of q-non-extensive distribution of electrons on the plasma sheath floating potential

Published online by Cambridge University Press:  09 April 2014

M. Sharifian ,
H. R. Sharifinejad ,
M. Borhani Zarandi  and
A. R. Niknam
M. Sharifian*
Affiliation:
Atomic and Molecular Group, Department of Physics, Yazd University, P.O. Box: 891995-741, Yazd, Iran
H. R. Sharifinejad
Affiliation:
Department of Physics, Yazd Branch, Islamic Azad University, Yazd, Iran
M. Borhani Zarandi
Affiliation:
Atomic and Molecular Group, Department of Physics, Yazd University, P.O. Box: 891995-741, Yazd, Iran
A. R. Niknam
Affiliation:
Laser and Plasma Research Institute, Shahid Beheshti University, G. C., P.O. Box: 198396-3113, Evin, Tehran, Iran
*
†Email address for correspondence: [email protected]
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Abstract

In this paper, a collisionless unmagnetized plasma sheath consisting of electrons following non-extensive q-distribution, and cold mobile inertial ions is studied in the stationary state. In this type of plasma with non-Maxwellian electron distribution (Tsallis statistical mechanics), the effective electron temperature (Te, eff) and electron screening temperature (Te,*) are evaluated. The other plasma sheath phenomena such as the Bohm sheath criterion, Debye shielding, floating potential, and sheath length are investigated in the presence of q-non-extensive velocity-distributed electrons. It is observed that above-mentioned phenomena depend significantly on the non-extensive parameter q.

Type
Papers
Information
Journal of Plasma Physics , Volume 80 , Issue 4 , August 2014 , pp. 607 - 618
Copyright
Copyright © Cambridge University Press 2014 

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