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Derivation of radial electric fields using kinetic theory in tokamak

Published online by Cambridge University Press:  16 January 2013

K. NOORI ,
P. KHORSHID  and
M. AFSARI
K. NOORI
Affiliation:
Department of Physics, Azarbaijan University of Tarbiat Moallem, Tabriz, Iran
P. KHORSHID
Affiliation:
Department of Physics, Islamic Azad University, Mashhad Branch, Mashhad, Iran ([email protected])
M. AFSARI
Affiliation:
Department of Physics, Azarbaijan University of Tarbiat Moallem, Tabriz, Iran
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Abstract

In the current study, radial electric field with fluid equations has been calculated. The calculation started with kinetic theory, Boltzmann and momentum balance equations were derived, the negligible terms compared with others were eliminated, and the radial electric field expression in steady state was derived. As mentioned in previous researches, this expression includes all types of particles such as electrons, ions, and neutrals. The consequence of this solution reveals that three major driving forces contribute in radial electric field: radial pressure gradient, poloidal rotation, and toroidal rotation; rotational terms mean Lorentz force. Therefore, radial electric field and plasma rotation are connected through the radial momentum balance.

Type
Papers
Information
Journal of Plasma Physics , Volume 79 , Issue 5 , October 2013 , pp. 513 - 517
Copyright
Copyright © Cambridge University Press 2013 

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