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Acceleration of dust particles by vortex ring

Published online by Cambridge University Press:  04 June 2010

ZAHIDA EHSAN ,
N. L. TSINTSADZE ,
J. VRANJES ,
R. KHAN  and
S. POEDTS
ZAHIDA EHSAN
Affiliation:
Center for Plasma Astrophysics, K. U. Leuven, Celestijnenlaan 200B, 3001 Leuven, Belgium ([email protected]) National Center for Physics, Quaid-i-Azam University Campus, Islamabad, Pakistan Blackett Laboratory, Imperial College London, SW72BZ, UK
N. L. TSINTSADZE
Affiliation:
E. Andronikashvili Institute of Physics, 0171Georgia
J. VRANJES
Affiliation:
Center for Plasma Astrophysics, K. U. Leuven, Celestijnenlaan 200B, 3001 Leuven, Belgium ([email protected])
R. KHAN
Affiliation:
National Tokamak Fusion Program, PO Box 3329, PAEC, Islamabad, Pakistan
S. POEDTS
Affiliation:
Center for Plasma Astrophysics, K. U. Leuven, Celestijnenlaan 200B, 3001 Leuven, Belgium ([email protected])
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Abstract

It is shown that nonlinear interaction between large amplitude circularly polarized EM wave and dusty plasma leads to a non-stationary ponderomotive force, which in turn produces a vortex ring and magnetic field. Then the ensuing vortex ring in the direction of propagation of the pump wave can accelerate the micron-size dust particles, which are initially at rest and eventually form a non-relativistic dust jet. This effect is purely non-stationary and unlike linear vortices, dust particles do not rotate here. Specifically, it is pointed out that the vortex ring or closed filament can become potential candidate for the acceleration of dust in tokamak plasmas.

Type
Papers
Information
Journal of Plasma Physics , Volume 77 , Issue 2 , April 2011 , pp. 155 - 162
Copyright
Copyright © Cambridge University Press 2010

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