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On the parallel momentum balance in low pressure plasmas with an inhomogeneous magnetic field

A.I. Smolyakov1, X. Garbet and C. Bourdelle

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This paper describes the structure of the parallel momentum balance in low pressure plasmas with an inhomogeneous magnetic field. The parallel momentum balance equation is derived from magnetohydrodynamic equations by an expansion in the inverse magnetic field 1/B as a small parameter. Contributions of the gyroviscosity and inertia terms are clarified. It is shown that magnetic field curvature leads to important coupling of parallel flow with fluctuations of the electric field and plasma pressure.


PACS

52.30.Cv Magnetohydrodynamics (including electron magnetohydrodynamics)

52.25.Gj Fluctuation and chaos phenomena

52.65.Kj Magnetohydrodynamic and fluid equation

Subjects

Plasma physics

Dates

Issue 12 (December 2009)

Received 15 June 2009, accepted for publication 22 September 2009

Published 22 October 2009



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