Transport equations for lower hybrid waves in a turbulent plasma

We consider the limits of validity of ray tracing and ray diffusion equations, for short wavelength waves propagating in a turbulent plasma background. We derive an improved transport equation for the electric field autocorrelation function, where first order diffraction effects associated with thes...

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Bibliographic Details
Published inJournal of plasma physics Vol. 81; no. 2; p. np
Main Authors Mendonça, J. T., Horton, W., Galvão, R. M. O., Elskens, Yves
Format Journal Article
LanguageEnglish
Published Cambridge, UK Cambridge University Press 01.04.2015
Cambridge University Press (CUP)
Subjects
Diffusion
Electric fields
Fluid dynamics
Fluid flow
Magnetic fields
Mathematical analysis
Perturbation
Physics
Plasma
Plasma Physics
Propagation
Transport equations
Turbulence
Turbulent flow
Wave propagation
Waves
current drive
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Summary:We consider the limits of validity of ray tracing and ray diffusion equations, for short wavelength waves propagating in a turbulent plasma background. We derive an improved transport equation for the electric field autocorrelation function, where first order diffraction effects associated with these waves are included. We apply this description to the case of lower hybrid (LH) waves propagating in non-stationary plasma where density perturbations can occur due to drift wave turbulence, as well as magnetic field perturbations due to MHD turbulence. This is relevant to the problem of LH current drive.
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ISSN:0022-3778
1469-7807
DOI:10.1017/S0022377814001032