Spectral Line Shape Modelling and Ion Temperature Fluctuations in Tokamak Edge Plasmas

In this work, we use a passive advection model for ion temperature fluctuations, in order to investigate their effects on Doppler Spectral line shapes. The relevance of the model is discussed in the framework of the Braginskii equations, and the subsequent Probability Density Function evaluation rel...

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Bibliographic Details
Published in:Contributions to plasma physics (1985) 2006-09, Vol.46 (7-9), p.672-677
Main Authors: Marandet, Y., Dufty, J. W.
Format: Article
Language:English
Subjects:
edge turbulence
Exact sciences and technology
line shapes
Magnetic confinement and equilibrium
Optical (ultraviolet, visible, infrared) measurements
passive scalar
Physics
Physics of gases, plasmas and electric discharges
Physics of plasmas and electric discharges
Plasma diagnostic techniques and instrumentation
Plasma interactions (nonlaser)
Plasma turbulence
Plasma-wall interactions
boundary layer effects
Plasma-wall interactions
boundary layer effects
plasma sheaths
probability density function
Spectroscopy
Tokamaks
Waves, oscillations, and instabilities in plasmas and intense beams
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Summary:In this work, we use a passive advection model for ion temperature fluctuations, in order to investigate their effects on Doppler Spectral line shapes. The relevance of the model is discussed in the framework of the Braginskii equations, and the subsequent Probability Density Function evaluation relies on results obtained in neutral fluids. The resulting Doppler line profiles are shown to exhibit characteristic exponential tails. (© 2006 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)
ISSN:0863-1042
1521-3986
DOI:10.1002/ctpp.200610062