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Spectral Line Shape Modelling and Ion Temperature Fluctuations in Tokamak Edge Plasmas
Author(s) -
Marandet Y.,
Dufty J. W.
Publication year - 2006
Publication title -
contributions to plasma physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.531
H-Index - 47
eISSN - 1521-3986
pISSN - 0863-1042
DOI - 10.1002/ctpp.200610062
Subject(s) - tokamak , plasma , doppler effect , line (geometry) , ion , physics , exponential function , work (physics) , spectral line , advection , atomic physics , computational physics , spectral line shape , mechanics , thermodynamics , nuclear physics , quantum mechanics , mathematical analysis , geometry , mathematics
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)