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Modeling of Stark Profiles in a Fluctuating Edge Tokamak Plasma
Author(s) -
Rosato J.,
Capes H.,
GodbertMouret L.,
Koubiti M.,
Marandet Y.,
Rosmej F.,
Stamm R.
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.200610061
Subject(s) - divertor , tokamak , stark effect , balmer series , plasma , physics , line (geometry) , turbulence , atomic physics , jet (fluid) , plasma diagnostics , enhanced data rates for gsm evolution , computational physics , spectral line , nuclear physics , emission spectrum , mechanics , telecommunications , geometry , mathematics , astronomy , computer science
Abstract We present a model for the spectroscopic density diagnostic of a recombining divertor plasma, by retaining the fluctuations of charged particles due to low frequency turbulence. A Stark broadening model for hydrogen isotopes is used for the local line shape, and in accordance with our model, averaged over a density fluctuation PDF for obtaining the apparent line shape. We present the results of our model for the Balmer 10 → 2 line and compare to an experimental spectrum observed in the JET divertor. (© 2006 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)