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The influence of plasma parameter variations on the interpretation of spectroscopic flux measurements in terms of particle fluxes is investigated by analytical and numerical methods. In addition to the temperature and density dependence of the local photon efficiencies, transport processes and spatial shifts of the source distribution result in variations of the efffective photon yields which are used to interpret measurements. Parameter studies for typical variations of edge conditions of the ASDEX Upgrade tokamak reveal changes by a factor of 3 for the ratio of the particle influx and corresponding photon flux.

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Authors: KALLENBACH A ET AL., Max-Planck-Institut für Plasmaphysik, Garching bei München (DE);PITCHER S, PPPL, Princeton (US)
Bibliographic Reference: Article: Plasma Physics and Controlled Fusion, Vol. 36 (1994) pp. 1299-1306
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