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This article describes how for the first time the transfers of highly ionized Rydberg states of krypton and sulphur, excited by charge-exchange, have been measured absolutely in the visible spectrum and UV spectrum in the ASDEX Tokamak and compared with theoretical model calculations. The measurements pointed to the conclusion that fully ionized metallic impurities (Fe, Ni,...) can be detected in near-reactor fusion systems with the help of charge-exchange recombination spectroscopy, up to the concentration levels of 0.1% of the electron density. The influences of fine structure splitting, as well as the Zeeman and the Stark effects on the line profile, were used to derive selection criteria for optimum ion temperature measurement via Doppler broadening.

Additional information

Authors: HOFMANN J V, Max-Planck-Institut für Plasmaphysik, Garching bei München (DE)
Bibliographic Reference: Report: IPP III/141 DE (1989)
Availability: Available from Max-Planck-Institut für Plasmaphysik, 8046 Garching bei München (DE)
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