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Abstract

In order to assess the existing data for hydrogen reflection and penetration into boundary plasmas, the spectral profile of H(alpha) emitted in front of a TEXTOR limiter has been measured with a high resolution spectrometer and calculated with the EIRENE code. The emission has been investigated for standard recycling conditions of hydrogen, but also for the case where this recycling is superimposed by a strong puff of hydrogenic molecules injected through a hole at the limiter tip. This latter case was used to calibrate the molecular transport model. The H(alpha) profiles during recycling have been observed and calculated for both a graphite and a stainless steel limiter. As expected, the number of reflected particles strongly increases in going from the C to the Fe limiter and seems to be slightly overestimated by present surface reflection databases.

Additional information

Authors: REITER D, Forschungszentrum Jülich GmbH, Institut für Plasmaphysik (DE);BOGEN P, Forschungszentrum Jülich GmbH, Institut für Plasmaphysik (DE);SAMM U, Forschungszentrum Jülich GmbH, Institut für Plasmaphysik (DE)
Bibliographic Reference: Article: Journal of Nuclear Materials, Vol. 196-198 (1992) pp. 1059-1064
Record Number: 199310387 / Last updated on: 1994-11-29
Category: PUBLICATION
Original language: en
Available languages: en