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Abstract

This paper reports on a numerical analysis of luminescence signals observed during pellet injection into magnetically confined plasmas. Data from the ASDEX tokamak and the Wendelstein W7-AS advanced stellarator are considered. The influence of the safety factor q and other plasma parameters on the luminescence signals is discussed. Attempts to clarify the validity of the so-called neutral gas shielding model and an extension of it that takes into account the influence of resonant surfaces on the ablation process are presented. It is shown that resonant values play only a minor role in the appearance of minima in the luminescence signals.

Additional information

Authors: BALDZUHN J, Max-Planck-Institut für Plasmaphysik, Garching bei München (DE);SANDMANN W, Max-Planck-Institut für Plasmaphysik, Garching bei München (DE);W7-AS TEAM, Max-Planck-Institut für Plasmaphysik, Garching bei München (DE)
Bibliographic Reference: Article: Plasma Physics and Controlled Fusion, Vol. 35 (1993) pp. 1413-1431
Record Number: 199311506 / Last updated on: 1994-11-28
Category: PUBLICATION
Original language: en
Available languages: en