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1. Spatial radiation profiles in the ASDEX Upgrade divertor for detached plasmas

Author

Wenzel, U., Thoma, A., Dux, R., Fuchs, Ch., Herrmann, A., Hirsch, St., Kallenbach, A., Kastelewicz, H., Laux, M., Mast, F., and Napiontek, B.

Abstract

In this paper we describe impurity line emission measurements in the divertor of ASDEX Upgrade during high power neutral beam heated discharges. We focus on detached conditions where the dominating part of the radiation comes from the X-point region. Spatially resolved line emission in the VUV and visible spectral region of the intrinsic carbon and additionally puffed impurities (neon and nitrogen) is presented. A simple interpretation of the line emission profiles is given and they are also compared to the results of bolometry.

Published
1997
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