Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7987548 | Nuclear Materials and Energy | 2017 | 5 Pages |
Abstract
Beryllium film deposition was studied with cavity samples in remote areas of the inner and outer JET divertor and below divertor tile 5 during the 2011-2012 campaign with the ITER-like wall. Predominantly beryllium films were formed inside the cavities with some additional carbon, the ratio Be/C was >2. These deposited layers had high D/(Be+C) ratios of about 0.3. The formation of these films is mainly due to sticking of beryllium-containing particles with low sticking coefficients <0.5. The observed surface loss probabilities depend on the position in the divertor. The particles responsible for film deposition originated from the location of in the divertor strike points.
Keywords
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Physical Sciences and Engineering
Energy
Nuclear Energy and Engineering
Authors
S. Krat, M. Mayer, U. von Toussaint, P. Coad, A. Widdowson, Yu. Gasparyan, A. Pisarev, JET contributors JET contributors,