Details

Autor(en) / Beteiligte

• Kreter, A
• Brezinsek, S
• Rubel, M
• Emmoth, B
• Freisinger, M
• Pelicon, P
• Philipps, V
• Schmitz, O
• Sundelin, P
• Sergienko, G
• team, TEXTOR

Titel

Deuterium retention in different carbon materials exposed in TEXTOR

Ist Teil von

• Journal of physics. Conference series, 2008-03, Vol.100 (6), p.062024

Ort / Verlag

Bristol: IOP Publishing

Erscheinungsjahr

2008

Link zum Volltext

Quelle

Free E-Journal (出版社公開部分のみ）

Beschreibungen/Notizen

• CFC NB31, CFC DMS780 and fine-grain graphite EK98 were simultaneously exposed in the SOL of TEXTOR in order to measure the retention of deuterium in the material bulk. After exposure, the samples were analysed by thermal desorption spectrometry and nuclear reaction analysis with a conventional beam as well as with a microbeam. The deuterium retention amounts (2–4)·1021 D/m2 for the incident fluence of ~2·1025 D/m2. The retention values are similar for both CFC materials and lower by ~20–40% for EK98. The retention in all three materials scales roughly with a square root of incident fluence without saturation for the range of fluences obtained. The majority of deuterium is stored in a surface layer of <8 μm. However, in NB31 deuterium is detectable as deep as 80 μm. The in-bulk retention estimated for a TEXTOR experimental campaign of ≈7500 s of plasma has a contribution of ≈10% to the total retention, which is dominated by deuterium-carbon co-deposition.