TY  - JOUR
AU  - Lipa, M.
AU  - Schunke, B.
AU  - Gil, Ch.
AU  - Bucalossi, J.
AU  - Voitsenya, V. S.
AU  - Konovalov, V.
AU  - Vukolov, K.
AU  - Balden, M.
AU  - De Temmerman, G.
AU  - Oelhafen, P.
AU  - Litnovsky, A.
AU  - Wienhold, P.
TI  - Analyses of metallic first mirror samples after long term plasma exposure in Tore Supra
JO  - Fusion engineering and design
VL  - 81
SN  - 0920-3796
CY  - New York, NY [u.a.]
PB  - Elsevier
M1  - PreJuSER-57841
PY  - 2006
N1  - Record converted from VDB: 12.11.2012
AB  - Metallic mirrors are foreseen in ITER diagnostic systems as optical elements directly viewing the plasma radiation. In the frame of an EFDA contract, metallic mirror samples have been exposed for long pulse plasma discharges in Tore Supra (TS) in order to investigate surface modifications caused by erosion and re-deposition processes. Three different materials have been selected: mono-crystalline molybdenum (mc-Mo), polycrystalline stainless steel (SS) and copper (Cu). The mc-Mo samples showed after TS exposure almost no surface roughness modifications and the lowest net-erosion. A slight reflectivity reduction, most pronounced in the near UV, is attributed to light absorption in a thin carbon deposit. Cu mirrors showed by far the highest surface roughness, erosion and diffusive reflectivity. Comparative laboratory glow discharge experiments with virgin reference samples and numerical simulations of erosion/deposition confirm the dominant contribution of conditioning procedures to erosion of mirrors exposed (without shutter protection) in Tore Supra. (c) 2005 Elsevier B.V. All rights reserved.
KW  - J (WoSType)
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000235599500029
DO  - DOI:10.1016/j.fusengdes.2005.07.017
UR  - https://juser.fz-juelich.de/record/57841
ER  -