TY  - JOUR
AU  - Huber, Alexander
AU  - Brezinsek, S.
AU  - Kirschner, A.
AU  - Ström, P.
AU  - Sergienko, G.
AU  - Borodkina, Irina
AU  - Douai, D.
AU  - Jachmich, S.
AU  - Linsmeier, C. h.
AU  - Lomanowski, B.
AU  - Matthews, G. F.
AU  - Mertens, P. h.
TI  - Determination of tungsten sources in the JET-ILW divertor by spectroscopic imaging in the presence of a strong plasma continuum
JO  - Nuclear materials and energy
VL  - 18
SN  - 2352-1791
CY  - Amsterdam [u.a.]
PB  - Elsevier
M1  - FZJ-2019-04072
SP  - 118 - 124
PY  - 2019
AB  - The identification of the sources of atomic tungsten and the measurement of their radiation distribution in front of all plasma-facing components has been performed in JET with the help of two digital cameras with the same two-dimensional view, equipped with interference filters of different bandwidths centred on the W I (400.88 nm) emission line. A new algorithm for the subtraction of the continuum radiation was successfully developed and is now used to evaluate the W erosion even in the inner divertor region where the strong recombination emission is dominating over the tungsten emission. Analysis of W sputtering and W redistribution in the divertor by video imaging spectroscopy with high spatial resolution for three different magnetic configurations was performed. A strong variation of the emission of the neutral tungsten in toroidal direction and corresponding W erosion has been observed. It correlates strongly with the wetted area with a maximal W erosion at the edge of the divertor tile.
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000460107500022
DO  - DOI:10.1016/j.nme.2018.12.009
UR  - https://juser.fz-juelich.de/record/864238
ER  -