%0 Journal Article
%A Huber, Alexander
%A Brezinsek, S.
%A Kirschner, A.
%A Ström, P.
%A Sergienko, G.
%A Borodkina, Irina
%A Douai, D.
%A Jachmich, S.
%A Linsmeier, C. h.
%A Lomanowski, B.
%A Matthews, G. F.
%A Mertens, P. h.
%T Determination of tungsten sources in the JET-ILW divertor by spectroscopic imaging in the presence of a strong plasma continuum
%J Nuclear materials and energy
%V 18
%@ 2352-1791
%C Amsterdam [u.a.]
%I Elsevier
%M FZJ-2019-04072
%P 118 - 124
%D 2019
%X 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.
%F PUB:(DE-HGF)16
%9 Journal Article
%U <Go to ISI:>//WOS:000460107500022
%R 10.1016/j.nme.2018.12.009
%U https://juser.fz-juelich.de/record/864238