TY - JOUR
T1 - LIBS detection of erosion/deposition and deuterium retention resulting from exposure to Pilot-PSI plasmas
AU - Piip, K.
AU - van der Meiden, H.J.
AU - Hämarik, L.
AU - Karhunen, J.
AU - Hakola, Antti
AU - Laan, M.
AU - Paris, P.
AU - Aints, M.
AU - Likonen, Jari
AU - Bystrov, K.
AU - Kozlova, J.
AU - Saloznik, A.
AU - Kelemen, M.
AU - Markelj, S.
PY - 2017/6/1
Y1 - 2017/6/1
N2 - Samples with tungsten (W) and tungsten-yttrium (Y)
coatings on molybdenum were exposed to plasmas simulating
the divertor conditions of ITER. The exposed surfaces
were studied using in-situ laser induced breakdown
spectroscopy diagnostics (LIBS) and the results were
compared to those obtained by other surface
characterization methods. Our results show that LIBS is a
reliable technique for in situ monitoring of erosion,
deposition, and fuel retention processes under
reactor-relevant conditions. In the regions of the
highest gross erosion the thickness of the remaining
tungsten layer is thinnest and at the central part of
samples both mixing and deposition of components took
place. LIBS also allowed reliable recording of D
retention. D accumulation is influenced by the surface
temperature as well as by the surface irregularities.
AB - Samples with tungsten (W) and tungsten-yttrium (Y)
coatings on molybdenum were exposed to plasmas simulating
the divertor conditions of ITER. The exposed surfaces
were studied using in-situ laser induced breakdown
spectroscopy diagnostics (LIBS) and the results were
compared to those obtained by other surface
characterization methods. Our results show that LIBS is a
reliable technique for in situ monitoring of erosion,
deposition, and fuel retention processes under
reactor-relevant conditions. In the regions of the
highest gross erosion the thickness of the remaining
tungsten layer is thinnest and at the central part of
samples both mixing and deposition of components took
place. LIBS also allowed reliable recording of D
retention. D accumulation is influenced by the surface
temperature as well as by the surface irregularities.
UR - http://www.scopus.com/inward/record.url?scp=85017103445&partnerID=8YFLogxK
U2 - 10.1016/j.jnucmat.2017.03.044
DO - 10.1016/j.jnucmat.2017.03.044
M3 - Article
SN - 0022-3115
VL - 489
SP - 129
EP - 136
JO - Journal of Nuclear Materials
JF - Journal of Nuclear Materials
ER -