Author/Authors :
G?sior، نويسنده , , P. and Irrek، نويسنده , , F. and Petersson، نويسنده , , P. and Penkalla، نويسنده , , H.J. and Rubel، نويسنده , , M. and Schweer، نويسنده , , B. and Sundelin، نويسنده , , P. and Wessel، نويسنده , , E. and Linke، نويسنده , , J. and Philipps، نويسنده , , V. and Emmoth، نويسنده , , B. and Wolowski، نويسنده , , J. and Hirai، نويسنده , , T.، نويسنده ,
Abstract :
Laser-induced fuel desorption and ablation of co-deposited layers on limiter plates from the TEXTOR tokamak have been studied. Gas phase composition was monitored in situ, whereas the ex situ studies have been focused on the examination of irradiated surfaces and broad analysis of dust generated by ablation of co-deposits. The size of the dust grains is in the range of few nanometers to hundreds of micrometers. These are fuel-rich dust particles, as determined by nuclear reaction analysis. The presence of deuterium in dust indicates that not all fuel species are transferred to the gas phase during irradiation. This also suggests that photonic removal of fuel and the ablation of co-deposit from plasma-facing components may lead to the redistribution of fuel-containing dust to surrounding areas.
