Effective laser-induced removal of co-deposited layers from plasma-facing components in a tokamak
2006 (English)In: Czechoslovak Journal of Physics, ISSN 0011-4626, E-ISSN 1572-9486, Vol. 56, B67-B72 p.Article in journal (Refereed) Published
An experimental set-up and spectroscopy diagnostic method for laser-induced fuel removal and decomposition of co-deposited layers on plasma-facing components from tokamaks are described. For irradiation of a graphite limiter tile from the TEXTOR tokamak Nd:YAG 3.5-ns pulse laser with a repetition rate of 10 Hz and single pulse energy of up to 0,8 J at 1,06 mu m has been used. The spectroscopy system allowed recording of spectra in the visible wavelength range including CII and D alpha spectral lines. The evolution of CII and Da spectral lines was observed pulse-by-pulse during the co-deposit removal. The efficient ablation of the 45 mu m thick co-deposit occured after approximately 50 laser pulses.
Place, publisher, year, edition, pages
2006. Vol. 56, B67-B72 p.
tokamaks, laser ablation, spectroscopy, co-deposit removal, graphite
IdentifiersURN: urn:nbn:se:kth:diva-16069DOI: 10.1007/s10582-006-0179-2ISI: 000241335800008ScopusID: 2-s2.0-33750737780OAI: oai:DiVA.org:kth-16069DiVA: diva2:334111
QC 20100525 QC 20111005. Conference: 22nd Symposium on Plasma Physics and Technology. Prague, CZECH REPUBLIC. JUN 26-29, 20062010-08-052010-08-052011-10-05Bibliographically approved