NDLI: Study of Dust Morphology , Composition and Surface Growth under ITER-relevant Energy Load in Plasma Gun QSPA-facility

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Study of Dust Morphology , Composition and Surface Growth under ITER-relevant Energy Load in Plasma Gun QSPA-facility

Content Provider	Semantic Scholar
Author	Khimchenko, L. N. Federici, Gianfranco Gureev, Victor Mihaylovich Kamneva, S. A. Klimov, N. S. Korshunov, S. N. Kuteev, Boris V. Linke, J. Loarte, Alberto Martynenko, Yury V. Merola, Mario Podkovirov, V. L. Zhitlukhin, A. M.
Copyright Year	2008
Abstract	The experimental date on structure, chemical and X-ray analysis of re-deposited material from eroded CFC and W macrobrush plates designed and manufactured in EU under ITER ELMs and disruptions heat loads are presented. Experiments were realized in plasma gun QSPA facility. Each targets were exposed to a large number of repetitive pulse of heat loads 0.5-2.0 MJ/m with 0.5 msec time duration. The principal result of impact I type ELMs-like plasma on material was in formation the films, consisted of the dust particles with spherical shapes, typical dimensions of 0.02-2.0 mkm and fractal surface structures (“cauliflower”). In dust particles the Auger spectrometer/SIMS analysis found out many of elements from vacuum chamber surface. X-ray crystal analysis show that tungsten re-eroded in the form of tungstencarbide (nearby 70%). The analysis of small angle scattering gives “halo” picture, which indicate of 10-20 nm clusters. The calculation for ITER of sorption surfaces (SSA) of dust particles are presented.
File Format	PDF HTM / HTML
Alternate Webpage(s)	https://www-pub.iaea.org/MTCD/Meetings/FEC2008/ex_p4-13.pdf
Alternate Webpage(s)	http://www-pub.iaea.org/MTCD/Meetings/FEC2008/ex_p4-13.pdf
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

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