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@ARTICLE{Garkusha:824135,
author = {Garkusha, I. E. and Aksenov, N. N. and Byrka, O. V. and
Makhlaj, V. A. and Herashchenko, S. S. and Malykhin, S. V.
and Petrov, Y. Y. and Staltsov, V. V. and Surovitskiy, S. V.
and Wirtz, Marius and Linke, Jochen and Sadowski, M. J. and
Skladnik-Sadowska, E.},
title = {{S}imulation of {P}lasma-{S}urface {I}nteractions in a
{F}usion {R}eactor by {M}eans of {QSPA} {P}lasma {S}treams:
{R}ecent {R}esults and {P}rospects},
journal = {Physica scripta},
volume = {91},
number = {9},
issn = {0031-8949},
address = {Bristol},
publisher = {IoP Publ.},
reportid = {FZJ-2016-06756},
pages = {094001},
year = {2016},
abstract = {This paper is devoted to plasma–surface interaction
issues at high heat-loads which are typical for fusion
reactors. For the International Thermonuclear Experimental
Reactor (ITER), which is now under construction, the
knowledge of erosion processes and the behaviour of various
constructional materials under extreme conditions is a very
critical issue, which will determine a successful
realization of the project. The most important
plasma–surface interaction (PSI) effects in 3D geometry
have been studied using a QSPA Kh-50 powerful
quasi-stationary plasma accelerator. Mechanisms of the
droplet and dust generation have been investigated in
detail. It was found that the droplets emission from
castellated surfaces has a threshold character and a cyclic
nature. It begins only after a certain number of the
irradiating plasma pulses when molten and shifted material
is accumulated at the edges of the castellated structure.
This new erosion mechanism, connected with the edge effects,
results in an increase in the size of the emitted droplets
(as compared with those emitted from a flat surface). This
mechanism can even induce the ejection of sub-mm particles.
A concept of a new-generation QSPA facility, the current
status of this device maintenance, and prospects for further
experiments are also presented},
cin = {IEK-2},
ddc = {530},
cid = {I:(DE-Juel1)IEK-2-20101013},
pnm = {174 - Plasma-Wall-Interaction (POF3-174)},
pid = {G:(DE-HGF)POF3-174},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000384126400005},
doi = {10.1088/0031-8949/91/9/094001},
url = {https://juser.fz-juelich.de/record/824135},
}