Observation of dust particles ejected from the tungsten surface by transient heat flux with small-angle scattering of cw laser light
L.N. Vyacheslavov, A.S. Arakcheev, A.V. Burdakov and 9 more
Nuclear Materials and Energy · 2017
doi:10.1016/j.nme.2017.01.023 (opens in a new tab)
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Abstract
A new test facility for experimental simulation of transient heat load expected in the ITER divertor during unmitigated events is developed. Application of a long-pulse (0.1–0.3ms) wide-aperture (up to 2cm2) electron beam as a heating device provides powerful energy loads at a tungsten target with FHF> 250MJm−2s−0.5. Dynamics of tungsten particles in the ablation plume is investigated with a novel for PSI experiments small-angle laser light scattering technique. The threshold of intense droplet generation and dynamics of particles sizes are estimated.
Abstract licence: CC BY-NC-ND
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