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; I.V. Kandaurov; A.A. Kasatov; V.V. Kurkuchekov; K.I. Mekler; V.A. Popov; A.A. Shoshin; D.I. Skovorodin; Yu.A. Trunev; A.A. Vasilyev

Nuclear Materials and Energy (Aug 2017)

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,
I.V. Kandaurov,
A.A. Kasatov,
V.V. Kurkuchekov,
K.I. Mekler,
V.A. Popov,
A.A. Shoshin,
D.I. Skovorodin,
Yu.A. Trunev,
A.A. Vasilyev

Affiliations

L.N. Vyacheslavov: Budker Institute of Nuclear Physic SB RAS, Novosibirsk, 630090, Russia; Novosibirsk State University, Novosibirsk, 630090, Russia; Corresponding author.
A.S. Arakcheev: Budker Institute of Nuclear Physic SB RAS, Novosibirsk, 630090, Russia; Novosibirsk State University, Novosibirsk, 630090, Russia; Novosibirsk State Technical University, Novosibirsk, 630092, Russia
A.V. Burdakov: Budker Institute of Nuclear Physic SB RAS, Novosibirsk, 630090, Russia; Novosibirsk State Technical University, Novosibirsk, 630092, Russia
I.V. Kandaurov: Budker Institute of Nuclear Physic SB RAS, Novosibirsk, 630090, Russia
A.A. Kasatov: Budker Institute of Nuclear Physic SB RAS, Novosibirsk, 630090, Russia; Novosibirsk State University, Novosibirsk, 630090, Russia
V.V. Kurkuchekov: Budker Institute of Nuclear Physic SB RAS, Novosibirsk, 630090, Russia; Novosibirsk State University, Novosibirsk, 630090, Russia
K.I. Mekler: Budker Institute of Nuclear Physic SB RAS, Novosibirsk, 630090, Russia
V.A. Popov: Budker Institute of Nuclear Physic SB RAS, Novosibirsk, 630090, Russia; Novosibirsk State University, Novosibirsk, 630090, Russia
A.A. Shoshin: Budker Institute of Nuclear Physic SB RAS, Novosibirsk, 630090, Russia; Novosibirsk State University, Novosibirsk, 630090, Russia
D.I. Skovorodin: Budker Institute of Nuclear Physic SB RAS, Novosibirsk, 630090, Russia; Novosibirsk State University, Novosibirsk, 630090, Russia
Yu.A. Trunev: Budker Institute of Nuclear Physic SB RAS, Novosibirsk, 630090, Russia; Novosibirsk State University, Novosibirsk, 630090, Russia
A.A. Vasilyev: Budker Institute of Nuclear Physic SB RAS, Novosibirsk, 630090, Russia; Novosibirsk State University, Novosibirsk, 630090, Russia

Journal volume & issue: Vol. 12
pp. 494 – 498

Abstract

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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.

Published in Nuclear Materials and Energy

ISSN: 2352-1791 (Online)
Publisher: Elsevier
Country of publisher: United Kingdom
LCC subjects: Technology: Electrical engineering. Electronics. Nuclear engineering: Nuclear engineering. Atomic power
Website: http://www.journals.elsevier.com/nuclear-materials-and-energy/

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