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

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)

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 (0.1–0.3 ms) wide-aperture (up to 2 cm2) electron beam as a heating device provides powerful energy loads at a tungsten target with FHF> 250 MJ m−2 s−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.

Original languageEnglish
Pages (from-to)494-498
Number of pages5
JournalNuclear Materials and Energy
Volume12
DOIs
Publication statusPublished - 1 Aug 2017

Keywords

  • LOADS

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