Wall damage due to oblique high velocity dust impactsVisa övriga samt affilieringar
2026 (Engelska)Ingår i: Fusion engineering and design, ISSN 0920-3796, E-ISSN 1873-7196, Vol. 225, artikel-id 115675Artikel i tidskrift (Refereegranskat) Published
Abstract [en]
Runaway electron termination on plasma facing components can trigger material explosions that are accompanied by the expulsion of fast solid debris. Due to the large kinetic energies of the ejected dust particles, their subsequent mechanical impacts on the vessel lead to extensive cratering. Earlier experimental studies of high velocity micrometric tungsten dust collisions with tungsten plates focused exclusively on normal impacts. Here, oblique high velocity tungsten-on-tungsten mechanical impacts are reproduced in a controlled manner by a two-stage light gas gun shooting system. The strong dependence of the crater characteristics and crater morphology on the incident angle is documented. A reliable empirical damage law is extracted for the dependence of the crater depth on the incident angle.
Ort, förlag, år, upplaga, sidor
Elsevier BV , 2026. Vol. 225, artikel-id 115675
Nyckelord [en]
Dust in tokamaks, Light gas guns, Mechanical impacts, Oblique impacts, Runaway electron termination
Nationell ämneskategori
Fusion, plasma och rymdfysik Teknisk mekanik
Identifikatorer
URN: urn:nbn:se:kth:diva-379296DOI: 10.1016/j.fusengdes.2026.115675ISI: 001693945400001Scopus ID: 2-s2.0-105034487144OAI: oai:DiVA.org:kth-379296DiVA, id: diva2:2053638
Anmärkning
QC 20260417
2026-04-172026-04-172026-04-17Bibliografiskt granskad