Elastic–plastic adhesive impacts of tungsten dust with metal surfaces in plasma environments

TitleElastic–plastic adhesive impacts of tungsten dust with metal surfaces in plasma environments
Publication TypeJournal Article
Year of Publication2015
AuthorsS. Ratynskaia, P. Tolias, A. Shalpegin, L. Vignitchouk, M. de Angeli, I. Bykov, K. Bystrov, S. Bardin, F. Brochard, D. Ripamonti, N. den Harder, G. De Temmerman
JournalJournal of Nuclear Materials
Volume463
IssueAug
Pagination877 - 880
Abstract

Dust-surface collisions impose size selectivity on the ability of dust grains to migrate in scrape-off layer and divertor plasmas and to adhere to plasma-facing components. Here, we report first experimental evidence of dust impact phenomena in plasma environments concerning low-speed collisions of tungsten dust with tungsten surfaces: re-bouncing, adhesion, sliding and rolling. The results comply with the predictions of the model of elastic-perfectly plastic adhesive spheres employed in the dust dynamics code MIGRAINe for sub- to several meters per second impacts of micrometer-range metal dust.

DOI10.1016/j.jnucmat.2014.09.064
Division

PSI

Department

PSI-E

PID

114bd22b7808007b9f71d2f05cf56bdb

Alternate TitleJ. Nucl. Mater.

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