Tungsten dust remobilization under steady-state and transient plasma conditions

TitleTungsten dust remobilization under steady-state and transient plasma conditions
Publication TypeJournal Article
Year of Publication2017
AuthorsS. Ratynskaia, P. Tolias, M. de Angeli, V. Weinzettl, J. Matejicek, I. Bykov, D.L Rudakov, L. Vignitchouk, E. Thorén, G. Riva, D. Ripamonti, T. Morgan, R. Panek, G. De Temmerman
JournalNuclear Materials and Energy
Volume12
Pagination569-574
Date Published08/2017
Abstract

Remobilization is one of the most prominent unresolved fusion dust-relevant issues, strongly related to the lifetime of dust in plasma-wetted regions, the survivability of dust on hot plasma-facing surfaces and the formation of dust accumulation sites. A systematic cross-machine study has been initiated to investigate the remobilization of tungsten micron-size dust from tungsten surfaces implementing a newly developed technique based on controlled pre-adhesion by gas dynamics methods. It has been utilized in a number of devices and has provided new insights on remobilization under steady-state and transient conditions. The experiments are interpreted with contact mechanics theory and heat conduction models.

DOI10.1016/j.nme.2016.10.021
Division

PSI

Department

PSI-E

PID2d881db8fd1e8fe4371ec31192fed1a0
Alternate TitleNucl. Mater. Energy
LabelOA

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