Interaction of adhered beryllium proxy dust with transient and stationary plasmas

TitleInteraction of adhered beryllium proxy dust with transient and stationary plasmas
Publication TypeJournal Article
Year of Publication2018
AuthorsS. Ratynskaia, P. Tolias, M. de Angeli, D. Ripamonti, G. Riva, D. Aussems, T. Morgan
JournalNuclear Materials and Energy
Volume17
Pagination222-227
Date Published12/2018
Abstract

Tungsten (W) substrates with adhered beryllium (Be) proxy dust - copper, chromium, aluminium - have been exposed in the Magnum-PSI linear device. Their interaction with transient and stationary plasmas has been systematically studied under varying heat fluxes and magnetic field topologies. The dust remobilization activities, macro-morphological changes and chemical modifications induced by the plasma incidence are documented. Aluminium is identified to be the most suitable surrogate material due to the similar binary phase diagram and nearly identical evaporation rates. Extrapolation suggests that Be dust cannot survive on hot W surfaces but it can trigger mixed Be/W effects prior to its plasma removal.

DOI10.1016/j.nme.2018.11.007
Division

PSI

Department

PMI

PID

58671de5c0a1b4aecf13e5af1c268863

Alternate TitleNucl. Mater. Energy
LabelOA

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