Thermal shock resistance of thick boron-doped diamond under extreme heat loads

TitleThermal shock resistance of thick boron-doped diamond under extreme heat loads
Publication TypeJournal Article
Year of Publication2011
AuthorsG. De Temmerman, J. Dodson, J. Linke, S. Lisgo, G. Pintsuk, S. Porro, G. Scarsbrook
JournalNuclear Fusion
Volume51
Issue5
Number5
Pagination052001
Date PublishedMay
Type of ArticleArticle
ISBN Number0029-5515
KeywordsFUSION-REACTORS, POWER
Abstract

Thick free-standing boron-doped diamonds were prepared by microwave plasma assisted chemical vapour deposition. Samples with a final thickness close to 5 mm and with lateral dimensions 25 x 25 mm were produced. The thermal shock resistance of the material was tested by exposure in the JUDITH electron gun to reproduce the conditions expected in a fusion reactor during plasma instabilities. Boron-doped diamond is shown to exhibit thermal shock resistance far better than current material of choice for a fusion reactor like tungsten, with no surface damage after exposure to 100 cycles at 2.5 GW m(-2) for 5 ms.

DOI10.1088/0029-5515/51/5/052001
Division

PSI

Department

PSI-E

PID

fd954df9d152a7bb4835d122614ac33e

Alternate TitleNucl. Fusion
LabelOA

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