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

G. De Temmerman, J. Dodson, J. Linke, S. Lisgo, G. Pintsuk, S. Porro, G. Scarsbrook

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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 × 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. © 2011 IAEA, Vienna.

Original languageEnglish
Article number052001
JournalNuclear Fusion
Volume51
Issue number5
DOIs
Publication statusPublished - May 2011

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    De Temmerman, G., Dodson, J., Linke, J., Lisgo, S., Pintsuk, G., Porro, S., & Scarsbrook, G. (2011). Thermal shock resistance of thick boron-doped diamond under extreme heat loads. Nuclear Fusion, 51(5), [052001]. https://doi.org/10.1088/0029-5515/51/5/052001