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High dose fast neutron irradiation of highly oriented pyrolytic graphite

✍ Scribed by B.T. Kelly; J.E. Brocklehurst

Publisher: Elsevier Science
Year: 1971
Tongue: English
Weight: 487 KB
Volume: 9
Category: Article
ISSN: 0008-6223
DOI: 10.1016/0008-6223(71)90011-x

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✦ Synopsis

Highly oriented samples of well graphitised pyrolytic graphite have been irradiated to doses of 2.5 X 102* n.v.t. (Dido Equivalent Dose) at temperatures between 250°C and 470°C. Measurements have been made of the changes in dimensions parallel and perpendicular

to the deposition planes, density, thermal expansion coefficients parallel and perpendicular to the deposition plane and thermal conductivity parallel to the deposition planes. Samples of the same type but with varying crystallite perfection, and of high perfection doped with boron have been irradiated at temperatures of 900-1200°C to study the effects of crystallinity and doping on dimensional changes.

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