Irradiation of graphite cloth at various temperatures with deutrons and helium ions

Conference · Wed Jan 01 04:00:00 EST 1975

OSTI ID:4134981

Ekern, R; Das, S K; Kaminsky, M

Graphite cloth samples were irradiated with 100 keV deuterons and $sup 4$He$sup +$ ions at room temperature and at elevated temperatures. Scanning electron microscopy was used to examine the surfaces of irradiated and unirradiated graphite fibers. Irradiation at room temperature with $sup 4$He$sup +$ to a total dose of 3.1 x 10$sup 18$ ions cm$sup -2$ produces considerable flaking of individual fibers, which is not observed on unirradiated fibers. Identical irradiations at 400$sup 0$ and 800$sup 0$ with $sup 4$He$sup +$ did not produce any detectable flaking or other surface damage. The elevated temperatures apparently prevent an accumulation of helium in localized areas which in turn could cause flaking in near surface regions. Results obtained for deuteron bombardment of graphite cloth at room temperature and at 600$sup 0$C are also discussed. (auth)

• Research Organization: Argonne National Lab., Ill. (USA)
• DOE Contract Number: W-31109-ENG-38
• NSA Number: NSA-33-009061
• OSTI ID: 4134981
• Report Number(s): CONF-751125--73
• Country of Publication: United States
• Language: English

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