著者

Kinoshita Chiken Nakai Kiyomichi Fukumoto Ken-ichi Kutsuwada Masanori Nogita Kazuhiro

出版者

Tohoku University

雑誌

Science reports of the Research Institutes, Tohoku University. Ser. A, Physics, chemistry and metallurgy (ISSN:00408808)

巻号頁・発行日

vol.35, no.2, pp.417-425, 1991-03-05

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The cascade damage and its kinetic behavior in various kinds of ceramics irradiated with fission- and fusion-neutrons have been examined through transmission electron microscopy. Fission- and fusion-neutrons introduce relatively dilute concentration of point defects around primary knock-on atoms through the displacement cascade process in low-Z ceramics. Higher concentration of point defects, which induces the contrast corresponding to the cascade damage though TEM, is induced only in covalent crystals consisting of relatively high-Z elements. The nucleation and growth process of interstitialloops is strongly affected by the crystal structure and structural vacancy.