Radiation effects in ionic solids |
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Authors: | Noriaki Itoh Katsumi Tanimura |
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Institution: | Department of Crystalline Materials Science , Faculty of Engineering, Nagoya University, Furo-cho , Chikusa-ku, Nagoya , 464 , Japan |
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Abstract: | Current development of the research of radiation damage in ionic solids is reviewed. Emphasis is placed on the correlation between elementary radiation damage processes and the atomic and electronic structures of the materials. Both the radiation damage induced by electronic excitation and by elastic collision are treated. For the former two crucial processes, the self-trapping of excitons and the formation of stable Frenkel pairs from the self-trapped excitons in several materials, is discussed in terms of the structures of materials. Deficiency in the available data on the knock-on threshold energies are pointed out. Available information of Frenkel pairs produced by electronic and elastic encounters is surveyed. Possible models of defect clustering are summarized and existing information on clustering is discussed on their basis. |
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Keywords: | Gallium arsenide Ion-induced damage Composition changes Long-range radiation effects Radiation-induced segregation Post-bombardment relaxation Model calculations PACS: 81 60C 61 80J 81 70 |
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