Radiation-induced disordering in magnesium aluminate spinel subjected to ionizing radiation

M. Shimada, S. Matsumura, K. Yasuda, C. Kinoshita, Y. Chimi, N. Ishikawa, A. Iwase

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10 Citations (Scopus)


An analytical electron microscope study was carried out on single crystal specimens of magnesium aluminate spinel irradiated with 200 MeV Xe14+ ions up to 5.0 × 1015 and 2.0 × 1016 ions/m2 at ambient temperature. Bright-field images showed structurally disordered columns of about 4-5 nm in diameter along ion tracks. Tiny pits were observed on the incident surface of the columns. Quantitative HARECXS analysis of atomic configurations revealed that disordering proceeds in more extended regions over 10 nm in diameter. The configurations of Al 3+ ions are more disordered than that of Mg2+ ions. The disordered areas are appeared to overlap each other in the specimen irradiated with 2.0 × 1016 ions/m2.

Original languageEnglish
Pages (from-to)1446-1450
Number of pages5
JournalJournal of Nuclear Materials
Issue number1-3 PART B
Publication statusPublished - Aug 1 2004
EventProceedings of the 11th Conference on Fusion Research - Kyoto, Japan
Duration: Dec 7 2003Dec 12 2003

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics
  • General Materials Science
  • Nuclear Energy and Engineering


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