TY - JOUR
T1 - Radiation-induced disordering in magnesium aluminate spinel subjected to ionizing radiation
AU - Shimada, M.
AU - Matsumura, S.
AU - Yasuda, K.
AU - Kinoshita, C.
AU - Chimi, Y.
AU - Ishikawa, N.
AU - Iwase, A.
N1 - Funding Information:
The authors would like to express sincere thanks to Dr C.J. Rossouw (CSIRO) and Dr M.P. Oxley (University of Melbourne) for helpful discussion and comments on HARECXS analysis. This work was supported in part by Grant-In-Aid for Scientific Research (B) from the Japan Society for the Promotion of Science.
PY - 2004/8/1
Y1 - 2004/8/1
N2 - 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.
AB - 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.
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U2 - 10.1016/j.jnucmat.2004.04.161
DO - 10.1016/j.jnucmat.2004.04.161
M3 - Conference article
AN - SCOPUS:3342947721
SN - 0022-3115
VL - 329-333
SP - 1446
EP - 1450
JO - Journal of Nuclear Materials
JF - Journal of Nuclear Materials
IS - 1-3 PART B
T2 - Proceedings of the 11th Conference on Fusion Research
Y2 - 7 December 2003 through 12 December 2003
ER -