Nuclear Science and Techniques

《核技术》(英文版) ISSN 1001-8042 CN 31-1559/TL     2019 Impact factor 1.556

Nuclear Science and Techniques ›› 2001, Vol. 12 ›› Issue (1): 36

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Dependence of void nucleation on post-irradiation annealing temperature in α-Al2O3

XU Yong-Jun1, FAN Zhi-Guo1, LUO Qi1, WANG Rong1, ZHU Jia-Zheng1, IWATA Tadao2, MINAMISONO T3, MATSUTA K3, FUKUDA M3, MIHARA M1, ZHU Sheng-Yun   

  1. 1 China institute of Atomic Energy, P.O. Box 275-50, Beijing 102415;
    2 Advanced Science Research Center, JAERI, fbaraki 319-11, Japan;
    3 Department of Physics, Osaka University. Toyonaka, Osake 560, Japan
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XU Yong-Jun, FAN Zhi-Guo, LUO Qi, WANG Rong, ZHU Jia-Zheng, IWATA Tadac, MINAMISONO T, MATSUTA K, FUKUDA M, MIHARA M, ZHU Sheng-Yun. Dependence of void nucleation on post-irradiation annealing temperature in α-Al2O3.Nuclear Science and Techniques, 2001, 12(1): 36

Abstract: The evolution of void nucleation in α-Al2O3 irradiated by En > 1MeV neutrons of 3 x 1020cm-2 and post-annealed from 100°C to 100°C is studied hy a positron annihilation lifetime technique. The void nucleation starts at 500°C. The radius of created voids is 0.31 nm and the number of voids increases with increasing annealing temperature from 550°C to 750°C. Afterwards, the radius of voids increases rapidly and reaches 1.21 nm at 1050°C.

Key words: α-Al2O3, Neutron irradiation, Post annealing, Evolution of void nucleation, Positron lifetime technique