Voids in α–Al2O3 Irradiated by 85 MeV 19F Ions

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WANG Rong, XU Yong-Jun, ZHU Jia-Zheng, ZHENG Yong-Nan, ZHOU Dong-Mei and ZHU Sheng-Yun. Voids in α–Al2O3 Irradiated by 85 MeV 19F Ions[J]. Chinese Physics C, 2003, 27(7): 649-652.
WANG Rong, XU Yong-Jun, ZHU Jia-Zheng, ZHENG Yong-Nan, ZHOU Dong-Mei and ZHU Sheng-Yun. Voids in α–Al2O3 Irradiated by 85 MeV 19F Ions[J]. Chinese Physics C, 2003, 27(7): 649-652. shu
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Received: 2002-09-24
Revised: 1900-01-01
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Voids in α–Al2O3 Irradiated by 85 MeV 19F Ions

    Corresponding author: ZHU Sheng-Yun,
  • China Institute of Atomic Energy, Beijing 102413, China2 Advanced Science Research Center, JAERI, Japan3 Department of Physics, Osaka University, Toyonaka, Japan

Abstract: The voids in α-Al2O3 irradiated by 85 MeV 19F ions of 5.28×1016cm-2 have been observed during the post-annealing by a positron annihilation lifetime technique for the first time. The voids start to appear at 450℃. The void radius keeps nearly constant at ~0.29nm and the number of voids increases with increasing the annealing temperature from 550℃ to 750℃. Afterwards, the radius of voids increases rapidly with the annealing temperature and reaches 1.10nm at 1050℃.

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