Dependence of gamma-ray dose on annihilation processes of irradiation defects in Li2TiO3

作者：Osuo Junya^*; Kobayashi Makoto; Kurata Rie; Hamada Akiko; Wang Wanjing; Fujii Toshiyuki; Yamana Hajimu; Luo Tianyong; Feng Kaiming; Oya Yasuhisa; Okuno Kenji

来源：Fusion Engineering and Design, 2011, 86(9-11): 2362-2364.

DOI：10.1016/j.fusengdes.2011.04.080

• Tritium
• ESR
• E '-center
• O-related defects
• Frenkel pair

Dependence of gamma-ray dose on formation and annihilation behaviors of irradiation defects was studied by means of ESR In the formation behavior of irradiation defects, the amount of irradiation defects and ratio of O-2(-)-center to O--center increased as the in gamma-ray dose increased. The annealing experiments showed that the amounts of E'-center and O-related defects which are the Frenkel pair decreased in the two temperature ranges of 300-400 and 550-650 K. The first and second stages were identified to reactions between E'-center and O--center and E'-center and O-2(-)-center, respectively. By comparing annihilation with formation behaviors of irradiation defects, it was revealed that the activation energy of annihilation for irradiation defects was influenced by the ratio of O-2(-)-center and O-related defects. Therefore, the annihilation process of irradiation defects was dominated by pyrolysis of O-2(-)-center.

• 出版日期2011-10
• 单位核工业西南物理研究院