TY - JOUR
T1 - Impact of annealing on deuterium retention behavior in damaged W
AU - Sakurada, Shodai
AU - Uemura, Yuki
AU - Fujita, Hiroe
AU - Azuma, Keisuke
AU - Toyama, Takeshi
AU - Yoshida, Naoaki
AU - Hinoki, Tatsuya
AU - Kondo, Sosuke
AU - Hatano, Yuji
AU - Shimada, Masashi
AU - Buchenauer, Dean
AU - Chikada, Takumi
AU - Oya, Yasuhisa
N1 - Publisher Copyright:
© American Nuclear Society.
PY - 2017/11
Y1 - 2017/11
N2 - The annealing effects on deuterium (D) retention for 0.1-1.0 dpa iron (Fe) ion damaged W were studied as a function of annealing duration. The D2 spectra for Fe damaged W with lower defect concentration showed that D trapped by vacancy clusters was clearly decreased as increasing annealing duration due to the recovery of vacancy clusters. On the other hand, at higher defect concentration, the desorption peak of D trapped by voids was shifted toward higher temperature side, which would be caused by aggregation of vacancies and vacancy clusters. It can be said that the recovery and aggregation behavior of defects are controlled by defect concentration. By disappearing of desorption of D trapped by vacancy clusters after annealing for longer duration, the desorption of D trapped by vacancies was increased, which could be explained by following two possibilities. One is that the retention of hydrogen isotope trapped by monovacancy was increased. The other is that number of vacancies during annihilation process of vacancy cluster were formed by annealing.
AB - The annealing effects on deuterium (D) retention for 0.1-1.0 dpa iron (Fe) ion damaged W were studied as a function of annealing duration. The D2 spectra for Fe damaged W with lower defect concentration showed that D trapped by vacancy clusters was clearly decreased as increasing annealing duration due to the recovery of vacancy clusters. On the other hand, at higher defect concentration, the desorption peak of D trapped by voids was shifted toward higher temperature side, which would be caused by aggregation of vacancies and vacancy clusters. It can be said that the recovery and aggregation behavior of defects are controlled by defect concentration. By disappearing of desorption of D trapped by vacancy clusters after annealing for longer duration, the desorption of D trapped by vacancies was increased, which could be explained by following two possibilities. One is that the retention of hydrogen isotope trapped by monovacancy was increased. The other is that number of vacancies during annihilation process of vacancy cluster were formed by annealing.
KW - Annealing
KW - Heavy-ion irradiation
KW - Hydrogen isotopes retention
KW - Tungsten
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U2 - 10.1080/15361055.2017.1350480
DO - 10.1080/15361055.2017.1350480
M3 - Article
AN - SCOPUS:85037043528
VL - 72
SP - 785
EP - 788
JO - Fusion Science and Technology
JF - Fusion Science and Technology
SN - 1536-1055
IS - 4
ER -