TY - JOUR
T1 - Tritium release behavior from steels irradiated by high energy protons
AU - Nakamura, H.
AU - Kobayashi, K.
AU - Yamanishi, T.
AU - Yokoyama, S.
AU - Saito, S.
AU - Kikuchi, K.
PY - 2007/11
Y1 - 2007/11
N2 - Thermal desorption behavior of tritium has been investigated for SS316 and F82H irradiated by 580MeV proton (SINQ-target3) up to 5.0 -5.9 dpa and 6.3-9.1 dpa, respectively, in order to understand tritium transport in the irradiated materials. While the tritium release has only one peak at 670 K from irradiated SS316, that has two peaks at 510 K and 670 K from irradiated F82H. Those results indicate that only one kind of trap site exists in the SS316, and at least two kinds of trap site exist in F82H. As the results of tritium transport analysis of tritium release behavior, it was found that the trap site at 670 K for SS316 and F82H could be controlled by the same trap mechanism. As to the chemical form of tritium released from the steels, 1/2 and 1/3 of tritium was release as water vapor form from SS316 and F82H, respectively. It could be attributed to the growth of surface oxide on the metal surfaces during the TDS.
AB - Thermal desorption behavior of tritium has been investigated for SS316 and F82H irradiated by 580MeV proton (SINQ-target3) up to 5.0 -5.9 dpa and 6.3-9.1 dpa, respectively, in order to understand tritium transport in the irradiated materials. While the tritium release has only one peak at 670 K from irradiated SS316, that has two peaks at 510 K and 670 K from irradiated F82H. Those results indicate that only one kind of trap site exists in the SS316, and at least two kinds of trap site exist in F82H. As the results of tritium transport analysis of tritium release behavior, it was found that the trap site at 670 K for SS316 and F82H could be controlled by the same trap mechanism. As to the chemical form of tritium released from the steels, 1/2 and 1/3 of tritium was release as water vapor form from SS316 and F82H, respectively. It could be attributed to the growth of surface oxide on the metal surfaces during the TDS.
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U2 - 10.13182/FST07-A1627
DO - 10.13182/FST07-A1627
M3 - Article
AN - SCOPUS:36249011983
SN - 1536-1055
VL - 52
SP - 1012
EP - 1016
JO - Fusion Science and Technology
JF - Fusion Science and Technology
IS - 4
ER -