TY - JOUR
T1 - Tritium release behavior from neutron-irradiated FLiNaBe mixed with titanium powder
AU - Kubo, Kaito
AU - Katayama, Kazunari
AU - Oya, Makoto
AU - Tsukahara, Katsuya
AU - Fukada, Satoshi
AU - Tanaka, Teruya
AU - Sagara, Akio
AU - Yagi, Juro
AU - Iinuma, Yuto
N1 - Funding Information:
This work was performed with the support and under the auspices of the NIFS Collaboration Research program (NIFS19KEMF147, NIFS20KEMF173), and collaboration with MOSTECH Co. Ltd.
Publisher Copyright:
© 2021
PY - 2021/10
Y1 - 2021/10
N2 - FLiNaBe is a promising liquid blanket material for a fusion reactor. Since hydrogen solubility for FLiNaBe is low, one concern is the permeation of bred tritium. In order to increase effective solubility of hydrogen, the addition of Ti powder was proposed. In this study, the influence of Ti addition on the behavior of tritium generated inside FLiNaBe by neutron irradiation was investigated. The samples of FLiNaBe and FLiNaBe mixed with Ti of 5 wt% and 0.5 wt% were prepared and the solid-state samples were irradiated by thermal neutrons at Kyoto University Research Reactor. The neutron-irradiated samples were heated to 700 °C in an Ar gas flow. The released tritium was collected by a water bubbler and the temporal variation of TF and HT release was observed. Initially, the most of tritium was released as HT from both FLiNaBe with and without Ti but eventually, the most of released tritium was HT after long time heating from FLiNaBe with Ti. This result suggests that the addition of Ti can decrease the release of TF very much. The amount of tritium released from FLiNaBe with Ti was lower than that from FLiNaBe without Ti. This result suggests that the addition of Ti can suppress the release rate of tritium from FLiNaBe.
AB - FLiNaBe is a promising liquid blanket material for a fusion reactor. Since hydrogen solubility for FLiNaBe is low, one concern is the permeation of bred tritium. In order to increase effective solubility of hydrogen, the addition of Ti powder was proposed. In this study, the influence of Ti addition on the behavior of tritium generated inside FLiNaBe by neutron irradiation was investigated. The samples of FLiNaBe and FLiNaBe mixed with Ti of 5 wt% and 0.5 wt% were prepared and the solid-state samples were irradiated by thermal neutrons at Kyoto University Research Reactor. The neutron-irradiated samples were heated to 700 °C in an Ar gas flow. The released tritium was collected by a water bubbler and the temporal variation of TF and HT release was observed. Initially, the most of tritium was released as HT from both FLiNaBe with and without Ti but eventually, the most of released tritium was HT after long time heating from FLiNaBe with Ti. This result suggests that the addition of Ti can decrease the release of TF very much. The amount of tritium released from FLiNaBe with Ti was lower than that from FLiNaBe without Ti. This result suggests that the addition of Ti can suppress the release rate of tritium from FLiNaBe.
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U2 - 10.1016/j.fusengdes.2021.112558
DO - 10.1016/j.fusengdes.2021.112558
M3 - Article
AN - SCOPUS:85104288159
VL - 171
JO - Fusion Engineering and Design
JF - Fusion Engineering and Design
SN - 0920-3796
M1 - 112558
ER -