TY - JOUR
T1 - Kinetics of deuterium penetration into neutron-irradiated tungsten under exposure to high flux deuterium plasma
AU - Yajima, M.
AU - Hatano, Y.
AU - Ohno, N.
AU - Kuwabara, T.
AU - Toyama, T.
AU - Takagi, M.
AU - Suzuki, K.
N1 - Funding Information:
The authors would like to express their sincere thanks to Profs. T. Muroga and S. Masuzaki in NIFS and Prof. Y. Nagai in Tohoku University for their support and encouragement. This work was supported by JSPS KAKENHI Grant Number JP18H03688 and JP15K18309 , the National Institute for Fusion Science Collaboration Research Program ( NIFS13KOBF026 and NIFS17KNWF003 ), National Institutes of Natural Sciences Research Program ( UFEX101 ), and the Inter-University Cooperative Research Program of the Institute for Materials Research, Tohoku University (Proposal No. 16M0023).
Funding Information:
The authors would like to express their sincere thanks to Profs. T. Muroga and S. Masuzaki in NIFS and Prof. Y. Nagai in Tohoku University for their support and encouragement. This work was supported by JSPS KAKENHI Grant Number JP18H03688 and JP15K18309, the National Institute for Fusion Science Collaboration Research Program (NIFS13KOBF026 and NIFS17KNWF003), National Institutes of Natural Sciences Research Program (UFEX101), and the Inter-University Cooperative Research Program of the Institute for Materials Research, Tohoku University (Proposal No. 16M0023).
Publisher Copyright:
© 2019 The Authors
PY - 2019/12
Y1 - 2019/12
N2 - The objective of this study is to investigate the effects of neutron (n) irradiation on hydrogen isotope transport in tungsten (W). W samples were irradiated with neutrons in a fission reactor and then exposed to high flux deuterium (D) plasma at 563 K in a linear plasma device. The fraction of D release increased with increasing exposure time. In addition, the D retention in n-irradiated W increased in proportion to the square root of the plasma exposure time. These observations were explained by increase in the penetration depth of D with filling up displacement damages acting as strong trapping sites.
AB - The objective of this study is to investigate the effects of neutron (n) irradiation on hydrogen isotope transport in tungsten (W). W samples were irradiated with neutrons in a fission reactor and then exposed to high flux deuterium (D) plasma at 563 K in a linear plasma device. The fraction of D release increased with increasing exposure time. In addition, the D retention in n-irradiated W increased in proportion to the square root of the plasma exposure time. These observations were explained by increase in the penetration depth of D with filling up displacement damages acting as strong trapping sites.
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U2 - 10.1016/j.nme.2019.100699
DO - 10.1016/j.nme.2019.100699
M3 - Article
AN - SCOPUS:85072793840
VL - 21
JO - Nuclear Materials and Energy
JF - Nuclear Materials and Energy
SN - 2352-1791
M1 - 100699
ER -