TY - JOUR
T1 - Effect of periodic deuterium ion irradiation on deuterium retention and blistering in Tungsten
AU - Oya, M.
AU - Lee, H. T.
AU - Hara, A.
AU - Ibano, K.
AU - Oyaidzu, M.
AU - Hayashi, T.
AU - Ueda, Y.
N1 - Funding Information:
This work is performed with the support and under the auspices of the Broader Approach Activity. This work is performed also with the support and under the auspices of the NIFS Collaboration Research program ( NIFS13KOBF025 ). In addition, this work was supported by JSPS KAKENHI Grant Number JP26-839 .
Publisher Copyright:
© 2017 The Authors
PY - 2017/8
Y1 - 2017/8
N2 - The effect of periodic irradiation on Deuterium (D) retention and blistering in Tungsten (W) was investigated. W samples were exposed to D plasma at a fixed fluence while varying the irradiation cycle number (1-shot, 2-shots and 3-shots). Exposure energy and flux were ∼50 eV and ∼1 × 1022 D m−2 s−1, respectively. Sample temperatures were 537 K and 643 K. At 573 K, D retention and blister density decreased with increasing number of irradiation cycle. In contrast at 643 K, D retention showed no dependence on number of irradiation cycle. Therefore, sample temperature during irradiation is an important parameter in comparing the results of continuous and periodic irradiation, especially in studies involving extremely-high-flux (>1024 D m−2 s−1) irradiation and fluence dependency of D retention.
AB - The effect of periodic irradiation on Deuterium (D) retention and blistering in Tungsten (W) was investigated. W samples were exposed to D plasma at a fixed fluence while varying the irradiation cycle number (1-shot, 2-shots and 3-shots). Exposure energy and flux were ∼50 eV and ∼1 × 1022 D m−2 s−1, respectively. Sample temperatures were 537 K and 643 K. At 573 K, D retention and blister density decreased with increasing number of irradiation cycle. In contrast at 643 K, D retention showed no dependence on number of irradiation cycle. Therefore, sample temperature during irradiation is an important parameter in comparing the results of continuous and periodic irradiation, especially in studies involving extremely-high-flux (>1024 D m−2 s−1) irradiation and fluence dependency of D retention.
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U2 - 10.1016/j.nme.2017.03.022
DO - 10.1016/j.nme.2017.03.022
M3 - Article
AN - SCOPUS:85016083704
SN - 2352-1791
VL - 12
SP - 674
EP - 677
JO - Nuclear Materials and Energy
JF - Nuclear Materials and Energy
ER -