TY - JOUR
T1 - Temperature dependence of deuterium retention in tungsten deposits by deuterium ion irradiation
AU - Katayama, K.
AU - Uehara, K.
AU - Date, H.
AU - Fukada, S.
AU - Watanabe, H.
N1 - Funding Information:
This work was supported in part by the Collaborative Research Program of Research Institute for Applied Mechanics , Kyushu University.
Publisher Copyright:
© 2014 Elsevier B.V.
PY - 2015/7/22
Y1 - 2015/7/22
N2 - Abstract Tungsten (W) deposits were formed by hydrogen plasma sputtering and blisters were observed on the surface. The W deposits and W foils were exposed to deuterium ions with 2 keV-D2+ to doses of 1.0 × 1021 D2+/m2 at 294 and 773 K in addition to 573 K in the present authors' previous work. Hydrogen isotopes release behaviors from the W deposits and W foils were observed by the thermal desorption spectroscopy method. The amount of deuterium released from the W deposit was considerably larger than that from W foil. The obtained deuterium retention in D/m2 was in the range of deuterium retention in polycrystalline tungsten. Not only implanted deuterium but also hydrogen, which was incorporated during the sputtering-deposition process, were released from the W deposits. A hydrogen release peak at around 1100 K was observed for the W deposits. This is considered to be due to the rupture of the blisters.
AB - Abstract Tungsten (W) deposits were formed by hydrogen plasma sputtering and blisters were observed on the surface. The W deposits and W foils were exposed to deuterium ions with 2 keV-D2+ to doses of 1.0 × 1021 D2+/m2 at 294 and 773 K in addition to 573 K in the present authors' previous work. Hydrogen isotopes release behaviors from the W deposits and W foils were observed by the thermal desorption spectroscopy method. The amount of deuterium released from the W deposit was considerably larger than that from W foil. The obtained deuterium retention in D/m2 was in the range of deuterium retention in polycrystalline tungsten. Not only implanted deuterium but also hydrogen, which was incorporated during the sputtering-deposition process, were released from the W deposits. A hydrogen release peak at around 1100 K was observed for the W deposits. This is considered to be due to the rupture of the blisters.
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U2 - 10.1016/j.jnucmat.2014.11.103
DO - 10.1016/j.jnucmat.2014.11.103
M3 - Article
AN - SCOPUS:84937638604
SN - 0022-3115
VL - 463
SP - 1033
EP - 1036
JO - Journal of Nuclear Materials
JF - Journal of Nuclear Materials
M1 - 48697
ER -