Initialising ...
Initialising ...
Initialising ...
Initialising ...
Initialising ...
Initialising ...
Initialising ...
TiO
pebbleTsuchiya, Akihito*; Yamauchi, Yuji*; Nobuta, Yuji*; Hino, Tomoaki*; Akiba, Masato; Enoeda, Mikio
Fusion Engineering and Design, 89(7-8), p.1280 - 1283, 2014/10
Times Cited Count：3 Percentile：20.54(Nuclear Science & Technology)Lithium titanate (LiTiO) pebbles were irradiated with D3+ ions with energy of 5.0 keV, and the amounts of retained deuterium in the pebbles were measured by thermal desorption spectroscopy. Cycles of irradiation and heating were carried out repeatedly in order to investigate the influence of surface condition on deuterium release from LiTiO. The composition of Li decreased with the increase in the number of the irradiation and heating cycle. The desorption peaks of the gases contained deuterium atoms were shifted to higher temperature region. Total amount of desorbed deuterium showed the tendancy to increase. These results suggest that the tritium recovery efficiency would deteriorate with the increase in the damages and the defects especially at the lower temperature region during the use of blanket.
Tsuchiya, Akihito*; Hino, Tomoaki*; Yamauchi, Yuji*; Nobuta, Yuji*; Akiba, Masato; Enoeda, Mikio
Fusion Engineering and Design, 88(9-10), p.2298 - 2301, 2013/10
Times Cited Count：2 Percentile：16.52(Nuclear Science & Technology)Lithium titanate (LiTiO) pebbles were irradiated with deuterium ions with energy of 1.7 keV and then exposed to helium or helium and hydrogen mixed gas at various temperatures, in order to evaluate the effects of gas exposure on deuterium removal from the pebbles. The amounts of residual deuterium in the pebbles were measured by thermal desorption spectroscopy. The mixing of hydrogen gas into helium gas enhanced the removal amount of deuterium. In addition, we also evaluated the pebbles exposed to the helium gas with different hydrogen mixture ratio from 0% to 1%, at 573 K. Although the amount of residual deuteriumin the pebbles after the exposure decreased with increasing the hydrogen mixture ratio, the implanted deuterium partly remained after the exposure. These results suggest that the tritium inventory may occur at low temperature region in the blanket during the operation.
