Basic study on plasma facing materials by using hydrogen storage material

Abstract

Nuclear fusion is expected as one of the future energy source. Deuterium and Tritium are fuels. But most unreacted fuel is exhausted out of fusion reactor. Especially, Tritium is radioisotope and rarely exists in nature, so fuels recovery is necessary. Therefore, we propose a separation on divertor region by using hydrogen storage material. In this study, we have proposed fuel particles recovering on divertor with titanium in the type of a hydrogen storage material by using divertor simulator TPD-SheetIV via deuterium plasma. After deuterium plasma exposures, the samples were analyzed by thermal desorption spectroscopy (TDS). The temperatures of the samples were increased up to 1093K. As a result, the TDS measurement shows that deuterium is retained.