Abstract
Hot-rolled tungsten specimen were irradiated with 5 MeV gold ion and loaded with deuterium plasma sequentially. Deuterium retention was examined by glow discharge optical emission spectroscopy, nuclear reaction analysis and thermal desorption spectroscopy. The deuterium depth profiles obtained by nuclear reaction analysis show that deuterium concentration increases significantly after irradiation, and damage region could uptake most of deuterium. The results of thermal desorption spectroscopy demonstrate that heavy ion damage can produce a large number of defects which could trap deuterium. Significant deuterium saturation was observed with damage level above 0.4 dpa. Furthermore, the depth profile and total inventory of deuterium show that the result measured by glow discharge optical emission spectroscopy is in good agreement with that by nuclear reaction analysis and thermal desorption spectroscopy.
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