The up-take behavior of hydrogen and deuterium was studied for the surface layer of Mo single crystals irradiated by 10 keV He ions with a high dose, at which the blisters and exfoliation were formed on the surface. Hydrogen accumulation was found in the H saturated layer up to a maximum concentration of about 0.2 H/Mo at room temperature. Although the up-taken H concentration profiles and the morphological changes of the irradiated surface depended on irradiation temperatures, thermal release behavior of up-taken H were similar for both specimens irradiated at 295 and 820 K. The higher pressure of H_2 and/or H_2O caused the quicker accumulation of H, and the hydrogen dissociation seemed to be sensitive to the surface contamination. The up-take rate for H was an order of magnitude larger than that for D, even by letting mainly D_2 and/or D_2O into the vacuum chamber.
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机译：研究了高剂量10 keV He离子辐照的Mo单晶表面层中氢和氘的吸收行为，在表面上形成水泡和剥落。在室温下，在H饱和层中发现了氢积累，最高浓度约为0.2 H / Mo。尽管摄取的H浓度分布和被辐照表面的形态变化取决于辐照温度，但是在295和820 K辐照的两个样品中摄取的H的热释放行为相似。H_2和/或H_2O的压力较高导致H更快地积累，并且氢离解似乎对表面污染敏感。即使主要通过使D_2和/或D_2O进入真空室，H的吸收速率也比D的吸收速率大一个数量级。
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