Abstract
In order to examine the effect of neon glow discharge on hydrogen or helium removal, neon glow discharge was conducted for the stainless steel after the exposure to hydrogen or helium glow discharge, and then the amount of desorbed hydrogen or helium and retained neon were evaluated. Large hydrogen desorption was observed at the initial period of the neon discharge following the hydrogen discharge. The removal ratio of retained hydrogen by the neon discharge with 2 h was 1.3 times larger than that by the argon discharge, and a half of that by the helium discharge. In the case of the neon discharge following the helium discharge, the removal ratio of retained helium was 4 times larger than that by the argon discharge. The amount of retained neon was an order of magnitude smaller than that of helium retained in the stainless steel.
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