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The residual atmosphere of an UHV chamber is known to be influenced by the hot cathode gauge (HCG) via processes on the hot cathode and by ionisation. In the presence of such a gauge, some gases are pumped while several residuals are generated, depending on the condition of the chamber's inner surface, gauge parameters and gases that are released spontaneously or introduced on purpose.We analysed...
The deuterium flow q perm (HD) through a 0.15mm thick stainless steel membrane at 200 o C into vacuum was measured. Deuterium entered the membrane by dissociative adsorption of heavy water (D 2 O) vapour. The q perm (HD) at 200 o C caused by this reaction was measured for two equal membranes; for the first a q per...
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