Abstract
A procedure for measurement of getter pumping speeds several orders of magnitude below the lowest reported rates in the literature is described. The method used was found to be useful in evaluating ambient hydrogen pumping characteristics for small getters in the presence of trace contaminant gases (less than 0.13 μmol). Poisoning effects are described for the action of carbon monoxide and carbon dioxide on a zirconium–titanium nickel alloy bulk getter. Results obtained indicated that the poisoning effect is much less severe in the case of barium flash getters.
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