Abstract
INGRESS of mercury vapour from mercury vapour condensation pumps into systems undergoing evacuation is prevented in practice by freezing out the mercury vapour in liquid air-cooled traps. The chief drawbacks to this method lie in the cost of liquid air and in the need of attention in replenishing the liquid air as long as the trap is required to remain in action.
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FINCH, G. An Improved Mercury Vapour Trap. Nature 119, 856 (1927). https://doi.org/10.1038/119856a0
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DOI: https://doi.org/10.1038/119856a0
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