Abstract

A prototype cryostat has been developed for the efficient recycling of xenon. A mixture of gases of similar concentration to those expired by patients undergoing computerised tomography (CT) studies was used. The high boiling point contaminants were removed by chemical trapping and the remainder were subjected to low temperatures in a specially constructed vessel, where xenon separated out as a solid whilst the impurities were removed by venting-off to the atmosphere and by suction.

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