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Title: Thermodynamic properties of rare gases at low temperatures
Author: Pollard, Cedric Alan
ISNI:       0000 0004 2668 4754
Awarding Body: University of London
Current Institution: Imperial College London
Date of Award: 1971
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An apparatus has been designed and constructed for the determination of the second virial coefficient of pure gases and gas mixtures from room temperature down to their normal boiling points, using the Burnett expansion technique. Pressures up to 800 mm Hg were measured on a mercury manometer with an associated standard deviation of about 2 microns Hg. The second virial coefficient was measured (i) for pure krypton at 16 temperatures between 166.71 K and 274.25 K, (ii) for pure xenon at 18 temperatures between 160.22 K and 300.63 K and (iii)for an approximately equimolar mixture of krypton + xenon at 10 temperatures between 152.40 K and 297.80 K. The effect of adsorption of gas on the surfaces of the low temperature cell of the Burnett apparatus was found to be negligible. The krypton data are in good agreement with other workers, and the room temperature xenon data agree well with other data from low pressure studies, but the low temperature xenon data show a trend to less negative values of the second virial coefficient than suggested by the work of Brewer (36) the only published values at these low temperatures.
Supervisor: Not available Sponsor: Not available
Qualification Name: Thesis (Ph.D.) Qualification Level: Doctoral
EThOS ID:  DOI: Not available