Vapor Pressure Determination of Liquid UO2 Using a Boiling Point Technique
- 1 December 1987
- journal article
- research article
- Published by Taylor & Francis in Nuclear Science and Engineering
- Vol. 97 (4) , 344-352
- https://doi.org/10.13182/nse87-a23517
Abstract
By analogy with the classic boiling point method, a quasi-stationary millisecond laser-heating technique was applied to measure the saturated vapor pressure curve of liquid UO2 in the temperature range of 3500 to 4500 K. The results are represented by log p (MPa) = 5.049 - 23 042/T (K), which gives an average heat of vaporization of 441 kJ/mol and a normal boiling point of 3808 K. In addition, spectral emissivities of liquid UO2 were determined as a function of the temperature at the pyrometer wavelengths of 752 and 1064 nm.Keywords
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- Total pressure of uranium-bearing species over molten uraniaJournal of Nuclear Materials, 1972