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- Title
Estimation of the heat capacity of some uranium-rare earth mixed oxides from thermal expansion and vice versa.
- Authors
Venkata Krishnan, R.; Senapati, Abhiram; Ananthasivan, K.; Nagarajan, K.
- Abstract
Estimation of the high temperature heat capacity ( C) data from experimental high temperature thermal expansion ( α) data and vice versa from the known values of the ratio (α/ C) at low temperatures were carried out by assuming linear relationship of the ratio α /C with temperature (at T > θ). The assumption was examined using the known α and C values of single phase fluorite systems such as UO, ThO and PuO. It was also examined using the known α and C of the mixed oxides (U La) O ( y = 0.2, 0.4, 0.6 and 0.8). The estimated values of α and C are in good agreement with the experimental values within ±3%. Using the assumption the high temperature heat capacity data of (U Ce) O ( y = 0.2, 0.8) and (U Gd) O ( y = 0.2, 0.5) were computed from the experimental high temperature α data.
- Subjects
PARAMETER estimation; HEAT capacity; URANIUM; THERMAL expansion; REGRESSION analysis; LOW temperatures; HIGH temperatures
- Publication
Journal of Thermal Analysis & Calorimetry, 2013, Vol 111, Issue 1, p923
- ISSN
1388-6150
- Publication type
Article
- DOI
10.1007/s10973-012-2297-3