Tables of thermodynamic functions for gaseous thorium, uranium, and plutonium oxides

Technical Report · Sat Mar 01 00:00:00 EST 1980

DOI:https://doi.org/10.2172/5455189· OSTI ID:5455189

Green, D W

Measured and estimated spectroscopic data for thorium, uranium, and plutonium oxide vapor species have been used with the methods of statistical mechanics to calculate thermodynamic functions. Some inconsistencies between spectroscopic data and some thermodynamic data have been resolved by recalculating ..delta..H/sup 0//sub f/ (298.15/sup 0/K) values for the vapor species of these oxides. Evaluation of the uncertainties in data, methods of estimating molecular parameters, and effects of assumptions have been discussed elsewhere. The tables of thermodynamic functions that were reported earlier have been revised principally because the low-frequency vibrational modes of UO/sub 2/ and UO/sub 3/ have now been measured. These new empirical data resulted in changes in the electronic contributions to the calculated thermodynamic functions of UO/sub 2/ and the estimated vibrational contributions for PuO/sub 2/. In addition, some minor changes have been made in the methods of calculation of the electronic contributions for all molecules.

• Research Organization: Argonne National Lab. (ANL), Argonne, IL (United States)
• DOE Contract Number: W-31-109-ENG-38
• OSTI ID: 5455189
• Report Number(s): ANL-CEN-RSD-80-1; TRN: 80-008229
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
PLUTONIUM OXIDES
THERMODYNAMIC PROPERTIES
THORIUM OXIDES
URANIUM OXIDES
VAPORS
EXPERIMENTAL DATA
ROTATIONAL STATES
TABLES
THEORETICAL DATA
VIBRATIONAL STATES
ACTINIDE COMPOUNDS
CHALCOGENIDES
DATA
DATA FORMS
ENERGY LEVELS
EXCITED STATES
FLUIDS
GASES
INFORMATION
NUMERICAL DATA
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
PLUTONIUM COMPOUNDS
THORIUM COMPOUNDS
TRANSURANIUM COMPOUNDS
URANIUM COMPOUNDS
640302* - Atomic
Molecular & Chemical Physics- Atomic & Molecular Properties & Theory