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Author: Publisher: ISBN: Category : Languages : en Pages :
Book Description
The 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.
Author: Publisher: ISBN: Category : Languages : en Pages :
Book Description
The 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.
Author: Publisher: ISBN: Category : Languages : en Pages :
Book Description
Measured spectroscopic data, estimated molecular parameters, and a densty-of-states model for electronic structure have been used to calculate thermodynamic functions for gaseous ThO, ThO2, UO, UO2, UO3, PuO, and PuO2. Various methods for estimating parameters have been considered and numerically evaluated. The sensitivity of the calculated thermodynamic functions to molecular parameters has been examined quantitatively. New values of the standard enthalpies of formation at 298.15°K have been derived from the best available .delta. G°/sub f/ equations and the calculated thermodynamic functions. Estimates of the uncertainties have been made for measured and estimated data as well as for various mathematical and physical approximations. Tables of the thermodynamic functions to 6000°K are recommended for gaseous thorium, uranium, and plutonium oxides.
Author: Bertrand Cheynet Publisher: Elsevier Publishing Company ISBN: Category : Reference Languages : en Pages : 1648
Book Description
"This book is a bibliographical database of articles on thermodynamical properties of inorganic compounds, gases, solutions, metals and alloys, published between 1970 and 1987. This reference source book compiles 25,846 references about more than 13,400 systems and should be particularly useful for people working in inorganic chemical engineering, metallurgy, and new materials processing."--Preface.
Author: Publisher: ISBN: Category : Languages : en Pages :
Book Description
Based on known and estimated molecular constants, the thermodynamic functions, C{sub p}, S{sup o}, H{sup o}-H{sup o}(298), and -(G{sup o} - H{sup o}(298))/T, have been calculated and tabulated for actinide vapors species of the formulas AnO3(g), AnO2(OH)2(g), AnO2Cl2(g), and AnO2F2(g) where An = U, Np, Pu, and Am. A method to calculate the thermodynamic functions for the mixed species, AnO2ClOH(g), AnO2FOH(g), and AnO2FCl(g), is also given.
Author: C. Ronchi Publisher: Springer Science & Business Media ISBN: 9783540221227 Category : Nature Languages : en Pages : 380
Book Description
The monograph deals with the thermodynamic properties of fluid uranium dioxide, one of the most investigated materials of the last century, up to its critical point. It presents an exhaustive theoretical introduction to "quasi-chemical" models of liquids, as well as their behaviour under non-congruent vaporisation conditions. Particular emphasis is given to the properties of pure Coulombic systems and to the pseudoparticle approach, which enables the partition function to be expressed in a simple, but physically rigorous formulation. The construction of the equation of state of stoichiometric and non-stoichiometric uranium dioxide is described in distinct steps, from a critical assessment of the theoretical fundamentals to a thorough review of the pertinent thermochemical and thermophysical data. Calculations of the thermodynamic properties of UO2+x are performed for temperatures up to 11,000 K both for the condensed and gas phase. More than one hundred tables are collected in the Appendix containing all relevant thermodynamic data.
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Author: David W. Green
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Author: Bertrand Cheynet
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Author: C. Ronchi
Author: L. V. Gurvich
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