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Author: Publisher: ISBN: Category : Languages : en Pages : 20
Book Description
An investigation was conducted to obtain data needed to make realistic estimates of plutonium contamination in the primary coolant system in High Temperature Gas-Cooled Reactors (HTGRs). The vapor pressure of plutonium over plutonium sesquicarblde (Pu2C3) adsorbed on the surface of H-451 graphite was found to be defined by adsorption isotherms at test temperatures of 1000, 1200, and 1400°C. The vapor pressures at low concentrations of Pu2C3 on the surface of the graphite were up to three orders of magnitude below that of pure Pu2C3 at a given temperature. The heat of adsorption increases with decreasing Pu2C3 surface coverage with the measured value at 0.05 [mu]mol Pu2C3/m2 being 107.9 kcal/mol. The Pu2C3 concentration required for monolayer surface coverage on the graphite was found to be 3.27 [mu]mol/m2.
Author: Publisher: ISBN: Category : Languages : en Pages : 20
Book Description
An investigation was conducted to obtain data needed to make realistic estimates of plutonium contamination in the primary coolant system in High Temperature Gas-Cooled Reactors (HTGRs). The vapor pressure of plutonium over plutonium sesquicarblde (Pu2C3) adsorbed on the surface of H-451 graphite was found to be defined by adsorption isotherms at test temperatures of 1000, 1200, and 1400°C. The vapor pressures at low concentrations of Pu2C3 on the surface of the graphite were up to three orders of magnitude below that of pure Pu2C3 at a given temperature. The heat of adsorption increases with decreasing Pu2C3 surface coverage with the measured value at 0.05 [mu]mol Pu2C3/m2 being 107.9 kcal/mol. The Pu2C3 concentration required for monolayer surface coverage on the graphite was found to be 3.27 [mu]mol/m2.
Author: O. C. Simpson Publisher: ISBN: Category : Graphite Languages : en Pages : 174
Book Description
This report is a progress report on current measurements at the Argonne National Laboratory of the heat of vaporization and vapor pressure of graphite. It supersedes previous reports ANL-4007 and ANL-4158 in the sent that it includes all basic data reported therein as well as more recently acquired data. In addition the present report contains a more detailed and critical evaluation of the uncertainties in the results.
Author: Publisher: ISBN: Category : Languages : en Pages :
Book Description
By the use of available low-temperature data for various thermophysical and transport properties for uranium and plutonium carbides, values above the melting point were estimated. Sets of recommended values have been prepared for the compounds UC, PuC, and (U, Pu)C. The properties that have been evaluated are density, heat capacity, enthalpy, vapor pressure, thermal conductivity, viscosity, and emissivity.
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Author: O. C. Simpson
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Author: Leo Brewer
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