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Application of the Pitzer Method for Modeling Densities of Actinide Solutions in the SCALE Code System
Volume 153 · Number 1 · January 2006 · Pages 1-8
Technical Paper · Reactor Safety
Charles F. Weber, Calvin M. Hopper
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A new approach to modeling fissile solution densities is developed and applied to arbitrary solutions of UO22+, Th4+, Pu4+, H+, and NO3- in water. The model is based on the semiempirical method of Pitzer for describing electrolyte solution thermodynamics. This new density model has been included in the recent release of the SCALE 5 code system as the default for criticality calculations of fissile solutions.
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