- 55 -


Note that each uranium index (i) has been increased by one, so that within the formulation of the numerical expressions used in the computer program, the following definitions are used:


         Density of U0 in partic les/cc

         N  = density of U +in particles/cc







         N 13 = density of U12+ in particles/cc


Since the electrons and various uranium species will have densities with numerical values in the approximate range of 0 to 1020 particles/cc, it is convenient to scale equations (4.7-1) through (4.7-14) so that all particle densities can be expressed as dimensionless concentrations Ci, where 0 < C   1 < 1. Dividing each term in equations (4.7-1) through (4.7-14) by NTOT gives the following set of scaled equations.

                    C C
                    -  -=   K1                      (4.8-1)
                      1


                    C3 Ce
                      2   = K2,                     (4.8-2)
                      C2