- 1.23 -


The calculation of the high temperature plasma composition is begun using an initial estimate, C(°), to calculate q
                                     e
from (6.52). Then d3 is obtained from (6.51) and d2 from (6.8). Next C1 is calculated using (6.50) and C2 using (6.15-1). The initial value of the mixing ratio is

                           d2 + d
                    R(O)    2    3                  (6.53)
                            13
                            i=l 1


By incrementing Ce by some ACe, the calculation is repeated until the mixing ratio converges to the specified value Rs. Lowering of Ionization Potential and Cut-off Quantum Numbers

        The complete calculation of the composition of the mixed hydrogen uranium plasma includes the lowering of ionization potentials and the determination of cut-off quantum numbers for both hydrogen and uranium. The details of these calculations are discussed in Chapters IV and V. A program called HUPLAZ-2 was written to calculate the mixed plasma composition as a function of pressure, temperature, and mixing ratio. A brief description of the iterative method used by the program follows.

        Step 1.--An initial electron density estimate N = N(o)-is used in equation (5.8) to calculate an e    e
initial value of the hydrogen cut-off quantum number n(O).