Research Article

A Simple Formula for Local Burnup and Isotope Distributions Based on Approximately Constant Relative Reaction Rate

Table 1

Relative radius, atomic concentrations, and relative reaction rates of each nucleus. The atomic concentrations are given in cm−3, and all the other quantities are dimensionless.


1/4 6.65  ×   2.17  ×   3.69  ×   1.00 0.0025 2.50 0.23 0.0183
5/8 6.63  ×   2.17  ×   3.91  ×   1.02 0.0024 2.49 0.23 0.0189
13/16 6.61  ×   2.17  ×   4.33  ×   1.05 0.0024 2.49 0.23 0.0203
29/32 6.59  ×   2.17  ×   5.01  ×   1.07 0.0023 2.48 0.23 0.0230
61/64 6.58  ×   2.17  ×   6.26  ×   1.08 0.0023 2.47 0.23 0.0283
125/128 6.58  ×   2.16  ×   8.49  ×   1.09 0.0022 2.47 0.23 0.0368
127/128 6.57  ×   2.16  ×   1.26  ×   1.10 0.0022 2.47 0.23 0.0552