Table IV.
Reading edition
Nominal APRFR Leakage and U235 Fission Spectra [4]
Energy Group Number n Energy Range (Mev) Average Energy Eₙ (Mev) APRFR Spectrum Fraction XₙΔEₙ U235 Fission Spectrum Fraction XₙΔEₙ
1 3.0-∞ 4.41 0.133 0.204
2 1.4-3.0 2.10 0.251 0.344
3 0.9-1.4 1.14 0.164 0.168
4 0.4-0.9 0.65 0.262 0.180
5 0.1-0.4 0.26 0.168 0.090
6 0-0.1 0.059 0.022 0.014
SUM 1.000 1.000
Mean
Energy
(Mev) ~1.55 ~1.8