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Table 5.

Main contributors on the keff uncertainty (pcm) with covariance data collapsed by either sensitivities or flux.

UOX_420 MOX

Sensitivities Flux Sensitivities Flux
σ c U 235 $ \sigma _c^{U235} $ 321 318 σ f Pu 239 $ \sigma _f^{Pu239} $ 323 338
νU235 218 218 σ c Pu 242 $ \sigma _c^{Pu242} $ 228 211
σ c U 238 $ \sigma _c^{U238} $ 200 208 σ c Pu 239 $ \sigma _c^{Pu239} $ 228 205
σ f U 235 $ \sigma _f^{U235} $ 149 150 σ c Pu 240 $ \sigma _c^{Pu240} $ 211 235
σ f U 238 $ \sigma _f^{U238} $ 134 134 σ c U 238 $ \sigma _c^{U238} $ 158 165
χU235 126 132 σ f U 238 $ \sigma _f^{U238} $ 134 134
σ c B 10 $ \sigma _c^{B10} $ 119 118 σ f Pu 241 $ \sigma _f^{Pu241} $ 130 131

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