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Table 2

The conservative and minimal realistic one-sigma bounds relative to the 239Pu(n,f) cross-section for each sub-process are summarized. If these uncertainties vary in size with incident neutron energy, their range is provided andshown explicitly in Figure 4. Also, functional forms are briefly summarized. The variables listed are defined in Table 3.

Sub-process Conservative bound (%) Minimal realistic bound (%) Functional form
N1, N2 0.9 0.7 Linear
ϕ 0.7 0.5 Cor(Δϕi, Δϕj)=0.75 for ij
ε1, ε2, δε 0.8 0.7 Linear
η, δη 0.3–0.5 0.2–0.4 Equation (9)
Cb1, Cb2 0.3–0.9 0.5 Equation (9)
E 0.0–0.9 0.0–0.7 Full correlation in E-space
ζ, δζ 0.1 0.1 Linear
τ, δτ 0.1 0.1 Linear
C1, C2 0.1–0.3 0.1–0.2 Diagonal covariance

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