Nuclear Four-Factor Formula & k-eff Calculator
Calculate infinite multiplication factor ($k_\infty$), reproduction factor ($\eta$), resonance escape ($p$), thermal utilization ($f$), and effective core criticality ($k_{eff}$).
Neutron Cycle & Lattice Factors
Fast neutrons / thermal absorbed
Fast U-238 fission bonus
Prob. of escaping U-238 capture
Thermal absorption in fuel vs mod
35–45 cm² for H₂O
Multiplication Factor & Criticality
Effective k_eff
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Infinite k_inf
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Core Reactivity ρ
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Non-Leakage P_NL
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Buckling B_g²
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Reactor Criticality Diagnosis
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