Nuclear Four-Factor Formula & k-Infinity Calculator
Determine the infinite multiplication factor ($k_\infty = \epsilon \cdot p \cdot f \cdot \eta$) and effective multiplication ($k_{eff}$) across fuel enrichment and moderator regimes.
Reactor Physics Factors
Typically 1.02 - 1.05 in LWRs
U-238 resonance capture escape
Fraction absorbed in fuel vs moderator
Neutrons per absorption in fuel
Neutron Multiplication & Lifecycle
Infinite Multiplication (k_∞)
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Four-Factor Product ε·p·f·η
Effective Multiplication (k_eff)
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Core Reactivity ρ
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Total Non-Leakage
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Conversion Ratio CR
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Neutron Lifecycle Breakdown
1000 fast neutrons -> -- thermal neutrons absorbed in fuel
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