Coupled ODEs for reactor power P and precursor concentration C_i: dP/dt = (ρ−β)/Λ·P + Σ λ_i C_i, dC_i/dt = β_i/Λ·P − λ_i C_i. ρ is reactivity, Λ the prompt-neutron lifetime.
Coupled ODEs for reactor power P and precursor concentration C_i: dP/dt = (ρ−β)/Λ·P + Σ λ_i C_i, dC_i/dt = β_i/Λ·P − λ_i C_i. ρ is reactivity, Λ the prompt-neutron lifetime.