3. Possible applications

3.1 Neutron balance

We are interested in the total number of neutrons available in the reactor for purposes other than fission. This number is equal to the total number of neutrons produced in the reactor minus the number of neutrons needed to produce N _f fissions. To create a fission, you need (σ _f + σ _c ) / σ _f neutrons, we also note this term (1 + α). We then have : $N_d=\frac{N_s}{1-k_s}-N_f\left(1+\alpha \right)$

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