The stochasticity treatment on the reactivity and criticality thickness in slab geometry

By using the one-group and one-dimensional neutron transport equation, we discussed the effect of stochasticity on the criticality size and reactivity of a slab reactor. In our analysis we used a sufficiently simple stochasticity to obtain the exact results. It is shown that the stochasticity increased the reactivity and decreased the critical thickness and our conclusions agreed with the previous conclusions.