Number of neutrons captured per heavy seed as a function of exposure ϕ for different temperatures (expressed in units of T₆ = 10⁶ K). The curves move from left to right with increasing temperature. The value in parentheses represents the typical neutron densities in cm⁻³ associated to the burning temperature. The T₆ = 100, No Light case has the same composition as T₆ = 100, but the abundance of nuclei with 13 < A_i < 56 is set to zero. The NP case accounts for enhanced abundances of neutron poisons (see text). The T₆ = 100 – Fict case uses the fictitious network.