Evolution of the neutron density (first row), abundances of fictitious particles (second row), effective neutron-capture reaction rates ⟨σv⟩_ncap, k (third row) and reaction rates ⟨σv⟩_evo, k (fourth row) as a function of N_capt during the first interpulse phase in a star of 2 M_⊙ and [Fe/H] = −2 at the mass coordinate M_r = 0.599 M_⊙. The reaction rates are given units of [cm³ s⁻¹ mol⁻¹].