12B(n,γ)13B reaction as an alternative path to astrophysical synthesis of 13C isotope

The total cross sections of the neutron radiative capture on 12B at astrophysical energies to ground state 13B have been calculated in energy range 10E-8 10 MeV within framework a modified potential cluster model with classification orbital states according Young diagrams. Reaction rates temperature 0.01 T9 and their analytical parameterization were obtained. 12B(n,gamma)13B excess previous results by approximately one order. Cross reaction 12C(n,gamma)13C are compared n10B, n11B, n12B, p12C rates. It is proposed that obtained should be taken into account novel scenarios stable isotope 13C synthesis without 12C hydrogen burning.