Abstract
The direct reaction cross section for ^7Li(^3H, n)^9Be at low energies 0 MeV ≦ E_<cm> ≦ 2 MeV of astrophysical interest was calculated in the nuclear models of distorted- wave Born approximation. Nuclear potentials and spectroscopic amplitudes were determined from the observed cross section for ^7Li(^3He, p)^9Be, assuming charge independence of these quantities. We predict the total reaction cross section for ^7Li(^3H, n)^9Be by taking account of the difference of Coulomb interaction and the contribution from compound resonance formation. They were applied to primordial nucleosynthesis calculations and it was confirmed that the nuclear reaction ^7Li(^3H, n)^9Be can extremely enhance the ^9Be abundance in inhomogeneous models for primordial nucleosynthesis as predicted in recent theoretical studies.
