Identification of Thomas peaks in coupled-channel calculations for charge transfer

It is demonstrated that the nonperturbative coupled-channel method can be efficiently extended to very-high-lying continuum states by using a sufficiently large basis set of Gaussian-type orbitals. In applying the method to the Thomas mechanism in H⁺+H collisions at 5 MeV, we identify two distinct and interfering reaction paths, one via the target and one via the projectile continuum. We get remarkable agreement with experimental data.