Multichannel Coulomb Scattering with Asymptotic Non-adiabatic Coupling.

The multi-channel Coulomb scattering problem in the adiabatic representation is considered. The non-adiabatic coupling matrix is assumed to have a non-zero asymptotic behavior at large internuclear separations. The asymptotic solutions at large inter-nuclear distances are {therefore} constructed. The asymptotic boundary conditions with S-matrix and K-matrix for the scattering problem are formulated on the basis of constructed asymptotic solutions.