CHARGE-TRANSFER IN SLOW N2++H COLLISIONS

We have performed quantal calculations of charge transfer in N2+ + H collisions in the range of centre of mass energies 0.1 < E < 100 eV amu(-1). Molecular states were calculated using ab initio SCF-CI methods. Radial and angular couplings between the adiabatic molecular states were evaluated with allowance for a common translation factor. In agreement with earlier calculations, we find that charge transfer into the N+(2s2p(3) D-3(o)) state is dominant in the energy range considered and relevant to the study of photoionized nebulae. However, the cross sections and the rate coefficients that we have computed are smaller than the results of the earlier work by factors of about 1.5.