Dynamics of collision processes

Investigations have been carried out of two- and three-photon detachment of the negative hydrogen ion (H-) including effects of electron correlations, of two-color detachment of H- with excitation of H(n=2), and of the 3Pe state of H-. Striking effects of long-range dipole field interactions have been demonstrated. Electron correlation effects on detachment cross sections have been quantified. Variational R-matrix calculations of photodetachment of Li- have provided state-of-the-art agreement with recent experimental results. Electric Field effects on photodetachment of H- above the H(n=2) threshold have also been elucidated