Balmer- emission in proton - hydrogen collisions

Cross sections for excitation and capture processes into the n = 1, 2, and 3 states (including Balmer- ) and ionization have been calculated at intermediate proton collision energies with atomic hydrogen. In addition, the alignment, , and polarization fraction, , parameters have been calculated. A multi-state close-coupling approach using a triple-centre basis set together with selective perturbative methods are used to make predictions on Balmer- emission. These results are compared with the available experimental data and various theoretical investigations for fast protons colliding with atomic hydrogen.