H-0-2 COLLISIONS AT LOW-KILO-ELECTRON-VOLT ENERGIES(N)

Direct scattering (-->H-0), stripping (-->H+), and electron capture (- ->H-) are studied at energies of 1.0, 2.0, and 3.0 keV in small-angle H-0+N-2 collision. Time-of-flight and electrostatic-energy analysis ar e used to identify the dominant collision processes. The electronicall y elastic channel is found to be weak beyond the very smallest scatter ing angles. As an example, at 1.0 keV, electronically inelastic proces ses dominate the collision for scattering angles larger than 0.2(0). B eyond the smallest angles, both the stripping and electron-capture pro cesses can also result in electronic excitation of the N-2 or N-2(+). The reduced cross sections, when plotted as a function of reduced scat tering angle, are shown to Scale reasonably well for each of the three processes studied.