Measurements of scattering processes in negative ion - atom collisions. Technical progress report - year 1, April 1, 1995--March 31, 1996

This Technical Progress Report describes the progress made on the research objectives during the past twelve months. The objective of this research project is to provide absolute cross section measurements of various scattering processes which occur in negative ion collisions with atomic (specifically, noble gas and atomic hydrogen) targets at intermediate energies. These processes include: elastic scattering, single- and double-electron detachment, and target-inelastic processes of excitation and ionization. Total cross sections for single- and double-electron detachment were recently published in Physical Review A from this research project. The researchers were successful this past year in acquiring the first cross section measurements of target excitation for H{sup -} impact on helium target atoms