[en] The objective of this program is to measure atomic collision cross sections and equilibrium fractions of ions and atoms in metal vapor targets. The goal is to obtain experimental information on atomic collision processes of importance to the Magnetic Fusion Energy Program. In particular, in connection with the development of negative ion sources, we have measured D^- formation cross sections in alkaline-earth metal vapor targets. During the period covered in this report we have completed electron transfer cross section measurements of D⁺ ions and D⁰ atoms in collision with calcium and strontium vapor. We have also completed differential cross section measurements for H^- formation in H⁺ + Mg collisions. Finally, state-of-the-art computer instrumentation has been interfaced to the experiment