High resolution studies of electron capture and excitation by 0° projectile electron spectroscopy

Abstract

A tandem 45° parallel-plate electron spectrometer has been developed for high resolution electron studies of atomic collision processes using the method of 0° electron spectroscopy. High resolution projectile K-Auger electron spectra have been obtained in a state-selective study of transfer-excitation (TE) and single excitation in collisions of 4.5–33 MeV F 6+ with He and H 2 targets. A high resolution measurement of 9.5 MeV F 7+ with He yielded preliminary information on state-selective capture to the metastable F 7+ (1s2s) state. Future plans include studies of F q + + T (q: 6−9; T: H 2, He, Ne) to determine absolute state-selective cross sections for transfer-excitation, single and double electron capture.