Interference between RTEA and elastically scattered target electrons in 20 MeV F6+ + H2 collisions

Abstract

High‐resolution high‐statistics Auger electron spectra were obtained in collisions of 20 MeV F6+ (1s22s) projectiles with H2 targets using 0° projectile electron spectroscopy. The 1s2s2p2 3,1D→1s22s (D—transitions) and the 1s2s2p2 1D→1s22p (D—transition) Auger transitions were clearly resolved. The 1s2s2p2 3,1D projectile states can be formed by Resonance Transfer and Excitation (RTE),1,2 and thus their Auger decay to the 1s22s state can interfere with elastically scattered target electrons giving rise to characteristic Fano‐like line shapes. Their Auger decay to the 1s22p state can interfere with inelastically scattered target electrons. Comparison with the results of existing RTEA‐elastic electron scattering interference theory and asymmetry parameter are discussed. For the RTEA‐inelastic electron scattering interference, calculations will soon be available.