SUB-EV ELECTRON SPECTROSCOPY IN ION-ATOM COLLISIONS

A newly designed spectrometer is presented, which is eminently suited for the measurement of electron velocity distributions in the sub‐eV electron energy region. The application of this spectrometer is demonstrated in an ion‐atom collision experiment, using a time‐of‐flight technique. As an example, the low‐energy electron spectrum of 4 keV ionizing H+−H2 collisions is shown.