We have measured the electron emission statistics for Xe+ and Xe10+ ions in
cident on clean polycrystalline copper at grazing angles of 10 and 23. The
probability of no electron emission has been measured. The experimental dat
a for 2-10 keV Xe+ ions is well described by binomial distributions. For Xe
+ and Xe10+ the total electron yield has been determined. The potential and
kinetic emission components have been deduced.