Publications in Scientific Journals:
W. Meissl, D. Winklehner, F. Aumayr, M. Simon, R. Ginzel, J.R. Crespo López-Urrutia, J. Ullrich, B. Solleder, C. Lemell, J. Burgdörfer:
"Electron Emission from Insulators Irradiated by Slow Highly Charged Ions";
e-Journal of Surface Science and Nanotechnology,
Total electron emission yields have been measured for the first time resulting from impact of slow highly charged
Arq+ (q ! 17), Xeq+ (q ! 50) and Hgq+ (q ! 68) ions on clean insulating LiF(001) and CaF2(111) surfaces at
various impact angles. The surprisingly large yields show that even for the highest projectile charge states, a
local charge-up of the surface poses no barrier for electron emission. We demonstrate that this is due to a strong
sub-surface contribution in the potential electron emission process which is considerably more efficient in insulators
because of the increased inelastic mean free path and the production of secondary electrons.
Electron emission measurements; Alkali halides; Single crystal surfaces; Auger ejection; Ion-solid interactions;
Created from the Publication Database of the Vienna University of Technology.