S. Cernusca et al 2005 Europhys. Lett. 70 768 doi:10.1209/epl/i2004-10521-x
S. Cernusca, M. Fürsatz, HP. Winter and F. Aumayr
Show affiliationsTotal electron emission yields for impact of H+, H2+, C+, N+, O+ and Ar+ ions (impact energy 2–10 keV) on clean highly oriented pyrolytic graphite (HOPG) have been measured. An enhancement in the electron yield of more than a factor of 2 is found when comparing results for differently oriented HOPG surfaces (orientation of the graphite layers with respect to the surface). By analyzing these data we elucidate the influence of electron transport on kinetic electron emission and derive direction-dependent mean escape depths for low-energy electrons.
34.35.+a Interactions of atoms and molecules with surfaces
79.20.Rf Atomic, molecular, and ion beam impact and interactions with surfaces
Issue 6 (June 2005)
Received 21 December 2004, accepted for publication 18 April 2005, in final form 18 April 2005
Published 11 May 2005
S. Cernusca et al 2005 Europhys. Lett. 70 768
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