BACKSCATTERING OF PROJECTILE-BOUND ELECTRONS FROM SOLID-SURFACES

Authors
TOBISCH M SCHOSNIG M KRONEBERGER K KUZEL M MAIER R JUNG M FIEDLER C ROTHARD H CLOUVAS A SUAREZ S HOFMANN D GROENEVELD KO
Citation
M. Tobisch et al., BACKSCATTERING OF PROJECTILE-BOUND ELECTRONS FROM SOLID-SURFACES, Nuclear instruments & methods in physics research. Section B, Beam interactions with materials and atoms, 86(1-2), 1994, pp. 143-146
Citations number
7
Categorie Soggetti
Physics, Nuclear","Nuclear Sciences & Tecnology","Instument & Instrumentation
Journal title
Nuclear instruments & methods in physics research. Section B, Beam interactions with materials and atoms → ACNP
ISSN journal
0168583X
Volume
86
Issue
1-2
Year of publication
1994
Pages
143 - 146
Database
ISI
SICI code
0168-583X(1994)86:1-2<143:BOPEFS>2.0.ZU;2-U
Abstract
The contribution of projectile ionization (PI) to secondary electron e mission is studied by collision of H-2+ and H-3+ ions (400 keV/u and 7 00 keV/u) with carbon, copper and gold targets (600 angstrom). The mea sured doubly differential intensity distribution shows a peak of lost projectile electrons near - upsilon(p). We describe the subtraction of the contribution of target ionization (TI), and compare the remaining electron intensities with a BEA calculation. For solids we observe a strong energy shift of the electron loss peak, which is compared with the influence of electron transport and binding energy. Furthermore, t he low energy tail of the electron loss peak indicates the simultaneou s occurrence of PI and TI. Finally we discuss the influence of surface conditions and the dependence of the observation angles on the measur ed electron intensities.