CONVOY ELECTRON-EMISSION FROM SURFACES

Citation
Co. Reinhold et al., CONVOY ELECTRON-EMISSION FROM SURFACES, Nuclear instruments & methods in physics research. Section B, Beam interactions with materials and atoms, 99(1-4), 1995, pp. 50-53
Citations number
27
Categorie Soggetti
Physics, Nuclear","Nuclear Sciences & Tecnology","Instument & Instrumentation
ISSN journal
0168583X
Volume
99
Issue
1-4
Year of publication
1995
Pages
50 - 53
Database
ISI
SICI code
0168-583X(1995)99:1-4<50:CEFS>2.0.ZU;2-D
Abstract
We present results of a microscopic simulation of fast electron emissi on in glancing-angle ion-surface collisions. Our model accounts for bo th dynamic image interactions and multiple scattering near the surface and predicts a pronounced convoy electron peak for small emission ang les. Good agreement is found with our recent coincidence experiments f or 0.2-0.5 MeV/u Li ions interacting with SnTe(001) surfaces. We find that convoy electrons principally originate from target core states an d are emitted while the ion is in very close proximity to the topmost layer of target atoms. Because of the rapid charge changing cycle that the ions undergo during emission, almost no correlation is found betw een the convoy peak position and the final charge state of the ions.