Determination of the electron inelastic mean free path in polyacetylene byelastic peak electron spectroscopy using different spectrometers

Citation
B. Lesiak et al., Determination of the electron inelastic mean free path in polyacetylene byelastic peak electron spectroscopy using different spectrometers, APPL SURF S, 145, 1999, pp. 168-172
Citations number
20
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science","Material Science & Engineering
Journal title
APPLIED SURFACE SCIENCE
ISSN journal
01694332 → ACNP
Volume
145
Year of publication
1999
Pages
168 - 172
Database
ISI
SICI code
0169-4332(199904)145:<168:DOTEIM>2.0.ZU;2-6
Abstract
The inelastic mean free path (IMFP) values for organic materials are very l imited. Numerous data have been published mainly for elemental solids, bina ry alloys and semiconductors. Generally, the IMFP values for different ener gies can be determined from the theoretical models involving the optical da ta, from predictive formulas, and from the experimental method called the e lastic peak electron spectroscopy (EPES). In the present work the IMFPs in N-(CH)(x) polyacetylene (unstretched), synthesised according to Naarmann an d Theophilou, and this polyacetylene doped with Pd were determined. The IMF Ps energy dependence for the above samples has been obtained from the EPES in the primary electron energy range of 200-5000 eV. The experimental data have been recorded using three different spectrometers and compared with th e theoretical data available. (C) 1999 Elsevier Science B.V. All rights res erved.