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
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.