ISSN:
0142-2421
Keywords:
Chemistry
;
Polymer and Materials Science
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Physics
Notes:
The influence of elastic scattering of photoelectrons in the substrate and in an adventitious hydrocarbon overlayer on the effective inelastic mean free path and the effective asymmetry parameter has been investigated by Monte Carlo calculation. The results are representative of 27 chemical elements, asymmetry parameters 0.6 ≤ β ≤ 2.0, kinetic electron energies 300 ≤ Ekin ≤ 1500 eV and overlayer thicknesses 0 ≤ t ≤ 26.6 Å. For an application in quantitative surface analysis by XPS we propose the use of the effective inelastic mean free path (0.951 IMFP, tabulated values) and the effective asymmetry parameter βeff. The calculation of βeff is performed by tabulated values of β, inelastic mean free paths and measured reduced thicknesses of the hydrocarbon layer.
Additional Material:
3 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/sia.740200705
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