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2006 | 109 | 6 | 789-800
Article title

Influence of Recoil Effect and Surface Excitations on the Inelastic Mean Free Paths of Electrons in Polymers

Content
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EN
Abstracts
EN
In this work, the influence of recoil effect and surface excitations on the inelastic mean free paths for polythiophenes is investigated. The inelastic mean free paths of electrons in polythiophenes are measured with the elastic peak electron spectroscopy method using the Ag standard and the electron elastic scattering cross-sections from the database NIST 3.1 in the electron kinetic energy range 200-5000 eV. The Monte Carlo model is applied for evaluating the electron backscattering intensities from the polymers and the Ag standard, as well as for evaluating electrons quasi-elastically backscattered from atoms of different atomic numbers (the recoil effect). The surface excitation corrections are accounted for using the formalism of Chen, with the material parameters for polythiophenes evaluated from the elastic peak electron spectroscopy method. Deviations due to recoil effect and surface excitations to the inelastic mean free paths are compared and discussed. Correction to the inelastic mean free paths due to recoil effect is considerable but is smaller, however, than the correction due to surface excitations. Accounting for recoil effect and surface excitations leads to improvement of the inelastic mean free paths, as compared to the inelastic mean free paths resulting from the predictive formulae of Gries.
Keywords
EN
Publisher

Year
Volume
109
Issue
6
Pages
789-800
Physical description
Dates
published
2006-06
received
2005-07-11
(unknown)
2006-01-20
(unknown)
2006-03-14
Contributors
author
  • Institute of Physical Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, 01-224 Warszawa, Poland
author
  • Institute of Physical Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, 01-224 Warszawa, Poland
author
  • Institute of Physical Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, 01-224 Warszawa, Poland
author
  • Institute for Technical Physics and Materials Science, Hungarian Academy of Sciences, P.O. Box 49, 1545 Budapest, Hungary
author
  • Institute for Technical Physics and Materials Science, Hungarian Academy of Sciences, P.O. Box 49, 1545 Budapest, Hungary
author
  • Research Institute for Nuclear Physics ATOMKI, Hungarian Academy of Sciences, P.O. Box 51, 4001, Debrecen, Hungary
author
  • Research Institute for Nuclear Physics ATOMKI, Hungarian Academy of Sciences, P.O. Box 51, 4001, Debrecen, Hungary
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Document Type
Publication order reference
Identifiers
YADDA identifier
bwmeta1.element.bwnjournal-article-appv109n612kz
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