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Calculations of electron inelastic mean free paths. V. Data for 14 organic compounds over the 50–2000 eV range

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Tanuma, S., Powell, C. J., Penn, D. R.·1994·Surface and Interface Analysis

Abstract

We report calculations of electron inelastic mean free paths (IMFPs) of 50–2000 eV electrons for a group of 14 organic compounds: 26‐ n ‐paraffin, adenine, β‐carotene, bovine plasma albumin, deoxyribonucleic acid, diphenylhexatriene, guanine, kapton, polyacetylene, poly(butene‐1‐sulfone), polyethylene, polymethylmethacrylate, polystyrene and poly(2‐vinylpyridine). The computed IMFPs for these compounds showed greater similarities in magnitude and in the dependences on electron energy than was found in our previous calculations for groups of elements and inorganic compounds (Papers II and III in this series). Comparison of the IMFPs for the organic compounds with values obtained from our predictive IMFP formula TPP‐2 showed systematic differences of ∼40%. These differences are due to the extrapolation of TPP‐2 from the regime of mainly high‐density elements (from which it had been developed and tested) to the low‐density materials such as the organic compounds. We analyzed the IMFP data for the groups of elements and organic compounds together and derived a modified empirical expression for one of the parameters in our predictive IMFP equation. The modified equation, denoted TPP‐2M, is believed to be satisfactory for estimating IMFPs in elements, inorganic compounds and organic compounds.

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Metadata

Authors
Tanuma, S., Powell, C. J., & Penn, D. R.
Venue
Surface and Interface Analysis
Publisher
Wiley
Published
1994-03
Volume
21
Issue
3
Pages
165-176
ISSN
  • 0142-2421 (ISSN-L)
  • 1096-9918
OpenAlex
W2017062950
Cited by
2,753
References
20
FWCI
29.98
Type
journal article
Language
en
Open access
green

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CoChat. (2026). Citation check: Calculations of electron inelastic mean free paths. V. Data for 14 organic compounds over the 50–2000 eV range. https://app.cochat.ai/papers/10.1002/sia.740210302
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Tanuma, S., Powell, C. J., & Penn, D. R. (1994). Calculations of electron inelastic mean free paths. V. Data for 14 organic compounds over the 50–2000 eV range. Surface and Interface Analysis. https://doi.org/10.1002/sia.740210302

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