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Calculations of electron inelastic mean free paths.VIII. Data for 15 elemental solids over the 50-2000 eV range

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We report calculations of electron inelastic mean free paths (IMFPs) for 50 eV to 2000 eV electrons in 14 elemental solids (Li, Be, diamond, graphite, Na, K, Sc, Ge, In, Sn, Cs, Gd, Tb, and Dy) and for one solid (Al) using better optical data than in our previous work. The new IMFPs have also been used to test our TPP-2M equation for estimating IMFPs in these materials. We found surprisingly large root-mean-square deviations (from 39.3 % to 71.8 %) between IMFPs calculated from TPP-2M and those calculated here from optical data for diamond, graphite, and cesium. An analysis showed that these deviations occurred for relatively small computed values of the parameter beta in the TPP-2M equation (beta ~ 0.01 for diamond and graphite) and for a relatively large value of beta (beta ~ 0.25 for Cs). While such extreme values of beta are unlikely to be encountered for many other materials, the present results indicate an aditional limitation in the reliability of the TPP-2M equation. We also show that the parameter Nv in the TPP-2M equation should be computed for the rare-earth elements from the number of valence electrons and the six 5p electrons.

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  • 01/01/2005
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  • 30/05/2023
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    This is the peer reviewed version of the following article: Calculations of electron inelastic mean free paths.VIII. Data for 15 elemental solids over the 50-2000 eV range, which has been published in final form at https://doi.org/10.1002/sia.1997. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions. This article may not be enhanced, enriched or otherwise transformed into a derivative work, without express permission from Wiley or by statutory rights under applicable legislation. Copyright notices must not be removed, obscured or modified. The article must be linked to Wiley’s version of record on Wiley Online Library and any embedding, framing or otherwise making available the article or pages thereof by third parties from platforms, services and websites other than Wiley Online Library must be prohibited.

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