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Differential inverse inelastic mean free path and differential surface excitation probability retrieval from electron energy loss spectra

Afanas'ev, Viktor P. and Gryazev, Alexander S. and Efremenko, Dmitry and Kaplya, Pavel S. (2017) Differential inverse inelastic mean free path and differential surface excitation probability retrieval from electron energy loss spectra. Vacuum, 136, pp. 146-155. Elsevier. DOI: 10.1016/j.vacuum.2016.10.021 ISSN 0042-207X

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Official URL: http://dx.doi.org/10.1016/j.vacuum.2016.10.021

Abstract

Quantitative interpretation of the electron spectroscopy data requires the information on differential inverse inelastic mean free paths (DIIMFP) and differential surface excitation probabilities (DSEP). In this paper, we test an algorithm of extracting DIIMFP and DSEP from reflected electron energy loss spectra (REELS) and photo-electron spectra (PES) in which the desired functions are parametrized on the base of a classical Lorentz oscillator. Unknown parameters are found by using the fitting procedure. To account for surface excitations, the investigated samples are considered as multi-layer systems. Simulations of REELS and PES are performed by making use of the partial intensity approach. The partial intensities for the reflection function and the photo-electron density flux are computed on the base of the invariant imbedding method. Extracted DIIMFPs and DSEPs are compared with those obtained by other authors. Finally, REELS and PES spectra for Be, Mg, Al, Si, Nb and W are computed using the retrieved DIIMFPs and DSEPs, and compared with the experimental spectra. All comparisons show good agreement.

Item URL in elib:https://elib.dlr.de/109135/
Document Type:Article
Title:Differential inverse inelastic mean free path and differential surface excitation probability retrieval from electron energy loss spectra
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Afanas'ev, Viktor P.national research university "moscow power engineering institute", russiaUNSPECIFIED
Gryazev, Alexander S.national research university "moscow power engineering institute", russiaUNSPECIFIED
Efremenko, Dmitrydmitry.efremenko (at) dlr.deUNSPECIFIED
Kaplya, Pavel S.national research university "moscow power engineering institute", russiaUNSPECIFIED
Date:2017
Journal or Publication Title:Vacuum
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:136
DOI :10.1016/j.vacuum.2016.10.021
Page Range:pp. 146-155
Publisher:Elsevier
ISSN:0042-207X
Status:Published
Keywords:DIIMFP extraction; REELS deconvolution; PES; Invariant imbedding; XPS; Electron cross-section
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Earth Observation
DLR - Research area:Raumfahrt
DLR - Program:R EO - Erdbeobachtung
DLR - Research theme (Project):R - Remote sensing and geoscience
Location: Oberpfaffenhofen
Institutes and Institutions:Remote Sensing Technology Institute > Atmospheric Processors
Deposited By: Efremenko, Dr Dmitry
Deposited On:07 Dec 2016 12:14
Last Modified:06 Sep 2019 15:20

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