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Statistical nature of secondary electron emission

Newson, DM; Kadokura, R; Brawley, SJ; Shipman, M; Laricchia, G; (2023) Statistical nature of secondary electron emission. Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms , 536 pp. 119-125. 10.1016/j.nimb.2023.01.008. Green open access

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Abstract

The energy-dependence of the secondary electron yield by electron impact on clean materials is shown, through comparisons with both experimental data and previous semi-empirical models, to be described well by a log-normal distribution. The maximum yield and corresponding energy are calculated in terms of the fit parameters. The function also agrees with the ‘universal curve’ obtained by expressing the experimental data in terms of the position and magnitude of maximum yield. The positron- and ion-induced secondary electron yields also exhibit a log-normal dependence and this is used to extend their energy ranges without prior knowledge of the position and magnitude of their maxima. In addition to their intrinsic usefulness, the results provide further support for the statistical description of inelastic processes advanced by Laricchia et al. (2018).

Type: Article
Title: Statistical nature of secondary electron emission
Open access status: An open access version is available from UCL Discovery
DOI: 10.1016/j.nimb.2023.01.008
Publisher version: https://doi.org/10.1016/j.nimb.2023.01.008
Language: English
Additional information: Copyright © 2023 The Author(s). Published by Elsevier B.V. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).
Keywords: Secondary electron, Energy-dependence, Statistical description, Log-normal
UCL classification: UCL
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Physics and Astronomy
URI: https://discovery.ucl.ac.uk/id/eprint/10163263
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