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Plasmon gain by core-level electrons or elastic electrons observed in past studies seems to be of no practical value in material characterization, mainly because of their ultralow signal intensities. Nevertheless, in the emission spectra of Au samples, we have observed plasmon gain in secondary electrons. The electrons gain energy from surface plasmons after escaping from the surface and thereby only carry surface-plasmon information in the vacuum above the surface. Because the intensity of the emitted SEs is strong, rivaling that of core-level or elastic electrons, the observed phenomenon has in practice the potential to image directly in space the surface plasmon near but exterior to the metal surface.

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  This document is the Accepted Manuscript version of a Published Work that appeared in final form in Observation of Plasmon Energy Gain for Emitted Secondary Electron in Vacuo, copyright © 2019 American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see https://pubs.acs.org/doi/10.1021/acs.jpclett.9b02135.

Keyword: Secondary Electron, Plasmon Energy Gain

Date published: 2019-10-03

Publisher: American Chemical Society (ACS)

Journal:

• Journal of Physical Chemistry Letters (ISSN: 19487185) vol. 10 issue. 19 p. 5770-5775

Funding:

Manuscript type: Author's version (Accepted manuscript)

MDR DOI: https://doi.org/10.48505/nims.3876

First published URL: https://doi.org/10.1021/acs.jpclett.9b02135

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Updated at: 2024-01-05 22:11:31 +0900

Published on MDR: 2023-04-10 15:39:51 +0900