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PHOTOEMISSION FROM THE DECAY OF SURFACE PLASMONS IN THIN FILMS OF Al

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HAL Id: jpa-00215345

https://hal.archives-ouvertes.fr/jpa-00215345

Submitted on 1 Jan 1973

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PHOTOEMISSION FROM THE DECAY OF SURFACE PLASMONS IN THIN FILMS OF Al

T. Callcott, E. T. Arakawa

To cite this version:

T. Callcott, E. T. Arakawa. PHOTOEMISSION FROM THE DECAY OF SURFACE PLAS- MONS IN THIN FILMS OF Al. Journal de Physique Colloques, 1973, 34 (C6), pp.C6-95-C6-95.

�10.1051/jphyscol:1973624�. �jpa-00215345�

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JOURNAL DE PHYSIQUE Colloque C6, supplkment au no 1 1

-

12, Tome 34, Nouembre-Dicembre 1973, page C6-95

PHOTOEMISSION FROM THE DECAY OF SURFACE PLASlMONS IN THIN FILMS OF A1

T. A. CALLCOTT, E. T . A R A K A W A (Tennessee)

University of Tennessee and Oak Ridge National Laboratory, Oak Ridge, USA

Abstract. - We have measured the yields and energy distributions of electrons generated by the decay of non-radiating surface plasmons in thin A1 films. The films are evaporated onto the flat surface of a MgFz semi-cylinder. Plasmons are generated at the vacuum interface of the film by light obliquely incident on the film through the substrate. Excitation of the plasmon modes occurs for a very narrow range of incident light angles. Reflection measurements as a function of angle show a sharp dip at this angle. Photoyields show a corresponding maximum as reported by Macek et al. [I]. Our measurements extend over a wider range of photon energies (4-10 eV) and include measurements of the energy distributions (EDC's) of both cr on-peak )) and cc off- peak )) photoemission. ce On peak )) EDC's are indistinguishable from those obtained with light incident on the film from the vacuum. cc Off-peak )) EDC's show an excess of low energy electrons.

The results are accounted for in terms of the distribution of electric field intensities in the Al film.

Reference

[I] MACEK, O m and STEINMAN, Phys. Stat. Sol. (6) 51 (1972) K 59.

Article published online by EDP Sciences and available at http://dx.doi.org/10.1051/jphyscol:1973624

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