Plasma and Fusion Research

Volume 1, 025 (2006)

Rapid Communications

Numerical Study of Electromagnetic Surface Wave on Corrugated Metal Surface
Osamu WATANABE, Tsuguhiro WATANABE1), Kazuo OGURA2), Tsuyoshi IMAI and Teruji CHO
Plasma Research Center, University of Tsukuba
1)
National Institute for Fusion Science
2)
Graduate School of Science and Technology, Niigata University
(Received 21 January 2006 / Accepted 10 February 2006 / Published 16 May 2006)

Abstract

The dispersion characteristics of surface wave propagated on a deeply corrugated metal surface are analyzed. Surface wave becomes slow wave, because surface wave is evanescent wave to the direction away from the corrugated metal surface. The surface wave is possible to be backward wave, due to the periodic nature of the corrugation of metal surface. Because the Rayleigh hypothesis has failed for the analysis of an electromagnetic field upon a deeply corrugated surface, the dispersion relations are solved by a direct numerical computation of wave equations.

Keywords

surface wave, slow wave structure, backward wave, Rayleigh hypothesis

DOI: 10.1585/pfr.1.025

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References

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This paper may be cited as follows:

Osamu WATANABE, Tsuguhiro WATANABE, Kazuo OGURA, Tsuyoshi IMAI and Teruji CHO, Plasma Fusion Res. 1, 025 (2006).