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періодичних видань НАН України
Rayleigh and Wood anomalies in the diffraction of acoustic waves from the periodically corrugated surface of an elastic medium
Репозиторій DSpace/Manakin
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Rayleigh and Wood anomalies in the diffraction of acoustic waves from the periodically corrugated surface of an elastic medium
Тема:
К 100-летию со дня рождения К.Б. Толпыго
Інший ID:
PACS: 62.30.+d, 46.40.Cd, 68.35.Iv
Посилання:
Rayleigh and Wood anomalies in the diffraction of acoustic waves from the periodically corrugated surface of an elastic medium / A.A. Maradudin, I. Simonsen // Физика низких температур. — 2016. — Т. 42, № 5. — С. 455-462. — Бібліогр.: 20 назв. — англ.
Підтримка:
We dedicate this paper to the memory of Professor
K.B. Tolpygo, on the occasion of his 100-year anniversary.
He was a fine scholar and a fine person, whom it was
a pleasure to know. The research of I.S. was supported
in part by the Research Council of Norway Contract
No. 216699.
Дата:
2016
Переглядів:
757
Завантажень:
419
Анотація:
By the use of the Rayleigh method we have calculated the angular dependence of the reflectivity and the efficiencies of several other diffracted orders when the periodically corrugated surface of an isotropic elastic medium is illuminated by a volume acoustic wave of shear horizontal polarization. These dependencies display the signatures of Rayleigh and Wood anomalies, usually associated with the diffraction of light from a metallic grating. The Rayleigh anomalies occur at angles of incidence at which a diffracted order appears or disappears; the Wood anomalies here are caused by the excitation of the shear horizontal surface acoustic waves supported by the periodically corrugated surface of an isotropic elastic medium. The dispersion curves of these waves in both the nonradiative and radiative regions of the frequency-wavenumber plane are calculated, and used in predicting the angles of incidence at which the Wood anomalies are expected to occur.
