Elastic wave scattering by shelled spherical scatterers in a focused field

Journal of the Acoustical Society of America

Volumn 99, Issue 5, 1996, Pages 2862-2870

  Mittleman, John ^a   Thompson, R B ^b   Han, Y K ^b  

^a NAVAL SURFACE WARFARE CENTER   (United States)

^b Iowa State University   (United States)

Author keywords

[No Author keywords available]

Indexed keywords

ARTICLE; GRAIN; MATHEMATICAL ANALYSIS; MATHEMATICAL COMPUTING; PRIORITY JOURNAL; RADIATION SCATTERING; SOUND TRANSMISSION; ULTRASOUND; WAVEFORM;

EID: 0029871722     PISSN: 00014966     EISSN: None     Source Type: Journal    
DOI: 10.1121/1.414788     Document Type: Article

References (42)

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30. O'Neil'S derivation requires kR≫1, and that wavelength (λ) and the depth of the concave transducer (h) be small compared to the transducer element's radius.
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35. 2+12)), which approaches A for sufficiently high frequency. In our experimental work the dimensionless quantity kh was greater than 50 at the transducer's center frequency, and the resulting difference between the center of curvature and the focal point was approximately 45 μm.
36. W. H. Press, Numerical Recipes: The Art of Scientific Computing (FORTRAN Version) (Cambridge U.P., New York, 1990).
37. We note that these waves would more accurately be classified as Stonely waves, rather than Rayleigh waves, and that to speak of a "circumnavigating wave" is not completely appropriate since the scatterer size in these studies is sufficiently small that a ray approximation is not expected to be very accurate.
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40. Personal communication with F. J. Margetan, Iowa State University. Ames, IA.
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