Abstract
The transition-matrix ( <tex xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">T</tex> -matrix) approach to acoustic scattering is used to investigate scattering by high-aspect-ratio solid elastic targets. Results for several different materials are presented over a <tex xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">KL/2</tex> range of 0.5-16.0 for targets with aspect ratios from 1 to 10. It is demonstrated that the phase velocity of the Rayleigh resonances on solid spheroids is closely related to the shear speed of the material. In addition, high- <tex xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">Q</tex> resonant peaks are shown to dominate the backscattered response for many high-aspect-ratio targets.
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