Abstract
The method of Ying and Truell for studying the scattering of longitudinal elastic waves by spherical obstacles is applied to the particular case of scattering by a fluid-filled cavity that is embedded in an isotropic elastic solid. Exact solutions for the expansion coefficients which describe the scattered elastic wave are obtained. The limiting case of kaâȘ1 (Rayleigh scattering) is considered in detail. A general expression for the scattering cross section is derived.
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