LOW-FREQUENCY ACOUSTIC SCATTERING BY GAS-FILLED PROLATE SPHEROIDS IN LIQUIDS - II - COMPARISON WITH THE EXACT SOLUTION

This sequential paper describes a comparison between the simple closed solution proposed in a previous paper [Z. Ye, J. Acoust. Sec. Am. 101 , 1945-1952 (1997)] with the exact solution for scattering of acoustic waves by gas-filled prolate spheroids at low frequencies. The analysi s and comparison show that the low-frequency acoustic scattering by pr olate spheroid gas bubbles has resonance features, and can be rather a ccurately described by the proposed simple formula. It is shown that t he results from the simple analytic solution agree remarkably well wit h those obtained by the exact solution. (C) 1998 Acoustical Society of America. [S0001-4466(98)01402-7].