Journal article
Acoustic beam scattering and excitation of sphere resonance: Bessel beam example
The Journal of the Acoustical Society of America, Vol.122(1), pp.247-252
07/2007
Handle:
https://hdl.handle.net/2376/115872
PMID: 17614484
Abstract
The exact partial wave series for the scattering by a sphere centered on an ideal Bessel beam was recently given by Marston ["Scattering of a Bessel beam by a sphere," J. Acoust. Soc. Am. 121, 753-758 (2007)]. That series is applied here to solid elastic spheres in water and to an empty spherical shell in water. The examples are selected to illustrate the effect of varying the beam's conical angle so as to modify the coupling to specific resonances in the response of each type of sphere considered. The backscattering may be reduced or increased depending on properties of the resonance and of the specular contribution. Changing the conical angle is equivalent to changing the beamwidth. Some applications of the Van de Hulst localization principle to the interpretation of the partial wave series and to the interpretation of the scattering dependence on the beam's conical angle are discussed. Some potential applications to the analysis of the scattering by spheres of more general axisymmetric beams are noted.
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Details
- Title
- Acoustic beam scattering and excitation of sphere resonance: Bessel beam example
- Creators
- Philip L Marston - Department of Physics and Astronomy, Washington State University, Pullman, Washington 99164-2814, USA. marston@wsu.edu
- Publication Details
- The Journal of the Acoustical Society of America, Vol.122(1), pp.247-252
- Academic Unit
- Physics and Astronomy, Department of
- Publisher
- United States
- Identifiers
- 99900547688601842
- Language
- English
- Resource Type
- Journal article