Summary
In this paper the three dimensional scattering of a plane and a spherical wave by an arbitrary smooth convex object will be considered.
These problems are solved for large values of frequency by means of ray theory and the theory of boundary layer expansions.
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References
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Hermans, A.J. Diffraction of a wave at high frequencies by an arbitrary smooth convex object. J Eng Math 2, 141–151 (1968). https://doi.org/10.1007/BF01535555
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DOI: https://doi.org/10.1007/BF01535555