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The three-dimensional inverse scattering problem for the Helmholtz equation

Published online by Cambridge University Press:  24 October 2008

B. D. Sleeman
Affiliation:
Department of Mathematics, University of Dundee, Dundee, Scotland

Extract

In this paper we are concerned with solutions of the three-dimensional Helmholtz equation which are of class C2 (i.e. regular) in the exterior of a bounded domain D. In cylindrical polar coordinates (r, z, φ) such solutions satisfy the equation

in which we have dimensionalized the radial coordinate r so that the wave number is normalized to unity. If we further assume that u satisfies the Sommerfeld radiation condition

then u may be regarded as being generated by volume sources, surface sources, or point singularities, all of which are contained in D.

Type
Research Article
Copyright
Copyright © Cambridge Philosophical Society 1973

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