# Cones with convoluted geometry that always scatter or radiate

@inproceedings{Blaasten2021ConesWC, title={Cones with convoluted geometry that always scatter or radiate}, author={Emilia Blaasten and Valter Pohjola}, year={2021} }

We investigate fixed energy scattering from conical potentials having an irregular cross-section. The incident wave can be any arbitrary non-trivial Herglotz wave. We show that a large number of such local conical scatterers scatter all incident waves, meaning that the far-field will always be non-zero. In essence there are no incident waves for which these potentials would seem transparent at any given energy. We show more specifically that there is a large collection of star-shaped cones…

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