title: Edge diffraction of creeping rays
abstract: Explicit formulas are derived for waves modeled by the scalar two-dimensional Helmholtz equation for the field that is diffracted when surface creeping rays encounter an infinitely sharp edge. Both Neumann and Dirichlet boundary conditions are analyzed, and the diffracted field is found to be an order to magnitude smaller in the latter case.
authors.affiliation: OCIAM, Mathematical Institute, Oxford, United Kingdom. chapman@maths.ox.ac.uk
authors.initials: SJ
authors.lastname: Chapman
authors.initials: JR
authors.lastname: Ockendon
authors.initials: VH
authors.lastname: Saward