title: Generalised Cornu spirals: an experimental study using hard x-rays.
abstract: The Cornu spiral is a graphical aid that has been used historically to evaluate Fresnel integrals. It is also the Argand-plane mapping of a monochromatic complex scalar plane wave diffracted by a hard edge. We have successfully reconstructed a Cornu spiral due to diffraction of hard x-rays from a piece of Kapton tape. Additionally, we have explored the generalisation of the Cornu spiral by observing the Argand-plane mapping of complex scalar electromagnetic fields diffracted by a cylinder and a sphere embedded within a cylinder.
authors.forename: Freda
authors.initials: F
authors.lastname: Werdiger
authors.forename: Marcus J
authors.initials: MJ
authors.lastname: Kitchen
authors.forename: David M
authors.initials: DM
authors.lastname: Paganin