title: X-ray vortex beams: A theoretical analysis.
abstract: The recent demonstration that an optical vortex could be generated at x-ray wavelengths brings this interesting topological phenomenon into an entirely new regime with several possible applications. We examine the analytic propagation of an optical vortex generated in a synchrotron x-ray beam line. We compare the results obtained with the existing experimental data and further consider the generation and interpretation of mixed vortex-edge discontinuities which might be considered as non-integer charge vortices.
authors.forename: A
authors.initials: A
authors.lastname: Peele
authors.forename: K
authors.initials: K
authors.lastname: Nugent