title: Fundamental spatial resolution of an x-ray pore optic.
abstract: We investigate the fundamental spatial resolution of an x-ray pore optic as a function of the pore dimensions, the photon energy, and the focal length. We achieve this by calculating the shape of the focal spot, using diffraction integrals such that the half-energy width is determined. Quantitative results are presented for the X-Ray Evolving Universe Spectroscopy (XEUS) telescope, showing that a resolution of better than 2 arc sec half-energy width is possible by use of an optic with pore sizes of approximately 0.5 mm.
authors.affiliation: Cosine Science & Computing BV, Niels Bohrweg 11, 2333 CA Leiden, The Netherlands. a.mieremet@cosine.nl
authors.forename: Arjan L
authors.initials: AL
authors.lastname: Mieremet
authors.forename: Marco W
authors.initials: MW
authors.lastname: Beijersbergen