title: X-ray imaging inside the focal spot of polycapillary optics using the coded aperture concept.
abstract: We present a method for x-ray imaging of objects inside the focal spot of polycapillary optics that resolves details smaller than the focal spot dimensions. This method employs coded aperture imaging, in which the micro-structure of polycapillary optics is treated as the coding pattern. Projection of the object is decoded from a magnified x-ray image of the polycapillary structure which is specifically sharpened by the object. Field of view can be extended by scanning the object across the focal spot.
authors.affiliation: Institute of Physics, Jagiellonian University, Reymonta 4, 30-059 Kraków, Poland.
authors.forename: K M
authors.initials: KM
authors.lastname: Dąbrowski
authors.forename: D T
authors.initials: DT
authors.lastname: Dul
authors.forename: P
authors.initials: P
authors.lastname: Korecki
mesh_terms: D004867:Equipment Design; D019544:Equipment Failure Analysis; D007909:Lenses; D011856:Radiographic Image Enhancement / Q000295:instrumentation*; D011859:Radiography / Q000295:instrumentation*