title: Polycapillary Optics for Materials Science Studies: Instrumental Effects and Their Correction.
abstract: The instrumental effects related to the use of a polycapillary x-ray lens as primary beam collimator are here studied and the features observed in the measurements modelled via Monte-Carlo ray-tracing. Comparison with existing procedures is presented and experimental evidence of the accuracy improvements due to the use of a correction algorithm is shown.
authors.affiliation: Università di Trento, Dipartimento di Ingegneria dei Materiali e Tecnologie Industriali, Via Mesiano 77, 38050 Trento ( Italy).
authors.forename: M
authors.initials: M
authors.lastname: Leoni
authors.affiliation: Max Planck Institute for Metals Research, Heisenbergstr. 3, 70569 Stuttgart ( Germany).
authors.forename: U
authors.initials: U
authors.lastname: Welzel
authors.affiliation: Università di Trento, Dipartimento di Ingegneria dei Materiali e Tecnologie Industriali, Via Mesiano 77, 38050 Trento ( Italy).
authors.forename: P
authors.initials: P
authors.lastname: Scardi
keywords: instrumental effects; parallel beam geometry; polycapillary optics; residual stress analysis; texture analysis; x-ray diffraction; x-ray optics