Premium
Tracking: a method for structural characterization of grains in powders or polycrystals
Author(s) -
Lauridsen E. M.,
Schmidt S.,
Suter R. M.,
Poulsen H. F.
Publication year - 2001
Publication title -
journal of applied crystallography
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.429
H-Index - 162
ISSN - 1600-5767
DOI - 10.1107/s0021889801014170
Subject(s) - characterization (materials science) , tracking (education) , translation (biology) , materials science , monochromatic color , rotation (mathematics) , diffraction , optics , zone axis , detector , symmetry (geometry) , beam (structure) , dimension (graph theory) , sample (material) , physics , geometry , electron diffraction , mathematics , chemistry , psychology , pedagogy , biochemistry , messenger rna , pure mathematics , gene , thermodynamics
A method is presented for fast and non‐destructive characterization of the individual grains inside bulk materials (powders or polycrystals). The positions, volumes and orientations of hundreds of grains are determined simultaneously. An extension of the rotation method is employed: a monochromatic beam of high‐energy X‐rays, focused in one dimension, impinges on the sample and the directions of the diffracted beams are traced by translation of two‐dimensional detectors. Algorithms suitable for on‐line analysis are described, including a novel indexing approach, where the crystal symmetry is used directly by scanning in Euler space. The method is verified with a simulation of 100 grains.