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Powder diffraction line profiles in Guinier‐type focusing cameras
Author(s) -
Ersson N. O.
Publication year - 1979
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/s0021889879012498
Subject(s) - microdensitometer , diffraction , line (geometry) , optics , powder diffraction , computer science , materials science , geometry , physics , crystallography , mathematics , chemistry
The aims of this investigation were to optimize the construction geometry of a Guinier camera, and to find a profile model useful for powder refinement work. A computer simulation of all possible directions for individually diffracted X‐rays was used to generate line profiles for a number of different situations. The influence of variations in camera geometry and specimen form are discussed. Microdensitometer data for a test film are compared with calculated profiles. An extension of the present method, which uses non‐continuous arrays, to the use of continuous functions to describe the profiles is discussed.