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The occurrence of parasitic reflections from LiF (220) analysing crystals
Author(s) -
Post B.,
Jenkins R.
Publication year - 1972
Publication title -
x‐ray spectrometry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.447
H-Index - 45
eISSN - 1097-4539
pISSN - 0049-8246
DOI - 10.1002/xrs.1300010408
Subject(s) - collimator , divergence (linguistics) , crystal (programming language) , orientation (vector space) , optics , physics , mathematics , geometry , computer science , philosophy , linguistics , programming language
An explanation is offered for the appearance of parasitic reflections from LiF (220) analysing crystals. The reflections appear to stem from an unrestricted vertical divergence at the primary collimator allowing entry of reflections from planes other than that to which the crystal is cut. Careful orientation of the crystal boule before cutting would seem to offer the most convenient way of avoiding the problem.