Open AccessSoller slit design and characteristics
Author(s) -
Bewer Brian
Publication year - 2012
Publication title -
journal of synchrotron radiation
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.172
H-Index - 99
ISSN - 1600-5775
DOI - 10.1107/s0909049511052319
Subject(s) - slit , materials science , optics , filter (signal processing) , noise (video) , transmission (telecommunications) , sample (material) , absorption (acoustics) , computer science , physics , telecommunications , image (mathematics) , computer vision , thermodynamics , artificial intelligence
For X‐ray absorption spectroscopy, either in transmission mode with concentrated samples or for dilute samples in fluorescence mode, it is advantageous to improve the signal‐to‐noise ratio by implementing a slit apparatus. Several investigations into the improvement of measurements when slits and filters are employed have been reported; however, these have always been for a particular design and are not transferable between dissimilar systems. A generalized approach to Soller slit design will be presented which enables a target level of noise rejection to be achieved by varying the number, size and placement of the filter and Soller slit assembly. A procedure for determining the reduction in efficiency of the Soller slits with respect to misalignment with the sample will also be discussed.