title: Soller slit design and characteristics.
abstract: 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.
authors.affiliation: Canadian Light Source, 101 Perimeter Road, Saskatoon, Saskatchewan, Canada S7N 0X4. brian.bewer@lightsource.ca
authors.forename: Brian
authors.initials: B
authors.lastname: Bewer
mesh_terms: D059629:Signal-To-Noise Ratio; D013050:Spectrometry, Fluorescence / Q000379:methods*; D056928:X-Ray Absorption Spectroscopy / Q000379:methods*