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Review of Scientific Instruments : A short working distance multiple crystal x-ray spectrometer

By B. Dickinson, G. T. Seidler, Z. W. Webb, J. A. Bradley, K. P. Nagle et al

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Book Id: WPLBN0002169682
Format Type: PDF eBook :
File Size: Serial Publication
Reproduction Date: 23 December 2008

Title: Review of Scientific Instruments : A short working distance multiple crystal x-ray spectrometer  
Author: B. Dickinson, G. T. Seidler, Z. W. Webb, J. A. Bradley, K. P. Nagle et al
Volume: Issue : December 2008
Language: English
Subject: Science, Physics, Natural Science
Collections: Periodicals: Journal and Magazine Collection (Contemporary), Review of Scientific Instruments Collection
Historic
Publication Date:
Publisher: American Institute of Physics

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G. T. Seidler, Z. W. Webb, J. A. Bradley, K. P. Nagle Et A, B. D. (n.d.). Review of Scientific Instruments : A short working distance multiple crystal x-ray spectrometer. Retrieved from http://www.gejl.org/


Description
Description: For x-ray spot sizes of a few tens of microns or smaller, a millimeter-sized flat analyzer crystal placed ∼ 1 cm from the sample will exhibit high energy resolution while subtending a collection solid angle comparable to that of a typical spherically bent crystal analyzer (SBCA) at much larger working distances. Based on this observation and a nonfocusing geometry for the analyzer optic, we have constructed and tested a short working distance (SWD) multicrystal x-ray spectrometer. This prototype instrument has a maximum effective collection solid angle of 0.14 sr, comparable to that of 17 SBCA at 1 m working distance. We find good agreement with prior work for measurements of the Mn Kβ x-ray emission and resonant inelastic x-ray scattering for MnO, and also for measurements of the x-ray absorption near-edge structure for Dy metal using Lα2 partial-fluorescence yield detection. We discuss future applications at third- and fourth-generation light sources. For concentrated samples, the extremely large collection angle of SWD spectrometers will permit collection of high-resolution x-ray emission spectra with a single pulse of the Linac Coherent Light Source. The range of applications of SWD spectrometers and traditional multi-SBCA instruments has some overlap, but also is significantly complementary.

 
 



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