A short working distance multiple crystal x-ray spectrometer
Rev. Sci. Instrum. 79, 123112 (2008); doi:10.1063/1.3048544
Published 23 December 2008
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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 K
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 L
2 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.
©2008 American Institute of Physics
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 L
2 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.
©2008 American Institute of Physics
| History: | Received 19 September 2008; accepted 24 November 2008; published 23 December 2008 |
| Permalink: |
http://link.aip.org/link/?RSINAK/79/123112/1 |
KEYWORDS and PACS
dysprosium,
manganese,
manganese compounds,
XANES,
X-ray emission spectra,
X-ray fluorescence analysis,
X-ray spectrometers
- 07.85.Nc
X-ray and γ-ray spectrometers - 82.80.Ej
X-ray, Mössbauer, and other γ-ray spectroscopic chemical analysis methods - 78.70.Dm
X-ray absorption spectra (condensed matter) - 61.05.cj
X-ray absorption spectroscopy (condensed matter structure determination) - 78.70.En
X-ray emission spectra and fluorescence (condensed matter) - YEAR: 2008
RELATED DATABASES
PUBLICATION DATA
0034-6748 (print)
1089-7623 (online)
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