A short working distance multiple crystal x-ray spectrometer
Review of Scientific Instruments
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Abstract
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.
Suggested Citation
Dickinson, B., Seidler, G., Webb, Z., Bradley, J., Nagle, K., Heald, S., Gordon, R., Chou, I., 2008, A short working distance multiple crystal x-ray spectrometer: Review of Scientific Instruments, v. 79, no. 12, https://doi.org/10.1063/1.3048544.
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | A short working distance multiple crystal x-ray spectrometer |
| Series title | Review of Scientific Instruments |
| DOI | 10.1063/1.3048544 |
| Volume | 79 |
| Issue | 12 |
| Publication Date | December 23, 2008 |
| Year Published | 2008 |
| Language | English |
| Larger Work Type | Article |
| Larger Work Subtype | Journal Article |
| Larger Work Title | Review of Scientific Instruments |