Abstract
We present a high energy resolution x-ray spectrometer for the tender x-ray regime (1.6–5.0 keV) that was designed and operated at Stanford Synchrotron Radiation Lightsource. The instrument is developed on a Rowland geometry (500 mm of radius) using cylindrically bent Johansson analyzers and a position sensitive detector. By placing the sample inside the Rowland circle, the spectrometer operates in an energy-dispersive mode with a subnatural line-width energy resolution (~0.32 eV at 2400 eV), even when an extended incident x-ray beam is used across a wide range of diffraction angles (~30° to 65°). The spectrometer is enclosed in a vacuum chamber, and a sample chamber with independent ambient conditions is introduced to enable a versatile and fast-access sample environment (e.g., solid/gas/liquid samples, in situ cells, and radioactive materials). The design, capabilities, and performance are presented and discussed.
Original language | American English |
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Number of pages | 12 |
Journal | Review of Scientific Instruments |
Volume | 91 |
Issue number | 3 |
DOIs | |
State | Published - 2020 |
NREL Publication Number
- NREL/JA-5K00-77171
Keywords
- catalysis
- crystal optics
- elastic scattering
- monochromators
- radioactive material
- resonant inelastic X-ray scattering
- spectroscopy
- synchrotron radiation