SLAC National Accelerator Lab., Menlo Park, CA (United States)
National Renewable Energy Lab. (NREL), Golden, CO (United States)
SLAC National Accelerator Lab., Menlo Park, CA (United States); Center of High Pressure Science & Technology Advanced Research (HPSTAR), Shanghai (China)
SLAC National Accelerator Laboratory, 2575 Sand Hill Rd., Menlo Park, California 94025, USA
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.
Nowak, S. H., et al. "A versatile Johansson-type tender x-ray emission spectrometer." Review of Scientific Instruments, vol. 91, no. 3, Mar. 2020. https://doi.org/10.1063/1.5121853
Nowak, S. H., Armenta, R., Schwartz, C. P., Gallo, A., Abraham, B., Garcia-Esparza, A. T., Biasin, E., Prado, A., Maciel, A., Zhang, D., Day, D., Christensen, S., Kroll, T., Alonso-Mori, R., Nordlund, D., Weng, T. -C., & Sokaras, D. (2020). A versatile Johansson-type tender x-ray emission spectrometer. Review of Scientific Instruments, 91(3). https://doi.org/10.1063/1.5121853
Nowak, S. H., Armenta, R., Schwartz, C. P., et al., "A versatile Johansson-type tender x-ray emission spectrometer," Review of Scientific Instruments 91, no. 3 (2020), https://doi.org/10.1063/1.5121853
@article{osti_1603648,
author = {Nowak, S. H. and Armenta, R. and Schwartz, C. P. and Gallo, A. and Abraham, B. and Garcia-Esparza, A. T. and Biasin, E. and Prado, A. and Maciel, A. and Zhang, D. and others},
title = {A versatile Johansson-type tender x-ray emission spectrometer},
annote = {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.},
doi = {10.1063/1.5121853},
url = {https://www.osti.gov/biblio/1603648},
journal = {Review of Scientific Instruments},
issn = {ISSN 0034-6748},
number = {3},
volume = {91},
place = {United States},
publisher = {American Institute of Physics (AIP)},
year = {2020},
month = {03}}