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Title: A Versatile Medium-Resolution X-ray Emission Spectrometer for Diamond Anvil Cell Applications

Abstract

We present design and performance details for a polycapillary-coupled x-ray spectrometer that provides very high collection efficiency at a moderate energy resolution suitable for many studies of nonresonant x-ray emission spectroscopy, especially for samples of heavy elements under high pressures. Using a single Bragg analyzer operating close to a backscattering so as to minimize the effect of the weak divergence of the quasicollimated exit beam from the polycapillary optic, this instrument can maintain a typical energy resolution of 5 eV over photon energies from 5 keV to 10 keV. We find dramatically improved count rates as compared to a traditional higher-resolution instrument based on a single spherically-bent crystal analyzer.

Authors:
; ; ; ; ; ; ; ;
Publication Date:
Research Org.:
Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1094930
Report Number(s):
PNNL-SA-95067
KP1704020
DOE Contract Number:  
AC05-76RL01830
Resource Type:
Journal Article
Journal Name:
Review of Scientific Instruments, 84(8):Article No. 083908
Additional Journal Information:
Journal Name: Review of Scientific Instruments, 84(8):Article No. 083908
Country of Publication:
United States
Language:
English

Citation Formats

Mortensen, Devon R., Seidler, G. T., Bradley, J. A., Lipp, M. J., Evans, W. J., Chow, P., Xiao, Y. M., Boman, G., and Bowden, Mark E. A Versatile Medium-Resolution X-ray Emission Spectrometer for Diamond Anvil Cell Applications. United States: N. p., 2013. Web. doi:10.1063/1.4819257.
Mortensen, Devon R., Seidler, G. T., Bradley, J. A., Lipp, M. J., Evans, W. J., Chow, P., Xiao, Y. M., Boman, G., & Bowden, Mark E. A Versatile Medium-Resolution X-ray Emission Spectrometer for Diamond Anvil Cell Applications. United States. https://doi.org/10.1063/1.4819257
Mortensen, Devon R., Seidler, G. T., Bradley, J. A., Lipp, M. J., Evans, W. J., Chow, P., Xiao, Y. M., Boman, G., and Bowden, Mark E. 2013. "A Versatile Medium-Resolution X-ray Emission Spectrometer for Diamond Anvil Cell Applications". United States. https://doi.org/10.1063/1.4819257.
@article{osti_1094930,
title = {A Versatile Medium-Resolution X-ray Emission Spectrometer for Diamond Anvil Cell Applications},
author = {Mortensen, Devon R. and Seidler, G. T. and Bradley, J. A. and Lipp, M. J. and Evans, W. J. and Chow, P. and Xiao, Y. M. and Boman, G. and Bowden, Mark E.},
abstractNote = {We present design and performance details for a polycapillary-coupled x-ray spectrometer that provides very high collection efficiency at a moderate energy resolution suitable for many studies of nonresonant x-ray emission spectroscopy, especially for samples of heavy elements under high pressures. Using a single Bragg analyzer operating close to a backscattering so as to minimize the effect of the weak divergence of the quasicollimated exit beam from the polycapillary optic, this instrument can maintain a typical energy resolution of 5 eV over photon energies from 5 keV to 10 keV. We find dramatically improved count rates as compared to a traditional higher-resolution instrument based on a single spherically-bent crystal analyzer.},
doi = {10.1063/1.4819257},
url = {https://www.osti.gov/biblio/1094930}, journal = {Review of Scientific Instruments, 84(8):Article No. 083908},
number = ,
volume = ,
place = {United States},
year = {Wed Aug 28 00:00:00 EDT 2013},
month = {Wed Aug 28 00:00:00 EDT 2013}
}