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XANES and EXAFS of dilute solutions of transition metals at XFELs
- Source :
- Journal of synchrotron radiation, vol 26, iss Pt 5, J Synchrotron Radiat
- Publication Year :
- 2019
- Publisher :
- eScholarship, University of California, 2019.
-
Abstract
- This work has demonstrated that X-ray absorption spectroscopy (XAS), both Mn XANES and EXAFS, of solutions with millimolar concentrations of metal is possible using the femtosecond X-ray pulses from XFELs. Mn XAS data were collected using two different sample delivery methods, a Rayleigh jet and a drop-on-demand setup, with varying concentrations of Mn. Here, a new method for normalization of XAS spectra based on solvent scattering that is compatible with data collection from a highly variable pulsed source is described. The measured XANES and EXAFS spectra of such dilute solution samples are in good agreement with data collected at synchrotron sources using traditional scanning protocols. The procedures described here will enable XFEL-based XAS on dilute biological samples, especially metalloproteins, with low sample consumption. Details of the experimental setup and data analysis methods used in this XANES and EXAFS study are presented. This method will also benefit XAS performed at high-repetition-rate XFELs such as the European XFEL, LCLS-II and LCLS-II-HE.
- Subjects :
- Nuclear and High Energy Physics
Materials science
Absorption spectroscopy
Atom and Molecular Physics and Optics
Analytical chemistry
Biophysics
Optical Physics
010402 general chemistry
Accelerator Physics and Instrumentation
01 natural sciences
Physical Chemistry
Metal
03 medical and health sciences
Transition metal
Instrumentation
030304 developmental biology
0303 health sciences
X-ray absorption spectroscopy
Radiation
Extended X-ray absorption fine structure
X-ray near-edge spectroscopy
Acceleratorfysik och instrumentering
Condensed Matter Physics
Research Papers
XANES
0104 chemical sciences
visual_art
Femtosecond
visual_art.visual_art_medium
Atom- och molekylfysik och optik
extended X-ray absorption fine structure
X-ray free electron lasers
Physical Chemistry (incl. Structural)
Subjects
Details
- Database :
- OpenAIRE
- Journal :
- Journal of synchrotron radiation, vol 26, iss Pt 5, J Synchrotron Radiat
- Accession number :
- edsair.doi.dedup.....886ac05b8739bc5b089b34c4b8006bc2