Quick extended x-ray absorption fine structure instrument with millisecond time scale, optimized for in situ applications

The Review of Scientific Instruments
S KhalidA Ganjoo

Abstract

In order to learn about in situ structural changes in materials at subseconds time scale, we have further refined the techniques of quick extended x-ray absorption fine structure (QEXAFS) and quick x-ray absorption near edge structure (XANES) spectroscopies at beamline X18B at the National Synchrotron Light Source. The channel cut Si (111) monochromator oscillation is driven through a tangential arm at 5 Hz, using a cam, dc motor, pulley, and belt system. The rubber belt between the motor and the cam damps the mechanical noise. EXAFS scan taken in 100 ms is comparable to standard data. The angle and the angular range of the monochromator can be changed to collect a full EXAFS or XANES spectrum in the energy range 4.7-40.0 KeV. The data are recorded in ascending and descending order of energy, on the fly, without any loss of beam time. The QEXAFS mechanical system is outside the vacuum system, and therefore changing the mode of operation from conventional to QEXAFS takes only a few minutes. This instrument allows the acquisition of time resolved data in a variety of systems relevant to electrochemical, photochemical, catalytic, materials, and environmental sciences.

References

Aug 7, 2001·Journal of Synchrotron Radiation·D Lützenkirchen-HechtR Frahm
Aug 22, 2001·Journal of Synchrotron Radiation·M RichwinR Frahm
Jul 21, 2004·Journal of Synchrotron Radiation·V A SoléF Natali
Feb 9, 2005·Physical Review Letters·O MathonS Pascarelli
Jun 22, 2005·Journal of Synchrotron Radiation·B Ravel, M Newville
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Oct 7, 2009·Proceedings of the National Academy of Sciences of the United States of America·Matthew Ginder-VogelDonald L Sparks

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Citations

Aug 7, 2010·The Review of Scientific Instruments·J StötzelR Frahm
Sep 23, 2014·Nature Communications·Matthew SiebeckerDonald Sparks
Oct 3, 2015·The Review of Scientific Instruments·O MüllerR Frahm
Mar 11, 2020·Journal of Synchrotron Radiation·Peter SjöblomSamuli Urpelainen
Oct 25, 2012·Journal of Synchrotron Radiation·Heng LiuHongjie Xu
Jan 9, 2018·Chemical Society Reviews·Alok M TripathiBing Joe Hwang
May 2, 2018·Journal of Synchrotron Radiation·Ulrike BoesenbergJan Garrevoet
Feb 22, 2011·Journal of Synchrotron Radiation·Jan StötzelRonald Frahm
Oct 25, 2012·Journal of Synchrotron Radiation·Jan StötzelRonald Frahm
Mar 21, 2017·Geochemical Transactions·Samantha L ShumlasDaniel R Strongin
Apr 29, 2011·Journal of Synchrotron Radiation·Nebojsa S MarinkovicAnatoly I Frenkel
Aug 24, 2017·The Journal of Physical Chemistry. a·Matthew G Siebecker, Donald L Sparks
Jun 19, 2012·Environmental Science & Technology·Narayan BhandariDaniel R Strongin
Jul 7, 2012·Environmental Science & Technology·Mengqiang ZhuGlenn A Waychunas
Feb 7, 2015·Environmental Science & Technology·Elizabeth B CerkezDaniel R Strongin

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Methods Mentioned

BETA
x-ray absorption spectroscopy

Software Mentioned

Athena
QEXAFS
EPICS
VME
WinXAS
Linux

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