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Title: A new synchrotron rapid-scanning X-ray fluorescence (SRS-XRF) imaging station at SSRL beamline 6-2

Journal Article · · Journal of Synchrotron Radiation (Online)

This paper describes a new large-range rapid-scan X-ray fluorescence (XRF) imaging station at beamline 6-2 at the Stanford Synchrotron Radiation Lightsource at SLAC National Accelerator Laboratory. This station uses a continuous rapid-scan system with a scan range of 1000 × 600 mm and a load capacity of up to 25 kg, capable of 25–100 µm resolution elemental XRF mapping and X-ray absorption spectroscopy (XAS) of a wide range of objects. XRF is measured using a four-element Hitachi Vortex ME4 silicon drift detector coupled to a Quantum Detectors Xspress3 multi-channel analyzer system. A custom system allows the X-ray spot size to be changed quickly and easilyviapinholes ranging from 25 to 100 µm, and the use of a poly-capillary or axially symmetric achromatic optic may achieve a <10 µm resolution in the future. The instrument is located at wiggler beamline 6-2 which has an energy range of 2.1–17 keV, creatingKemission for elements up to strontium, andLorMemission for all other elements. XAS can also be performed at selected sample positions within the same experiment, allowing for a more detailed chemical characterization of the elements of interest. Furthermore, sparse excitation energy XRF imaging can be performed over a wide range of incident X-ray energies. User friendliness has been emphasized in all stages of the experiment, including versatile sample mounts, He purged chambers for low-Zanalyses, and intuitive visualization hardware and software. The station provides analysis capabilities for a wide range of materials and research fields including biological, chemical, environmental and materials science, paleontology, geology and cultural heritage.

Research Organization:
SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES); USDOE Office of Science (SC), Biological and Environmental Research (BER); Petroleum Technology Development Fund (PTDF) (Nigeria); Engineering and Physical Sciences Research Council (EPSRC); Science and Technology Facilities Council (STFC) (United Kingdom); Southern California Earthquake Center (SCEC), Los Angeles, CA (United States); National Science Foundation (NSF); National Institutes of Health (NIH)
Grant/Contract Number:
AC02-76SF00515; P41GM103393; 16PhD153; ST/M001814/1
OSTI ID:
1476844
Alternate ID(s):
OSTI ID: 1476303
Journal Information:
Journal of Synchrotron Radiation (Online), Journal Name: Journal of Synchrotron Radiation (Online) Vol. 25 Journal Issue: 5; ISSN 1600-5775
Publisher:
International Union of CrystallographyCopyright Statement
Country of Publication:
Denmark
Language:
English
Citation Metrics:
Cited by: 15 works
Citation information provided by
Web of Science

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Figures / Tables (6)