The ASTRA beamline is intended for fundamental and applied research in:<\/p>\r\n\r\n

materials science, physics and chemistry (investigation of functional materials, esp. alloys, oxidic systems and catalysts, coatings, adhesives, etc.)
\r\nbiomedicine (investigation of metalloproteins, investigation of the stability, uptake and therapeutic mechanism of action of inorganic and bio-inorganic drugs, etc.)
\r\nenvironmental protection (e.g., speciation of toxic elements during bioaccumulation).
\r\nThe ASTRA beamline was especially designed for XANES\\\/EXAFS measurements in the tender X-ray range, i.e., at the K absorption edges of important elements such as P, S, Si, Al <\\\/strong>and Mg<\\\/strong>. Besides, ASTRA` energy range also includes K-edges of heavier elements up to Se, L-edges<\\\/strong> of elements up to Bi<\\\/strong> and some M-edges of elements including , which allows investigation of a variety of highly relevant materials.<\/p>\r\n\r\n

The beamline is built by the project leader Hochschule Niederrhein University of Applied Sciences  (Germany) in collaboration with the Synchrotron Light Research Institute (Thailand), the Physics Institute of Bonn University and National Synchrotron Radiation Centre SOLARIS Jagiellonian University.<\/p>\r\n\r\n

Beamline parameters:<\/p>\r\n\r\n

Bending magnet (1.31 T)<\/p>\r\n\r\n

Target energy range: 1 – 15 keV<\/p>\r\n\r\n

Available energy range: 1.8 – 12.0 keV<\/p>\r\n\r\n

Energy resolution: InSb(111): 7 × 10-4 (at sulfur K edge – 2.472 keV) data for other crystals and for other edges will be completed in near future<\/p>\r\n\r\n

Beam size at sample (max.) (H × V) 10 mm × 1 mm<\/p>\r\n\r\n

Photon flux at sample:<\\\/em> 109<\\\/sup>-1010 [ph\\\/s\\\/0.1 A]<\/p>\r\n\r\n

Polaryzation:Linear (horizontal)<\/p>\r\n\r\n

End station: ASTRA (X-ray absorption spectroscopy chamber)
\r\nCurrently available
\r\nResearch techniques: XANES\\\/EXAFS
\r\nDetection methods: Transmission
\r\nTemperature conditions: Room temperature
\r\nPressure: Low vacuum or atmospheric pressure
\r\nGas conditions: Presence of the selected gases (He, Ar, O2, N2, CO2)<\/p>\r\n\r\n

Under development (not available in current Call)
\r\nResearch techniques: XRF, high-resolution X-ray emission spectroscopy
\r\nDetection methods: Fluorescence, Total Electron Yield 
\r\nTemperature conditions: 5 - 1000 K
\r\nPressure: High Vacuum, high pressure
\r\nGas conditions: Controllable flow of gas of interest<\/p>\r\n\r\n

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