BL 2-3
Beam line 2-3 is dedicated to micro-focus hard x-ray imaging and micro x-ray absorption spectroscopy
Ideal for obtaining elemental maps of small samples (10 microns - 25 mm) as well as performing spectroscopy on selected points in the sample
Beam line specifications
Upstream
Source: 1.3 Tesla Bend Magnet, 0.75 mrad acceptance
Monochromator: Water cooled, double crystal Si(111)
Energy range: 4.9 - 23 keV focussed (please contact for experiments above 19 keV)
Resolution:
Experimental hutch
Beam size: 1 micron OR 5 micron ⌀ focused via cylindrical Kirkpatrick-Baez mirrors
Flux: ~10^9 photon/sec (see image)
Detector: Single element Hitachi Vortex 90EX, 50mm area
Detection system: Quantum Detectors Xspress3
Max count rate: 3 million counts per second
Practical element detection: SiK - NbK, most L-edges (concentration dependent)
Samples
Environment: Ambient temperature and pressure, biological cryo cell available on request
Sample mounting:
Primary mode is the "Wheel of Fortune"optimized for thin sections. Samples are mounted to cassettes that push fit into a wheel that can hold up to 6 cassettes (see gallery and CAD below).
2
Interactive CAD viewer
Tips:
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Click and drag to orbit.
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Hold shift, then click and drag to pan.
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Scroll (2 finger drag) for zoom.
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To hide or show components (such as the hutch walls) select the object, right click and select "Hide Selected".
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To show all components, right click and select "Show all objects".
Calibration Foils:
Purpose: These foils are available as concentration standards so you can obtain quantitive elemental distributions (see SMAK tutorial on quantification)
Standards & Concentrations: if you measured foils at the beamline, here is the key:
Row 1
Standard Concentration (ug/cm2)
Pb 46.1
Au 47.6
SrF 246.3
AgHg 42.5
WO 354
GdF 353.7
MoO 351.7
Row 2
Standard Concentration (ug/cm2)
CuSx 51.2 *(Individual concentrations given for Cu: 39.4 ug/cm2 and S: 11.8 ug/cm2)
Se 46.4
CaF2 56.8
ZnTe 45.8
Ni 55.4
Co 45
Mn 47.1
Fe 56
Row 3
Standard Concentration (ug/cm2)
GaAs 4.3
Cr 48.3
V 55.6
Ti 50.4
YP 348.2
SiO2 48.8
CsBr 50.5
Row 4
Standard Concentration (ug/cm2)
LaF 347.6
TiCl 39.7
ZrF 434.49
GaP 47
KCl 49.1