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Beam line 2-3 is a bending magnet side station dedicated to x-ray imaging and micro x-ray absorption spectroscopy (edge, EXAFS) as well as micro diffraction of biological, material, and geological samples. A Kirkpatrick-Baez mirrors system is used to achieve microfocus with a beam size of ~ 2 x 2 microns. The energy range of the beam line optics covers 4.9-23 keV, with detection of fluorescent x-rays as low as Si. BL2-3 is equipped with a Vortex silicon drift detector and ionization chambers. Sample positions are controlled with submicron accuracy by two different sample stages depending on the experiment. BL2-3 is ideal for obtaining elemental maps of small samples (about 10 microns to 25 mm) as well as performing spectroscopy on selected points in the sample (~ 2 x 2 microns).
X-ray absorption spectroscopy imaging
|Main Scientific Disciplines||
|Beam Line Specifications|
1.3 Tesla Bend Magnet, 0.75 mrad acceptance
Kirkpatrick-Baez System (microfocus) Monochromator: water cooled, double crystal, Si(111), Si(220), Si(400).
Crystal changes need to be scheduled and coordinated in advance with BL support staff.
584 microns Be, 10.7 meters He, 15.2 microns C
Detectors: ionization chambers, Vortex Silicon Drift Detector, CCD detector for µXRD
Sample Positioning: Newport Micro sample positioner, SmarAct Piezo positioner for tomographysample positioner
Ambient temperature and pressure
Sample size: flexible, ~24 X 24 mm in one image, also accommodates larger samples
|Data Acquisition and Analysis|
|Beam Line Phone||
650-926-5223. On-site Users: Contact the Duty Operator at 9-926-4040
|Beam Line Contact|
Content Owner: Ritimukta Sarangi | Last updated: 04/21/2017