Stanford Synchrotron Radiation Lightsource

The hard x-ray imaging station at BL 2-3 is a dedicated imaging facility which has the ability to perform a wide series of experiments, including x-ray fluorescence imaging, micro-spectroscopy (i.e. micro-XANES and micro-EXAFS), spectroscopic imaging (mapping an elemental distribution at several energies within the absorption edge of an element), micro-diffraction, and micro-tomography. The focused x-ray beam is acquired using Kirkpatrick-Baez (K-B) mirrors directly imaging the bending magnet source, and results in a beam size of approximately 2 x 2 microns and photon fluxes in the mid 108 photons/second in the focused spot with SPEAR current at 200mA. The energy range of the beam line optics at BL 2-3 covers from 5-23 keV, with detection of fluorescent x-rays as low as Si. Sample sizes are limited due to the travel range of the high-resolution sample positioner, which is 24 mm in the vertical and horizontal.