Stanford Synchrotron Radiation Lightsource

Beam Line 11-2 is a high-flux XAS station dedicated to molecular biogeochemical and interface sciences. It is optimized for challenging XAS measurements on dilute or radioactive samples, single crystals, and interfaces. To support these experiments, Beam Line 11-2 is equipped with collimating and focusing optics, a "double double" Si(220) LN-cooled monochromator, and a 30-element solid state Ge detector array. Additional instrumentation includes LHe and LN cryostats, a grazing incidence XAS spectrometer, and HEPA-filtered controlled exhaust systems that are continuously monitored to detect the presence of air-born radioactivity. It has an adjacent sample preparation room for handling and temporary storage of radioactive samples, most of which are related to the DOE's energy and national security missions.