Chinese Acad Sci, Inst High Energy Phys, Beijing Synchrotron Radiat Lab, Beijing 100039, Peoples R China
A collimation system was designed to reduce the scattering background in the energy-dispersive x-ray diffraction (EDXD) experiments at the high-pressure station of Beijing Synchrotron Radiation Facility. The results showed that the collimation system could improve the signal-to-noise ratio substantially. Some better data were obtained which were very difficult to access before in EDXD experiments. The system provides a useful technique for experimentation at pressure higher than 100 GPa.