Construction of laser-heated diamond anvil cell system for in situ x-ray diffraction study at SPring-8

A double-sided laser heated diamond anvil cell (DAC) system was constructed at a high brilliance, undulator beamline (BL10XU) at SPring-8 a third gene ration synchrotron radiation facility, for performing in situ angle-dispers ive x-ray diffraction experiments under high temperature and high pressure. The design of this system puts emphasis on reliable data collection for th e structural analysis. With this system, the adjustment of the optical syst ems for both x-ray and laser beams can be done easily, and high quality dif fraction data can be obtained typically within several minutes. A system fo r temperature measurement of ten points in a sample area at the same time w as also developed. The performance of the laser heated DAC system was teste d by observing phase transitions of natural olivine. (C) 2001 American Inst itute of Physics.