Abstract

Synchrotron Radiation X-ray (SR) with high brightness, small divergence and continuous energy spectrum is quite prospective for X-ray experiments under pressure. High pressure studies have been performed at SSRL, CHESS, DESY and Photon Factory. Application of SR to high pressure works reveals that accuracy in determination of lattice constants becomes 10 times better than before, phase transition can be dynamically observed by time resolved measurement and measurement at temperature region higher than 1700°C can be done. Furthermore, EXAFS and XANES are measured under pressure for the first time with the aid of SR. These results are briefly introduced.

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