BL22XU High-pressure and high-temperature apparatus for monochromatic X-ray experiments
問い合わせ番号
INS-0000000329
High-pressure and high-temperature apparatus for monochromatic X-ray experiments
To study structure and properties of matter under high-temperature and high-pressure conditions, a cubic-type multi-anvil apparatus, SMAP-180 (SPring-8 Multi-Anvil Press with maximum load of 180 ton), is installed. This press is capable to generate pressures up to 10 GPa and temperatures up to 2000 K. With this press, angle-dispersive X-ray diffraction (ADX) measurements and density measurements by means of X-ray absorption are possible. The ADX method has the advantage of accuracy in intesity and resolution over energy-dispersive X-ray diffraction method, which is commonly used for multi-anvil presses. In the ADX, diffraction pattern is collected using a flat-panel detector. Thanks to the intense, high-energy monochromatic X-rays up to 70 keV, precise X-ray diffraction measurements in a wide Q range are possible. The high-energy X-rays will also allow us to study heavy elements. For absorption measurements, two ionization chambers are used. An attachment is available for in-situ and/or time-resolved observation of hydrogenation processes at room temperature and hydrogen gas pressures of up to 1 MPa by the ADX method.
Fig. 1 High-pressure and high-temperature apparatus for monochromatic X-ray experiments