A simple opposed-anvil apparatus for high pressure and temperature experiments above 10 GPa |
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| Authors: | Hirotada Gotou Takehiko Yagi Taku Okada Riko Iizuka Takumi Kikegawa |
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| Institution: | 1. Institute for Solid State Physics , The University of Tokyo , Kashiwa, Chiba, 277-8581, Japan hgotou@issp.u-tokyo.ac.jp;3. Institute for Solid State Physics , The University of Tokyo , Kashiwa, Chiba, 277-8581, Japan;4. Institute for Solid State Physics , The University of Tokyo , Kashiwa, Chiba, 277-8581, Japan;5. Geochemical Research Center, Graduate School of Science , The University of Tokyo , Hongo, Bunkyouku, Tokyo, 113-0033, Japan;6. Institute of Materials Structure Science , High Energy Accelerator Research Organization , Tsukuba, 305-0801, Japan |
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| Abstract: | A new opposed-anvil high pressure and temperature apparatus was developed based on the Drickamer-type apparatus. Various improvements were made to increase the sample volume and to generate high pressure and temperature stably and easily. By optimizing components such as the anvil, heater, and gasket, large sample volumes of about 4?mm3 (～103 times more than that previously obtained with our previous apparatus) were achieved, with compact and light apparatus (outer diameter ? 40?mm; height 31?mm; weight 300?g). Pressures and temperatures up to about 15?GPa and 1700?K can routinely and stably be achieved by using this assembly. In order to extend the pressure range further, sintered diamond was used as an anvil material. As a result, pressures and temperatures of around 38?GPa and 1400?K were achieved, although the sample volume was decreased to about 1.3×10?1?mm3. |
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| Keywords: | Drickamer-type high pressure apparatus opposed-type high pressure apparatus large sample volume in-situ X-ray observation |
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