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Development of density measurement for metals at high pressures and high temperatures using X-ray absorption imaging combined with externally heated diamond anvil cell |
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| Authors: | Yusaku Takubo Hidenori Terasaki Tadashi Kondo Shingo Mitai Seiji Kamada Takumi Kikegawa Akihiko Machida |
| Institution: | 1. Department of Earth and Space Science, Osaka University, Machikaneyama-cho 1-1, Toyonaka 560-0043, Japan;2. Frontier Research Institute for Interdisciplinary Sciences, Tohoku University, 6-3, Aoba, Aramaki, Aoba-ku, Sendai, 980-8578, Japan;3. Institute of Materials Structure Science, High Energy Accelerator Research Organization, KEK, 1-1 Oho, Tsukuba, Ibaraki, 305-0801, Japan;4. Synchrotron Radiation Research Center, National Institutes for Quantum and Radiological Science and Technology, 1-1-1 Kouto, Sayo-cho, Sayo-Gun, Hyogo, 679-5148, Japan |
| Abstract: | A technique for density measurement under high pressure and high temperature was developed using the X-ray absorption imaging method combined with an externally heated diamond anvil cell. The densities of solid and liquid In were measured in the pressure and temperature ranges of 3.2–18.6 GPa and 294–719 K. The densities obtained through the X-ray absorption imaging method were in good agreement (less than 2.0% difference) with those obtained through X-ray diffraction. Based on the measured density, the isothermal bulk modulus of solid In is determined as 48.0 ± 1.1?40.9 ± 0.8 GPa at 500 K, assuming K′ = 4 to 6. The compression curve of liquid In approaches that of solid In at higher pressures and does not cross over the solid compression curve in the measurement range. The present technique enables us to determine the densities of both solids and liquids precisely in a wide pressure and temperature range. |
| Keywords: | Corresponding author Density Liquid metal Indium High pressure |
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