Japan Geoscience Union Meeting 2022

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[E] Poster

S (Solid Earth Sciences ) » S-IT Science of the Earth's Interior & Techtonophysics

[S-IT19] Deep Earth Sciences

Mon. May 30, 2022 11:00 AM - 1:00 PM Online Poster Zoom Room (22) (Ch.22)

convener:Kenji Ohta(Department of Earth and Planetary Sciences, Tokyo Institute of Technology), convener:Kenji Kawai(Department of Earth and Planetary Science, School of Science, University of Tokyo), Tsuyoshi Iizuka(University of Tokyo), convener:Jun Tsuchiya(Geodynamics Research Center, Ehime University), Chairperson:Kenji Ohta(Department of Earth and Planetary Sciences, Tokyo Institute of Technology), Jun Tsuchiya(Geodynamics Research Center, Ehime University), Tsuyoshi Iizuka(University of Tokyo), Kenji Kawai(Department of Earth and Planetary Science, School of Science, University of Tokyo)

11:00 AM - 1:00 PM

[SIT19-P04] Development of GHz Ultrasonic Velocity Measurement in Diamond Anvil Cell: Ⅳ

*Takuto Kato1, Ryo Tsuruoka1, Hidenori Terasaki2, Tadashi Kondo1, Daisuke Yamazaki3, Akira Yoneda1 (1.Department of Earth and Space Science, Graduate School of Science Osaka University, 2.Faculty of Science, Okayama University, 3.Institute for Planetary Materials, Okayama University)

Keywords:GHz ultrasonic velocity measurement, DAC, elastic velocity

GHz ultrasonic velocity measurement enables us to measure elastic wave velocities of samples with ~10μm thickness compressed in diamond anvil cell (DAC). Comparing with Brillouin scattering and picosecond ultrasonic, it is the unique technique to measure both P wave and S wave velocities of opaque samples such as iron and its relating materials.
We are conducting measurement of iron samples using the GHz-DAC method. Simultaneously, we are developing the technique towards higher pressure, higher temperature, and higher precision. In the presentation, we would introduce the progress of the GHz method recently achieved and high-temperature GHz method using external heating DAC.