Japan Geoscience Union Meeting 2014

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Symbol M (Multidisciplinary and Interdisciplinary) » M-TT Technology & Techniques

[M-TT42_2AM1] Frontiers in Geochemistry : Innovative approaches for Earth and Planetary Sciences

Fri. May 2, 2014 9:00 AM - 10:50 AM 314 (3F)

Convener:*Yusuke Yokoyama(Atmosphere and Ocean Research Institute, University of Tokyo), Hiroyuki Kagi(Geochemical Laboratory, Graduate School of Science, University of Tokyo), Shogo Tachibana(Department of Natural History Scieces, Hokkaido University), Takafumi Hirata(Graduate School of Science, Kyoto University), Urumu Tsunogai(Graduate School of Environmental Studies, Nagoya University), Katsuhiko Suzuki(Institute for Research on Earth Evolution, Japan Agency for Marine-Earth Science and Technology), Gen Shimoda(Geological Survey of Japan, AIST), Hirochika Sumino(Geochemical Research Center, Graduate School of Science, University of Tokyo), Hajime Obata(Marine inorganic chemistry division, Atmosphere and Ocean Research Institute, University of Tokyo), Yoshio Takahashi(Department of Earth and Planetary Systems Science, Graduate School of Science, Hiroshima University), Tetsuya Yokoyama(Department of Earth and Planetary Sciences, Graduate School of Science and Engineering, Tokyo Institute of Technology), Chair:Yusuke Yokoyama(Atmosphere and Ocean Research Institute, University of Tokyo), Shogo Tachibana(Department of Natural History Scieces, Hokkaido University), Hiroyuki Kagi(Geochemical Laboratory, Graduate School of Science, University of Tokyo)

10:00 AM - 10:15 AM

[MTT42-05] High-Pressure Neutron Beamline PLANET for investigating "Water" in the Earth

*Takanori HATTORI1, Asami SANO1, Hiroshi ARIMA2, Toru INOUE3, Hiroyuki KAGI4, Takehiko YAGI3 (1.Japan Atomic Energy Agency, 2.Institute for materials research, Tohoku university, 3.Geodynamics Research Center, Ehime University, 4.Geochemical Laboratory, Graduate School of Science, University of Tokyo)

Keywords:neutron, high pressure, beamline, hydrous

The PLANET is the world's first neutron beamline specialized for high-pressure and high-temperature experiments. The most characteristic feature is the capability to investigate the state of water and hydrogen in minerals at high-pressure and high-temperatures up to 20GPa and 2000K with the multi-anvil high-pressure apparatus. The construction was started in 2008 and the experiments have been conducted since Nov. 2012. In this talk, the design and performance of the PLANET are introduced.PLANTET is designed so as to investigate structures not only of crystalline but also of amorphous (liquid) materials. The resolution of the diffraction pattern (Delta d/d=0.6%) was found to be almost equal to the designed value(0.5%). The elimination of the background from the sample surrounding materials, which is the most important issue in the high-pressure experiments, was found to be accomplished by using the severe incident and receiving collimators. With this development, PLANET offers very clear patterns even at high pressures. This character made the PLANET one of the most innovative beamlines among several high-pressure neutron beamlines in the world.