SPring-8 Users Community (SPRUC)

Research Group:

Earth and Planetary Science Group

  Kenji Ohta
  Department of Earth and Planetary Sciences, Tokyo Institute of Technology
2-12-1 Ookayama, Meguro, Tokyo 152-8550, Japan
  Telephone: +81-3-5734-2590
  k-ohta (at) geo.titech.ac.jp

Research Area:

Fundamental Characterization


BL04B1, BL10XU, BL35XU, BL22XU, BL20B2 etc.

Overview of Research Group, Goals and Purposes:

Extensive studies on physical properties of materials in the deep Earth and planets have been done at SPring-8 utilizing high-pressure apparatuses such as a multi-anvil press and a diamond-anvil cell. Important results have also been reported from studies on extraterrestrial materials (meteorites, cosmic dusts, asteroid samples returned by the Hayabusa explorer). In these studies, samples under high-pressure and high-temperature or very small-scale samples have been analyzed based on X-ray diffraction, imaging and fluorescence measurements. Recently, application of new analytical techniques, such as X-ray Raman scattering, inelastic scattering, emission spectroscopy, Mössbauer spectroscopy, have provided us new information about physical properties of the Earth and planetary materials under the extreme conditions. Therefore, synchrotron X-ray at SPring-8 is the necessary tool on the cutting edge of the recent Earth and planetary sciences.

Based on the present circumstances described above, objectives of the "Earth and planetary science group" are the following.

  1. To promote the discussion of the latest scientific results and related synchrotron techniques for current and potential SPring-8 users in the field of the Earth and planetary sciences.
  2. To promote the discussion about the future vision of Earth and planetary sciences using SPring-8 synchrotron, including technical requirements to related beam lines, and to organize a working group to investigate new sciences and techniques toward the next generation SPring-8.
  3. To introduce new experimental systems and software for the potential users in the Earth and planetary science field, and to inform the status of related experimental equipments.