| Budget Amount *help |
¥18,200,000 (Direct Cost: ¥14,000,000、Indirect Cost: ¥4,200,000)
Fiscal Year 2013: ¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
Fiscal Year 2012: ¥6,240,000 (Direct Cost: ¥4,800,000、Indirect Cost: ¥1,440,000)
Fiscal Year 2011: ¥8,970,000 (Direct Cost: ¥6,900,000、Indirect Cost: ¥2,070,000)
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| Outline of Final Research Achievements |
Chemcial bonding state and microscopic dynamics of hydrogen in minerals, ices and gas hydrates at high pressure are important problems in earth and planetary material sciences. Diamond anvil cell nuclear magnetic resonance spectroscopy is an unique probe to determine microscopic structure and dynamics of hydrogenous materials confined at high pressures. Here we successfully applied this technique to observe hydrogen's dynamics in hydrogen hydrate and in fluid hydogen in situ at high pressures to 5 GPa. In addition to this achievement, we have also determined hydrogen diffusion coefficients in brucite at high pressure and temperature conditions. We also newly developed a technique to observe neutron diffraction of methane hydrate at a few gigapascals of pressures.
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