| Budget Amount *help |
¥17,290,000 (Direct Cost: ¥13,300,000、Indirect Cost: ¥3,990,000)
Fiscal Year 2021: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2020: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2019: ¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2018: ¥10,140,000 (Direct Cost: ¥7,800,000、Indirect Cost: ¥2,340,000)
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| Outline of Final Research Achievements |
Cubic ice (ice Ic) is one of the most important ice polymorphs that is likely to exist universally in space. However, the ice Ic discovered so far always contains stacking disorder, leaving much unknown about its structure and physical properties. In this study, the world's first successful synthesis of ice Ic without stacking disorder was achieved by extracting hydrogen from hydrogen hydrate (C2), which has the same water molecule framework as ice Ic. We also succeeded for the first time in the world in measuring the neutron diffraction pattern of C2 under high pressure and analysing its crystal structure.
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