Diffusion dynamics of hydrogen molecules in clathrate hydrate
| Project/Area Number |
24740198
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Multi-year Fund |
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| Research Field |
Condensed matter physics I
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| Research Institution | The University of Tokyo |
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Principal Investigator |
KOFU Maiko 東京大学, 物性研究所, 助教 (70549568)
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| Project Period (FY) |
2012-04-01 – 2014-03-31
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| Project Status |
Completed (Fiscal Year 2013)
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| Budget Amount *help |
¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2013: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2012: ¥3,510,000 (Direct Cost: ¥2,700,000、Indirect Cost: ¥810,000)
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| Keywords | 水素 / 包接化合物 / 中性子散乱 / 拡散 / 国際研究者交流(米国) / 国際研究者交流(フランス) |
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| Research Abstract |
The relaxation dynamics of the H2 molecules in the clathrate hydrate has been investigated by using quasielastic neutron scattering (QENS) techniques. New type of samples cell were developed for high-pressure measurements. We have found that the H2 molecules move in the timescale of 10ps between 180K and 210K. By investigating how the relaxation changes with the scattering vector, it is made clear that the relaxation is of local origin. On the other hand, no relaxation was detected in the timescale between 0.1ns and 2ns at the temperature ranging from 5K to 260K. To understand what happens, we are now planning to investigate the relaxation of the H2 molecules between 10ps and 0.1ns. These measurements can reveal the motion of the H2 molecules in the clathrate hydrate.
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Report
(3 results)
Research Products
(10 results)
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[Presentation]2013
Author(s)
Maiko Kofu, Takuo Okuchi,Hannu Mutka, Jacques Ollivier, Craig Brown, Madhusudan Tyagi, Osamu Yamamuro
Organizer
International Conference on Neutron Scattering (ICNS2013)
Place of Presentation
Edingburgh (UK)
Year and Date
2013-07-10
Related Report
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