2016 Fiscal Year Final Research Report
Spin mechanism of molecular-hydrogen formation
| Project/Area Number |
24246013
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| Research Category |
Grant-in-Aid for Scientific Research (A)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Thin film/Surface and interfacial physical properties
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| Research Institution | The University of Tokyo |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
笠井 秀明 大阪大学, 工学(系)研究科(研究院), 教授 (00177354)
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| Co-Investigator(Renkei-kenkyūsha) |
Wide Markus 東京大学, 生産技術研究所, 准教授 (10301136)
Ogura Shohei 東京大学, 生産技術研究所, 助教 (10396905)
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| Project Period (FY) |
2012-04-01 – 2016-03-31
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| Keywords | 表面 / 水素 / スピン |
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| Outline of Final Research Achievements |
We investigated the interaction of atomic and molecular hydrogen with solid surfaces in aimed at the spin mechanism in the scattering and reaction of hydrogen at surfaces by using the newly developed atomic and molecular hydrogen beams. The atomistic diffusion mechanism of hydrogen on Pd and TiO2 surfaces was clarified in detail. The thermal desorption spectrum revealed a clear difference in the desorption temperature for Ag and Pd surfaces between the nuclear-spin singlet and triplet states. On the basis of the first-order perturbation theory, the isotropic and anisotropic parts of the interaction potential were analyzed. The angular distribution of H2 in the nuclear-spin singlet and triplet states scattered from the SrTiO3(001) and TiO2(110) surfaces was state-selectively measured, which revealed a difference in the angular distribution as well as the total scattered intensity. The origin of these differences is theoretically analyzed on the basis of the potential anisotropy.
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| Free Research Field |
表面界面物性
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