| Project/Area Number |
63044044
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| Research Category |
Grant-in-Aid for Overseas Scientific Survey.
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| Allocation Type | Single-year Grants |
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| Section | Joint Research |
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| Research Institution | Tokyo Institute of Technology |
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Principal Investigator |
OKADA Isao Professor, Tokyo Institute of Technology, 総合理工学研究科, 教授 (60011582)
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| Co-Investigator(Kenkyū-buntansha) |
ASHOK Kumar ブリストル大学, 物理学科, 助手
GEORGE Walte ブリストル大学, 物理学科, 助教授
OKAZAKI Susumu Research Associate, Tokyo Institute of Technology, 総合理工学研究科, 助手 (70194339)
YAMAGUCHI Toshio Associate Professor, Fukuoka University, 理学部, 助教授 (70158111)
ODAWARA Osamu Associate Professor, Tokyo Institute of Technology, 総合理工学研究科, 助教授 (90185611)
NEILSON George Walter Associate Professor, Bristol University
ADYA Ashok Kumar Research Associate, Bristol University
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| Project Period (FY) |
1988 – 1989
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| Project Status |
Completed (Fiscal Year 1989)
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| Budget Amount *help |
¥3,800,000 (Direct Cost: ¥3,800,000)
Fiscal Year 1989: ¥1,900,000 (Direct Cost: ¥1,900,000)
Fiscal Year 1988: ¥1,900,000 (Direct Cost: ¥1,900,000)
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| Keywords | Neutron diffraction / Isotropic substitution / Molecular dynamics simulation / Molten salt / Hydroxide / Carbonate / Nitrate |
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| Research Abstract |
The purpose of the present project was to investigate structures of molten salts by neutron diffraction measurement and molecular dymanics simulation. The following items have been elucidated.
1. A nickel metal cell has been developed for neutron diffraction measurement of highly corrosive molten salts. Large scattering intensities by the nickel metal cell could be satisfactorily subtracted from the observed total intensities. 2. Neutron diffraction measurements have been performed successfully for alkali hydroxides(LiOD, NaOD, and KOD) using nickel metal cell. The structure factors and their Fourier trnsformations reveal that the polyatomic ion can possess an effective ionic radius. The cell was also applied to molten carbonate. 3. Molecular dynamics simulation for molten lithium hydroxide elucidated anisotropic coordination structures of Li^+ and OH^- ions around an OH^- ion and three dimensional framework structures of the melt. 4. The isotropic substitution method has been applied to molten ammonium nitrate and lithium nitrate.
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