2012 Fiscal Year Final Research Report
Nanoscale inhomogeneity of Earth's constituent materials studied by in-situ small angle X-ray scattering under high pressure
| Project/Area Number |
23654156
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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| Allocation Type | Multi-year Fund |
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| Research Field |
Solid earth and planetary physics
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| Research Institution | The University of Tokyo |
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Principal Investigator |
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| Project Period (FY) |
2011 – 2012
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| Keywords | 超高圧実験 / 放射光 X 実験 / その場小角散乱 / シリカガラス / フュームドシリカ / メソポーラスシリカ / 粒界 / 空孔 |
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| Research Abstract |
We have developed techniques for in-situ small-angle X-ray scattering measurement under high pressure. It is now possible to collect data for small samples in a diamond-anvil cell at a Q-range approximately from 0.1 to 2.0 nm-1. Three types of noncrystalline SiO2 have been measured so far with the new techniques and the following interesting results have been obtained; (1) the density difference between grains and grain boundaries did not completely diminish even at the highest pressure in experiments for silica glass and fumed silica up to 50 GPa and (2) the size of pores enlarged with increasing pressure in experiments for mesoporous silica up to 20 GPa.
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[Presentation] ルチル型高圧相中のミュオニウム2012
Author(s)
船守展正(招待),小嶋健児,若林大佑,佐藤友子,谷口尚,西山宣正,入舩徹男,飯塚毅,友野大,松崎禎市郎,宮崎正範,平石雅俊,幸田章宏,門野良典
Organizer
第4回MLFシンポジウム
Place of Presentation
日本科学未来館(東京都)
Year and Date
20121010-11
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