2011 Fiscal Year Final Research Report
Investigation of pressure response of hydrogen bond in distorted Rutile type hydrous phase
| Project/Area Number |
22740349
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Single-year Grants |
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| Research Field |
Petrology/Mineralogy/Science of ore deposit
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| Research Institution | Japan Atomic Energy Agency |
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Principal Investigator |
SANO Asami 独立行政法人日本原子力研究開発機構, 量子ビーム応用研究部門, 研究員 (30547104)
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| Project Period (FY) |
2010 – 2011
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| Keywords | 鉱物物理 / 高圧 / 中性子散乱 / 含水鉱物 / 同位体効果 / 水素結合 |
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| Research Abstract |
d-AlOOH, distorted rutile type oxyhydroxide is an important hydrous mineral in the deep earth that is stable at the lower mantle condition. Theoretical studies have pointed out that hydrogen would locate at the center between two oxygen atoms at high pressure, which is so called symmetrization of the hydrogen bond. To investigate D/H isotope effect in the pressure response of strong hydrogen bond in δ-AlOOH, Neutron diffraction experiment was conducted. Strong D/H isotope effect was found in hydrogen bond geometry. The result indicate there is two stage to the symmetrization.
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