Hydrogen Site Analyses of Dense Hydrous Mantle Minerals by Pulsed Neutron Powder Diffraction
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- OKUCHI Takuo
- Institute for Study of the Earth's Interior, Okayama University
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- TOMIOKA Naotaka
- Kochi Institute for Core Sample Research, Japan Agency for Marine-Earth Science and Technology
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- PUREVJAV Narangoo
- Institute for Study of the Earth's Interior, Okayama University
Bibliographic Information
- Other Title
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- パルス中性子粉末回折による地球マントル高密度含水相の水素配置解析
- パルス チュウセイシ フンマツ カイセツ ニ ヨル チキュウ マントル コウミツド ガンスイソウ ノ スイソ ハイチ カイセキ
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Abstract
Deuterium site positions and occupancies in the crystal structures of synthetic hydrous ringwoodite [γ-(Mg1.72Fe0.17D0.22)(Si0.97D0.12)O4] and dense hydrous magnesium silicate (DHMS) phase E [Mg2.28Si1.31O6D2.22] have been determined for the first time by high-resolution time-of-flight (TOF) neutron powder diffraction conducted at Japan Proton Accelerator Research Complex (J-PARC). These two minerals are the promised major careers of deep-mantle water. They were synthesized at pressures up to 19 GPa and at temperatures up to 1300℃ using a Kawai-type apparatus, for which we have newly designed two types of furnace assemblies to uniformly heat large masses of samples at these pressures (45 to 80 mg for each experimental run). The products were chemically uniform and free from any contamination of 1H. We successfully refined the structures of the two minerals to find the relations between their chemical bonding states and their physical properties.<br>
Journal
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- The Review of High Pressure Science and Technology
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The Review of High Pressure Science and Technology 26 (2), 140-148, 2016
The Japan Society of High Pressure Science and Technology
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Details 詳細情報について
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- CRID
- 1390282679357977216
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- NII Article ID
- 130005158545
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- NII Book ID
- AN10452913
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- ISSN
- 13481940
- 0917639X
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- NDL BIB ID
- 027513247
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- Text Lang
- ja
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- Data Source
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- JaLC
- NDL
- Crossref
- CiNii Articles
- KAKEN
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- Abstract License Flag
- Disallowed