Study of the "Missing xenon" problem based on high pressure and high temperature experiments
| Project/Area Number |
22540430
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Solid earth and planetary physics
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| Research Institution | Ehime University (2012)
The University of Tokyo (2010-2011) |
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Principal Investigator |
YAGI Takehiko 愛媛大学, 地球深部ダイナミクス研究センター, 特命教授 (20126189)
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| Co-Investigator(Kenkyū-buntansha) |
OKAD Taku 東京大学, 物性研究所, 助教 (90343938)
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| Co-Investigator(Renkei-kenkyūsha) |
HAMANE Daisuke 東京大学, 物性研究所, 技術職員 (20579073)
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| Project Period (FY) |
2010 – 2012
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| Project Status |
Completed (Fiscal Year 2012)
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| Budget Amount *help |
¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2012: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2011: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2010: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
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| Keywords | キセノン / コア / 鉄 / 超高圧 / 金属化 / 欠損 |
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| Research Abstract |
In this study we have tried to clarify weather or not xenon reacts with iron and forms new compounds or solid solution under very high-pressure and high-temperature conditions corresponding to that of the lower mantle. After making various improvements of the experimental techniques, we have succeeded to make precise X-ray diffraction study of xenon and iron, which were loaded at low temperature and room pressure, under 155 GPa and several thousands kelvin. It was clarified that even under such extreme condition corresponding to that of the core, no reaction occurs between xenon and iron. As a result, neither any new compounds nor any solid solutions were formed. This result suggests that it is unlikely that the “Missing xenon” is existing in the core. We have to think of some other idea to explain the Missing xenon.
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Report
(4 results)
Research Products
(36 results)
