2015 Fiscal Year Final Research Report
Study of Protosolar activities recorded in meteorites
| Project/Area Number |
25247090
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| Research Category |
Grant-in-Aid for Scientific Research (A)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Geochemistry/Cosmochemistry
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| Research Institution | Hokkaido University |
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Principal Investigator |
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| Project Period (FY) |
2013-04-01 – 2016-03-31
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| Keywords | 地球化学 / 宇宙科学 / 惑星起源・進化 / 天文学 / 分析化学 |
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| Outline of Final Research Achievements |
Activities of protosun is believed to be much higher than the case of present sun and the activities would much contributed to the early solar system evolution, but the protosolar activity have not been well understand quantitatively. In order to study the protosolar activities, we have established microanalysis method for solar wind He in micro areas on materials using strong-field ionization of sputtered particles. We determined solar wind He distribution of a solar wind irradiated sample of NASA Genesis mission by the new method. We also determined quantitative 3-D distributions of solar wind He of asteroid Itokawa particles returned by JAXA Hayabusa mission. We have tried to detect solar wind He from gas-rich chondrites, but have not been detected probably because of lower concentration of the He. More development of the analysis method is required.
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| Free Research Field |
数物系科学
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