| Project/Area Number |
24654181
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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| Allocation Type | Single-year Grants |
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| Research Field |
Geochemistry/Astrochemistry
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| Research Institution | Yokohama National University |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
TAKAYAMA Ken 大学共同利用機関法人高エネルギー加速器研究機構, 教授 (20163321)
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| Co-Investigator(Renkei-kenkyūsha) |
TAMURA Motohide 東京大学, 大学院理学系研究科, 教授 (00260018)
ADACHI Toshikazu 大学共同利用機関法人高エネルギー加速器研究機構, 教授 (80141977)
SHIBATA Hiromi 大阪大学, 産業科学研究所, 特任研究員(客員准教授) (30216014)
KANEKO Takeo 横浜国立大学, 大学院工学研究院, 特別研究 教員 (50191987)
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| Project Period (FY) |
2012-04-01 – 2014-03-31
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| Project Status |
Completed (Fiscal Year 2013)
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| Budget Amount *help |
¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000)
Fiscal Year 2013: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2012: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
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| Keywords | 星間塵アイスマントル / 宇宙線 / アミノ酸前駆体 / 生命の起源 / 核酸塩基 / デジタル加速器 / 軟Ｘ線 |
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| Research Abstract |
In order to examine possible formation of complex organic compounds in dense cloud environments, we irradiate mixtures of carbon monoxide, methanol, methane, ammonia, and/or water with high-energy particles (protons from a Tandem accelerator, or heavy ions from HIMAC, NIRS) to simulate the action of cosmic rays. When the simulated interstellar media mixture, complex amino acid precursors with high molecular weights were directly formed. Purines and pyrimidines including the five nucleic acid bases were also detected among the products. In order to study the formation of bioorganic compounds in ice mantles of interstellar dusts, a new irradiation system was designed and constructed. It was composed of a gas mixer, a cryostat chamber and analytical system including a quadrupole mass spectrometer. The ice will be irradiated with heavy ions from the Digital Accelerator in KEK, Japan.
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