| Project/Area Number |
25247086
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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 |
Petrology/Mineralogy/Economic geology
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| Research Institution | Hokkaido University |
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Principal Investigator |
Kouchi Akira 北海道大学, 低温科学研究所, 教授 (60161866)
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| Co-Investigator(Kenkyū-buntansha) |
HIDAKA Hiroshi 北海道大学, 低温科学研究所, 助教 (00400010)
OBA Yasuhiro 北海道大学, 低温科学研究所, 助教 (00507535)
HAMA Tetsuya 北海道大学, 低温科学研究所, 助教 (20579172)
CHIGAI Takeshi 北海道大学, 低温科学研究所, 技術専門職員 (60601309)
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| Co-Investigator(Renkei-kenkyūsha) |
WATANABE Naoki 北海道大学, 低温科学研究所, 教授 (50271531)
KIMURA Yuki 北海道大学, 低温科学研究所, 准教授 (50449542)
TOMARU Takayuki 大学共同利用機関法人高エネルギー加速器研究機構, 超伝導低温工学センター, 准教授 (80391712)
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| Project Period (FY) |
2013-10-21 – 2016-03-31
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| Project Status |
Completed (Fiscal Year 2015)
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| Budget Amount *help |
¥40,690,000 (Direct Cost: ¥31,300,000、Indirect Cost: ¥9,390,000)
Fiscal Year 2015: ¥9,100,000 (Direct Cost: ¥7,000,000、Indirect Cost: ¥2,100,000)
Fiscal Year 2014: ¥9,100,000 (Direct Cost: ¥7,000,000、Indirect Cost: ¥2,100,000)
Fiscal Year 2013: ¥22,490,000 (Direct Cost: ¥17,300,000、Indirect Cost: ¥5,190,000)
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| Keywords | 超高真空極低温透過型電子顕微鏡 / アモルファス氷 / 氷結晶 / 紫外線照射 / 氷XI / マトリックス昇華法 / 高密度アモルファス氷 / 超高真空透過型電子顕微鏡 / マトリクス昇華法 / 結晶成長 / 電子顕微鏡 / メゾスコピック系 / 冷凍機 |
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| Outline of Final Research Achievements |
An ultrahigh vacuum (UHV) transmission electron microscope for in-situ observation of ice has been developed. We use a single tilt liquid He cooling holder for specimen cooling to 4 K. Two ports are directed to the specimen surface for in-situ studies: gas-inlet, and UV irradiation.
Results of preliminary observation are as follows: (1) Macroscopic defect structure of vapor-deposited amorphous ice are observed at first time. (2) Formation of ice XI by UV irradiation onto ices Ih and Ic are observed at 75-100 K. On the other hand, no structural change has been observed by UV irradiation onto amorphous ice. (3) Formation of high-density amorphous ice by CO matrix sublimation method has been developed.
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