| Project/Area Number |
24710015
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Multi-year Fund |
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| Research Field |
Environmental dynamic analysis
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| Research Institution | Institute for Laser Technology |
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Principal Investigator |
SAKURAI Toshimitsu 公益財団法人レーザー技術総合研究所, レーザープロセス研究チーム, 研究員 (00581810)
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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 |
¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2013: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2012: ¥3,250,000 (Direct Cost: ¥2,500,000、Indirect Cost: ¥750,000)
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| Keywords | 氷コア / レーザー分光 / 不純物 / イオン / 水溶液 / 微生物 / 融氷雪 / レーザー融氷雪 / 塩微粒子 / レーザー応用 |
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| Research Abstract |
This project aimed to investigate impurities containing in polar ice cores using laser based advanced spectroscopic techniques.
(1) The orientation of water molecules and ion emission line spectra in solutions were measured using EERS and LIBS, respectively. Such studies are useful for detecting chemical elements and investigate chemical compositions of particles in ice. (2) LIFS using deep UV laser source was applied to identify microbes and organic matter from their fluorescence spectra without prior labeling. We could measure fluorescence spectra by the laser excitation and confirmed that un-labeled microbes and organic matter naturally existing in ice cores can be spectroscopically identified. (3) We have studied the melting properties of ice using IR laser sources. In IR wavelength region ice strongly absorbs and a hole is drilled along the path of the laser irradiation. This technique could be very useful for ice drilling and contamination free investigations of ice cores.
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