2013 Fiscal Year Final Research Report
Optimization of laser plasma for in situ underwater surface elemental analysis
| Project/Area Number |
23560023
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Thin film/Surface and interfacial physical properties
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| Research Institution | Kyoto University |
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Principal Investigator |
SAKKA Tetsuo 京都大学, 工学(系)研究科(研究院), 教授 (10196206)
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| Co-Investigator(Renkei-kenkyūsha) |
FUKAMI Kazuhiro 京都大学, 大学院工学研究科, 准教授 (60452322)
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| Project Period (FY) |
2011 – 2013
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| Keywords | レーザープラズマ / 水中プラズマ / レーザー誘起ブレークダウン分光法 / キャビテーションバブル / 発光分光 |
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| Research Abstract |
For in situ elemental analysis of solid materials submerged in water by the emission spectroscopy of the plasma generated by the pulsed laser irradiation of the solid surface in water, it is difficult to obtain stably well-defined atomic emission lines. In the present study we focused on the effects of the temporal profile of the irradiation laser upon the behavior of the plasma and the cavitation bubble, and tried to obtain clearer atomic emission lines by optimizing the irradiation conditions as well as the detection techniques for the emission spectra. Also, we tried to clarify the reason why such conditions give clear atomic emission lines from the point of view of the plasma formation mechanism.
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