2011 Fiscal Year Final Research Report
Determination of Excitation Transfer rates in an Atmospheric Plasma by Pico-second Laser Excitation and their Application to Plasma Diagnostics
| Project/Area Number |
21340170
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Plasma science
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| Research Institution | Kyoto University |
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Principal Investigator |
HASUO Masahiro 京都大学, 大学院・工学研究科, 教授 (40218433)
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| Co-Investigator(Renkei-kenkyūsha) |
SHIKAMA Taiichi 京都大学, 工学研究科, 講師 (80456152)
GOTO Motoshi 核融合科学研究所, 高温プラズマ物理研究系, 准教授 (00290916)
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| Project Period (FY) |
2008 – 2011
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| Keywords | プラズマ計測 |
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| Research Abstract |
We developed a laser-induced fluorescence spectroscopy system with 620 ps pulse width and measured temporal developments of the fluorescence intensities for glow and micro-hollow cathode helium plasmas. We compared the measured results with the analysis using excitation transfer and quenching rate coefficients determined at low pressures, and found discrepancy between them. We also developed a multi-wavelength high-resolution spectrometer for helium atom 587. 6, 667. 8, and 706. 5 nm emission lines, and estimated the atom density, electron density and temperature from the observed spectra for micro-hollow cathode helium plasmas up to 1 atm.
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