| Budget Amount *help |
¥16,900,000 (Direct Cost: ¥13,000,000、Indirect Cost: ¥3,900,000)
Fiscal Year 2011: ¥3,250,000 (Direct Cost: ¥2,500,000、Indirect Cost: ¥750,000)
Fiscal Year 2010: ¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000)
Fiscal Year 2009: ¥9,880,000 (Direct Cost: ¥7,600,000、Indirect Cost: ¥2,280,000)
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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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