N₂ガス直流グロー放電プラズマの精密な振動温度の分光学的診断法とその適用

抄録

More accurate measurement of the vibrational temperature for a DC-glow discharge plasma with N₂ gas has been attempted using the spectroscopic diagnostics. The vibrational temperatures were determined from vibrational intensity distributions of the second positive system bands (the C³Πu→B³∏g emissions, Δv=-2) in N₂ spectra. These vibrational distribution of the spectrum system have also been adjusted in the present calculations so as to fit experimental spectral intensity and theoretical spectral intensity which depend on rotational temperature and gas pressure. From this diagnosis, the errors associated with the measured vibrational temperature are estimated to be of the order of 6%. However, the present developed diagnosis has also been applied to measure the vibrational temperatures of a negative glow region with the discharge current density on DC-glow discharge plasma in N₂ gas.