Influence of Pressure and Discharge Voltage on Spectral Intensities in a Pulsed Nitrogen Discharge Supersonic Free-Jet
The effects of the pressure and discharge voltage on the spectral intensities of the second positive and first negative systems were studied in a pulsed nitrogen discharge supersonic free-jet. The results show that a stabilized discharge condition was reached when the vacuum chamber pressure increased to 100 Pa. Both N2(C3∏u) and N2+(B2∑u+) states were highly populated at a pressure of 100 Pa to 130 Pa. The active state N2(C3∏u)could be selectively populated at a low pressure of 10 Pa and a discharge voltage of 4500 V. Different populating mechanisms under the experimental conditions for N2(C3∏u) and N2+(B2∑u+) states were proposed to account for the experimental results.
spectral intensities pulsed discharge active state nitrogen
WU Qijun ZU Lili FANG Weihai
Department of Chemistry, Beijing Normal University, Beijing 100875, China Department of Chemistry, B Department of Chemistry, Beijing Normal University, Beijing 100875, China
国际会议
西安
英文
320-324
2009-10-26（万方平台首次上网日期，不代表论文的发表时间）