Influence of Pressure and Discharge Voltage on Spectral Intensities in a Pulsed Nitrogen Discharge Supersonic Free-Jet  

作　　者：吴其俊 祖莉莉 方维海 

机构地区：[1]Department of Chemistry,Beijing Normal University [2]Department of Chemistry,Bijie University

出　　处：《Plasma Science and Technology》2010年第3期320-324,共5页等离子体科学和技术（英文版）

基　　金：supported by National Natural Science Foundation of China (No.20673013);Major State Basic Research Development Program of China (No.2007CB815206)

摘　　要：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 flee-jet. The results show that a stabilized discharge condition was reached when the vacuum chamber pressure increased to 100 Pa. Both N2（C^3∏u） and N＋（B^2∑u^＋） states were highly populated at a pressure of 100 Pa to 130 Pa. The active state N2（C^3∏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（C^3∏u） and N＋（B^2∑u^＋） states were proposed to account for the experimental results.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 flee-jet. The results show that a stabilized discharge condition was reached when the vacuum chamber pressure increased to 100 Pa. Both N2（C^3∏u） and N＋（B^2∑u^＋） states were highly populated at a pressure of 100 Pa to 130 Pa. The active state N2（C^3∏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（C^3∏u） and N＋（B^2∑u^＋） states were proposed to account for the experimental results.

关 键 词：spectral intensities pulsed discharge active state NITROGEN 

分 类 号：O358[理学—流体力学]