Ignition dynamics of radio frequency discharge in atmospheric pressure cascade glow discharge  

作　　者：张亚容 韩乾翰 方骏林 郭颖 石建军 Ya-Rong Zhang;Qian-Han Han;Jun-Lin Fang;Ying Guo;Jian-Jun Shi(College of Science,Donghua University,Shanghai 201620,China;Textile Key Laboratory for Advanced Plasma Technology and Application,Donghua University,Shanghai 201620,China)

机构地区：[1]College of Science,Donghua University,Shanghai 201620,China [2]Textile Key Laboratory for Advanced Plasma Technology and Application,Donghua University,Shanghai 201620,China

出　　处：《Chinese Physics B》2023年第2期354-357,共4页中国物理B（英文版）

基　　金：supported by the National Natural Science Foundation of China (Grant Nos. 11875104 and 12175036)。

摘　　要：A cascade glow discharge in atmospheric helium was excited by a microsecond voltage pulse and a pulse-modulated radio frequency(RF) voltage, in which the discharge ignition dynamics of the RF discharge burst was investigated experimentally. The spatio-temporal evolution of the discharge, the ignition time and optical emission intensities of plasma species of the RF discharge burst were investigated under different time intervals between the pulsed voltage and RF voltage in the experiment. The results show that by increasing the time interval between the pulsed discharge and RF discharge burst from 5 μs to 20 μs, the ignition time of the RF discharge burst is increased from 1.6 μs to 2.0 μs, and the discharge spatial profile of RF discharge in the ignition phase changes from a double-hump shape to a bell-shape. The light emission intensity at 706 nm and 777 nm at different time intervals indicates that the RF discharge burst ignition of the depends on the number of residual plasma species generated in the pulsed discharges.

关 键 词：pulsed voltage modulated radio frequency radio frequency(RF)discharge burst residual plasma species 

分 类 号：O461.21[理学—电子物理学]