Influence of bias voltage and oxygen addition on the discharge aspects of a diffuse argon plume in an atmospheric pressure plasma jet  

作　　者：Pengying JIA Guoxin HAN Xiupin DONG Kaiyue WU Junxia RAN Xuexia PANG Xuexue ZHANG Jiacun WU Xuechen LI 贾鹏英;韩国新;董秀品;吴凯玥;冉俊霞;庞学霞;张雪雪;武珈存;李雪辰(College of Physics Science and Technology,Hebei University,Baoding 071002,People’s Republic of China;Engineering Research Center of Zero-carbon Energy Buildings and Measurement Techniques,Ministry of Education,Baoding 071002,People’s Republic of China;Department of Electrical Engineering,Tsinghua University,Beijing 100084,People’s Republic of China;Hebei Key Laboratory of Photo-Electricity Information and Materials,Hebei University,Baoding 071002,People’s Republic of China)

机构地区：[1]College of Physics Science and Technology,Hebei University,Baoding 071002,People’s Republic of China [2]Engineering Research Center of Zero-carbon Energy Buildings and Measurement Techniques,Ministry of Education,Baoding 071002,People’s Republic of China [3]Department of Electrical Engineering,Tsinghua University,Beijing 100084,People’s Republic of China [4]Hebei Key Laboratory of Photo-Electricity Information and Materials,Hebei University,Baoding 071002,People’s Republic of China

出　　处：《Plasma Science and Technology》2024年第12期75-81,共7页等离子体科学和技术（英文版）

基　　金：supported by National Natural Science Foundation of China(Nos.12375250,11875121,51977057 and 11805013);the Natural Science Foundation of Hebei Province(Nos.A2020201025 and A2022201036);Hebei Province Optoelectronic Information Materials Laboratory Performance Subsidy Fund Project(No.22567634H);Funds for Distinguished Young Scientists of Hebei Province(No.A2012201045);the Natural Science Interdisciplinary Research Program of Hebei University(Nos.DXK201908 and DXK202011);the Post-graduate’s Innovation Fund Project of Hebei University(No.HBU2022bs004)。

摘　　要：A remote plasma,also referred to as a plasma plume(diffuse or filamentary),is normally formed downstream of an atmospheric pressure plasma jet.In this study,a diffuse plume is formed by increasing the bias voltage(U_(b))applied to the downstream electrode of an argon plasma jet excited by a negatively pulsed voltage.The results indicate that the plume is filamentary when U_(b)is low,which transits to the diffuse plume with increasing U_(b).The discharge initiated at the rising edge of the pulsed voltage is attributed to the diffuse plume,while that at the falling edge contributes to the filament in the plume.For the diffuse plume,the discharge intensity decreases with the increasing oxygen content(C_o).Fast photography reveals that the diffuse plume results from a negative streamer,which has a dark region near the nozzle with C_o=0%.However,the dark region is absent with C_o=0.5%.From the optical emission spectrum,the electron density,electron excitation temperature,gas temperature,and oxygen atom concentration are investigated.

关 键 词：atmospheric pressure plasma jet diffuse plasma plume optical emission spectrum 

分 类 号：O53[理学—等离子体物理] O461[理学—物理]