The investigation of OH radicals produced in a DC glow discharge by laser-induced fluorescence spectrometry

作     者：Feng LIU Yue ZHUANG Haijing CHU Zhi FANG Wenchun WANG 刘峰;庄越;储海靖;方志;王文春

作者机构：College of Electrical Engineering and Control ScienceNanjing Tech UniversityNanjing 211816People's Republic of China Key Lab of Materials ModificationDalian University of TechnologyMinistry of EducationDalian 116024People's Republic of China School of Physics and Optoelectronic TechnologyDalian University of TechnologyDalian 116024People's Republic of China 

出 版 物：《Plasma Science and Technology》 (等离子体科学和技术（英文版）)

年 卷 期：2021年第23卷第6期

页      面：12-20页

核心收录：

学科分类：080901[工学-物理电子学] 081704[工学-应用化学] 0809[工学-电子科学与技术（可授工学、理学学位）] 07[理学] 08[工学] 0817[工学-化学工程与技术] 070302[理学-分析化学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0703[理学-化学] 0702[理学-物理学] 

基　　金：supported by National Natural Science Foundation of China(No.51777091) Innovative Talents Team Project of‘Six Talent Peaks’of Jiangsu Province(No.TDJNHB-006) Postgraduate Research&Practice Innovation Program of Jiangsu Province in China(No.SJCX20_0345) 

主　　题：laser-induced fluorescence OH radicals rotational temperature water vapor 

摘      要：In this paper the OH radicals produced by a needle-plate negative DC discharge in water vapor,N_(2)+H_(2)O mixture gas and He+H_(2)O mixture gas are investigated by a laser-induced fluorescence(LIF)*** a ballast resistor in the circuit,the discharge current is limited and the discharges remain in *** OH rotation temperature is obtained from fluorescence rotational branch fitting,and is about 350 K in pure water *** effects of the discharge current and gas pressure on the production and quenching processes of OH radicals are *** results show that in water vapor and He+H_(2)O mixture gas the fluorescence intensity of OH stays nearly constant with increasing discharge current,and in N_(2)+H_(2)O mixture gas the fluorescence intensity of OH increases with increasing discharge *** water vapor and N_(2)+H_(2)O mixture gas the fluorescence intensity of OH decreases with increasing gas pressure in the studied pressure range,and in He+H_(2)O mixture gas the fluorescence intensity of OH shows a maximum value within the studied gas pressure *** physicochemical reactions between electrons,radicals,ground and metastable molecules are *** results in this work contribute to the optimization of plasma reactivity and the establishment of a molecule reaction dynamics model.