乙醇掺氮放电大气压等离子体射流的光谱特征研究  

Study on the atmospheric pressure plasma jet spectra of N_2/CH_3CH_2OH

作　　者：周永杰[1] 李斐[1] 县涛[1] 张国喜[1] 袁强华[2] 

机构地区：[1]青海师范大学物理系,青海西宁810008 [2]西北师范大学物理与电子工程学院,甘肃省原子分子物理与功能材料重点实验室,甘肃兰州730070

出　　处：《西北师范大学学报（自然科学版）》2016年第6期46-50,共5页Journal of Northwest Normal University(Natural Science)

基　　金：国家自然科学基金资助项目(11165012);甘肃省自然科学基金资助项目(145RJZA159);青海省自然科学基金资助项目(2016-ZJ-954Q);教育部春晖计划合作科研项目(Z2015047,Z2015048)

摘　　要：对乙醇放电的大气压等离子体射流进行了研究.用发射光谱(OES)法观察了等离子体光谱中的C,CN,CH和C_2基团.在Ar与乙醇混合物等离子体的光谱中,分别在473.7,516.4和563.5nm处出现了3个明显的C_2分子谱线;在388.3nm出现了CN自由基分子谱线.掺入氮气后在422nm处出现了新的CN谱线,C_2谱线则只出现在516.4nm处,473.7和563.5nm处的C_2谱线明显消失.当乙醇含量不变时,随着氮气流量的增加,可以显著地提高CN基团的谱线强度,同时有效地抑制C_2基团的谱线强度.In this work, the atmospheric pressure plasma jets spectra of Ar/CH 3 CH 2 OH and Ar/N2/CH 3 CH 2 OH are investigated.The spectral lines of C,CN,CH and C2 bands are observed in the plasma spectra via optical emission spectroscopy（OES）.In the plasma spectrum of the mixture of Ar and ethanol, the molecular spectral lines of C2 at 473.7,5 1 6.4 and 563.5 nm are assigned,and the spectral line at 388.3 nm is characterized to be CN radical.After doping N2 ,the new CN spectral line appears at 422 nm. The spectral line of C2 is only found at 5 1 6.4 nm,and the spectral lines at 473.7 and 563.5 nm disappear. When the content of ethanol keeps constant,with increasing of the nitrogen flow rate,the intensity of CN spectral line increases observably,while the spectral line intensity of C2 is suppressed effectively.

关 键 词：大气压等离子体射流 基团 谱线强度 

分 类 号：O433.4[机械工程—光学工程]