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设计建立了同轴圆柱介质阻挡放电线状射流装置,并利用其实现了宽度为50mm的大尺度线状射流,并对射流长度随放电参数的变化进行了研究.研究发现,随气压、流量的增加,射流长度呈先增加后达到饱和；随激励电压的增加,射流长度增加.对氮气射流等离子体进行发射光谱诊断,表明氮气等离子体中主要是氮分子和少量氮原子,并利用光谱拟合得出射流的温度范围为290～350K.

Low temperature DBD linear plasma jet

A co-axis cylindrical dielectric barrier discharge(DBD) linear plasma jet generator is developed.The linear plasma jets with 50mm width are produced.The effect of gas pressure,flow mass,discharge voltage,absorption power and discharge chamber structure on the plasma jet length are investigated.It is found that the linear plasma length is lengthened and then saturated when gas pressure and flow mass is increased,and the linear plasma length is enhanced when the discharge voltage is increased.The nitrogen plasma jets is diagnosed by using optical emission spectra and the plasma component are analyzed.It is found that the main component existing in N2 plasma jet are N2 and a little of N.As the gas temperature equal to the rotational temperature in the plasmas,it is obtained that the gas temperatures are from 290K to 350K in the plasmas.