【作者】 李杰； 李喜； 谢宇彤； 王远； 江孝国； 龙继东； 章林文；

【Author】 LI Jie;LI Xi;XIE Yu-tong;Wang Yuan;JIANG Xiao-guo;LONG Ji-dong;ZHANG Lin-wen;Institute of Fluid Physics,China Academy of Engineering Physics;Key Laboratory of Pulsed Power,Institute of Physics,CAEP;Graduated School of CEAP;

【机构】 中国工程物理研究院流体物理研究所； 中国工程物理研究院脉冲功率科学与技术重点实验室； 中国工程物理研究院研究生部；

【摘要】 多层介质阻挡放电在纵向空间增大放电等离子体的体积及其与材料相互作用的表面积,在实际工业生产中将有广泛的应用前景。本文采用单极性重复频率高压亚微秒脉冲功率源,激励多层介质阻挡放电,在大气压空气中获得均匀的放电等离子体,采用普通相机(曝光时间1/17 s)不能分辨放电细丝的存在。采用高速相机对三层介质挡板两层2mm间隙放电过程进行高速摄影实验,在曝光时间5 ns情况下对放电等离子体进行拍摄,发现上下两层间隙放电发光均匀分布在整个放电间隙,并且两层发光强弱保持良好的一致性,表明多层介质阻挡放电击穿具有同时性。更多还原

【Abstract】 Multilayer dielectric barrier discharge can efficiently enlarge the volume of plasma and its interreaction surface area with materials in the longitudinal direction,which seems attractive to the industry application.In this paper,a new plasma generator of DBD structure which has multilayer dielectric barrier boards is introduced,and homogeneous plasma has been obtained in atmospheric pressure air.The discharge filaments can’t be distinguished by common camera with the exposure time of 1/17 s.Experiments of high speed photography with the exposure time of 5 ns has been carried out to the discharge with three layers of dielectric barrier boards with each gap width of 2 mm.It can be found that luminescence of the discharge distributes uniformly throughout the upper and the lower gaps.The two layers of the luminescent intensity keeps good consistency with each other,and this indicates that breakdown of each gap layers happens at the same time in a multilayer DBD.更多还原