作　　者： (郝芳）; (董丽芳）; (杜天）; (崔义乾）; (冯建宇）; (范伟丽）;

机构地区： 河北大学物理科学与技术学院,保定071002

出　　处： 《中国科学：物理学、力学、天文学》 2017年第9期63-70,共8页

摘　　要： 本实验首次在双水电极介质阻挡放电装置中获得暗环白眼超四边形斑图.该斑图的每个四边形晶胞内都包含一个由黑色圆环围绕的中心亮点.这种黑色圆环围绕中心亮点的结构类似于白眼晶胞,称为暗环白眼.利用高速照相机研究暗环白眼超四边形斑图的时空结构.结果发现,暗环白眼超四边形斑图由4套不同的子结构相互嵌套而成,在每半个外加电压周期内,子结构的放电顺序依次为:中心亮点-亮点晕-顶点四边形-顶点连线.其中,暗环白眼是由中心亮点和周围的环形不放电区域组成的.利用壁电荷理论解释了暗环白眼超四边形斑图的形成机制和暗环的形成原因. The dark-ring white-eye square super-lattice pattern was studied in dielectric barrier discharge system for the first time. Each unit cell of the pattern consisted of a central bright spot surrounded by a dark ring, The structure of dark ring around the center bright spot was similar to the white-eye, which was called the dark-ring white-eyes. The spatial-temporal dynamics of the dark-ring white-eye square super-lattice pattern was investigated by high speed frame camera （HSFC）. The results showed that the dark-ring white-eye square super-lattice pattern was an interleaving of four different sub-structures. The discharge sequence was center bright dot-bright dot halo-vertex square-vertex connection in each half voltage cycle. The formation mechanism of dark-ring white-eye square super-lattice pattern and dark ring was explained by surface charges theory.

关 键 词： 介质阻挡放电 白眼斑图 壁电荷 时空动力学