超点阵斑图形成前放电丝时空特征  

Spatial and Temporal Characteristics of the Filaments Before Superlattice Pattern Formation

作　　者：李媛媛[1] 董丽芳[1] 宋倩[1] 肖红[1] 岳晗[1] 

机构地区：[1]河北大学物理科学与技术学院,河北保定071002

出　　处：《河北大学学报（自然科学版）》2010年第6期643-646,共4页Journal of Hebei University(Natural Science Edition)

基　　金：国家自然科学基金资助项目(10775037);河北省自然科学基金资助项目(A2008000564)

摘　　要：为了更清楚地了解超点阵版图形成的规律,实验研究了介质阻挡放电中超点阵形成前放电丝的时空特征.结果发现,如果单个放电丝边界呈锯齿状,放电丝没有固定的运动方向,并且单个放电丝的放电时间间隔没有明显的长短交替行为,那么升高外加电压后斑图不会演化成超点阵斑图.如果单个放电丝的边界平滑、相互之间存在粘连并且运动方向总朝着几个固定的方向,单个放电丝的放电时间间隔有明显长短交替行为,那么升高外加电压将出现超点阵斑图.Spatial and temporal characteristics of filaments in the state before superlattice pattern formation has been investigated in dielectric barrier discharge. It is found that, if individual filament with serrated border, with no fixed direction in motion, and time intervals between two adjacent discharges are almost equal, no super-lattice pattern is formed when the driving voltage is increased. If the boundary of individual filament is smooth, time intervals between two adjacent discharge are obviously not equal,with dim discharge between two filaments, and fixed directions in motion, super-lattice pattern is formed as the driving voltage increasing.

关 键 词：介质阻挡放电 超点阵斑图 微放电通道 时空特征 

分 类 号：O461[理学—电子物理学]