介质阻挡放电呼吸振动超四边形斑图研究  

Study on breathing vibration square superlattice pattern in dielectric barrier discharge

作　　者：卫婷 董丽芳[1] 张立佳 贺玉楠 李耀华 李骋 潘宇扬[2] WEI Ting;DONG LiFang;ZHANG LiJia;HE YuNan;LI YaoHua;LI Cheng;PAN YuYang(College of Physics Science and Technology,Hebei University,Baoding 071002,China;College of Quality and Technical Supervision,Hebei University,Baoding 071002,China)

机构地区：[1]河北大学物理科学与技术学院,保定071002 [2]河北大学质量技术监督学院,保定071002

出　　处：《中国科学：物理学、力学、天文学》2024年第10期157-169,共13页Scientia Sinica Physica,Mechanica & Astronomica

基　　金：国家自然科学基金(编号:12075075);河北大学校长基金项目(编号:XZJJ202317);河北省自然科学基金(编号:2020201016,A2018201154)资助。

摘　　要：本工作设计了正方形网格放电气隙的介质阻挡放电装置,在氩气和空气的混合气体中首次发现了具有呼吸振动的超四边形斑图.在实验上,采用高速录像机对斑图进行研究,发现每一网格中心放电丝(C)及4个顶点放电丝(S)是静止的,而位于两者中间区域的放电丝(L)做非简谐振动.振动周期随混合气体中氩气含量的增加而减小,其变化范围为1.7‒6.8 ms.采用高速照相机和光电倍增管对斑图进行研究,发现每半电压周期里C-L-S依次放电.在模拟上,数值求解拉普拉斯方程,获得外加电场.基于壁电荷产生的库仑力和外加电场产生的径向电场力,建立L的动力学方程.模拟L的运动轨迹,发现其做非简谐振动.模拟发现振动周期随氩气含量的增加而减小,周期的模拟结果在3.5‒4.8 ms范围内.模拟结果与实验结果相符.本工作对推动介质阻挡放电微放电运动机制的研究具有重要意义.We report,for the first time,a square superlattice pattern with breathing mode vibration in dielectric barrier discharge containing an air-argon mixture by designing a square grid gas gap.In an experiment,center filaments(C)and four corner filaments(S)of the grid are stationary,while filaments(L)in the middle of the two regions are in nonharmonic vibration,as observed using a high-speed video camera.The vibration period decreases with the increasing argon content in the gas mixture,varying from 1.7 to 6.8 ms.Notably,C-L-S discharges successively per half voltage cycle using intensified charge-coupled devices and multiple photomultiplier tubes.In our simulation,the applied electric field is numerically simulated by solving Laplace’s equation.The dynamic equation of L is set based on the Coulomb force generated by the wall charge and the radial electric field force generated by the applied electric field.The simulation trajectory of L shows nonharmonic vibration.Moreover,simulated period of vibration decreases with the increasing argon content,varying from 3.5 to 4.8 ms,which is consistent with the experimental results.This work is of great significance in promoting the study of the moving mechanism of microdischarge in dielectric barrier discharge.

关 键 词：介质阻挡放电 斑图 呼吸振动 

分 类 号：O461.2[理学—电子物理学]