大气压高密度微等离子体离化波传输过程及微等离子体列阵的实验设计

项目名称： 大气压高密度微等离子体离化波传输过程及微等离子体列阵的实验设计

项目编号： No.11475042

项目类型： 面上项目

立项/批准年度： 2015

项目学科： 数理科学和化学

项目作者： 刘东平

作者单位： 大连民族大学

项目金额： 80万元

中文摘要： 大气压微等离子体具有等离子体密度高、方法简单、放电稳定、气体温度低、可控性好，最近几年成为国内外同行研究的热点。其中，采用微等离子体列阵技术可产生大面积等离子体，可实现水中稳定放电，等离子体比表面积大，大气压微等离子体列阵技术在很多领域具有潜在的应用。本项目研究内容是设计多种大气压微等离子体发生装置，监测高密度微等离子体离化波传输过程，检测各种放电参数（电源电压和频率、电压波形、气体组成、放电电极结构、微米孔径介质管形状、气体流速等）对微等离子体放电特性的影响，结合相应的物理模型模拟研究离化波传输过程，并总结其影响因素。从理论模拟方面认识微等离子体的时空分布和微米空间对离化波的约束机制，加深理解微等离子体的放电物理机制。研究大气压微等离子体列阵产生离化波的时空分布和相互作用过程，提高大面积稳定高密度微等离子体列阵的设计水平，初步开展利用该装置进行材料表面改性、水中难降解有毒有机物处理等。

中文关键词： 低温等离子体；非平衡等离子体；大气压等离子体；气体放电；离化波

英文摘要： Very recently, atmospheric pressure microplasmas confined inside one dielectric tube have attracted considerable interest because of their high plasma density, the simplicity of the experimental set-up, low gas temperature, discharge stablity, good operability. The well-aligned microplasmas running at atmosphric pressure are particularly suitable for many applications due to their large plasma volume, stable discharge in water, and large area per unit volume, modification of heat-sensitive materials. In this study, the propagation of ionization waves (IWs) in atmospheric pressure microplasmas along one dielectric tube will be presented, and the influences of electrode configurations, applied voltage and its frequency, the shape of one dielectrice tube, and the composition and flow rate of feed gases on the IW propagation will be reported. The discharge mechanisms of atmospheric pressure microplasmas will be discussed based on the experimental results. The high denisty plasmas confined inside the microns-thick hollow-core fibers will be simulated and analyzed, and the experimetal and simulated data will be compared. The spatial-temporal distirbution of IWs in well-aligned microplasmas will be detected, and their discharge process will be analyzed. The microplasma array will be ultilized for large-area surface modification of materials and the removal of non-degradation organic compounds from polluted water.

英文关键词： Low-temperature plasma;Non-equilibrium plasma;Atmospheric pressure plasma;Gas discharge;Ionization wave