Transient Electron Kinetic in Diffuse Discharges

漫放电中的瞬态电子动力学

• 批准号: 8711772
• 负责人: Erich Kunhardt
• 金额: --
• 依托单位: Polytechnic University of New York
• 依托单位国家: 美国
• 项目类别: Continuing grant
• 财政年份: 1987
• 资助国家: 美国
• 起止时间: 1987-11-01 至 1991-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8711772&HistoricalAwards=false
• 关键词: Transient; Electron; Kinetic; Diffuse; Discharges

Fast pulsed diffuse discharges are widely used for pulsed power applications such as gas lasers and switches. A goal in both fields is to reduce the rise and fall times of these discharges and to develop tools to predict their time dependent behavior. Most diffuse discharges are weakly ionized and their behavior is dominated by collisions of electrons and neutrals. The current research project is concerned with their influence of specific components in a gas mixture on the discharge characteristic and on the time dependent behavior of the discharge to allow its optimization for specific applications. This proposal addresses investigations of the transient behavior of gas discharges under the influence of fast changes of reduced electric field strength E/N and/or an electron source, S. The reduction of rise and fall times into the nansecond and sub-nanosecond region requires considering the non steady state electron kinetic and its influence on the time dependent behavior of the discharge. The work includes theoretical investigations aimed towards a description of the non equilibrium electron kinetic and experimental investigations which will allow to prove the theoretical results. The theoretical investigations are based on a new numerical method, the Monte Carlo Flux method, which is being developed. This method improves the resolution function and simplifies calculations of transient processes. A suitable experimental set up to operate fast pulsed discharges will be designed and constructed and experiments will be performed to prove these model calculations.

快脉冲扩散放电是一种广泛应用于脉冲电源的放电方式 气体激光器和开关等应用。 两个领域的目标 是减少这些排放的上升和下降时间， 开发工具来预测他们的时间依赖行为。 最扩散 放电是弱电离的，其行为由 电子和中性粒子的碰撞。 目前的研究项目是 与气体混合物中特定成分的影响有关 的放电特性和时间依赖性的行为， 放电，以允许其针对特定应用进行优化。 该提案涉及的瞬态行为的调查 气体放电的影响下的快速变化的约化电 场强E/N和/或电子源S。 减少 上升和下降时间进入纳秒和亚纳秒区域 需要考虑非稳态电子动力学及其 对放电的时间依赖性行为的影响。 工作 包括理论研究，旨在描述 非平衡电子动力学和实验研究， 将允许证明理论结果。 理论 调查是基于一种新的数值方法，蒙特卡罗 通量法，这是正在开发的。 该方法提高了 分辨率函数，简化了瞬态计算 流程. 一个适合于快速脉冲操作的实验装置 排放将设计和建造，实验将 以证明这些模型计算。