用ICEPIC程序初步模拟空气击穿
Priliminary Modeling of Air Breakdown with the ICEPIC code
摘要：
随着用于高功率微波（HPM）武器技术的射频（RF）源的先进虚拟样机技术的出现，人们对空气击穿现象的兴趣重新燃起。空气击穿现象是令人感兴趣的，因为在RF源的孔径处形成等离子体层降低了传输到目标的功率，并且在某些情况下可能导致RF辐射的显著反射。了解这种等离子体层形成的机制将有助于开发最有效的源。本文从空气击穿背后的一些基本理论开始，描述了两种独立的方法来模拟等离子体的形成，介电流体模型和细胞中的粒子（PIC）的方法。最后，我们提出了初步的研究结果，在数值建模和模拟的击穿。
英文摘要：
Interest in air breakdown phenomena has recently been re-kindled with the advent of advanced virtual prototyping of radio frequency (RF) sources for use in high power microwave (HPM) weapons technology. Air breakdown phenomena are of interest because the formation of a plasma layer at the aperture of an RF source decreases the transmitted power to the target, and in some cases can cause significant reflection of RF radiation. Understanding the mechanisms behind the formation of such plasma layers will aid in the development of maximally effective sources. This paper begins with some of the basic theory behind air breakdown, and describes two independent approaches to modeling the formation of plasmas, the dielectric fluid model and the Particle in Cell (PIC) approach. Finally we present the results of preliminary studies in numerical modeling and simulation of breakdown.
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