Priliminary Modeling of Air Breakdown with the ICEPIC code

Details Priliminary Modeling of Air Breakdown with the ICEPIC code Priliminary Modeling of Air Breakdown with the ICEPIC code

2004-09-16

arxiv.org/abs/physics/0409082v1

Physics

Plasma Physics

Department of Defense High Performance Computing User's Group Conference Proceeding; 10 pages, 6 figures

Scientific paper

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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