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arXiv physics/0609247physics.plasm-phphysics.ao-ph
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负流光中的光电离:快速计算和两种传播模式

Photoionization in negative streamers: fast computations and two propagation modes

Alejandro Luque, Ute Ebert, Carolynne Montijn, Willem Hundsdorfer

摘要:

流光放电在脉冲电场中物质的电击穿中起着核心作用,无论是在自然界还是在技术上。可靠和快速计算的极小模型的负流光在简单的气体,如氮气最近已经开发。然而,光电离不包括在内;它在空气中很重要,并构成了一个重大的数值挑战。本文介绍了一种快速可靠的方法,将光电离纳入我们的数值计算方案中,并讨论了它对负流光的重要性。特别是,我们确定不同的传播制度,光电离或不发挥作用。

英文摘要:

Streamer discharges play a central role in electric breakdown of matter in pulsed electric fields, both in nature and in technology. Reliable and fast computations of the minimal model for negative streamers in simple gases like nitrogen have recently been developed. However, photoionization was not included; it is important in air and poses a major numerical challenge. We here introduce a fast and reliable method to include photoionization into our numerical scheme with adaptice grids, and we discuss its importance for negative streamers. In particular, we identify different propagation regimes where photoionization does or does not play a role.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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