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首页> 外文期刊>Journal of Geophysical Research, A. Space Physics: JGR >Diffusion of relativistic runaway electrons and implications for lightning initiation
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Diffusion of relativistic runaway electrons and implications for lightning initiation

机译：扩散的相对论电子和失控对闪电开始

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摘要

Using detailed Monte Carlo simulations, the diffusion coefficients for relativistic runaway electron avalanches in air are found for the range of electric field strengths applicable to thunderclouds. Diffusion causes runaway electron avalanches to spread perpendicular to and parallel to the avalanche direction, resulting in much smaller peak conductivities than would be inferred otherwise. The idea that runaway electron avalanches seeded by extensive cosmic ray air showers may initiate lightning has gained considerable popularity in recent years. However, using the diffusion coefficients calculated in this paper along with the avalanche multiplication limit from X-ray and positron feedback, it is found that even 10~(17) eV cosmic ray air showers do not produce high enough conductivities to significantly alter the electric field inside a thundercloud. As a result, it will be shown that at present, no compelling theoretical argument exists to suggest that cosmic ray extensive air showers initiate lightning.
机译：使用详细的蒙特卡罗模拟,扩散系数对相对论失控电子雪崩在空气中被发现的范围适用于电场的优势雷云。雪崩和垂直传播雪崩平行方向,导致导率比峰值将会小得多否则推断。通过大量的宇宙电子雪崩播种射线空气淋浴可能发起闪电了近年来相当受欢迎。使用扩散系数计算摘要随着雪崩乘法限制从x射线和正电子反馈,发现甚至10 ~(17)电动车的宇宙射线空气淋浴不能产生足够高导率显著改变在雷云电场。因此,它将表明,目前没有令人信服的理论观点存在宇宙射线广泛的空气淋浴发起闪电。

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