由RREA产生的VHF信号的仿真
Simulation of VHF signal generated by RREA
摘要：
相对论逃逸电子雪崩（RREAs）在带电云中发展，产生伽马辐射，可以在地面和近地轨道上观测到。RREAs的无线电发射是雪崩过程的一种研究较少的表现。同时，VHF辐射可用作RREA发展条件的额外信息来源。本文介绍了用GEANT 4软件进行蒙特卡罗模拟计算RREAs产生的VHF信号的方法。我们发现逃逸电子产生的VHF辐射在0.1- 1 MHz频率范围内有一个极大值，其幅度低于背景噪声。
英文摘要：
Relativistic runaway electron avalanches (RREAs) developing in electrified clouds produce gamma radiation which could be observed both on the ground surface and on near-Earth orbit. Radio emission of RREAs is a much less studied manifestation of the avalanche process. Meanwhile, VHF-radiation can be used as an additional source of information on conditions of the RREA development. We present the method of calculating the VHF signal produced by RREAs using Monte-Carlo simulation with GEANT4. We show that VHF radiation produced by runaway electrons has a maximum at frequency range 0.1--1 MHz, the amplitude is below the background noise.
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