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大气层核爆炸常分为空中爆炸和地面爆炸,后者又可分为触地爆(爆心位于地面)和爆心位于地面以上一定高度,但火球仍接触地面的爆炸。当前核武器命中精度日益提高,计算触地爆电磁脉冲更显得有重要意义。触地爆的特点之一是爆心位于地面,这时大地影响显著,从而爆心上下半球电气参数如电导率σ、康普顿电流密度 J 等也明显不对称,以至产生很强的水平磁场;这种水平磁场的产生机理、波形、分布规律、频谱成份等常是核电磁脉冲防护技术所需考虑和计算的内容.本文试图略加探讨,以便进一步研究。
Atmospheric nuclear explosions are often divided into aerial explosions and ground explosions, which can be further divided into ground-contact explosions (ground-foci lying on the ground) and ground-fissures above a certain height, but fireballs still touch the ground. At present, the accuracy of hitting nuclear weapons is increasing day by day. It is more important to calculate the electromagnetic pulse of ground-breaking explosive. One of the characteristics of the ground-breaking burst is that the ground is located on the ground. At this time, the earth has a significant impact, so that the electric parameters such as the conductivity σ and the Compton current density J in the ground up and down hemispheres are also significantly asymmetric, resulting in a strong horizontal magnetic field. The production mechanism, waveform, distribution law and frequency spectrum of the horizontal magnetic field are often considered and calculated for the nuclear pulse protection technology.This paper attempts to discuss briefly for further study.