用高频近似模型和入射-出射波模型对早期高空核电磁脉冲场的计算比对  

Comparison of Two Simplified Models of Early-Time High Altitude Electromagnetic Pulse Field Equation——Comparison Between High Frequency Model and Ingoing-Outgoing Model

作　　者：付梅艳[1] 张茂钰[1] 

机构地区：[1]西北核技术研究所,西安710024

出　　处：《现代应用物理》2015年第2期107-112,共6页Modern Applied Physics

基　　金：国家自然科学基金资助项目(61231003)

摘　　要：在康普顿电流和电导率相同的条件下,分别采用高频近似模型和入射-出射波模型对早期高空核电磁脉冲场进行一维计算,得到了地面上电场峰值的分布图以及爆心下方、空间某测试点的电场分量波形比对图。分析表明,计算结果符合对早期高空核电磁脉冲的规律性认识,同时两种方法得到的电场峰值、上升沿、脉宽、下降沿以及整体形状差异很小,说明两者均适用于早期高空核电磁脉冲场的计算。比较而言,高频近似模型的理论来源清晰、方程形式简单,便于求解,所以在实际研究中大多采用该模型。The early-time high altitude electromagnetic pulse was simulated in one dimension with high frequency approximation model and ingoing-outgoing model at a given Compton current density and air conductivity. The peak electric field distribution on earth and the waveforms of electric field at a test point below the explosion were obtained and compared. The results are in accordance with that we have known about the early-time high altitude electromagnetic pulse environment, and there is little difference between the waveforms of electric field from the two models. Both of the two models could be used for computing the early- time high altitude electromagnetic pulse fields. But the high frequency approximation model has a clearer origin, a simpler equation form, and could be solved more easily, so it is used more commonly.

关 键 词：早期高空核电磁脉冲 高频近似模型 入射-出射波模型 

分 类 号：TN011[电子电信—物理电子学] O572[理学—粒子物理与原子核物理]