Response of Plasma Flow Field to Nuclear Electromagnetic Pulse in Near Space
With the development of national missile defense system,we must rely on new ways to penetrate the existing strategic balance to maintain.Near space vehicle is one of the most promising means of a highly efficient of penetration.Near space vehicle can effectively circumvent the Kinetic Energy Interceptor,but low-yield nuclear detonation may be faced with a typical combat scenario.Nuclear explosions in near space on the impact of near space vehicle are particularly important.In this paper,finite-difference time-domain(FDTD)method has been discussed for complete simulation of nuclear electromagnetic pulse(NEMP)originating from an atmospheric nuclear detonation in near space.The Compton current formula and the simplified model of solving the Maxwells equations are described.In addition,the typical results that the plasma flow field of near space vehicle is generated by the ionization between high-speed flight and the thin air in near space are presented.The coupling between nuclear electromagnetic pulse(NEMP)in nuclear exploding source region and the plasma flow field of near space vehicle is studied.To achieve this purpose,the radiated field in nuclear exploding source region is calculated using a late-model iterative equation including the electron plasma extra conductivity effect.Because of the free electron plasma extra conductivity,the corresponding conduction current is offset by the Compton current,resulting in significant decline in the peak transverse electric field.The presented results may be used in electromagnetic compatibility analysis of near space vehicle.
Bo-Rui Bian Shao-Bin Liu Xiang-Kun Kong Chun-Zao Li
College of Electronic and Information Engineering Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China
国际会议
Progress in Electromagnetics Research Symposium 2011(2011年电磁学研究新进展学术研讨会)
苏州
英文
1038-1042
2011-09-01（万方平台首次上网日期，不代表论文的发表时间）