Study On The Effect Of Electromagnetic Pulse Field On The Plasma Environment Of Electrostatic Discharge Of Needle-Plate Electrode

With the continuous development of aerospace technology,the electromagnetic environment and plasma environment of spacecraft is becoming more and more complex.The application of high-frequency signal base stations,high-power microwaves,and electromagnetic weapons can make electronic equipment be affected by external electromagnetic pulses.At the same time,the application of various integrated chips and circuits also makes the electronic control system more susceptible to electromagnetic pulse interference.When a spacecraft is irradiated by transient high-energy particles,the movement of these electrons can generate strong currents and transient electromagnetic fields,which are sufficient to couple with sensitive electronic circuits containing semiconductor devices or similar electronic components,which will cause these devices or Momentary electrical failure or permanent damage to a component.This paper investigates the mechanism and law of discharge caused by a strong electromagnetic field.The analysis is conducted through theoretical,simulation,and experimental perspectives to study the characteristics and law of the discharge.The main focus of the research work includes:Combining with Boltzmann drift diffusion equation and Poisson equation,the hydrodynamic model of discharge in non-uniform electric field is established.Based on the stream theory and induced discharge theory,the collision generation and disappearance of charged particles in the discharge process are derived,and the discharge parameters such as average electron energy and electron mobility are solved.the simulation results are basically consistent with the theoretical analysis,the effectiveness of modeling and simulation is proved.Building upon this,a simulation model was developed for electrostatic discharge induced by a strong electromagnetic field,and the macroscopic phenomenon and microscopic mechanism of electrostatic electromagnetic pulse field induced discharge were simulated.The effects of electrostatic electromagnetic pulse field on electric field intensity,photon flux and heavy ion characteristics in the process of gas discharge are analyzed.Considering many different influencing factors such as the external environment,a simulation model of the needle-plate electrode discharge induced by the electrostatic discharge electromagnetic pulse field under the condition of air pressure and initial electron density in the space environment was established.The study found that the strength of the electrostatic electromagnetic pulse field was constant.As air pressure decreased,the field strength of the streamer head region decreased,accelerating the streamer development speed.With the increase of the initial electron density,the electric field strength and the average electron energy gradually decrease,the development speed of the streamer is accelerated,the breakdown time is shortened,and the breakdown voltage threshold is reduced.An experimental platform for electrostatic discharge induced by electrostatic discharge electromagnetic field in air environment is built.Taking the pin-plate electrode as the research object,this study explores how the electrostatic discharge threshold and induction characteristics are affected by the output voltage and electrode voltage of an electrostatic discharge simulator.The above research provides theoretical and experimental basis for spacecraft antistatic safety technology.