摘要
通过发射电子束测量空间地磁场是一种新的有效的地磁场高精度测量方法,但电子束发射对在轨航天器自身状态和安全存在影响。为了研究这一影响,从同步轨道充电机制出发,基于轨道限制机制和朗缪尔方程研究了航天器发射高能电子束时的诱发充电模型,推导了不同初始电位情况下束流发射的平衡电位公式,并编制程序研究了这一过程中粒子束电流、能量、光照等因素对航天器充电电位的影响,得到了航天器对外发射高能电子束时诱发航天器自身或平台的充电电位随时间变化规律,并通过部分解析解对比验证了模拟结果的正确性。
Measuring the geomagnetic field in space by emitting electron beams is a new and effective high-precision measurement method of the geomagnetic field,but the emission of electron beams has an impact on the stateand safety of the spacecraft.To study the influence,based on the orbit-limited mechanism,the model of spacecraftcharging due to high-energy electron beam emission was studied,and the potential balance formula under differentinitial potentials was derived,and a program was compiled to study the impact of particle beam current,energy,lightelectron and other factors affecting the spacecraft charging potential.The time-varying law of the charging potentialinduced by the spacecraft itself or the platform when the spacecraft emits high-energy electron beams is obtained,andthe correctness of the simulation results is verified by the partial analytical solution comparison.
作者
任三孩
彭凯
谭谦
叶新
方进勇
Ren Sanhai;Peng Kai;Tan Qian;Ye Xin;Fang Jinyong(Beijing Institute of Tracking and Telecommunications Technology,Beijing 100094,China;China Academy of Space Technology(Xi’an),Xi’an 710100,China)
出处
《强激光与粒子束》
CAS
CSCD
北大核心
2024年第1期139-145,共7页
High Power Laser and Particle Beams
基金
国家自然科学基金项目(11605135、11605134)。
关键词
轨道限制机制
朗缪尔方程
电子束发射
航天器充电模型
数值模拟
orbit-limited mechanism
Langmuir equation
electron beam emission
model of spacecraftcharging
numerical simulation
