Mitigating Deep Dielectric Charging Effects at the Orbits of Jovian Planets

作     者：YU Xiangqian SONG Siyu CHEN Hongfei ZONG Qiugang ZOU Hong SHI Weihong CHEN Ao 于向前;宋思宇;陈鸿飞;宗秋刚;邹鸿;施伟红;陈傲

作者机构：School of Earth and Space SciencesPeking UniversityBeijing 100871P.R.China 

出 版 物：《Transactions of Nanjing University of Aeronautics and Astronautics》 (南京航空航天大学学报（英文版）)

年 卷 期：2020年第37卷第5期

页      面：804-815页

核心收录：

学科分类：08[工学] 082504[工学-人机与环境工程] 0825[工学-航空宇航科学与技术] 

基　　金：supported by Beijing Municipal Natural Science Foundation-Quantitative Research on Mitigating Deep Dielectric Charging Effects in Jupiter orbits(No.3184048) National Key Scientific Instrument and Equipment Development Projects,China(No.2012YQ03014207) 

主　　题：Jovian planets orbits Earth orbits deep dielectric charging effect space radiation 

摘      要：Deep dielectric charging/discharging,caused by high energy electrons,is an important consideration in electronic devices used in space environments because it can lead to spacecraft anomalies and *** Jovian planets,including Saturn,Uranus,Neptune and Jupiter’s moons,are believed to have robust electron radiation belts at relativistic *** particular,Jupiter is thought to have caused at least 42 internal electrostatic discharge events during the Voyager 1 *** the development of deep space exploration,there is an increased focus on the deep dielectric charging effects in the orbits of Jovian *** this paper,GEANT4,a Monte Carlo toolkit,and radiation-induced conductivity(RIC)are used to calculate deep dielectric charging effects for Jovian *** results are compared with the criteria for preventing deep dielectric charging effects in Earth *** findings show that effective criteria used in Earth orbit are not always appropriate for preventing deep dielectric charging effects in Jovian ***,Io,Europa,Saturn(R_S=6),Uranus(L=4.73)and Ganymede missions should have a thicker shield or higher dielectric conductivity,while Neptune(L=7.4)and Callisto missions can have a thinner shield thickness or a lower dielectric ***,dielectrics grounded with double metal layers and thinner dielectrics can also decrease the likelihood of discharges.