Effect of Atmosphere on Recovery Dynamics of Polyimide Film Damaged by Electron Radiation

[摘要] Since electrons are the primary charged particles at the geosynchronous Earth orbit (GEO), understanding of their interactions with spacecraft materials, such as polyimide (PI, Kapton-H®), is important. Understanding of the chemical nature of electron damage and its effect on PI's electrical and optical properties is still limited. Thus, predictive spacecraft models (electrical charging, thermal, etc) are restricted to only pristine material properties. This is a major source of error in spacecraft construction and anomaly resolution, since material properties change after exposure to the space environment. Ground based measurements are critical to understanding the dynamics of spacecraft materials however it will be shown in this work that standard material handling practice and exposure to air are unacceptable for these studies.

[发布机构] Assurance Technology Corporation, United States^1;National Research Council at Air Force Research Laboratory, United States^2;Air Force Research Laboratory, Space Vehicles Directorate, Kirtland AFB; NM, United States^3;Department of Physics and Astronomy, Hunter College, City University of New York, United States^4;Physics Department, New York City College of Technology, City University of New York, Brooklyn; NY; 11201, United States^5;Graduate School and University Centre, City University of New York, New York; NY; 10016, United States^6;Aerospace Engineering Department, Worcester Polytechnic Institute, Worcester; MA; 01606, United States^7

[效力级别] 机械制造 [学科分类] 工业工程学

[关键词] Electrical and optical properties;Electrical charging;Electron radiation;Geosynchronous Earth orbit;Ground based measurement;Space environment;Spacecraft materials;Standard materials