The Mass Loss of Spacecraft Polyimide Films under the Action of Atomic Oxygen and Vacuum Ultraviolet Radiation

摘要

The threshold values of the annual fluence of atomic oxygen (F_(AO) ≈ 10~(20) cm~(-2)), as well as the ratios of the energy-flux density of vacuum ultraviolet radiation of the solar spectrum to the flux density of atomic oxygen (Φ_v/Φ_(AO) ≈ 8 × 10~(-15) mJ) were determined, which are characterized the influence of the synergistic effect on the mass loss of Kapton-H, PM-A, and PM-1E polyimide films, which are spacecraft materials.