Simulation of Optical Properties of Inhomogeneous Molecular Contamination Thin Film Outgassed from Non-Metallic Materials

Jia Qiao

doi:10.17559/tv-20201019110413

Abstract

Simulation of Optical Properties of Inhomogeneous Molecular Contamination Thin Film Outgassed from Non-Metallic Materials

Highlights

Molecular contamination outgassing from non-metallic spacecraft materials is deposited on sensitive surfaces after diffusion, thereby degrading the performance of the optical device
To more accurately simulate the transmittance of contamination film, an optical contamination effect model was established based on diffusion theory, angle coefficient method, first-order desorption equation, Lorentz-Lorenz relation and wave propagation in hierarchical media and dielectric film theory
Molecular contamination outgassing from nonmetallic spacecraft materials is deposited on the sensitive surfaces after diffusion under vacuum and high temperature

Summary

Introduction

Molecular contamination outgassing from nonmetallic spacecraft materials is deposited on the sensitive surfaces after diffusion under vacuum and high temperature. In 2018, the Japan Aerospace Exploration Agency [10] studied the effect of contamination films on optical performance during the outgassing and desorption of epoxy resin based on HOM [11] and EMA [12, 13] and compared the calculated contaminated thickness with the actual one to validate the established model. They employed a least-square to obtain 11 parameters using the model. Ref. [10] did not consider this range, leading to an error between the calculated and experimental values

Methods

Results

Conclusion