Strategies for Determining Electron Yield Material Parameters for Spacecraft Charge Modeling

Modeling of space plasma environment-induced anomalies requires knowledge of: Environment and impinging fluxes during spacecraft orbits, which are mission specific and can be incorporated through environmental models and databases. Satellite geometry and orientation in the space environment, accomplished through such charging codes as NASCAP-2K, SPENVIS, or MUSCAT. Materials used in spacecraft construction, from the specific spacecraft design. Relevant materials properties characterizing the interaction of the materials with the environment and how these properties may change with exposure to the space environment. A reliable, comprehensive database of spacecraft materials and the characterization of those materials is being created in the form of a materials charging database. This is being done to provide an improved, more informed modeling tool for environment-induced spacecraft charging