I. Introduction
The CENTRAL theme of spacecraft charging is how spacecraft interact with the plasma environment to cause charging. Spacecraft materials accumulate negative or positive charge and adopt potentials in response to interactions with the plasma environment. A material's electron emission and total electron yield (defined as the ratio of net electron flux out of a material to the incident electron flux) determine how quickly net charge accumulates in spacecraft components in response to incident electron, ion, and photon fluxes. The total yield is commonly written as the sum of backscattered electron (BSE) and secondary electron (SE) yields. The material resistivity determines how quickly that charge is dissipated. In a thin-film capacitor approximation, the decay time is linearly proportional to ; is the relative dielectric constant of the material. Due to their high mobility, incident electrons from the space plasma play a more significant role in electron yield and in resulting spacecraft charging than positively charged ions do. For this reason, the focus of this study is on electron interactions; ion and photon interactions are neglected.