TPSAS-NF1676L-31381-DND

Abstract

- Accumulation of excess negative charge generates potential differences between spacecraft ground and space (frame potential), between two points on the spacecraft surface or within materials (differential potential) - An electrostatic discharge (ESD) results when electric fields associated with potential differences (E = -∇Φ) exceed the dielectric breakdown strength of materials allowing charge to flow in an arc - Magnitude of damage depends on energy available to an arc E = ½CV^2 - Charging to a potential V depends on electrical properties of materials - Surface and volume resistivity - Dielectric constant - Secondary and backscattered electron yields, photoemission yields - Dielectric breakdown strength