Conduction and breakdown in polymer foils charged by electron irradiation

摘要

Electron beams with a range smaller than the material thickness have been utilized in the past to permanently charge thin polymer films metalized on one or on both surfaces.1,2 The dynamics of charge injection and the parameters governing the charge decay in such films can be investigated with the method of the “Split-Faraday Cup.”3,4 In particular, it is possible to study the radiation-induced conductivity (RIC), the delayed radiation-induced conductivity (DRIC) observed after termination of the irradiation, and breakdown conditions in the nonirradiated part of the dielectric.