Key points are not available for this paper at this time.
Charge buildup, storage, and decay in 25-μm polyfluoroethylenepropylene (Teflon type A) foils due to irradiation with partially penetrating monoenergetic electron beams in the 10–50-keV range are investigated. Currents from the irradiated front surface and the nonirradiated rear surface are measured separately by means of 1000-Å evaporated aluminum electrodes. Charge storage due to irradiation and a charge recall effect caused by irradiation of previously charged samples are observed. Discharge currents measured after termination of the irradiation indicate the importance of the delayed component of radiation-induced conductivity. Measurements of the spatial depth of the charge are also reported. A mathematical model is developed which takes into account the radiation-induced conductivity and the electrical and geometrical parameters of the sample. It allows for the calculation of current transients during and after irradiation.
Groß et al. (Mon,) studied this question.