CHARGING OF POLYMER FOILS WITH MONOENERGETIC LOW-ENERGY ELECTRON BEAMS

Abstract

Results of charge deposition on 12.7 and 25.4-μm polymer foils with 10- to 40-keV monoenergetic electron beams are reported. The trapped charges have densities of about 10−7 C/cm2, with a uniformity of ± 5% over the bombarded area. The time constants of the charge decay are typically of the order of tens of years. Thermally stimulated currents show a more densely populated high-temperature portion than for foils charged with other methods.