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.