Space charge characterization by the pressure pulse method inion-irradiated polyimide films

摘要

The Pressure Pulse Method allows in situ measurements of chargebuild-up and evolution in heavy ion irradiated Kapton samples with agood signal to noise ratio. Space charge is detected in films with athickness to range ratio larger or lower than one; in the latter case,ions are crossing throughout the material but a residual charge can bedetected. The mean projected range in a thick sample,p