Charge accumulation in election beam irradiated various polymers

Charge accumulations in electron beam irradiated polymers are investigated by observing them using pressure wave propagation method. The purpose of our research work is to measure the charge distribution in electron beam irradiated dielectric materials for spacecrafts. We have been developing a system for measuring such a charge distribution in dielectric materials. Using this system, we tried to measure the charge distribution under electron beam irradiated various typical polymers; polyerthylene terephthalate, polystyrene, low density polythylene. As a result, itpsilas found that charging characteristics of insulating material is strongly affected by the existence of benzene ring in molecular architecture.