A study of the effects of MeV alpha particles in PE and PVDC

摘要

We have mapped an studied the effects of MeV alpha-particle bombardment in polyvinylidene chloride (PVDC) and polyethylene (PE). We used 3.5 and 5.0 MeV alpha-particle incident beams and stacked polymer films to separate the contributing effects of the electronic ( #epsilon# _e) and nuclear (#epsilon# _n) stopping powers. The electrical conductance and change in the chemical structures were measured by direct resistivity measurement, Raman microprobe, RBS and FTIR. The results indicate significant differences in the (#epsilon# _e) and ( #epsilon# _n) effects at higher alpha-particle bombardment fluences.