Stopping forces of polyimide, vyns, formvar, and polysulfone for Cl, Br, and I ions

The stopping forces of formvar, polysulfone, polyimide, and vyns for 0.1–0.7 MeV/u 35Cl ions, 0.1–0.4 MeV/u 79Br ions, and 0.1–0.2 MeV/u 127I ions have been measured with the transmission technique and thin foil targets. A modified time of flight elastic recoil detection analysis setup and simulation of experimental slowing down energy spectra were employed for obtaining stopping force curves over a continuous range of energies. The results are compared with predictions of widely used parameterization models for the stopping force.