Post-foil interaction in the foil-induced dissociation of 3.25-MeV CH+

The foil-induced dissociation of 3.25-MeV C${\mathrm{H}}^{+}$ is investigated by coincident detection of the fragment atoms resulting from this Coulomb explosion. The dissociation energies are deduced for both the explosion in the foil and for the post-foil interactions. The proton-carbon dissociation energies exhibit a linear dependence on the carbon charge state demonstrating a nonvarying charge state during the post-foil interaction. The data for neutral hydrogen in coincidence with carbon ions show a marked dependence of the dissociation energies on the carbon charge states. The post-foil interaction of the neutral atoms is half that of the protons. A model is suggested to explain these results.