Features of the pre-equilibrium charge states of light ions passing through thin celluloid films

Abstract

A semi-empirical method for establishing of the average charge of ions passing through thin celluloid films is proposed. Calculations for helium (He) and nitrogen (N) ions with different initial velocities (12−18.7 × 108 cm/s for He and 4−12 × 108 cm/s for N) are presented. The equilibrium thickness of a celluloid target in dependence on the initial charge states of incident ions is evaluated.