Energy loss calculations for fast light ions in celluloid including charge-exchange processes

A method is proposed to calculate the charge-exchange energy loss (−dE/dx)ex and electronic energy loss (−dE/dx)el on the basis of the electron capture and loss cross-sections, extracted from the experimental data. The experimental and calculated results are presented for energy loss of projectile ions Be, B, N and O with 0.35 MeV/nucleon, passing through celluloid films. The dependence of energy loss on the initial charge of projectile ions and target thickness in nonequilibrium conditions is examined.