Multicomponent approximation for evaluation of nonequilibrium charge fractions of ions passing through thin films

A method is proposed to calculate the nonequilibrium charge fractions and mean charges of light ions, depending on film thickness. The calculated results are presented for three charge fractions of 0.75 MeV/nucleon B ion beam, passing through the organic film, and for four charge fractions of 2 MeV/nucleon Ne beam, passing through the carbon film. The dependence of energy loss on the initial charge of projectile Ne ions and target thickness in the nonequilibrium conditions is examined.