Change in the Non-Equilibrium and Equilibrium Mean Charge of Ions Depending on the Thickness of a Passed Matter Layer

Abstract

The change in the charge fractions F_i (x) and the mean ion charge $\bar {i}(x)$ as the ion energy decreases with increasing thickness of the passed layer of matter x is considered. Using the proposed semiempirical method, analytical calculations are carried out for the passage of N ions with initial velocities of V₀ = 4 × 10⁸ and 6 × 10⁸ cm/s through celluloid. It is shown that in the nonequilibrium region the dependence of the charge fractions and mean ion charge on x is determined by the initial velocities and initial charges of ions i₀, and after reaching charge equilibrium, the mean charges of the ions decrease and the value of the neutral fraction F₀ increases with increasing x, regardless of the initial conditions for all considered i₀ and V₀.