Evidence of Shell Effects and the Approach to Equilibrium in the Charge-State Distributions for 15-160 MeVBr79andI127Ions in Carbon

Equilibrium charge distributions of ${}_{}{}^{79}{}_{}{}^{}\mathrm{Br}$ and ${}_{}{}^{127}{}_{}{}^{}\mathrm{I}$ ions have been obtained with an electrostatic analyzer. Influences of ionic shell structure upon the charge distributions have been found. Thin carbon foils (8-78 μg/${\mathrm{cm}}^2$) have been used to observe the approach to charge-state equilibrium.