Charge-state changing processes for Ne ions passing through thin carbon foils - art. no. 032901

We report on a method to measure charge-changing cross sections for ions pa ssing through matter it? nonequilibrium conditions. The charge states of an initial distribution are separated by applying a high voltage before they penetrate thin carbon foils; the charge states after those foils are identi fied using a high resolution magnetic spectrometer. Thus the full matrix of cross sections sigma(q(i),q(f)) and energy losses Delta E(q(i),q(f)) is ob tained. The data are compared to calculated charge-state distributions base d on microscopic cross sections for charge-changing processes in individual interaction steps and with a Monte Carlo simulation.