Dependence of energy loss of light ions in Au on scattering angle and target thickness in the energy interval 25 to 500 keV/amu

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Abstract

The integral energy losses of H+, He+ and He2+ ions in thin gold foils at incident energies 40 to 500 keV have been determined experimentally. Pre-equilibrium stopping in the near-surface metal layers is found. Measurements of the energy loss straggling of protons in Au in the 9–45 nm thickness range are also been made. The straggling data are compard with the theories. The experimental angular dependence of the energy loss for protons are compared with the results of a Monte Carlo simulation of particle penetration through a foil.

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