RANGES OF HEAVY IONS IN AMORPHOUS OXIDES

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Abstract
The range distributions of Na24, Ar41, Kr85, and Xe125 ions in amorphous Al2O3 and WO3 have been measured in the energy interval 0.5 to 160 keV. The experimental technique consisted of measuring the transmission through oxide layers formed anodically on metal foils. The penetrating tail of distributions measured in crystalline targets is found to be absent in amorphous targets. Comparison with the calculations of Lindhard et al. (1963), who assume a random distribution of the target atoms, shows good agreement between theory and experiment.