A method for the determination of recoil ion ranges needed in DSA measurements

From the yield curve of the27Al(p, γ)28Si reaction obtained with implanted targets, the range distributions and mean ranges of 50 keV Al+-ions have been determined in C, Cu, Mo and Ta. The energy straggling of protons has been taken into account in the analysis. The DSA lifetime values in different backing materials are in good agreement when measured ranges are used for the determination of the stopping parameters.