Range straggling of low energy 8Li+ in thin metallic films using β-NMR

Recently it has been demonstrated that low energy spin polarized radioactive nuclei can be used to probe the electronic and magnetic properties of ultra-thin samples using β detected NMR. However, use of the technique requires an accurate understanding of ion penetration depth and range straggling as a function of beam implantation energy and target density. Range straggling measurements of 8Li were conducted with thin films of metallic Al and Au on sapphire and SrTiO3 substrates and the results were compared to SRIM code predictions