[en] X-ray small-angle scattering is an appropriate tool for the study of inhomogeneities in alloys, as the accessible range of scattering vectors yields the required spatial resolution. It was often used in the past for pre-precipitation studies, i.e. Guinier-Preston zone formation, in supersaturated Al-Zn solid solutions obtained after quenching. However, it has not yet been used for implanted alloys because of insufficient depth penetration and consequently volume fraction of scattered particles. For this reason a specific camera has been built, employing a position-sensitive proportional counter which registers the scattering pattern by accumulation and allows measurements of very weak intensities. A comparison will be made in this study between a sample with approximately 7 at.% Zn implanted into an aluminum foil and the well-studied Al-6.8% Zn alloy. (orig.)