High energy PIXE quantitative analysis

In recent years, high energy PIXE was applied successfully for qualitative analysis on art and archaeological objects, e.g. coins, bronzes, sculptures, brooches. However, in the absence of software for quantitative analysis the full benefit inherent in the PIXE technique was not obtained. For example, a bronze could easily be distinguished from a brass, but the concentrations could not be rigorously compared within a set of bronzes. In this paper, the first quantitative analysis by high energy PIXE is presented. The Guelph PIXE Software Package GUPIX has been extended to proton energies up to 100 MeV, so that high energy PIXE spectra can be evaluated and concentrations derived. Measurements on metal and alloy standards at two different proton energies have been performed, and the obtained compositions were compared to the certified values. The results will be presented and deviations discussed