Abstract
The PIXE method is very suitable for applications in the biological field. We use it to study the kinetic resorption of bioceramics. The aim of this work is to compare the concentrations of mineral elements in bone to those in bioceramics. The samples are embedded in a polymethylmethacrylate resin and are considered as infinitely thick targets. The correction method is based on the experimental determination of an α parameter linking the two preponderent matrix effects: X-ray absorption and proton energy loss. This method allows corrections without making any hypothesis about the matrix composition. In this paper, we present an experimental and a theoretical determination of the correction coefficients to be applied. Thus we obtained quantitative measurements which allow us to understand better the mechanism of resorption occuring in calcium phosphate ceramics.
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