Dynamic analysis of nuclide diffusion with illitization of the buffer material

A dynamic analysis of illitization of buffer material is presented. The time dependence of the nuclide concentration is calculated with decrease of the sorption capacity taken into account. The results are compared with those from a conventional static analysis which yields an upper bound of the nuclide concentration. It is shown that the upper-bound analysis for americium-243 substantially overestimates the nuclide concentration.