Analysis of tritium transport in irradiated beryllium

A tritium transport model called BETTY has been developed to describe and predict the kinetics of tritium transport in beryllium in fusion blanket applications. The model incorporates surface processes and trapping in He bubbles, in addition to bulk diffusion. A comparison of the results available for irradiated beryllium samples from the tritium release experiments SIBELIUS with those predicted by the model show reasonable agreement. In addition, a parametric sensitivity analysis for the variation of surface activation energies and diffusion coefficient is performed and the results of the analysis are presented and discussed.