Europium diffusion in IG-110 nuclear graphite

Europium diffusion in graphite has been recognized to be of interest high-temperature gas reactor safety analysis, particularly as an indicator strontium diffusion. However, no measurements europium coefficients have reported the literature. In this work, effective coefficient was measured using a time-release method. Natural loaded into pre-milled unirradiated IG-110 spheres pressurized acid digestion vessel. The experiments were performed temperature range 1823 K – 1973 SiC cell connected inductively-coupled plasma mass spectrometer (ICP-MS) via He line. results work are: DEu,IG−110=(1.5×10−3m2/s)exp(−2.87×105J/molRT)This can used aid predictive modelling transport HTGRs.