20.08.2015   Thoria-based Nuclear Fuels

Irradiation Behavior

Studies of irradiated fuels provide important data on the thermodynamics and chemistry of the fission products at high bumup. Generally, four distinct groups of fission products are observed in irradiated nuclear fuel [85, 125]:

(a) oxides dissolved in the matrix: Sr, Zr, Nb, Y, La, Ce, Pr, Nd, Pm, Sm;

(b) metallic precipitates: Mo, Tc, Ru, Rh, Pd, Ag, Cd, In, Sb, Te;

(c) oxide precipitates: Ba, Zr, Nb, Mo, (Rb, Cs, Te);

(d) gases and other volatile elements, e. g.: Kr, Xe, Br, I.