Medical Radioisotope Production in a Power-Flattened ADS Fuelled with Uranium and Plutonium Dioxides

Figure 1

(a) Cross-sectional view of the investigated ADS (① SNT: spallation neutron target, ② SCZ: subcritical core zone (divided into ten equidistant subzones), ③ RZ: reflector zone, and ④ SZ: shielding zone; dimensions are in cm). (b) Top cross-sectional view of sample two hexagonal arrangements of the fuel mixture rods (shaded) and the material rods used for the radioisotope production in the subcritical core zone (inner and outer radiuses ( and ) of the rods are 0.51 cm and 0.55 cm, resp., pitch length = 1.2 cm, and the volume fractions of fuel mixture (total 5 rods), materials used for isotope production (total 7 rods), clad, and coolant are 25%, 35%, 10%, and 30%, resp; the dimensions are not in scale).

(a)

(b)