Consider a fuel moderator mixture consisting of 1 mole U-233 to 5 moles of Th-232 to 500 moles light water. At the operating temperature of 400 oC and pressure of 15 MPa, the density of water is 0.0639 g/cc. Note that the atomic weights of U-233 and Th-232 are 233.039627 and 232.03805, respectively. Assuming that the density of the water for this fuel mixture is the same as for pure water and assuming that ep = 0.8:
What are the atom densities for U233, Th232, and water?