Comparative Study on the Neutronic Performance of Thermal and Fast Molten Salt Reactors under Once-Through Fuel Cycle

Figure 9

Evolution of heavy metal mole fraction (a) and molten salt volume (b) with time under different NLR, where the FLiBe salt has a molten salt volume fraction of 15% and the LiF and NaCl salts have an initial heavy metal mole fraction of 20% and 35%, respectively.

(a)

(b)