In yet another embodiment, reflective coolant may be flowed through upper and lower axial reflectors to advect away any heat generated in these reflectors in a circulation loop that is separate from the primary cooling loop.
In yet another embodiment of a reflector design, a ‘breed and burn blanket’ may be provided surrounding the main core. In this embodiment, a reflector ‘blanket’ containing uranium could be provided, either as the only reflector or as a second reflector located inside (between the core and the primary reflector) or outside of the primary reflector. The uranium in the reflector could be either liquid or solid, and could be uranium metal, a uranium oxide, a uranium salt or any other uranium compound. The uranium in the reflector will reflect neutrons but will also breed plutonium over time, thus becoming a source of fuel.