A wise man comes to you and claims that it is possible to design a new type of reactor that converts

A knowing man comes to you and demands that it is likely to design a new likeness of reactor that converts half of all the passion that is produced in the kernel into electric susceptibility. Is this a realistic demand to frame in light of what you keep knowing so far in this chapter? If so, what likeness of reactor would this be most likely to be? What likeness of reactor fervid cycle would it use?