L3 Nuclear Reactors Nuclear Reactors 1 A. Boron or cadmium Nuclear Reactors 2 A. To slow down neutrons so they are more likely to initiate other fission reactions Nuclear Reactors 3 A. The fast neutrons produced in fission have a very small chance of causing further fissions. Nuclear Reactors 4 A. Chain reaction Nuclear Reactors 5 A. A very slow neutron Nuclear Reactors 6 A. Water Nuclear Reactors 7 A. Uranium-235 Nuclear Reactors 8 A. 2, 3, 6 Nuclear Reactors 9 A. Fission products are neutron rich and therefore unstable Nuclear Reactors 10 A. So that nuclei have enough speed to get close enough and fuse B. The correct pressure C. High magnetic fields contain the fuel while it is heated