Moderator:
- Graphite is used as a moderator.
- The purpose of the moderator is to absorb some of the kinetic energy of the neutrons to slow them down.
- This is because slow neutrons are more easily absorbed by uranium 235 nuclei.
Control rods:
- Made of boron or cadmium.
- The purpose of the control rods is to absorb neutrons and completely remove them from the fission process.
- Helps adjust the rate of nuclear fission in the reactor.
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