Physics Module P2.7 Nuclear Fission

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  • P2.7 Energy from the Nucleus - Nuclear Fission
    • When a Neutron undergoes Fission it releases .....
      • Two or three Neutrons at high speed
      • Energy in the form of Radiation
    • The Water acts as a coolant
      • Molecules gain Kinetic Energy from Neutrons
      • Water transfers energy for heating to the exchanger from the core
    • Reactor core made of thick steel
      • Able to withstand high temperatures and high pressures
    • Inside a Nuclear Reactor .....
      • Consists of Uranium fuel rods in the core
        • Water acts as a moderator because it slows down Nuclear Fission Neutrons
      • Contains : Fuel Rods, Control Rods and Water at high pressure
      • Fission Neutrons are slowed down by collisions with atoms in water
        • Control Rods absorb surplus Neutrons - keeps chain reaction under control - depth of rods adjusted to maintain steady chain reaction
    • Core enclosed by thick concrete walls
      • Absorb radiation that escapes through the steel
  • Inside a Nuclear Reactor .....
    • Consists of Uranium fuel rods in the core
      • Water acts as a moderator because it slows down Nuclear Fission Neutrons
    • Contains : Fuel Rods, Control Rods and Water at high pressure
    • Fission Neutrons are slowed down by collisions with atoms in water
      • Control Rods absorb surplus Neutrons - keeps chain reaction under control - depth of rods adjusted to maintain steady chain reaction

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