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Radioactivity - Coggle Diagram

- - - - Nothing happens
  - - - In neutron radiation the mass number (top) decreases by 1
  - - - In beta decay the atomic number (bottom) increases by 1 but the mass number (top) stays the same
  - - - During alpha decay the atomic number (bottom) decreases by 2 and the mass number (top) decreases by 4
- - - - Examples
        
        Contaminated equipment, materials and protective clothing
      - Put in strong containers surrounded by concrete, and put into clay lined landfill sites
    - - Examples
        
        Components from nuclear reactors, radioactive sources used in medicine or research
      - Mixed with concrete and put in strong, stainless steel (rust-proof) containers in a purpose-built store
    - - Examples
        
        Used nuclear fuel and chemicals from reprocessing fuels
      - Stored in seawater in large pools for 20 years to dilute
      - Placed in strong, rust-proof containers in purpose-built underground stores where air can circulate to remove the heat produced.
      - Guarded from terrorists
- - - - The ionising radiation enters the chamber and causes a spark which sends an electrical impulse to the electrode which adds 1 count to the counter
    - - The photographic film turns the image from white to black when it is hit with ionising radiation
- - - - Alpha particles (helium nucleus) have 2 neutrons and 2 protons. Mass of 4 and positive charge
        
        Alpha particles travel slowly and are stopped by a piece of paper
        
        ⁴₂α
      - Beta particles is an electron with high energy. Mass of 1/2000 and negative charge
        
        Beta particles travel fast and are stopped my aluminum
        
        β
      - Gamma particles are pure energy
        
        Gamma particles travel at the speed of light and are stopped by lead
        
        γ