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Particles and Radiation - Coggle Diagram

- - - - Helium nucleus
        
        big, heavy, slow
        
        strongly ionising
        
        2 neutron, 2 proton
        
        don't penentrate far (stopped by paper/skin)
        
        +ve charge (deflected by electric/mag field)
        
        Mass no -4, atomic no -2
    - - fast, small
      - moderatley inising
      - electron
      - mod. penetrating (stopped by foil)
      - mass number same, atomic number +1
    - - energy (EM wave)
      - very pentrating (stopped by thick lead/concrete)
      - weakley ionising
      - no charge (not deflected)
      - Mass/atomic number stay same
    - - mass no -1,
        atomic no. same
- - - - Positive charge
    - - No charge
      - Diff number --> isotope
        
        Some isotopes unstable & decay
- - - - Gamma
      - find leaks in pipes
      - Passes through rocks
    - - short 1/2 life
      - injected/swallowed.
      - Check for problems in body
  - - - fusing H nuclei - releases lots of energy
      - Maybe viable one day!!!
      - Needs high temp and pressure
    - - Spliting U-235
      - Slow moving neutrons cause chain reaction
      - Heats steam, drives turbbine, makes electricity
      - moderator and control rods slow reaction
      - Need thick sielding to protect workers
- - - - lasts 1000s of years
      - Bery in seeled containers
      - need secure /stable site. Can leak