Radiation

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Across
  1. 2. to give an atom or molecule a charge
  2. 5. this bumps into nitrogen 14 to create a radioactive carbon isotope
  3. 7. how we measure the rate of decay by radioactive isotopes
  4. 8. the type of radiation with a negative charge
  5. 9. the most ionising type of radiation
  6. 10. this use of radiation exposes the dirty instrument to gamma rays for a period of time
  7. 12. the biggest source of background radiation
Down
  1. 1. the type of radiation that travels at the speed of light
  2. 3. emits alpha radiation directed at a radiation centre
  3. 4. the emitting nucleus doesn't change in this type of decay
  4. 6. the biggest artificial source of background radiation
  5. 11. this is released with energy when bet decay occurs