This unit focuses on how we can use ionising radiation safely. You will need an understanding of ionising radiation from unit 5.1 for this topic.

In this topic you need to know about the following: -

  • The materials that absorb alpha, beta and gamma radiation.
  • The difference between contamination and irrdiation.
  • How we can use ionsing radiation in the body.
  • The effects of ionising radiation on the body.
  • How we can use half-lives to determine which source we use.

    • Summary
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    		 P5.1 - What is radioactivity?