Typical apparatus for measuring gamma radiation
The exam boards for A-level physics require or suggest a number of practical activities that will allow you to satisfy the Common Practical Assessment Criteria (CPACs). Among other requirements, these expect you to be able to use measuring instruments or a data logger with a variety of sensors to collect data, or to use software to process data. Measuring the radiation from a gamma source gives an excellent opportunity to practise these skills and to carry out an experiment safely.
A gamma source is held in a clamp at a distance d from a Geiger-Muller (G-M) tube. The distance between the G-M tube and the source is measured.
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