Physics GCSE
duration of exposure
What duration of exposure means in Physics GCSE, as defined for AQA.
Definition of duration of exposure
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Reference: AQA
Irradiation stops when the source is removed or shielded, whereas contamination continues while the atoms decay, which for a long half-life can be years.
Topics that use duration of exposure
- Radioactive contamination (AQA GCSE)
Related terms
- alpha inside the body
- contamination
- decay in contact with tissue
- internal versus external hazard
- ionising power
- irradiation
- irradiation leaves nuclei unchanged
- peer review
Using duration of exposure in the exam
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