Physics GCSE
thickness monitoring
What thickness monitoring means in Physics GCSE, as defined for AQA.
Definition of thickness monitoring
Check what you remember
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Reference: AQA
A thickness gauge for aluminium sheet uses beta, because alpha would be absorbed completely and gamma would pass straight through, so only beta gives a reading that changes with thickness.
Topics that use thickness monitoring
- Radioactive decay and nuclear radiation (AQA GCSE)
Related terms
- activity
- background radiation
- choosing a half-life
- gamma ray
- independence from conditions
- ionising power
- neutron emission
- penetration
Using thickness monitoring in the exam
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