Physics A-Level
Absorption and shielding
What Absorption and shielding means in Physics A-Level, as defined for AQA.
Definition of Absorption and shielding
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Reference: AQA
Beta particles need a few millimetres of a low-Z absorber like aluminium, as high-Z materials like lead increase bremsstrahlung X-ray production; gamma rays need thick lead or concrete.
Topics that use Absorption and shielding
- Rutherford scattering (A-level only) (AQA A-Level)
Related terms
- Absorption experiment
- Absorption of radiation
- Atomic and nuclear structure
- Background radiation
- Background radiation and correction
- Choice of radiation source
- Corrected count rate
- Development of scientific models
Using Absorption and shielding in the exam
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