IB Physics SL E.3.13 Background radiation
IB Physics SL E.3.13 Background radiation
Practise identifying background radiation from tables and graphs, then correcting measured count rates before interpreting radioactive decay data.
How this is tested
- read the non-zero constant level on a decay graph or table as the background count rate
- calculate a later measured count by decaying the source count first, then adding the constant background back in
- suggest why activity levels off above zero, for example background radiation or a systematic counter offset