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Gamma radiation

AQA A-level PhysicsRadioactivityLesson 7 of 25

The intensity of gamma radiation emitted from a point source follows an inverse square law at an increasing distance away from a point.
The energy of each photon is given by E = hf .
If the number of photons per second is n then the total energy per second from the source is given by E = nhf.

Diagram

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