| Two levels of the caesium nuclide of atomic mass number 133 have proven to be particularly suitable, the energy difference of which corresponds to a frequency in the microwave range. |
| Many radiopharmaceuticals use technetium-99m that has many useful properties of gamma-emitting tracer nuclide. |
| To be regarded as distinct a nuclide must have an energy content sufficient for a measurable lifetime, usually more than 10−10 second. |
| The dating method measures beryllium-10, a nuclide produced in rocks when they are struck by cosmic rays. |
| Many radiopharmaceuticals use technetium-99m, that has many useful properties of gamma-emitting tracer nuclide. |
| Calculation of total gamma activity is based on nuclide fingerprints which can be specific to the measurement sessions. |
