Graph of the activity of a radioactive nuclide as a function of time and showing the increase of activity through the decay of the precursor or as a result of activation.
Source:
PAC, 2021, 93, 69. 'Vocabulary of radioanalytical methods (IUPAC Recommendations 2020)' on page 71 (https://doi.org/10.1515/pac-2019-0302)