Curve giving the activity of a radioactive nuclide as a function of time and showing the increase of the activity through the decay of the precursor or as a result of activation.
Source:
PAC, 1994, 66, 2513. 'Nomenclature for radioanalytical chemistry (IUPAC Recommendations 1994)' on page 2520 (https://doi.org/10.1351/pac199466122513)