saturation activity

https://doi.org/10.1351/goldbook.S05474
For a specified isotope, the value of the activity of an irradiated element, whence state of saturation is reached.
Source:
PAC, 1994, 66, 2513. 'Nomenclature for radioanalytical chemistry (IUPAC Recommendations 1994)' on page 2525 (https://doi.org/10.1351/pac199466122513)