cumulative fission yield

https://doi.org/10.1351/goldbook.C01438
The fraction of
fissions
which have resulted in the production of a
nuclide
either directly or indirectly, up to a specified time. If no time is specified, the yield is considered to be the asymptotic value.
Source:
PAC, 1982, 54, 1533. (Glossary of terms used in nuclear analytical chemistry (Provisional)) on page 1542 [Terms] [Paper]