This analysis groups fission fragment populations with an odd kluge of aggregation methods. The first group consists of the nine half-life bins, Time_Bins 0-8. The numbers for these exclude isomers and shadow-side nuclides, which are listed separately. The shadowed numbers include isomers, so the given isomer values are for the main decay chains only.
Contribution by Group
|Group||Isotopes||Yield (atoms)||Contribution (%)|
Yields for Timestep 20 (12 days), 235-U/Slow with capture
There are a total of 2,097,152 (2Meg) atoms in the waste stream at Snapshot 20. About 45% 0f those are stable by then, and 16% are primordial.
The contribution of shadow-side nuclides increases with neutron capture. Some stable isotope can capture a neutron and move to the right on the NuDat chart. This can place them on an Isolated Island. From there, a B- decay will move them to the second sink.