# Keyword:HALF

HALF

This keyword causes the half-life of each nuclide to be printed in the output at all timesteps. The units are seconds, but if the nuclide is stable then the word ‘Stable’ is printed. If this keyword is not used then an indication of the stable nuclides in the output can be seen in the ‘flags’ section to the right of the nuclide identifier.

Example usage:

< -- Control phase -- >
...
FISPACT
* Title of the simulation
< -- Initial phase -- >
...
HALF
...
< -- Inventory phase -- >
...