# Keyword:XSTHRESHOLD

XSTHRESHOLD xs_thresh {1.0E-12}

This keyword specifies minimum cross section for inclusion within the pathways-based uncertainty analysis. The default is 1.0E-12 barns but this can be set at other values to reduce the computational expense of a simulation (for other options see UNCERTAINTY) or to probe small cross sections. A value of 0 forces all cross sections to be used.

Example usage:

< -- Control phase -- >
...
XSTHRESHOLD 1.0E-15
FISPACT
* Title of the simulation
< -- Initial phase -- >
...
< -- Inventory phase -- >
...