ERROR: S(a,b) table lwtr.10t did not match any nuclide on material 3

User Support
1

Hello Every one,
I’m using MCNP cross section data i added MCNP data directory into cross_sections_ascii.xml and i added this directory in my setting.xml file . In my material.xml file im having

</material

all other cross sections tables are being loaded very well , but im getting this error at the end
ERROR: S(a,b) table lwtr.10t did not match any nuclide on material 3

while im using Openmc v 0.8.0 , any idea how to fix this error ???
Thanks
Ahmed K Madani

2

The material you’re defining there looks like heavy water (since it has H-2). If you’re using MCNP data, you’ll need to use the ‘hwtr’ S(a,b) table instead of ‘lwtr’.

Best,
Paul