depletion chain using ENDF/B-VIII.0

User Support
1

hi

i am using LANL based ENDF/B-VIII.0 library from https://openmc.org/lanl-data-libraries/ and i was wondering if it is possible to create a depletion chain from this library instead of VII.1 ?

i am using ENDF/B-VIII.0 because i have observed significant difference between my VII.1 runs and VIII.0 runs, also VIII results are in agreement with MCNP results (MCNP results used VI.1B data).

or maybe if i can have an input about this difference in solutions (diff in value of keff for example) if currently it is not possible to have depletion chain of VIII.

2

You can use the Chain.from_endf method to create a depletion chain using a collection of 1) endf neutron reaction files 2) endf neutron induced fission yield files, and 3) nuclide decay files. I hope this helps!

3

I put together an ENDF/B-VIII.0 depletion chain (untested). If you do use it, let us know if you run into any issues with it:

https://anl.box.com/s/3r3uizjvzzzgcafzmk2f957mexbut8vp

Before running depletion calculations, please read the caveats section of our user’s guide!

Best,
Paul