The Thermal Scattering Law Project

Harnessing modern methods for material modeling and high-fidelity thermal scattering evaluations, the Scattering Law Project provides access to nuclear thermal scattering data from fundamental inputs to benchmark testing on key reactor and nuclear criticality materials to inspire and support the next generation of nuclear applications.

Triuranium Octoxide (U3O8)

Triuranium octoxide (U3O8) is a common fuel compound in the nuclear fuel manufacturing cycle and also a preferred, highly stable form of oxidized UO2 used for long-term spent fuel storage. U3O8 was modelled in the alpha phase using ab initio lattice dynamics (AILD) methods using the VASP and PHONON codes with the thermal scattering law (TSL) calculated using FLASSH 1.0. The data files generated for U3O8 are generated for U-235 enrichments of 5%, 10% (LEU+), 19.75% (HALEU), 93% (HEU), 100%, and natural, representing the range of fuel enrichments applied for U3O8 fuel.   

 

Publications

Evaluation of Thermal Neutron Scattering Cross Section of α-U3O8 with Ab Initio Lattice Dynamics

 

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