openmc.data.CoherentElastic¶
- class openmc.data.CoherentElastic(bragg_edges, factors)[source]¶
Coherent elastic scattering data from a crystalline material
The integrated cross section for coherent elastic scattering from a powdered crystalline material may be represented as:
\[\sigma(E,T) = \frac{1}{E} \sum\limits_{i=1}^{E_i < E} s_i(T) \]where \(s_i(T)\) is proportional the structure factor in [eV-b] at the moderator temperature \(T\) in Kelvin.
- Parameters
bragg_edges (Iterable of float) – Bragg edge energies in eV
factors (Iterable of float) – Partial sum of structure factors, \(\sum\limits_{i=1}^{E_i<E} s_i\)
- Variables
bragg_edges (Iterable of float) – Bragg edge energies in eV
factors (Iterable of float) – Partial sum of structure factors, \(\sum\limits_{i=1}^{E_i<E} s_i\)