openmc.data.GeneralEvaporation¶
- class openmc.data.GeneralEvaporation(theta, g, u)[source]¶
General evaporation spectrum given in ENDF MF=5, LF=5 represented as
\[f(E \rightarrow E') = g(E'/\theta(E)) \]- Parameters
theta (openmc.data.Tabulated1D) – Tabulated function of incident neutron energy \(E\)
g (openmc.data.Tabulated1D) – Tabulated function of \(x = E'/\theta(E)\)
u (float) – Constant introduced to define the proper upper limit for the final particle energy such that \(0 \le E' \le E - U\)
- Variables
theta (openmc.data.Tabulated1D) – Tabulated function of incident neutron energy \(E\)
g (openmc.data.Tabulated1D) – Tabulated function of \(x = E'/\theta(E)\)
u (float) – Constant introduced to define the proper upper limit for the final particle energy such that \(0 \le E' \le E - U\)
- classmethod from_endf(file_obj, params)[source]¶
Generate general evaporation spectrum from an ENDF evaluation
- Parameters
file_obj (file-like object) – ENDF file positioned at the start of a section for an energy distribution.
params (list) – List of parameters at the start of the energy distribution that includes the LF value indicating what type of energy distribution is present.
- Returns
General evaporation spectrum
- Return type