openmc.data.PhotonReaction

class openmc.data.PhotonReaction(mt)

Photon-induced reaction

Parameters:

mt (int) – The ENDF MT number for this reaction.

Variables:

• anomalous_real (openmc.data.Tabulated1D) – Real part of the anomalous scattering factor

• anomlaous_imag (openmc.data.Tabulated1D) – Imaginary part of the anomalous scatttering factor

• mt (int) – The ENDF MT number for this reaction.

• scattering_factor (openmc.data.Tabulated1D) – Coherent or incoherent form factor.

• xs (Callable) – Cross section as a function of incident photon energy

classmethod from_ace(ace, mt)

Generate photon reaction from an ACE table

Parameters:

• ace (openmc.data.ace.Table) – ACE table to read from

• mt (int) – The MT value of the reaction to get data for

Returns:

Photon reaction data

Return type:

openmc.data.PhotonReaction

classmethod from_endf(ev, mt)

Generate photon reaction from an ENDF evaluation

Parameters:

• ev (openmc.data.endf.Evaluation) – ENDF photo-atomic interaction data evaluation

• mt (int) – The MT value of the reaction to get data for

Returns:

Photon reaction data

Return type:

openmc.data.PhotonReaction

classmethod from_hdf5(group, mt, energy)

Generate photon reaction from an HDF5 group

Parameters:

• group (h5py.Group) – HDF5 group to read from

• mt (int) – The MT value of the reaction to get data for

• energy (Iterable of float) – arrays of energies at which cross sections are tabulated at

Returns:

Photon reaction data

Return type:

openmc.data.PhotonReaction

to_hdf5(group, energy, Z)

Write photon reaction to an HDF5 group

Parameters:

• group (h5py.Group) – HDF5 group to write to

• energy (Iterable of float) – arrays of energies at which cross sections are tabulated at

• Z (int) – atomic number