What does J (Hartree-Fock Compton Profile) in openmc.data.IncidentPhoton means? How does it describe compton scattering? And what is the input and the output of this function?
@skyair For a good overview of how Compton profiles are used, I would suggest reading through a technical report by Sood that describes the theory behind Doppler energy broadening for photon incoherent scattering as implemented in MCNP.