Cross-sections (2020 Planned Features)

[dsawkey]

It may be that the cross section is correct, but the model that calculates reaction products is not producing neutrons for each photonuclear interaction. See the discussion and workaround here, and in the linked bug report.

Understimating neutron flux

Hey everyone, I am using GEANT4 simulation for finding neutron fluxes from various targets when electron beam strikes them. I see a pattern that the value of neutron flux that I am getting through GEANT4 is less than the literature suggests (various work done and published in renowned journals). I am told MC simulations tend to underestimate the absolute values of particle fluxes sometimes by a power of 10. I am not very convinced. Does anyone else face this issue? I am using QGSP_BIC_HP phys…