The prompt neutron spectrum produced by NeutronHP model has a lump at around 18- 21MeV that shouldn't be there. See the URL for the spectrum I was shooting neutrons with energies 2-10MeV to U3O8. U3 was natural Uranium.
*** This bug has been marked as a duplicate of 502 *** *** 'Hans-Peter.Wellisch@cern.ch' will be responsible for this bug. ***