|Message: Creation of Neutrons for a 1.94MeV Proton beam||Not Logged In (login)|
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I am running a simulation of a Lithium Fluorine target being hit by a 1.94MeV proton beam. In the simulation the created neutrons are recorded then killed through the user stepping functions.
From this interaction i am expecting to see at most a 144keV neutron every 3 million protons or so.
However if I run the QGSP_BERT(_HP) physics list I seem to get spurious results whereby a continuous spectrum of neutron energies is created upto around 1.2MeV, which, given energy conservation etc..., is impossible is it not?!?!
I then tried to use the QGSP_BIC(_HP) physics list which says it has implemented within it a better model for the production of secondaries. When this is run no secondaries are created at all. This physics list is run 'as standard' with no modifications is there something I am doing wrong with this physics list?
Are these models usable at energies close to the reaction threshold? if not does Geant4 provide a means with which to draw in ENDF cross sections?
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