The hadElastic process of low-energetic particles seems to violate energy conservation. In my simulation I see low-energetic protons and neutrons (e.g 6.7572e-09 MeV) creating a higher-energetic proton (e.g. 1.34535 MeV) in a hadElastic interaction with a hydrogen atom. I am using Geant4v10.2 on scientific Linux. I simulate a proton beam in water using the physicslist QGSP_BIC with emstandard_opt3. The step maximum is 0.5mm and the range cut is 1mm.
Hello, Sorry for the late answer. I just check with the recent Geant4 10.5, that 6.757e-9 MeV neutron does not provide energy non-conservation in the default hadron elastic scattering with QGSP_BIC. I would guess, that the problem was fixed long ago - in the code there is a special treatment for low energy hadronic projectile. VI
