|Message: 2 MeV to 60 MeV protons and electrons in 0.3 bar gas||Not Logged In (login)|
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Hello, I am simulating a gas detector to reconstruct protons and electrons between 0 MeV and 60 MeV (energy) in pure isobutane at a pressure between about 1 bar and 0.2 bar. Should I use specific physic lists as the pressure is not standard? For now, I have in MyDet.cc: G4VUserPhysicsList* physics = new QGSP_BERT(); runManager->SetUserInitialization(physics); I am asking because for some gases (Xenon) at atmospheric pressure electrons and protons have similar energy deposition while when the pressure decreases, their dE/dx become different. I want to believe Geant4 but couldn't find any paper explaining this, the Physics Reference Manual didn't help me either. Thanks a lot for any remark or suggestion. I did not add any attachment as I am not sure that it is necessary here but if you feel so, do not hesitate to ask me. -- Gabriel CHARLES Institut de Physique Nucléaire d'Orsay
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