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None 2 MeV to 60 MeV protons and electrons in 0.3 bar gas 

Forum: Physics List
Date: 10 Mar, 2015
From: Gabriel Charles <Gabriel Charles>

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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1 Idea: Re: 2 MeV to 60 MeV protons and electrons in 0.3 bar gas   (Vladimir Ivanchenko - 10 Mar, 2015)
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