|Message: Re: Activate PAI from PhysicsList.cc||Not Logged In (login)|
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The code, which is shown cannot work, because you are trying to use methods which do not exist. I would suggest that you use Geant4 10.3p02 or 10.4beta. Use Physics List definition as it is shown in $G4INSTALL/examples/extended/hadronic/Hadr00 and apply following UI command:
/process/em/AddPAIRegion all myregion pai
where "myregion" is a geometry region where you need to activate the PAI model. It is possible to apply it everywhere if type "would". For earlier Geant4 versions this UI command was not yet ready.