|Message: EM Physics or EM Model Physics ?||Not Logged In (login)|
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Hi, In the physics list, I do not understand why there are files such as EMModelPhysics and G4EMModelBuilder. It seems that only EMPhysics and G4EMBuilder are used to define EM processes. in LHEP_PRECO_HP physics list. Is there any connection between these 2 types of files ? I would like to understand because I try to improve my adaptation of the physics list for low energy ionisation processes.
Thank you for your answer,
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