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Forum: Physics List
Re: None changing physics list (Davinder Siwal)
Re: Idea Re: changing physics list (Vladimir Ivanchenko)
Re: Question Re: changing physics list (Davinder Siwal)
Date: 28 Apr, 2010
From: John Allison <John Allison>

Geant4 tells you how much energy is deposited but it is not Geant4's business to say what happens next. In Ge 300 keV produces about 10000 electron-hole pairs - not just electrons but holes also. Anyway, these are not free electrons that Geant4 normally deals with. They diffuse and drift in the electric field inside the Ge and induce electrical signals on the electrodes. As things stand at the moment, it is up to you to write code to do this.

It is conceivable that Geant4 could offer utility routines for producing e-h pairs and introduce tracking of charge carriers in semiconductors. I am interested in this and would be interested to hear from anyone who can devote some effort to incorporating this into Geant4.

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