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Forum: Physics List
Re: Question Bremsstrahlung of e- and e+ in physics list (Packaging) (Alain Ferragut)
Date: 18 Jan, 2005
From: Vladimir IVANTCHENKO <vnivanch@mail.cern.ch>

On Tue, 18 Jan 2005, Alain Ferragut wrote:

> *** Discussion title: Physics List
> Email replies to PublicHyperNews@slac.stanford.edu must include:
>   In-Reply-To: <"/phys-list/127"@geant4-hn.slac.stanford.edu>
>   Subject: ...change this to be about your reply.
> 
> Hi, In the Packaging directory delivered with G4.7.0 source code
> (physics_lists), in module G4EMBuilder , the electron and positron
> bremsstrahlung is written as a discrete process. Now, in testEm9
> (extended examples), the e-, e+ bremsstrahlung is written with the
> AddProcess method called with arguments -1,3,3. Is there any difference
> in the bremsstrahlung results when we compare these two methods ?
> 
> Thanks,
> 
>             Alain
> 

Hello,

You are right. Both versions are equivalent for the recent 
releases of the standard package. A minor CPU performance 
improvenment may be in the case when you use EM builders from physicsLists 
directory. 

VI

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