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Forum: Physics List
Re: Question Recoiled silicon atom? (Cristina Consolandi)
Date: 12 Mar, 2008
From: Vladimir IVANTCHENKO <vnivanch@mail.cern.ch>

On Wed, 12 Mar 2008, Cristina Consolandi wrote:

> *** Discussion title: Physics List
> Email replies to PublicHyperNews@slac.stanford.edu must include:
>   In-Reply-To: <"/phys-list/464"@geant4-hn.slac.stanford.edu>
>   Subject: ...change this to be about your reply.
> 
> Hello, I have to reproduce this simulation:
> 
> incoming particles : protons 100MeV, electrons 100MeV, Carbon ion
> 1GeV/nucleon.
> 
> target material: silicon bulk.
> 
> I want to simulate the scattering process of these particles with the
> crystal atoms of my target.
> 
> Is there a way to know energy, momentum and direction of the recoiled
> silicon atom when it is displaced from it's lattice position?
> 
> May I have some indications of the physics list that I have to
> introduce, or some examples in Geant4.9.0 that have a similar problem?
> 
> Thank you in advance.
> 
> Cri
> 

Hello,

By default Reserford scattering does not provide any recoil, we are using 
multiple scattering approach. To have recoil both from hadron elastic 
scattering and Reserford scattering you need to migrade to G4 9.1 and use 
G4CoulombScattering process instead of G4MulipleScattering. The simulation 
will be time consuming, because each elastic scattering will be simulated 
the example Physics Lists is in 
$G4INSTALL/examples/extended/electromagnetic/TestEm7

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