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Forum: Physics List
Re: Question Problem in LElastic Process with LHEP_PRECO_HP physics (John)
Date: 26 Dec, 2004
From: Vladimir IVANTCHENKO <>

On Sun, 26 Dec 2004, John wrote:

> *** Discussion title: Physics List
> Email replies to must include:
>   In-Reply-To: <"/phys-list/117">
>   Subject: ...change this to be about your reply.
> Hi,
> I use Geant4.6.2p01. Thanks for you give us a so good and powerful
> simulation toolkits.
> I want to know the secondaries when proton incident to Silicon. But I
> found that, in LElastic process, something maybe wrong. In my case,
> proton energy is 100MeV. And I found that the LElastic process can
> produce the particles like below:
> Si28[0,0]; Si29[0,0]; Si30[0,0];
> I cannot understand why a proton incident can produce Si30[0,0].
> I use the PhysicsList of LHEP_PRECO_HP.
> the code in SteppingAction is: G4int stepId =
> theTrack->GetCurrentStepNumber(); if (stepId == 1) { //Process Name
> G4String ProcessName=theTrack->GetCreatorProcess()->GetProcessName();
> if ("LElastic")==0) {
>                 //Name;
>                 G4String ParticleName=theTrack->GetDefinition()->GetParticleName();
>                 G4cout<<ParticleName<<G4endl;
> }
> And I use LHEP_PRECO_HP like this:
> runManager->SetUserInitialization(new LHEP_PRECO_HP);
> Is there something wrong? thanks.


By default it is assumed that an element is a natural composition of 
isotopes. Particles which you observe are recoils from elastic scattering 
with very small kinetic energy. All have GenericIon type and names , which 
describe a concrete isotope of silicon.


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1 Question: Re: Problem in LElastic Process with LHEP_PRECO_HP physics   (John - 27 Dec, 2004)
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