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Forum: Physics List
Re: Question Neutron into Li6 (Elena Novikova)
Date: 29 Jun, 2006
From: Vladimir IVANTCHENKO <vnivanch@mail.cern.ch>

On Thu, 29 Jun 2006, Jeb wrote:

> *** Discussion title: Physics List
> Email replies to PublicHyperNews@slac.stanford.edu must include:
>   In-Reply-To: <"/phys-list/267"@geant4-hn.slac.stanford.edu>
>   Subject: ...change this to be about your reply.
> 
> Hi, I am shooting low energy neutrons(1 x 10^-8 MeV) into Lithium-6 in
> Geant4 version 6. I am expecting to see triton and alpha particles
> created at least since the cross section is pretty high for that
> process. Can anyone give me a physics list for neutrons or tell me which
> processes are supposed to be turned on in order to get these particles.
> Or if anyone knows that Geant4 doesn't do this particular process, could
> you please let me know, thanks.
> 
> P.S. Here is the physics list that I have right now for neutrons
>    // neutron Physics
>    pManager = G4Neutron::Neutron()->GetProcessManager();
> 
>    // add process
>    G4HadronElasticProcess* thenElasticProcess 
>                          = new G4HadronElasticProcess();
>    G4LElastic* thenElasticModel = new G4LElastic();
>    thenElasticProcess->RegisterMe(thenElasticModel);
>    pManager->AddDiscreteProcess(thenElasticProcess);
> 
>    G4NeutronInelasticProcess* theNeutronInelasticProcess 
>                          = new G4NeutronInelasticProcess(); 
> 
>    G4LENeutronInelastic* theNeutronLEPModel = new G4LENeutronInelastic();
>    G4HENeutronInelastic* theNeutronHEPModel = new G4HENeutronInelastic();
>    theNeutronInelasticProcess->RegisterMe(theNeutronLEPModel);
>    theNeutronInelasticProcess->RegisterMe(theNeutronHEPModel);
>    pManager->AddDiscreteProcess(theNeutronInelasticProcess);
> 
>    G4HadronFissionProcess* thenFission
>                          = new G4HadronFissionProcess();
>    G4LFission* thenFissionModel = new G4LFission();
>    thenFission->RegisterMe(thenFissionModel);
>    pManager->AddDiscreteProcess(thenFission);
> 
>    G4HadronCaptureProcess* thenCapture
>                          = new G4HadronCaptureProcess();
>    G4LCapture* thenCaptureModel = new G4LCapture();
>    thenCapture->RegisterMe(thenCaptureModel);
>    pManager->AddDiscreteProcess(thenCapture);
> 
> 

hello,

The models, which you are using are not applicable at all at such low 
energies. You need HP type PhysicsList.

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