Gabriele Cosmo
129 lines
4.5 KiB
C++
129 lines
4.5 KiB
C++
//
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// ********************************************************************
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// * License and Disclaimer *
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// * *
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// * The Geant4 software is copyright of the Copyright Holders of *
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// * the Geant4 Collaboration. It is provided under the terms and *
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// * conditions of the Geant4 Software License, included in the file *
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// * LICENSE and available at http://cern.ch/geant4/license . These *
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// * include a list of copyright holders. *
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// * *
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// * Neither the authors of this software system, nor their employing *
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// * institutes,nor the agencies providing financial support for this *
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// * work make any representation or warranty, express or implied, *
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// * regarding this software system or assume any liability for its *
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// * use. Please see the license in the file LICENSE and URL above *
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// * for the full disclaimer and the limitation of liability. *
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// * *
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// * This code implementation is the result of the scientific and *
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// * technical work of the GEANT4 collaboration. *
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// * By using, copying, modifying or distributing the software (or *
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// * any work based on the software) you agree to acknowledge its *
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// * use in resulting scientific publications, and indicate your *
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// * acceptance of all terms of the Geant4 Software license. *
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// ********************************************************************
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//
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#ifndef G4ParaFissionModel_h
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#define G4ParaFissionModel_h 1
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#include "G4CompetitiveFission.hh"
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#include "G4ExcitationHandler.hh"
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#include "G4HadronicInteraction.hh"
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#include "G4NucleiProperties.hh"
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//#include "G4ParticleTable.hh"
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// Class Description
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// Final state production model for (based on evaluated data
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// libraries) description of neutron induced fission below 60 MeV;
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// In case you need the fission fragments, use this model.
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// To be used in your physics list in case you need this physics.
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// In this case you want to register an object of this class with
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// the corresponding process.
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class G4ParaFissionModel : public G4HadronicInteraction
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{
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public:
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G4ParaFissionModel()
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{
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SetMinEnergy( 0.0 );
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SetMaxEnergy( 60.*MeV );
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}
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virtual ~G4ParaFissionModel() {};
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virtual G4HadFinalState* ApplyYourself(const G4HadProjectile& aTrack,
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G4Nucleus& theNucleus)
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{
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theParticleChange.Clear();
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theParticleChange.SetStatusChange( stopAndKill );
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theParticleChange.SetEnergyChange( 0.0 );
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// prepare the fragment
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G4int A = theNucleus.GetA_asInt();
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G4int Z = theNucleus.GetZ_asInt();
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G4double nucMass = G4NucleiProperties::GetNuclearMass(A, Z);
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G4int numberOfEx = aTrack.GetDefinition()->GetBaryonNumber();
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G4int numberOfCh = G4int(aTrack.GetDefinition()->GetPDGCharge() + 0.5);
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G4int numberOfHoles = 0;
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A += numberOfEx;
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Z += numberOfCh;
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G4LorentzVector v = aTrack.Get4Momentum() + G4LorentzVector(0.0,0.0,0.0,nucMass);
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G4Fragment anInitialState(A,Z,v);
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anInitialState.SetNumberOfExcitedParticle(numberOfEx,numberOfCh);
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anInitialState.SetNumberOfHoles(0,0);
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// do the fission
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G4FragmentVector * theFissionResult = theFission.BreakUp(anInitialState);
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// deexcite the fission fragments and fill result
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G4int ll = theFissionResult->size();
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for(G4int i=0; i<ll; i++)
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{
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G4ReactionProductVector* theExcitationResult = 0;
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G4Fragment* aFragment = (*theFissionResult)[i];
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if(aFragment->GetExcitationEnergy() > keV)
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{
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theExcitationResult = theHandler.BreakItUp(*aFragment);
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// add secondaries
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for(G4int j = 0; j < G4int(theExcitationResult->size()); j++)
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{
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G4ReactionProduct* rp0 = (*theExcitationResult)[j];
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G4DynamicParticle* p0 =
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new G4DynamicParticle(rp0->GetDefinition(),rp0->GetMomentum());
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theParticleChange.AddSecondary(p0);
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delete rp0;
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}
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delete theExcitationResult;
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}
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else
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{
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// add secondary
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G4DynamicParticle* p0 =
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new G4DynamicParticle(aFragment->GetParticleDefinition(),
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aFragment->GetMomentum());
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theParticleChange.AddSecondary(p0);
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}
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delete aFragment;
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}
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delete theFissionResult;
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return &theParticleChange;
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}
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private:
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G4CompetitiveFission theFission;
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G4ExcitationHandler theHandler;
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G4HadFinalState theParticleChange;
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};
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#endif
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