G4RPGKPlusInelastic Class Reference

#include <G4RPGKPlusInelastic.hh>

Inheritance diagram for G4RPGKPlusInelastic:

Public Member Functions
	G4RPGKPlusInelastic ()
	~G4RPGKPlusInelastic ()
G4HadFinalState *	ApplyYourself (const G4HadProjectile &aTrack, G4Nucleus &targetNucleus)

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Detailed Description

Definition at line 43 of file G4RPGKPlusInelastic.hh.

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Constructor & Destructor Documentation

G4RPGKPlusInelastic::G4RPGKPlusInelastic

(

)

[inline]

Definition at line 47 of file G4RPGKPlusInelastic.hh.

References G4HadronicInteraction::SetMaxEnergy(), and G4HadronicInteraction::SetMinEnergy().

                          : G4RPGInelastic("G4RPGKPlusInelastic")
    {
      SetMinEnergy( 0.0 );
      SetMaxEnergy( 25.*CLHEP::GeV );
    }

G4RPGKPlusInelastic::~G4RPGKPlusInelastic

(

)

[inline]

Definition at line 53 of file G4RPGKPlusInelastic.hh.

    { }

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Member Function Documentation

G4HadFinalState * G4RPGKPlusInelastic::ApplyYourself	(	const G4HadProjectile &	aTrack,
		G4Nucleus &	targetNucleus
	)			[virtual]

Implements G4HadronicInteraction.

Definition at line 36 of file G4RPGKPlusInelastic.cc.

References G4RPGInelastic::CalculateMomenta(), G4Nucleus::Cinema(), G4Nucleus::EvaporationEffects(), G4cout, G4endl, G4HadProjectile::Get4Momentum(), G4HadProjectile::GetDefinition(), G4DynamicParticle::GetDefinition(), G4ReactionProduct::GetKineticEnergy(), G4HadProjectile::GetKineticEnergy(), G4HadProjectile::GetMaterial(), G4ReactionProduct::GetMomentum(), G4Material::GetName(), G4ParticleDefinition::GetParticleName(), G4ParticleDefinition::GetPDGMass(), G4FastVector< Type, N >::Initialize(), isAlive, G4InuclParticleNames::pp, G4Nucleus::ReturnTargetParticle(), G4HadFinalState::SetEnergyChange(), G4ReactionProduct::SetKineticEnergy(), G4ReactionProduct::SetMomentum(), G4HadFinalState::SetMomentumChange(), G4ReactionProduct::SetSide(), G4HadFinalState::SetStatusChange(), G4RPGInelastic::SetUpChange(), G4HadronicInteraction::theParticleChange, and G4HadronicInteraction::verboseLevel.

{
  const G4HadProjectile *originalIncident = &aTrack;
  if (originalIncident->GetKineticEnergy()<= 0.1*MeV) 
  {
    theParticleChange.SetStatusChange(isAlive);
    theParticleChange.SetEnergyChange(aTrack.GetKineticEnergy());
    theParticleChange.SetMomentumChange(aTrack.Get4Momentum().vect().unit()); 
    return &theParticleChange;      
  }
    
  // create the target particle
    
  G4DynamicParticle *originalTarget = targetNucleus.ReturnTargetParticle();
  G4ReactionProduct targetParticle( originalTarget->GetDefinition() );
    
  if( verboseLevel > 1 )
  {
    const G4Material *targetMaterial = aTrack.GetMaterial();
    G4cout << "G4RPGKPlusInelastic::ApplyYourself called" << G4endl;
    G4cout << "kinetic energy = " << originalIncident->GetKineticEnergy() << "MeV, ";
    G4cout << "target material = " << targetMaterial->GetName() << ", ";
    G4cout << "target particle = " << originalTarget->GetDefinition()->GetParticleName()
           << G4endl;
  }    
  G4ReactionProduct currentParticle( const_cast<G4ParticleDefinition *>(originalIncident->GetDefinition()));
  currentParticle.SetMomentum( originalIncident->Get4Momentum().vect() );
  currentParticle.SetKineticEnergy( originalIncident->GetKineticEnergy() );
    
  // Fermi motion and evaporation
  // As of Geant3, the Fermi energy calculation had not been Done
    
  G4double ek = originalIncident->GetKineticEnergy();
  G4double amas = originalIncident->GetDefinition()->GetPDGMass();
    
  G4double tkin = targetNucleus.Cinema( ek );
  ek += tkin;
  currentParticle.SetKineticEnergy( ek );
  G4double et = ek + amas;
  G4double p = std::sqrt( std::abs((et-amas)*(et+amas)) );
  G4double pp = currentParticle.GetMomentum().mag();
  if( pp > 0.0 )
  {
    G4ThreeVector momentum = currentParticle.GetMomentum();
    currentParticle.SetMomentum( momentum * (p/pp) );
  }
    
  // calculate black track energies
    
  tkin = targetNucleus.EvaporationEffects( ek );
  ek -= tkin;
  currentParticle.SetKineticEnergy( ek );
  et = ek + amas;
  p = std::sqrt( std::abs((et-amas)*(et+amas)) );
  pp = currentParticle.GetMomentum().mag();
  if( pp > 0.0 )
  {
    G4ThreeVector momentum = currentParticle.GetMomentum();
    currentParticle.SetMomentum( momentum * (p/pp) );
  }
    
  G4ReactionProduct modifiedOriginal = currentParticle;
    
  currentParticle.SetSide( 1 ); // incident always goes in forward hemisphere
  targetParticle.SetSide( -1 );  // target always goes in backward hemisphere
  G4bool incidentHasChanged = false;
  G4bool targetHasChanged = false;
  G4bool quasiElastic = false;
  G4FastVector<G4ReactionProduct,GHADLISTSIZE> vec;  // vec will contain the secondary particles
  G4int vecLen = 0;
  vec.Initialize( 0 );
        
  const G4double cutOff = 0.1*MeV;
  if( currentParticle.GetKineticEnergy() > cutOff )
    Cascade( vec, vecLen,
             originalIncident, currentParticle, targetParticle,
             incidentHasChanged, targetHasChanged, quasiElastic );
    
  CalculateMomenta( vec, vecLen,
                    originalIncident, originalTarget, modifiedOriginal,
                    targetNucleus, currentParticle, targetParticle,
                    incidentHasChanged, targetHasChanged, quasiElastic );
   
  SetUpChange( vec, vecLen,
               currentParticle, targetParticle,
               incidentHasChanged );
    
  delete originalTarget;
    
  return &theParticleChange;    
}

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The documentation for this class was generated from the following files:

• G4RPGKPlusInelastic.hh
• G4RPGKPlusInelastic.cc

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