G4RPGPiMinusInelastic Class Reference

#include <G4RPGPiMinusInelastic.hh>

Inheritance diagram for G4RPGPiMinusInelastic:

Public Member Functions
	G4RPGPiMinusInelastic ()
	~G4RPGPiMinusInelastic ()
G4HadFinalState *	ApplyYourself (const G4HadProjectile &aTrack, G4Nucleus &targetNucleus)

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Detailed Description

Definition at line 41 of file G4RPGPiMinusInelastic.hh.

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Constructor & Destructor Documentation

G4RPGPiMinusInelastic::G4RPGPiMinusInelastic

(

)

[inline]

Definition at line 45 of file G4RPGPiMinusInelastic.hh.

                           : G4RPGPionInelastic("RPGPiMinusInelastic")
   {}

G4RPGPiMinusInelastic::~G4RPGPiMinusInelastic

(

)

[inline]

Definition at line 48 of file G4RPGPiMinusInelastic.hh.

   {}

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Member Function Documentation

G4HadFinalState * G4RPGPiMinusInelastic::ApplyYourself	(	const G4HadProjectile &	aTrack,
		G4Nucleus &	targetNucleus
	)			[virtual]

Implements G4HadronicInteraction.

Definition at line 34 of file G4RPGPiMinusInelastic.cc.

References G4RPGInelastic::CalculateMomenta(), G4Nucleus::Cinema(), G4Nucleus::EvaporationEffects(), G4HadProjectile::Get4Momentum(), G4HadProjectile::GetDefinition(), G4DynamicParticle::GetDefinition(), G4HadProjectile::GetKineticEnergy(), G4ParticleDefinition::GetPDGMass(), G4FastVector< Type, N >::Initialize(), isAlive, G4InuclParticleNames::pp, G4Nucleus::ReturnTargetParticle(), G4HadFinalState::SetEnergyChange(), G4HadFinalState::SetMomentumChange(), G4HadFinalState::SetStatusChange(), G4RPGInelastic::SetUpChange(), and G4HadronicInteraction::theParticleChange.

{
  const G4HadProjectile* originalIncident = &aTrack;

  if (originalIncident->GetKineticEnergy()<= 0.1) {
    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() );
    
  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,256> vec;  // vec will contain the secondary particles
  G4int vecLen = 0;
  vec.Initialize( 0 );
    
  const G4double cutOff = 0.1;
  if( currentParticle.GetKineticEnergy() > cutOff )
    InitialCollision(vec, vecLen, currentParticle, targetParticle,
                     incidentHasChanged, targetHasChanged);
    
  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:

• G4RPGPiMinusInelastic.hh
• G4RPGPiMinusInelastic.cc

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