G4QuasiElasticChannel Class Reference

#include <G4QuasiElasticChannel.hh>

Inheritance diagram for G4QuasiElasticChannel:

Public Member Functions
	G4QuasiElasticChannel ()
	~G4QuasiElasticChannel () override
G4double	GetFraction (G4Nucleus &theNucleus, const G4DynamicParticle &thePrimary)
G4KineticTrackVector *	Scatter (G4Nucleus &theNucleus, const G4DynamicParticle &thePrimary)
	G4QuasiElasticChannel (const G4QuasiElasticChannel &)=delete
const G4QuasiElasticChannel &	operator= (const G4QuasiElasticChannel &)=delete
G4bool	operator== (const G4QuasiElasticChannel &) const =delete
G4bool	operator!= (const G4QuasiElasticChannel &) const =delete
Public Member Functions inherited from G4HadronicInteraction
	G4HadronicInteraction (const G4String &modelName="HadronicModel")
virtual	~G4HadronicInteraction ()
virtual G4HadFinalState *	ApplyYourself (const G4HadProjectile &aTrack, G4Nucleus &targetNucleus)
virtual G4double	SampleInvariantT (const G4ParticleDefinition *p, G4double plab, G4int Z, G4int A)
virtual G4bool	IsApplicable (const G4HadProjectile &aTrack, G4Nucleus &targetNucleus)
G4double	GetMinEnergy () const
G4double	GetMinEnergy (const G4Material *aMaterial, const G4Element *anElement) const
void	SetMinEnergy (G4double anEnergy)
void	SetMinEnergy (G4double anEnergy, const G4Element *anElement)
void	SetMinEnergy (G4double anEnergy, const G4Material *aMaterial)
G4double	GetMaxEnergy () const
G4double	GetMaxEnergy (const G4Material *aMaterial, const G4Element *anElement) const
void	SetMaxEnergy (const G4double anEnergy)
void	SetMaxEnergy (G4double anEnergy, const G4Element *anElement)
void	SetMaxEnergy (G4double anEnergy, const G4Material *aMaterial)
G4int	GetVerboseLevel () const
void	SetVerboseLevel (G4int value)
const G4String &	GetModelName () const
void	DeActivateFor (const G4Material *aMaterial)
void	ActivateFor (const G4Material *aMaterial)
void	DeActivateFor (const G4Element *anElement)
void	ActivateFor (const G4Element *anElement)
G4bool	IsBlocked (const G4Material *aMaterial) const
G4bool	IsBlocked (const G4Element *anElement) const
void	SetRecoilEnergyThreshold (G4double val)
G4double	GetRecoilEnergyThreshold () const
virtual const std::pair< G4double, G4double >	GetFatalEnergyCheckLevels () const
virtual std::pair< G4double, G4double >	GetEnergyMomentumCheckLevels () const
void	SetEnergyMomentumCheckLevels (G4double relativeLevel, G4double absoluteLevel)
virtual void	ModelDescription (std::ostream &outFile) const
virtual void	BuildPhysicsTable (const G4ParticleDefinition &)
virtual void	InitialiseModel ()
	G4HadronicInteraction (const G4HadronicInteraction &right)=delete
const G4HadronicInteraction &	operator= (const G4HadronicInteraction &right)=delete
G4bool	operator== (const G4HadronicInteraction &right) const =delete
G4bool	operator!= (const G4HadronicInteraction &right) const =delete

Additional Inherited Members
Protected Member Functions inherited from G4HadronicInteraction
void	SetModelName (const G4String &nam)
G4bool	IsBlocked () const
void	Block ()
Protected Attributes inherited from G4HadronicInteraction
G4HadFinalState	theParticleChange
G4int	verboseLevel
G4double	theMinEnergy
G4double	theMaxEnergy
G4bool	isBlocked

Detailed Description

Definition at line 51 of file G4QuasiElasticChannel.hh.

Constructor & Destructor Documentation

G4QuasiElasticChannel() [1/2]

G4QuasiElasticChannel::G4QuasiElasticChannel ( )

explicit

Definition at line 61 of file G4QuasiElasticChannel.cc.

  : G4HadronicInteraction("QuasiElastic"),
    theQuasiElastic(new G4QuasiElRatios),
    the3DNucleus(new G4Fancy3DNucleus) {
}

~G4QuasiElasticChannel()

G4QuasiElasticChannel::~G4QuasiElasticChannel ( )

override

Definition at line 67 of file G4QuasiElasticChannel.cc.

{
  delete the3DNucleus;
  delete theQuasiElastic;
}

G4QuasiElasticChannel() [2/2]

G4QuasiElasticChannel::G4QuasiElasticChannel ( const G4QuasiElasticChannel &  )

delete

Member Function Documentation

GetFraction()

G4double G4QuasiElasticChannel::GetFraction	(	G4Nucleus &	theNucleus,
		const G4DynamicParticle &	thePrimary
	)

Definition at line 73 of file G4QuasiElasticChannel.cc.

{
    #ifdef debug_scatter   
      G4cout << "G4QuasiElasticChannel:: P=" << thePrimary.GetTotalMomentum()
             << ", pPDG=" << thePrimary.GetDefinition()->GetPDGEncoding()
             << ", Z = "  << theNucleus.GetZ_asInt())
             << ", N = "  << theNucleus.GetN_asInt())
             << ", A = "  << theNucleus.GetA_asInt() << G4endl;
    #endif
 
  std::pair<G4double,G4double> ratios;
  ratios=theQuasiElastic->GetRatios(thePrimary.GetTotalMomentum(),
                                    thePrimary.GetDefinition()->GetPDGEncoding(),
                                    theNucleus.GetZ_asInt(),
                                    theNucleus.GetN_asInt());
    #ifdef debug_scatter   
      G4cout << "G4QuasiElasticChannel::ratios " << ratios.first << " x " <<ratios.second
             << "  = " << ratios.first*ratios.second << G4endl;
    #endif
        
  return ratios.first*ratios.second;
}

Referenced by G4TheoFSGenerator::ApplyYourself().

operator!=()

G4bool G4QuasiElasticChannel::operator!= ( const G4QuasiElasticChannel &  ) const

delete

operator=()

const G4QuasiElasticChannel & G4QuasiElasticChannel::operator= ( const G4QuasiElasticChannel &  )

delete

operator==()

G4bool G4QuasiElasticChannel::operator== ( const G4QuasiElasticChannel &  ) const

delete

Scatter()

G4KineticTrackVector * G4QuasiElasticChannel::Scatter	(	G4Nucleus &	theNucleus,
		const G4DynamicParticle &	thePrimary
	)

Definition at line 97 of file G4QuasiElasticChannel.cc.

{
  G4int A=theNucleus.GetA_asInt();
  G4int Z=theNucleus.GetZ_asInt();
  //   build Nucleus and choose random nucleon to scatter with
  the3DNucleus->Init(theNucleus.GetA_asInt(),theNucleus.GetZ_asInt());
  const std::vector<G4Nucleon>& nucleons=the3DNucleus->GetNucleons();
  G4double targetNucleusMass=the3DNucleus->GetMass();
  G4LorentzVector targetNucleus4Mom(0.,0.,0.,targetNucleusMass);
  G4int index;
  do {
    index=G4lrint((A-1)*G4UniformRand());
  } while (index < 0 || index >= static_cast<G4int>(nucleons.size()));  /* Loop checking, 07.08.2015, A.Ribon */
 
  const G4ParticleDefinition * pDef= nucleons[index].GetDefinition();
 
  G4int resA=A - 1;
  G4int resZ=Z - static_cast<int>(pDef->GetPDGCharge());
  const G4ParticleDefinition* resDef;
  G4double residualNucleusMass;
  if(resZ)
  {
    resDef=G4ParticleTable::GetParticleTable()->GetIonTable()->GetIon(resZ,resA,0);
    residualNucleusMass=resDef->GetPDGMass();
  }
  else {
    resDef=G4Neutron::Neutron();
    residualNucleusMass=resA * G4Neutron::Neutron()->GetPDGMass();
  }
   #ifdef debug_scatter
     G4cout<<"G4QElChan::Scatter: neutron - proton? A ="<<A<<", Z="<<Z<<", projName="
           <<pDef->GetParticleName()<<G4endl;
   #endif
 
  G4LorentzVector pNucleon=nucleons[index].Get4Momentum();
  G4double residualNucleusEnergy=std::sqrt(sqr(residualNucleusMass) +
                                           pNucleon.vect().mag2());
  pNucleon.setE(targetNucleusMass-residualNucleusEnergy);
  G4LorentzVector residualNucleus4Mom=targetNucleus4Mom-pNucleon;
 
  std::pair<G4LorentzVector,G4LorentzVector> result;
 
  result=theQuasiElastic->Scatter(pDef->GetPDGEncoding(),pNucleon,
                                  thePrimary.GetDefinition()->GetPDGEncoding(),
                                  thePrimary.Get4Momentum());
  G4LorentzVector scatteredHadron4Mom;
  if (result.first.e() > 0.)
    scatteredHadron4Mom=result.second;
  else {  //scatter failed
    //G4cout << "Warning - G4QuasiElasticChannel::Scatter no scattering" << G4endl;
    //return 0;       //no scatter
    scatteredHadron4Mom=thePrimary.Get4Momentum();
    residualNucleus4Mom=G4LorentzVector(0.,0.,0.,targetNucleusMass);
    resDef=G4ParticleTable::GetParticleTable()->GetIonTable()->GetIon(Z,A,0);
  }
 
#ifdef debug_scatter
  G4LorentzVector EpConservation=pNucleon+thePrimary.Get4Momentum() 
                                 - result.first - result.second;
  if (   (EpConservation.vect().mag2() > .01*MeV*MeV )
      || (std::abs(EpConservation.e()) > 0.1 * MeV ) ) 
  {
    G4cout << "Warning - G4QuasiElasticChannel::Scatter E-p non conservation : "
           << EpConservation << G4endl;
  }    
#endif
 
  G4KineticTrackVector * ktv = new G4KineticTrackVector();
  G4KineticTrack * sPrim=new G4KineticTrack(thePrimary.GetDefinition(),
                                            0.,G4ThreeVector(0), scatteredHadron4Mom);
  ktv->push_back(sPrim);
  if (result.first.e() > 0.)
  {
    G4KineticTrack * sNuc=new G4KineticTrack(pDef, 0.,G4ThreeVector(0), result.first);
    ktv->push_back(sNuc);
  }
  if(resZ || resA==1) // For the only neutron or for tnuclei with Z>0 
  {
    G4KineticTrack * rNuc=new G4KineticTrack(resDef,
                           0.,G4ThreeVector(0), residualNucleus4Mom);
    ktv->push_back(rNuc);
  }
  else // The residual nucleus consists of only neutrons 
  {
    residualNucleus4Mom/=resA;     // Split 4-mom of A*n system equally
    for(G4int in=0; in<resA; in++) // Loop over neutrons in A*n system.
    {
      G4KineticTrack* rNuc=new G4KineticTrack(resDef,
                           0.,G4ThreeVector(0), residualNucleus4Mom);
      ktv->push_back(rNuc);
    }
  }
#ifdef debug_scatter
  G4cout<<"G4QElC::Scat: Nucleon: "<<result.first <<" mass "<<result.first.mag() << G4endl;
  G4cout<<"G4QElC::Scat: Project: "<<result.second<<" mass "<<result.second.mag()<< G4endl;
#endif
  return ktv;
}

Referenced by G4TheoFSGenerator::ApplyYourself().

---

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

• G4QuasiElasticChannel.hh
• G4QuasiElasticChannel.cc