#include <G4PAIPhotModel.hh>

Inheritance diagram for G4PAIPhotModel:

Collaboration diagram for G4PAIPhotModel:

Public Member Functions
	G4PAIPhotModel (const G4ParticleDefinition *p=nullptr, const G4String &nam="PAI")

virtual	~G4PAIPhotModel ()

virtual void	Initialise (const G4ParticleDefinition *, const G4DataVector &) final

virtual void	InitialiseLocal (const G4ParticleDefinition , G4VEmModel masterModel) final

virtual G4double	ComputeDEDXPerVolume (const G4Material , const G4ParticleDefinition , G4double kineticEnergy, G4double cutEnergy) final

virtual G4double	CrossSectionPerVolume (const G4Material , const G4ParticleDefinition , G4double kineticEnergy, G4double cutEnergy, G4double maxEnergy) final

virtual void	SampleSecondaries (std::vector< G4DynamicParticle * > , const G4MaterialCutsCouple , const G4DynamicParticle *, G4double tmin, G4double maxEnergy) final

virtual G4double	SampleFluctuations (const G4MaterialCutsCouple , const G4DynamicParticle , G4double, G4double, G4double) final

virtual G4double	Dispersion (const G4Material , const G4DynamicParticle , G4double, G4double) final

virtual void	DefineForRegion (const G4Region *r) final

G4PAIPhotData *	GetPAIPhotData ()

const std::vector< const G4MaterialCutsCouple * > &	GetVectorOfCouples ()

G4double	ComputeMaxEnergy (G4double scaledEnergy)

void	SetVerboseLevel (G4int verbose)

Public Member Functions inherited from G4VEmModel
	G4VEmModel (const G4String &nam)

virtual	~G4VEmModel ()

virtual void	InitialiseForMaterial (const G4ParticleDefinition , const G4Material )

virtual void	InitialiseForElement (const G4ParticleDefinition *, G4int Z)

virtual G4double	GetPartialCrossSection (const G4Material , G4int level, const G4ParticleDefinition , G4double kineticEnergy)

virtual G4double	ComputeCrossSectionPerAtom (const G4ParticleDefinition *, G4double kinEnergy, G4double Z, G4double A=0., G4double cutEnergy=0.0, G4double maxEnergy=DBL_MAX)

virtual G4double	ComputeCrossSectionPerShell (const G4ParticleDefinition *, G4int Z, G4int shellIdx, G4double kinEnergy, G4double cutEnergy=0.0, G4double maxEnergy=DBL_MAX)

virtual G4double	ChargeSquareRatio (const G4Track &)

virtual G4double	GetChargeSquareRatio (const G4ParticleDefinition , const G4Material , G4double kineticEnergy)

virtual G4double	GetParticleCharge (const G4ParticleDefinition , const G4Material , G4double kineticEnergy)

virtual void	StartTracking (G4Track *)

virtual void	CorrectionsAlongStep (const G4MaterialCutsCouple , const G4DynamicParticle , G4double &eloss, G4double &niel, G4double length)

virtual G4double	Value (const G4MaterialCutsCouple , const G4ParticleDefinition , G4double kineticEnergy)

virtual G4double	MinPrimaryEnergy (const G4Material , const G4ParticleDefinition , G4double cut=0.0)

virtual G4double	MinEnergyCut (const G4ParticleDefinition , const G4MaterialCutsCouple )

virtual void	SetupForMaterial (const G4ParticleDefinition , const G4Material , G4double kineticEnergy)

virtual void	ModelDescription (std::ostream &outFile) const

void	InitialiseElementSelectors (const G4ParticleDefinition *, const G4DataVector &)

std::vector < G4EmElementSelector * > *	GetElementSelectors ()

void	SetElementSelectors (std::vector< G4EmElementSelector * > *)

virtual G4double	ComputeDEDX (const G4MaterialCutsCouple , const G4ParticleDefinition , G4double kineticEnergy, G4double cutEnergy=DBL_MAX)

G4double	CrossSection (const G4MaterialCutsCouple , const G4ParticleDefinition , G4double kineticEnergy, G4double cutEnergy=0.0, G4double maxEnergy=DBL_MAX)

G4double	ComputeMeanFreePath (const G4ParticleDefinition , G4double kineticEnergy, const G4Material , G4double cutEnergy=0.0, G4double maxEnergy=DBL_MAX)

G4double	ComputeCrossSectionPerAtom (const G4ParticleDefinition , const G4Element , G4double kinEnergy, G4double cutEnergy=0.0, G4double maxEnergy=DBL_MAX)

G4int	SelectIsotopeNumber (const G4Element *)

const G4Element *	SelectRandomAtom (const G4MaterialCutsCouple , const G4ParticleDefinition , G4double kineticEnergy, G4double cutEnergy=0.0, G4double maxEnergy=DBL_MAX)

const G4Element *	SelectRandomAtom (const G4Material , const G4ParticleDefinition , G4double kineticEnergy, G4double cutEnergy=0.0, G4double maxEnergy=DBL_MAX)

G4int	SelectRandomAtomNumber (const G4Material *)

void	SetParticleChange (G4VParticleChange , G4VEmFluctuationModel f=nullptr)

void	SetCrossSectionTable (G4PhysicsTable *, G4bool isLocal)

G4ElementData *	GetElementData ()

G4PhysicsTable *	GetCrossSectionTable ()

G4VEmFluctuationModel *	GetModelOfFluctuations ()

G4VEmAngularDistribution *	GetAngularDistribution ()

void	SetAngularDistribution (G4VEmAngularDistribution *)

G4double	HighEnergyLimit () const

G4double	LowEnergyLimit () const

G4double	HighEnergyActivationLimit () const

G4double	LowEnergyActivationLimit () const

G4double	PolarAngleLimit () const

G4double	SecondaryThreshold () const

G4bool	LPMFlag () const

G4bool	DeexcitationFlag () const

G4bool	ForceBuildTableFlag () const

G4bool	UseAngularGeneratorFlag () const

void	SetAngularGeneratorFlag (G4bool)

void	SetHighEnergyLimit (G4double)

void	SetLowEnergyLimit (G4double)

void	SetActivationHighEnergyLimit (G4double)

void	SetActivationLowEnergyLimit (G4double)

G4bool	IsActive (G4double kinEnergy)

void	SetPolarAngleLimit (G4double)

void	SetSecondaryThreshold (G4double)

void	SetLPMFlag (G4bool val)

void	SetDeexcitationFlag (G4bool val)

void	SetForceBuildTable (G4bool val)

void	SetMasterThread (G4bool val)

G4bool	IsMaster () const

G4double	MaxSecondaryKinEnergy (const G4DynamicParticle *dynParticle)

const G4String &	GetName () const

void	SetCurrentCouple (const G4MaterialCutsCouple *)

const G4Element *	GetCurrentElement () const

const G4Isotope *	GetCurrentIsotope () const

G4bool	IsLocked () const

void	SetLocked (G4bool)

Public Member Functions inherited from G4VEmFluctuationModel
	G4VEmFluctuationModel (const G4String &nam)

virtual	~G4VEmFluctuationModel ()

virtual void	InitialiseMe (const G4ParticleDefinition *)

virtual void	SetParticleAndCharge (const G4ParticleDefinition *, G4double q2)

const G4String &	GetName () const

Protected Member Functions
virtual G4double	MaxSecondaryEnergy (const G4ParticleDefinition *, G4double kinEnergy) final

Protected Member Functions inherited from G4VEmModel
G4ParticleChangeForLoss *	GetParticleChangeForLoss ()

G4ParticleChangeForGamma *	GetParticleChangeForGamma ()

const G4MaterialCutsCouple *	CurrentCouple () const

void	SetCurrentElement (const G4Element *)

Additional Inherited Members
Protected Attributes inherited from G4VEmModel
G4ElementData *	fElementData

G4VParticleChange *	pParticleChange

G4PhysicsTable *	xSectionTable

const std::vector< G4double > *	theDensityFactor

const std::vector< G4int > *	theDensityIdx

size_t	idxTable

Static Protected Attributes inherited from G4VEmModel
static const G4double	inveplus = 1.0/CLHEP::eplus

Detailed Description

Definition at line 64 of file G4PAIPhotModel.hh.

Constructor & Destructor Documentation

G4PAIPhotModel::G4PAIPhotModel	(	const G4ParticleDefinition *	p = `nullptr`,
		const G4String &	nam = `"PAI"`
	)

explicit

Definition at line 73 of file G4PAIPhotModel.cc.

   : G4VEmModel(nam),G4VEmFluctuationModel(nam),
     fVerbose(0),
     fModelData(nullptr),
     fParticle(nullptr)
 {  
   fElectron = G4Electron::Electron();
   fPositron = G4Positron::Positron();
 
   fParticleChange = nullptr;
 
   if(p) { SetParticle(p); }
   else  { SetParticle(fElectron); }
 
   // default generator
   SetAngularDistribution(new G4DeltaAngle());
 }

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G4PAIPhotModel::~G4PAIPhotModel ( )

virtual

Definition at line 93 of file G4PAIPhotModel.cc.

 {
   //G4cout << "G4PAIPhotModel::~G4PAIPhotModel() " << this << G4endl;
   if(IsMaster()) { delete fModelData; fModelData = nullptr; }
 }

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Member Function Documentation

G4double G4PAIPhotModel::ComputeDEDXPerVolume	(	const G4Material *	,
		const G4ParticleDefinition *	p,
		G4double	kineticEnergy,
		G4double	cutEnergy
	)

finalvirtual

Reimplemented from G4VEmModel.

Definition at line 196 of file G4PAIPhotModel.cc.

 {
   G4int coupleIndex = FindCoupleIndex(CurrentCouple());
   if(0 > coupleIndex) { return 0.0; }
 
   G4double cut = std::min(MaxSecondaryEnergy(p, kineticEnergy), cutEnergy);
 
   G4double scaledTkin = kineticEnergy*fRatio;
  
   return fChargeSquare*fModelData->DEDXPerVolume(coupleIndex, scaledTkin, cut);
 }

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G4double G4PAIPhotModel::ComputeMaxEnergy ( G4double scaledEnergy )

inline

Definition at line 161 of file G4PAIPhotModel.hh.

 {
   return MaxSecondaryEnergy(fParticle, scaledEnergy/fRatio);
 }

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G4double G4PAIPhotModel::CrossSectionPerVolume	(	const G4Material *	,
		const G4ParticleDefinition *	p,
		G4double	kineticEnergy,
		G4double	cutEnergy,
		G4double	maxEnergy
	)

finalvirtual

Reimplemented from G4VEmModel.

Definition at line 213 of file G4PAIPhotModel.cc.

 {
   G4int coupleIndex = FindCoupleIndex(CurrentCouple());
 
   if(0 > coupleIndex) return 0.0; 
 
   G4double tmax = std::min(MaxSecondaryEnergy(p, kineticEnergy), maxEnergy);
 
   if(tmax <= cutEnergy)  return 0.0; 
 
   G4double scaledTkin = kineticEnergy*fRatio;
   G4double xsc = fChargeSquare*fModelData->CrossSectionPerVolume(coupleIndex, 
                              scaledTkin, 
                              cutEnergy, tmax);
   return xsc;
 }

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void G4PAIPhotModel::DefineForRegion ( const G4Region * r )

finalvirtual

Reimplemented from G4VEmModel.

Definition at line 445 of file G4PAIPhotModel.cc.

 {
   fPAIRegionVector.push_back(r);
 }

G4double G4PAIPhotModel::Dispersion	(	const G4Material *	material,
		const G4DynamicParticle *	aParticle,
		G4double	tmax,
		G4double	step
	)

finalvirtual

Implements G4VEmFluctuationModel.

Definition at line 397 of file G4PAIPhotModel.cc.

 {
   G4double particleMass  = aParticle->GetMass();
   G4double electronDensity = material->GetElectronDensity();
   G4double kineticEnergy = aParticle->GetKineticEnergy();
   G4double q = aParticle->GetCharge()/eplus;
   G4double etot = kineticEnergy + particleMass;
   G4double beta2 = kineticEnergy*(kineticEnergy + 2.0*particleMass)/(etot*etot);
   G4double siga  = (1.0/beta2 - 0.5) * twopi_mc2_rcl2 * tmax * step
                  * electronDensity * q * q;
 
   return siga;
   /*
   G4double loss, sumLoss=0., sumLoss2=0., sigma2, meanLoss=0.;
   for(G4int i = 0; i < fMeanNumber; i++)
   {
     loss      = SampleFluctuations(material,aParticle,tmax,step,meanLoss);
     sumLoss  += loss;
     sumLoss2 += loss*loss;
   }
   meanLoss = sumLoss/fMeanNumber;
   sigma2   = meanLoss*meanLoss + (sumLoss2-2*sumLoss*meanLoss)/fMeanNumber;
   return sigma2;
   */
 }

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G4PAIPhotData * G4PAIPhotModel::GetPAIPhotData ( )

inline

Definition at line 150 of file G4PAIPhotModel.hh.

 {
   return fModelData;
 }

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const std::vector< const G4MaterialCutsCouple * > & G4PAIPhotModel::GetVectorOfCouples ( )

inline

Definition at line 156 of file G4PAIPhotModel.hh.

 {
   return fMaterialCutsCoupleVector;
 }

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void G4PAIPhotModel::Initialise	(	const G4ParticleDefinition *	p,
		const G4DataVector &	cuts
	)

finalvirtual

Implements G4VEmModel.

Definition at line 101 of file G4PAIPhotModel.cc.

 {
   if(fVerbose > 0) 
   {
     G4cout<<"G4PAIPhotModel::Initialise for "<<p->GetParticleName()<<G4endl;
   }
   SetParticle(p);
   fParticleChange = GetParticleChangeForLoss();
 
   if( IsMaster() ) 
   { 
 
     InitialiseElementSelectors(p, cuts);
 
     delete fModelData;
     fMaterialCutsCoupleVector.clear(); 
 
     G4double tmin = LowEnergyLimit()*fRatio;
     G4double tmax = HighEnergyLimit()*fRatio;
     fModelData = new G4PAIPhotData(tmin, tmax, fVerbose);
     
     // Prepare initialization
     const G4MaterialTable* theMaterialTable = G4Material::GetMaterialTable();
     size_t numOfMat   = G4Material::GetNumberOfMaterials();
     size_t numRegions = fPAIRegionVector.size();
 
     // protect for unit tests
     if(0 == numRegions) {
       G4Exception("G4PAIModel::Initialise()","em0106",JustWarning,
                   "no G4Regions are registered for the PAI model - World is used");
       fPAIRegionVector.push_back(G4RegionStore::GetInstance()
                  ->GetRegion("DefaultRegionForTheWorld", false));
       numRegions = 1;
     }
 
     for( size_t iReg = 0; iReg < numRegions; ++iReg ) 
     {
       const G4Region* curReg = fPAIRegionVector[iReg];
       G4Region* reg = const_cast<G4Region*>(curReg);
 
       for(size_t jMat = 0; jMat < numOfMat; ++jMat) 
       {
     G4Material* mat = (*theMaterialTable)[jMat];
     const G4MaterialCutsCouple* cutCouple = reg->FindCouple(mat);
     //G4cout << "Couple <" << fCutCouple << G4endl;
     if(cutCouple) 
         {
       if(fVerbose>0)
       {
         G4cout << "Reg <" <<curReg->GetName() << ">  mat <" 
         << mat->GetName() << ">  fCouple= " 
         << cutCouple << ", idx= " << cutCouple->GetIndex()
         <<"  " << p->GetParticleName() 
         <<", cuts.size() = " << cuts.size() << G4endl;
       }
       // check if this couple is not already initialized
 
       size_t n = fMaterialCutsCoupleVector.size();
 
       G4bool isnew = true;
       if( 0 < n ) 
           {
         for(size_t i=0; i<fMaterialCutsCoupleVector.size(); ++i) 
             {
           if(cutCouple == fMaterialCutsCoupleVector[i]) {
         isnew = false;
         break;
           }
         }
       }
       // initialise data banks
       if(isnew) {
         fMaterialCutsCoupleVector.push_back(cutCouple);
         G4double deltaCutInKinEnergy = cuts[cutCouple->GetIndex()];
         fModelData->Initialise(cutCouple, deltaCutInKinEnergy, this);
       }
     }
       }
     }
   }
 }

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void G4PAIPhotModel::InitialiseLocal	(	const G4ParticleDefinition *	,
		G4VEmModel *	masterModel
	)

finalvirtual

Reimplemented from G4VEmModel.

Definition at line 186 of file G4PAIPhotModel.cc.

 {
   fModelData = static_cast<G4PAIPhotModel*>(masterModel)->GetPAIPhotData();
   fMaterialCutsCoupleVector = static_cast<G4PAIPhotModel*>(masterModel)->GetVectorOfCouples();
   SetElementSelectors( masterModel->GetElementSelectors() );
 }

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G4double G4PAIPhotModel::MaxSecondaryEnergy	(	const G4ParticleDefinition *	p,
		G4double	kinEnergy
	)

finalprotectedvirtual

Reimplemented from G4VEmModel.

Definition at line 428 of file G4PAIPhotModel.cc.

 {
   SetParticle(p);
   G4double tmax = kinEnergy;
   if(p == fElectron) { tmax *= 0.5; }
   else if(p != fPositron) { 
     G4double ratio= electron_mass_c2/fMass;
     G4double gamma= kinEnergy/fMass + 1.0;
     tmax = 2.0*electron_mass_c2*(gamma*gamma - 1.) /
                   (1. + 2.0*gamma*ratio + ratio*ratio);
   }
   return tmax;
 }

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G4double G4PAIPhotModel::SampleFluctuations	(	const G4MaterialCutsCouple *	matCC,
		const G4DynamicParticle *	aParticle,
		G4double	,
		G4double	step,
		G4double	eloss
	)

finalvirtual

Implements G4VEmFluctuationModel.

Definition at line 357 of file G4PAIPhotModel.cc.

 {
   // return 0.;
   G4int coupleIndex = FindCoupleIndex(matCC);
   if(0 > coupleIndex) { return eloss; }
 
   SetParticle(aParticle->GetDefinition());
 
   
   // G4cout << "G4PAIPhotModel::SampleFluctuations step(mm)= "<< step/mm
   // << "  Eloss(keV)= " << eloss/keV  << " in " 
   // << matCC->GetMaterial()->GetName() << G4endl;
   
 
   G4double Tkin       = aParticle->GetKineticEnergy();
   G4double scaledTkin = Tkin*fRatio;
 
   G4double loss = fModelData->SampleAlongStepPhotonTransfer(coupleIndex, Tkin,
                               scaledTkin,
                               step*fChargeSquare);
            loss += fModelData->SampleAlongStepPlasmonTransfer(coupleIndex, Tkin,
                               scaledTkin,
                                   step*fChargeSquare);
 
   
   // G4cout<<"  PAIPhotModel::SampleFluctuations loss = "<<loss/keV<<" keV, on step = "
   // <<step/mm<<" mm"<<G4endl; 
   return loss;
 
 }

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void G4PAIPhotModel::SampleSecondaries	(	std::vector< G4DynamicParticle * > *	vdp,
		const G4MaterialCutsCouple *	matCC,
		const G4DynamicParticle *	dp,
		G4double	tmin,
		G4double	maxEnergy
	)

finalvirtual

Implements G4VEmModel.

Definition at line 239 of file G4PAIPhotModel.cc.

 {
   G4int coupleIndex = FindCoupleIndex(matCC);
   if(0 > coupleIndex) { return; }
 
   SetParticle(dp->GetDefinition());
 
   G4double kineticEnergy = dp->GetKineticEnergy();
 
   G4double tmax = MaxSecondaryEnergy(fParticle, kineticEnergy);
 
   if( maxEnergy <  tmax) tmax = maxEnergy; 
   if( tmin      >= tmax) return; 
 
   G4ThreeVector direction = dp->GetMomentumDirection();
   G4double scaledTkin     = kineticEnergy*fRatio;
   G4double totalEnergy    = kineticEnergy + fMass;
   G4double totalMomentum  = sqrt(kineticEnergy*(totalEnergy + fMass));
   G4double plRatio        = fModelData->GetPlasmonRatio(coupleIndex, scaledTkin);
 
   if( G4UniformRand() <= plRatio )
   {
     G4double deltaTkin = fModelData->SamplePostStepPlasmonTransfer(coupleIndex, scaledTkin);
 
     // G4cout<<"G4PAIPhotModel::SampleSecondaries; dp "<<dp->GetParticleDefinition()->GetParticleName()
     // <<"; Tkin = "<<kineticEnergy/keV<<" keV; transfer = "<<deltaTkin/keV<<" keV "<<G4endl;
 
     if( deltaTkin <= 0. && fVerbose > 0) 
     {
     G4cout<<"G4PAIPhotModel::SampleSecondary e- deltaTkin = "<<deltaTkin<<G4endl;
     }
     if( deltaTkin <= 0.) return; 
 
     if( deltaTkin > tmax) deltaTkin = tmax;
 
     const G4Element* anElement = SelectRandomAtom(matCC,fParticle,kineticEnergy);
     G4int Z = G4lrint(anElement->GetZ());
  
     G4DynamicParticle* deltaRay = new G4DynamicParticle(fElectron, 
         GetAngularDistribution()->SampleDirection(dp, deltaTkin,
                               Z, matCC->GetMaterial()),
                               deltaTkin);
 
     // primary change
 
     kineticEnergy -= deltaTkin;
 
     if( kineticEnergy <= 0. ) // kill primary as local? energy deposition
     {
       fParticleChange->SetProposedKineticEnergy(0.0);
       fParticleChange->ProposeLocalEnergyDeposit(kineticEnergy+deltaTkin);
       // fParticleChange->ProposeTrackStatus(fStopAndKill);
       return; 
     }
     else
     {
       G4ThreeVector dir = totalMomentum*direction - deltaRay->GetMomentum();
       direction = dir.unit();
       fParticleChange->SetProposedKineticEnergy(kineticEnergy);
       fParticleChange->SetProposedMomentumDirection(direction);
       vdp->push_back(deltaRay);
     }
   }
   else // secondary X-ray CR photon
   {
     G4double deltaTkin     = fModelData->SamplePostStepPhotonTransfer(coupleIndex, scaledTkin);
 
     //  G4cout<<"PAIPhotonModel PhotonPostStepTransfer = "<<deltaTkin/keV<<" keV"<<G4endl; 
 
     if( deltaTkin <= 0. )
     {
       G4cout<<"G4PAIPhotonModel::SampleSecondary gamma deltaTkin = "<<deltaTkin<<G4endl;
     }
     if( deltaTkin <= 0.) return;
 
     if( deltaTkin >= kineticEnergy ) // stop primary
     {
       deltaTkin = kineticEnergy;
       kineticEnergy = 0.0;
     }
     G4double costheta = 0.; // G4UniformRand(); // VG: ??? for start only
     G4double sintheta = sqrt((1.+costheta)*(1.-costheta));
 
     //  direction of the 'Cherenkov' photon  
     G4double phi = twopi*G4UniformRand(); 
     G4double dirx = sintheta*cos(phi), diry = sintheta*sin(phi), dirz = costheta;
 
     G4ThreeVector deltaDirection(dirx,diry,dirz);
     deltaDirection.rotateUz(direction);
 
     if( kineticEnergy > 0.) // primary change
     {
       kineticEnergy -= deltaTkin;
       fParticleChange->SetProposedKineticEnergy(kineticEnergy);
     }
     else // stop primary, but pass X-ray CR
     {
       // fParticleChange->ProposeLocalEnergyDeposit(deltaTkin);
       fParticleChange->SetProposedKineticEnergy(0.0);
     }
     // create G4DynamicParticle object for photon ray
  
     G4DynamicParticle* photonRay = new G4DynamicParticle;
     photonRay->SetDefinition( G4Gamma::Gamma() );
     photonRay->SetKineticEnergy( deltaTkin );
     photonRay->SetMomentumDirection(deltaDirection); 
 
     vdp->push_back(photonRay);
   }
   return;
 }

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void G4PAIPhotModel::SetVerboseLevel ( G4int verbose )

inline

Definition at line 166 of file G4PAIPhotModel.hh.

 { 
   fVerbose=verbose; 
 }

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

geant4.10.03.p01/source/processes/electromagnetic/standard/include/G4PAIPhotModel.hh
geant4.10.03.p01/source/processes/electromagnetic/standard/src/G4PAIPhotModel.cc

Public Member Functions

Protected Member Functions

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation