#include <G4LivermorePolarizedPhotoElectricGDModel.hh>

Inheritance diagram for G4LivermorePolarizedPhotoElectricGDModel:

Collaboration diagram for G4LivermorePolarizedPhotoElectricGDModel:

Public Member Functions
	G4LivermorePolarizedPhotoElectricGDModel (const G4String &nam="LivermorePolarizedPhotoElectric")

virtual	~G4LivermorePolarizedPhotoElectricGDModel ()

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

virtual G4double	ComputeCrossSectionPerAtom (const G4ParticleDefinition *, G4double kinEnergy, G4double Z, G4double A=0, G4double cut=0, G4double emax=DBL_MAX)

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

virtual void	InitialiseForElement (const G4ParticleDefinition *, G4int Z)

void	SetLimitNumberOfShells (G4int)

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

virtual	~G4VEmModel ()

virtual void	InitialiseLocal (const G4ParticleDefinition , G4VEmModel masterModel)

virtual void	InitialiseForMaterial (const G4ParticleDefinition , const G4Material )

virtual G4double	ComputeDEDXPerVolume (const G4Material , const G4ParticleDefinition , G4double kineticEnergy, G4double cutEnergy=DBL_MAX)

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

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

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	DefineForRegion (const G4Region *)

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

void	InitialiseElementSelectors (const G4ParticleDefinition *, const G4DataVector &)

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

void	SetElementSelectors (std::vector< G4EmElementSelector > )

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=0)

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)

Protected Attributes
G4ParticleChangeForGamma *	fParticleChange

Protected Attributes inherited from G4VEmModel
G4ElementData *	fElementData

G4VParticleChange *	pParticleChange

G4PhysicsTable *	xSectionTable

const std::vector< G4double > *	theDensityFactor

const std::vector< G4int > *	theDensityIdx

size_t	idxTable

Private Member Functions
void	ReadData (G4int Z, const char *path=0)

G4LivermorePolarizedPhotoElectricGDModel &	operator= (const G4LivermorePolarizedPhotoElectricGDModel &right)

	G4LivermorePolarizedPhotoElectricGDModel (const G4LivermorePolarizedPhotoElectricGDModel &)

G4ThreeVector	GetRandomPolarization (G4ThreeVector &direction0)

G4ThreeVector	GetPerpendicularPolarization (const G4ThreeVector &direction0, const G4ThreeVector &polarization0) const

G4ThreeVector	SetPerpendicularVector (G4ThreeVector &a)

G4ThreeVector	SetNewPolarization (G4double epsilon, G4double sinSqrTheta, G4double phi, G4double cosTheta)

G4double	SetPhi (G4double, G4double, G4double)

G4double	SetCosTheta (G4double)

void	SystemOfRefChange (G4ThreeVector &direction0, G4ThreeVector &direction1, G4ThreeVector &polarization0)

Private Attributes
G4ParticleDefinition *	theGamma

G4ParticleDefinition *	theElectron

G4int	verboseLevel

G4int	maxZ

G4int	nShellLimit

G4bool	fDeexcitationActive

G4bool	isInitialised

G4VAtomDeexcitation *	fAtomDeexcitation

G4double	fCurrSection

std::vector< G4double >	fSandiaCof

Static Private Attributes
static G4LPhysicsFreeVector *	fCrossSection [99] = {nullptr}

static G4LPhysicsFreeVector *	fCrossSectionLE [99] = {nullptr}

static std::vector< G4double > *	fParam [99] = {0}

static G4int	fNShells [99] = {0}

static G4int	fNShellsUsed [99] = {0}

static G4ElementData *	fShellCrossSection = nullptr

static G4Material *	fWater = nullptr

static G4double	fWaterEnergyLimit = 0.0

Additional Inherited Members
Protected Member Functions inherited from G4VEmModel
G4ParticleChangeForLoss *	GetParticleChangeForLoss ()

G4ParticleChangeForGamma *	GetParticleChangeForGamma ()

virtual G4double	MaxSecondaryEnergy (const G4ParticleDefinition *, G4double kineticEnergy)

const G4MaterialCutsCouple *	CurrentCouple () const

void	SetCurrentElement (const G4Element *)

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

Detailed Description

Definition at line 43 of file G4LivermorePolarizedPhotoElectricGDModel.hh.

Constructor & Destructor Documentation

◆ G4LivermorePolarizedPhotoElectricGDModel() [1/2]

G4LivermorePolarizedPhotoElectricGDModel::G4LivermorePolarizedPhotoElectricGDModel ( const G4String & nam = "LivermorePolarizedPhotoElectric" )

Definition at line 60 of file G4LivermorePolarizedPhotoElectricGDModel.cc.

   :G4VEmModel(nam),fParticleChange(nullptr),maxZ(99),
    nShellLimit(100), fDeexcitationActive(false), isInitialised(false), 
    fAtomDeexcitation(nullptr)
 {
   verboseLevel= 0;
   // Verbosity scale:
   // 0 = nothing 
   // 1 = warning for energy non-conservation 
   // 2 = details of energy budget
   // 3 = calculation of cross sections, file openings, sampling of atoms
   // 4 = entering in methods
 
   theGamma    = G4Gamma::Gamma();
   theElectron = G4Electron::Electron();
 
   SetDeexcitationFlag(true);
   fSandiaCof.resize(4,0.0);
   fCurrSection = 0.0;
   
   if (verboseLevel > 0) {
     G4cout << "Livermore Polarized PhotoElectric is constructed " 
        << " nShellLimit "
        << nShellLimit << G4endl;
   }
 }

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◆ ~G4LivermorePolarizedPhotoElectricGDModel()

G4LivermorePolarizedPhotoElectricGDModel::~G4LivermorePolarizedPhotoElectricGDModel ( )

virtual

Definition at line 90 of file G4LivermorePolarizedPhotoElectricGDModel.cc.

 {  
   if(IsMaster()) {
     delete fShellCrossSection;
     for(G4int i=0; i<maxZ; ++i) { 
       delete fParam[i];
       fParam[i] = 0;
       delete fCrossSection[i];
       fCrossSection[i] = 0;
       delete fCrossSectionLE[i];
       fCrossSectionLE[i] = 0;
     }
   }
 }

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◆ G4LivermorePolarizedPhotoElectricGDModel() [2/2]

G4LivermorePolarizedPhotoElectricGDModel::G4LivermorePolarizedPhotoElectricGDModel ( const G4LivermorePolarizedPhotoElectricGDModel & )

private

Member Function Documentation

◆ ComputeCrossSectionPerAtom()

G4double G4LivermorePolarizedPhotoElectricGDModel::ComputeCrossSectionPerAtom	(	const G4ParticleDefinition *	,
		G4double	kinEnergy,
		G4double	Z,
		G4double	A = `0`,
		G4double	cut = `0`,
		G4double	emax = `DBL_MAX`
	)

virtual

Reimplemented from G4VEmModel.

Definition at line 170 of file G4LivermorePolarizedPhotoElectricGDModel.cc.

 {
   if (verboseLevel > 3) {
     G4cout << "G4LivermorePolarizedPhotoElectricGDModel::ComputeCrossSectionPerAtom():" 
        << " Z= " << ZZ << "  R(keV)= " << GammaEnergy/keV << G4endl;
   }
   G4double cs = 0.0;
   G4int Z = G4lrint(ZZ);
   if(Z < 1 || Z >= maxZ) { return cs; }
   
   // if element was not initialised
   // do initialisation safely for MT mode
   if(!fCrossSection[Z]) {
     InitialiseForElement(0, Z);
     if(!fCrossSection[Z]) { return cs; }
   }
   
   G4int idx = fNShells[Z]*6 - 4;
   if (GammaEnergy < (*(fParam[Z]))[idx-1]) { GammaEnergy = (*(fParam[Z]))[idx-1]; }
   
   G4double x1 = 1.0/GammaEnergy;
   G4double x2 = x1*x1;
   G4double x3 = x2*x1;
   
   // parameterisation
   if(GammaEnergy >= (*(fParam[Z]))[0]) {
     G4double x4 = x2*x2;
     cs = x1*((*(fParam[Z]))[idx] + x1*(*(fParam[Z]))[idx+1]
          + x2*(*(fParam[Z]))[idx+2] + x3*(*(fParam[Z]))[idx+3] 
          + x4*(*(fParam[Z]))[idx+4]);
     // high energy part
   } else if (GammaEnergy >= (*(fParam[Z]))[1]) {
     cs = x3*(fCrossSection[Z])->Value(GammaEnergy);
     
     // low energy part
   } else {
     cs = x3*(fCrossSectionLE[Z])->Value(GammaEnergy);
   }
   if (verboseLevel > 1) { 
     G4cout << "LivermorePolarizedPhotoElectricGDModel: E(keV)= " << GammaEnergy/keV
            << " Z= " << Z << " cross(barn)= " << cs/barn << G4endl;
   }
   return cs;
 }

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◆ GetPerpendicularPolarization()

G4ThreeVector G4LivermorePolarizedPhotoElectricGDModel::GetPerpendicularPolarization	(	const G4ThreeVector &	direction0,
		const G4ThreeVector &	polarization0
	)		const

private

Definition at line 700 of file G4LivermorePolarizedPhotoElectricGDModel.cc.

 {
   
   // 
   // The polarization of a photon is always perpendicular to its momentum direction.
   // Therefore this function removes those vector component of gammaPolarization, which
   // points in direction of gammaDirection
   //
 
   // Mathematically we search the projection of the vector a on the plane E, where n is the
      // plains normal vector.
      // The basic equation can be found in each geometry book (e.g. Bronstein):
      // p = a - (a o n)/(n o n)*n
    
   return gammaPolarization - gammaPolarization.dot(gammaDirection)/gammaDirection.dot(gammaDirection) * gammaDirection;  
 
 }

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◆ GetRandomPolarization()

G4ThreeVector G4LivermorePolarizedPhotoElectricGDModel::GetRandomPolarization ( G4ThreeVector & direction0 )

private

Definition at line 674 of file G4LivermorePolarizedPhotoElectricGDModel.cc.

 {
   G4ThreeVector d0 = direction0.unit();
   G4ThreeVector a1 = SetPerpendicularVector(d0); //different orthogonal
   G4ThreeVector a0 = a1.unit(); // unit vector
   
   G4double rand1 = G4UniformRand();
   
   G4double angle = twopi*rand1; // random polar angle
   G4ThreeVector b0 = d0.cross(a0); // cross product
   
   G4ThreeVector c;
   
   c.setX(std::cos(angle)*(a0.x())+std::sin(angle)*b0.x());
   c.setY(std::cos(angle)*(a0.y())+std::sin(angle)*b0.y());
   c.setZ(std::cos(angle)*(a0.z())+std::sin(angle)*b0.z());
   
   G4ThreeVector c0 = c.unit();
   
   return c0;
   
 }

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◆ Initialise()

void G4LivermorePolarizedPhotoElectricGDModel::Initialise	(	const G4ParticleDefinition *	,
		const G4DataVector &
	)

virtual

Implements G4VEmModel.

Definition at line 108 of file G4LivermorePolarizedPhotoElectricGDModel.cc.

 {
   if (verboseLevel > 2) {
     G4cout << "Calling G4LivermorePolarizedPhotoElectricGDModel::Initialise()" << G4endl;
   }
 
   if(IsMaster()) {
     
     if(!fWater) { 
       fWater = G4Material::GetMaterial("G4_WATER", false); 
       if(fWater) { fWaterEnergyLimit = 13.6*eV; }
     }
     
     if(!fShellCrossSection) { fShellCrossSection = new G4ElementData(); }
     
     char* path = getenv("G4LEDATA");
     
     G4ProductionCutsTable* theCoupleTable =
       G4ProductionCutsTable::GetProductionCutsTable();
     G4int numOfCouples = theCoupleTable->GetTableSize();
     
     for(G4int i=0; i<numOfCouples; ++i) {
       const G4MaterialCutsCouple* couple = 
     theCoupleTable->GetMaterialCutsCouple(i);
       const G4Material* material = couple->GetMaterial();
       const G4ElementVector* theElementVector = material->GetElementVector();
       G4int nelm = material->GetNumberOfElements();
       
       for (G4int j=0; j<nelm; ++j) {        
     G4int Z = (G4int)(*theElementVector)[j]->GetZ();
     if(Z < 1)          { Z = 1; }
     else if(Z > maxZ)  { Z = maxZ; }
     if(!fCrossSection[Z]) { ReadData(Z, path); }
       }
     }
   }  
   //  
   if (verboseLevel > 2) {
     G4cout << "Loaded cross section files for LivermorePhotoElectric model" 
        << G4endl;
   }
   if(!isInitialised) {
     isInitialised = true;
     fParticleChange = GetParticleChangeForGamma();
     
     fAtomDeexcitation = G4LossTableManager::Instance()->AtomDeexcitation();
   }
   fDeexcitationActive = false;
   if(fAtomDeexcitation) { 
     fDeexcitationActive = fAtomDeexcitation->IsFluoActive(); 
   }
   
   if (verboseLevel > 0) { 
     G4cout << "LivermorePolarizedPhotoElectric model is initialized " << G4endl
        << G4endl;
   }
 }

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◆ InitialiseForElement()

void G4LivermorePolarizedPhotoElectricGDModel::InitialiseForElement	(	const G4ParticleDefinition *	,
		G4int	Z
	)

virtual

Reimplemented from G4VEmModel.

Definition at line 745 of file G4LivermorePolarizedPhotoElectricGDModel.cc.

 {
   G4AutoLock l(&LivermorePolarizedPhotoElectricGDModelMutex);
   //  G4cout << "G4LivermorePhotoElectricModel::InitialiseForElement Z= " 
   //   << Z << G4endl;
   if(!fCrossSection[Z]) { ReadData(Z); }
   l.unlock();
 }

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◆ operator=()

G4LivermorePolarizedPhotoElectricGDModel& G4LivermorePolarizedPhotoElectricGDModel::operator= ( const G4LivermorePolarizedPhotoElectricGDModel & right )

private

◆ ReadData()

void G4LivermorePolarizedPhotoElectricGDModel::ReadData	(	G4int	Z,
		const char *	path = `0`
	)

private

Definition at line 432 of file G4LivermorePolarizedPhotoElectricGDModel.cc.

 {
   if (verboseLevel > 1) 
     {
       G4cout << "Calling ReadData() of G4LivermorePolarizedPhotoElectricGDModel" 
          << G4endl;
     }
   
   if(fCrossSection[Z]) { return; }
   
   const char* datadir = path;
   
   if(!datadir) 
     {
       datadir = getenv("G4LEDATA");
       if(!datadir) 
     {
       G4Exception("G4LivermorePhotoElectricModel::ReadData()",
               "em0006",FatalException,
               "Environment variable G4LEDATA not defined");
       return;
     }
     }
   
   // spline for photoeffect total x-section above K-shell
   fCrossSection[Z] = new G4LPhysicsFreeVector();
   fCrossSection[Z]->SetSpline(true);
   
   std::ostringstream ost;
   ost << datadir << "/livermore/phot/pe-cs-" << Z <<".dat";
   std::ifstream fin(ost.str().c_str());
   if( !fin.is_open()) {
     G4ExceptionDescription ed;
     ed << "G4LivermorePolarizedPhotoElectricGDModel data file <" << ost.str().c_str()
        << "> is not opened!" << G4endl;
     G4Exception("G4LivermorePolarizedPhotoElectricGDModel::ReadData()",
         "em0003",FatalException,
         ed,"G4LEDATA version should be G4EMLOW6.32 or later.");
     return;
   } else {
     if(verboseLevel > 3) { G4cout << "File " << ost.str().c_str() 
                   << " is opened by G4LivermorePolarizedPhotoElectricGDModel" << G4endl;}
     fCrossSection[Z]->Retrieve(fin, true);
     fCrossSection[Z]->ScaleVector(MeV, barn);
     fin.close();
   }
   
   fParam[Z] = new std::vector<G4double>;
   
   // read fit parameters
   G4int n1 = 0;
   G4int n2 = 0;
   G4double x;
   std::ostringstream ost1;
   ost1 << datadir << "/livermore/phot/pe-" << Z <<".dat";
   std::ifstream fin1(ost1.str().c_str());
   if( !fin1.is_open()) {
     G4ExceptionDescription ed;
     ed << "G4LivermorePolarizedPhotoElectricGDModel data file <" << ost1.str().c_str()
        << "> is not opened!" << G4endl;
     G4Exception("G4LivermorePolarizedPhotoElectricGDModel::ReadData()",
         "em0003",FatalException,
         ed,"G4LEDATA version should be G4EMLOW6.32 or later.");
     return;
   } else {
     if(verboseLevel > 3) { 
       G4cout << "File " << ost1.str().c_str()
          << " is opened by G4LivermorePolarizedPhotoElectricGDModel" << G4endl;
     }
     fin1 >> n1;
     if(fin1.fail()) { return; }
     if(0 > n1 || n1 >= INT_MAX) { n1 = 0; }
     
     fin1 >> n2;
     if(fin1.fail()) { return; }
     if(0 > n2 || n2 >= INT_MAX) { n2 = 0; }
     
     fin1 >> x;
     if(fin1.fail()) { return; }
     
     fNShells[Z] = n1;
     fParam[Z]->reserve(6*n1+1);
     fParam[Z]->push_back(x*MeV);
     for(G4int i=0; i<n1; ++i) {
       for(G4int j=0; j<6; ++j) {
         fin1 >> x;
     if(0 == j) { x *= MeV; }
     else       { x *= barn; }
         fParam[Z]->push_back(x);
       }
     }
     fin1.close();
   }
   // there is a possibility to used only main shells
   if(nShellLimit < n2) { n2 = nShellLimit; }
   fShellCrossSection->InitialiseForComponent(Z, n2);
   fNShellsUsed[Z] = n2;
   
   if(1 < n2) {
     std::ostringstream ost2;
     ost2 << datadir << "/livermore/phot/pe-ss-cs-" << Z <<".dat";
     std::ifstream fin2(ost2.str().c_str());
     if( !fin2.is_open()) {
       G4ExceptionDescription ed;
       ed << "G4LivermorePolarizedPhotoElectricGDModel data file <" << ost2.str().c_str()
      << "> is not opened!" << G4endl;
       G4Exception("G4LivermorePolarizedPhotoElectricGDModel::ReadData()",
           "em0003",FatalException,
           ed,"G4LEDATA version should be G4EMLOW6.32 or later.");
       return;
     } else {
       if(verboseLevel > 3) { 
     G4cout << "File " << ost2.str().c_str()
            << " is opened by G4LivermorePolarizedPhotoElectricGDModel" << G4endl;
       }
       
       G4int n3, n4;
       G4double y;
       for(G4int i=0; i<n2; ++i) {
     fin2 >> x >> y >> n3 >> n4;
     G4LPhysicsFreeVector* v = new G4LPhysicsFreeVector(n3, x, y);
     for(G4int j=0; j<n3; ++j) {
       fin2 >> x >> y;
       v->PutValues(j, x*MeV, y*barn);
     }
     fShellCrossSection->AddComponent(Z, n4, v);
       }
       fin2.close();
     }
   }
   
   // no spline for photoeffect total x-section below K-shell
   if(1 < fNShells[Z]) {
     fCrossSectionLE[Z] = new G4LPhysicsFreeVector();
     
     std::ostringstream ost3;
     ost3 << datadir << "/livermore/phot/pe-le-cs-" << Z <<".dat";
     std::ifstream fin3(ost3.str().c_str());
     if( !fin3.is_open()) {
       G4ExceptionDescription ed;
       ed << "G4LivermorePolarizedPhotoElectricGDModel data file <" << ost3.str().c_str()
          << "> is not opened!" << G4endl;
       G4Exception("G4LivermorePolarizedPhotoElectricGDModel::ReadData()",
           "em0003",FatalException,
           ed,"G4LEDATA version should be G4EMLOW6.32 or later.");
       return;
     } else {
       if(verboseLevel > 3) { 
         G4cout << "File " << ost3.str().c_str() 
            << " is opened by G4LivermorePolarizedPhotoElectricGDModel" << G4endl;
       }
       fCrossSectionLE[Z]->Retrieve(fin3, true);
       fCrossSectionLE[Z]->ScaleVector(MeV, barn);
       fin3.close();
     }
   }
 }

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◆ SampleSecondaries()

void G4LivermorePolarizedPhotoElectricGDModel::SampleSecondaries	(	std::vector< G4DynamicParticle >	fvect,
		const G4MaterialCutsCouple *	couple,
		const G4DynamicParticle *	aDynamicGamma,
		G4double	tmin,
		G4double	maxEnergy
	)

virtual

Implements G4VEmModel.

Definition at line 222 of file G4LivermorePolarizedPhotoElectricGDModel.cc.

 {
   if (verboseLevel > 3) {
     G4cout << "Calling SampleSecondaries() of G4LivermorePolarizedPhotoElectricGDModel" 
        << G4endl;
   }
 
    G4double photonEnergy = aDynamicGamma->GetKineticEnergy();
   if (verboseLevel > 3) {
     G4cout << "G4LivermorePolarizedPhotoElectricGDModel::SampleSecondaries() Egamma(keV)= "
        << photonEnergy/keV << G4endl;
   }
   
   G4ThreeVector gammaPolarization0 = aDynamicGamma->GetPolarization();  
   G4ThreeVector photonDirection = aDynamicGamma->GetMomentumDirection();
   
   // kill incident photon
   fParticleChange->ProposeTrackStatus(fStopAndKill);   
   fParticleChange->SetProposedKineticEnergy(0.);
   
   // low-energy photo-effect in water - full absorption
 
   const G4Material* material = couple->GetMaterial();
   if(fWater && (material == fWater || 
         material->GetBaseMaterial() == fWater)) {
     if(photonEnergy <= fWaterEnergyLimit) { 
       fParticleChange->ProposeLocalEnergyDeposit(photonEnergy);      
       return;
     }
   }   
 
   // Protection: a polarisation parallel to the
   // direction causes problems;
   // in that case find a random polarization
   
   // Make sure that the polarization vector is perpendicular to the
   // gamma direction. If not
   
   if(!(gammaPolarization0.isOrthogonal(photonDirection, 1e-6))||(gammaPolarization0.mag()==0))
     { // only for testing now
       gammaPolarization0 = GetRandomPolarization(photonDirection);
     }
   else
     {
       if ( gammaPolarization0.howOrthogonal(photonDirection) != 0)
     {
       gammaPolarization0 = GetPerpendicularPolarization(photonDirection, gammaPolarization0);
     }
     }
   
   // End of Protection
   
   //  G4double E0_m = photonEnergy / electron_mass_c2 ;
 
   // Shell 
 
   // Select randomly one element in the current material
   //G4cout << "Select random atom Egamma(keV)= " << photonEnergy/keV << G4endl;
   const G4Element* elm = SelectRandomAtom(material, theGamma, photonEnergy);
   G4int Z = G4lrint(elm->GetZ());
 
 
   // Select the ionised shell in the current atom according to shell 
   //   cross sections
   // G4cout << "Select random shell Z= " << Z << G4endl;
   
   if(Z >= maxZ) { Z = maxZ-1; }
   
   // element was not initialised gamma should be absorbed
   if(!fCrossSection[Z]) {
     fParticleChange->ProposeLocalEnergyDeposit(photonEnergy);
     return;
   }
   
   // shell index
   size_t shellIdx = 0;
   size_t nn = fNShellsUsed[Z];
   
   if(nn > 1) {
     if(photonEnergy >= (*(fParam[Z]))[0]) {
       G4double x1 = 1.0/photonEnergy;
       G4double x2 = x1*x1;
       G4double x3 = x2*x1;
       G4double x4 = x3*x1;
       G4int idx   = nn*6 - 4;
       // when do sampling common factors are not taken into account
       // so cross section is not real
       G4double cs0 = G4UniformRand()*((*(fParam[Z]))[idx] 
                       + x1*(*(fParam[Z]))[idx+1]
                       + x2*(*(fParam[Z]))[idx+2] 
                       + x3*(*(fParam[Z]))[idx+3] 
                       + x4*(*(fParam[Z]))[idx+4]);
       for(shellIdx=0; shellIdx<nn; ++shellIdx) {
     idx = shellIdx*6 + 2;
     if(photonEnergy > (*(fParam[Z]))[idx-1]) {
       G4double cs = (*(fParam[Z]))[idx] + x1*(*(fParam[Z]))[idx+1] 
         + x2*(*(fParam[Z]))[idx+2] + x3*(*(fParam[Z]))[idx+3] 
         + x4*(*(fParam[Z]))[idx+4];
       if(cs >= cs0) { break; }
     }
       }
       if(shellIdx >= nn) { shellIdx = nn-1; }
       
     } else {
       
       // when do sampling common factors are not taken into account
       // so cross section is not real
       G4double cs = G4UniformRand();
       
       if(photonEnergy >= (*(fParam[Z]))[1]) {
     cs *= (fCrossSection[Z])->Value(photonEnergy);
       } else {
     cs *= (fCrossSectionLE[Z])->Value(photonEnergy);
       }
       
       for(size_t j=0; j<nn; ++j) {
     shellIdx = (size_t)fShellCrossSection->GetComponentID(Z, j);
     if(photonEnergy > (*(fParam[Z]))[6*shellIdx+1]) {
       cs -= fShellCrossSection->GetValueForComponent(Z, j, photonEnergy);
     }
     if(cs <= 0.0 || j+1 == nn) { break; }
       }
     }
   }
   
   G4double bindingEnergy = (*(fParam[Z]))[shellIdx*6 + 1];
   //G4cout << "Z= " << Z << " shellIdx= " << shellIdx 
   //       << " nShells= " << fNShells[Z] 
   //       << " Ebind(keV)= " << bindingEnergy/keV 
   //       << " Egamma(keV)= " << photonEnergy/keV << G4endl;
   
   const G4AtomicShell* shell = 0;
   
   // no de-excitation from the last shell
   if(fDeexcitationActive && shellIdx + 1 < nn) {
     G4AtomicShellEnumerator as = G4AtomicShellEnumerator(shellIdx);
     shell = fAtomDeexcitation->GetAtomicShell(Z, as);
   }
   
   // If binding energy of the selected shell is larger than photon energy
   //    do not generate secondaries
   if(photonEnergy < bindingEnergy) {
     fParticleChange->ProposeLocalEnergyDeposit(photonEnergy);
     return;
   }
 
 
   // Electron 
   
   G4double eKineticEnergy = photonEnergy - bindingEnergy;
   G4double edep = bindingEnergy;
   
   G4double costheta = SetCosTheta(eKineticEnergy);
   G4double sintheta = sqrt(1. - costheta*costheta);
   G4double phi = SetPhi(photonEnergy,eKineticEnergy,costheta);
   G4double dirX = sintheta*cos(phi);
   G4double dirY = sintheta*sin(phi);
   G4double dirZ = costheta;
   G4ThreeVector electronDirection(dirX, dirY, dirZ);
   SystemOfRefChange(photonDirection, electronDirection, gammaPolarization0);
   G4DynamicParticle* electron = new G4DynamicParticle (G4Electron::Electron(), 
                                electronDirection, 
                                eKineticEnergy);
   fvect->push_back(electron);
   
   // Deexcitation
   //  Sample deexcitation
   if(shell) {
     G4int index = couple->GetIndex();
     if(fAtomDeexcitation->CheckDeexcitationActiveRegion(index)) {
       G4int nbefore = fvect->size();
       
       fAtomDeexcitation->GenerateParticles(fvect, shell, Z, index);
       G4int nafter = fvect->size();
       if(nafter > nbefore) {
     G4double esec = 0.0;
     for (G4int j=nbefore; j<nafter; ++j) {
       
       G4double e = ((*fvect)[j])->GetKineticEnergy();
       if(esec + e > edep) {
         // correct energy in order to have energy balance
             e = edep - esec;
         ((*fvect)[j])->SetKineticEnergy(e);
         esec += e;
         // delete the rest of secondaries (should not happens)
             for (G4int jj=nafter-1; jj>j; --jj) { 
               delete (*fvect)[jj]; 
               fvect->pop_back(); 
             }
         break;        
       }
       esec += e; 
     }
     edep -= esec;
       }
     }
   }
   // energy balance - excitation energy left
   if(edep > 0.0) {
     fParticleChange->ProposeLocalEnergyDeposit(edep);
   }
 }

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◆ SetCosTheta()

G4double G4LivermorePolarizedPhotoElectricGDModel::SetCosTheta ( G4double energyE )

private

Definition at line 593 of file G4LivermorePolarizedPhotoElectricGDModel.cc.

 {
   G4double rand1,rand2,onemcost,greject;
   G4double masarep = 510.99906*keV;
   
   G4double gamma = 1. + energyE/masarep;
   G4double gamma2 = gamma*gamma;
   
   G4double beta = sqrt((gamma2 - 1.)/gamma2);
   
   G4double alfa = 1./beta - 1.;
   
   G4double g1 = 0.5*beta*gamma*(gamma-1.)*(gamma-2.);
   
   G4double alfap2 = alfa+2.;
   
   G4double grejectmax = 2.*(g1+1./alfa);
   
   do
     {
       rand1 = G4UniformRand();
       onemcost = 2.*alfa*(2.*rand1 + alfap2 * sqrt(rand1))/
     (alfap2*alfap2 - 4.*rand1);
       greject = (2. - onemcost)*(g1+1./(alfa+onemcost));
       rand2 = G4UniformRand();
     }
   while (rand2*grejectmax > greject);
   G4double cosTheta = 1. - onemcost;
   return cosTheta;
 } 

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◆ SetLimitNumberOfShells()

void G4LivermorePolarizedPhotoElectricGDModel::SetLimitNumberOfShells ( G4int n )

inline

Definition at line 124 of file G4LivermorePolarizedPhotoElectricGDModel.hh.

 {
   nShellLimit = n;
 }

◆ SetNewPolarization()

G4ThreeVector G4LivermorePolarizedPhotoElectricGDModel::SetNewPolarization	(	G4double	epsilon,
		G4double	sinSqrTheta,
		G4double	phi,
		G4double	cosTheta
	)

private

◆ SetPerpendicularVector()

G4ThreeVector G4LivermorePolarizedPhotoElectricGDModel::SetPerpendicularVector ( G4ThreeVector & a )

private

Definition at line 657 of file G4LivermorePolarizedPhotoElectricGDModel.cc.

 {
   G4double dx = a.x();
   G4double dy = a.y();
   G4double dz = a.z();
   G4double x = dx < 0.0 ? -dx : dx;
   G4double y = dy < 0.0 ? -dy : dy;
   G4double z = dz < 0.0 ? -dz : dz;
   if (x < y) {
     return x < z ? G4ThreeVector(-dy,dx,0) : G4ThreeVector(0,-dz,dy);
   }else{
     return y < z ? G4ThreeVector(dz,0,-dx) : G4ThreeVector(-dy,dx,0);
   }
 }

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◆ SetPhi()

G4double G4LivermorePolarizedPhotoElectricGDModel::SetPhi	(	G4double	Ph_energy,
		G4double	E_energy,
		G4double	costheta
	)

private

Definition at line 625 of file G4LivermorePolarizedPhotoElectricGDModel.cc.

 {
   G4double epsilon = E_energy/electron_mass_c2;
   G4double k = Ph_energy/electron_mass_c2;
   G4double gamma = 1. + epsilon;
   G4double gamma2 = gamma*gamma;
   G4double beta = sqrt((gamma2 - 1.)/gamma2);
   
   G4double d = (2./(k*gamma*(1-beta*costheta))-1)*(1/k);
   
   G4double norm_factor = 1 +2*d;
   
   G4double rnd1; 
   G4double rnd2;
   G4double phi, phiprob;
   
   do
     {
       rnd1 =G4UniformRand();
       rnd2 =G4UniformRand();
       phi = rnd1*twopi;
       phiprob = 1 +2*d*cos(phi)*cos(phi);
     }
   while (rnd2*norm_factor > phiprob);
   return phi;
 }

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◆ SystemOfRefChange()

void G4LivermorePolarizedPhotoElectricGDModel::SystemOfRefChange	(	G4ThreeVector &	direction0,
		G4ThreeVector &	direction1,
		G4ThreeVector &	polarization0
	)

private

Definition at line 722 of file G4LivermorePolarizedPhotoElectricGDModel.cc.

 {
   // direction0 is the original photon direction ---> z
   // polarization0 is the original photon polarization ---> x
   // need to specify y axis in the real reference frame ---> y 
   G4ThreeVector Axis_Z0 = direction0.unit();
   G4ThreeVector Axis_X0 = polarization0.unit();
   G4ThreeVector Axis_Y0 = (Axis_Z0.cross(Axis_X0)).unit(); // to be confirmed;
   
   G4double direction_x = direction1.getX();
   G4double direction_y = direction1.getY();
   G4double direction_z = direction1.getZ();
   
   direction1 = (direction_x*Axis_X0 + direction_y*Axis_Y0 +  direction_z*Axis_Z0).unit();
   
 }