#include <G4eBremParametrizedModel.hh>

Inheritance diagram for G4eBremParametrizedModel:

Collaboration diagram for G4eBremParametrizedModel:

Public Member Functions
	G4eBremParametrizedModel (const G4ParticleDefinition *p=0, const G4String &nam="eBremParam")

virtual	~G4eBremParametrizedModel ()

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

virtual void	InitialiseLocal (const G4ParticleDefinition , G4VEmModel masterModel)

virtual G4double	MinEnergyCut (const G4ParticleDefinition , const G4MaterialCutsCouple )

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

virtual G4double	ComputeCrossSectionPerAtom (const G4ParticleDefinition *, G4double tkin, G4double Z, G4double, G4double cutEnergy, G4double maxEnergy=DBL_MAX)

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

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

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	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 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
G4NistManager *	nist

const G4ParticleDefinition *	particle

G4ParticleDefinition *	theGamma

G4ParticleChangeForLoss *	fParticleChange

G4double	minThreshold

G4double	particleMass

G4double	kinEnergy

G4double	totalEnergy

G4double	currentZ

G4double	z13

G4double	z23

G4double	lnZ

G4double	densityFactor

G4double	densityCorr

G4double	Fel

G4double	Finel

G4double	facFel

G4double	facFinel

G4double	fMax

G4double	fCoulomb

G4bool	isElectron

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
static const G4double	xgi [8]

static const G4double	wgi [8]

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

Private Member Functions
void	InitialiseConstants ()

G4double	ComputeBremLoss (G4double cutEnergy)

G4double	ComputeXSectionPerAtom (G4double cutEnergy)

G4double	ComputeDXSectionPerAtom (G4double gammaEnergy)

G4double	ComputeParametrizedDXSectionPerAtom (G4double kineticEnergy, G4double gammaEnergy, G4double Z)

void	SetParticle (const G4ParticleDefinition *p)

G4double	ScreenFunction1 (G4double ScreenVariable)

G4double	ScreenFunction2 (G4double ScreenVariable)

void	SetCurrentElement (const G4double)

G4eBremParametrizedModel &	operator= (const G4eBremParametrizedModel &right)

	G4eBremParametrizedModel (const G4eBremParametrizedModel &)

Private Attributes
G4double	lowKinEnergy

G4double	fMigdalConstant

G4double	bremFactor

G4bool	isInitialised

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 *)

Detailed Description

Definition at line 61 of file G4eBremParametrizedModel.hh.

Constructor & Destructor Documentation

◆ G4eBremParametrizedModel() [1/2]

G4eBremParametrizedModel::G4eBremParametrizedModel	(	const G4ParticleDefinition *	p = `0`,
		const G4String &	nam = `"eBremParam"`
	)

Definition at line 100 of file G4eBremParametrizedModel.cc.

   : G4VEmModel(nam),
     particle(0),
     isElectron(true),
     fMigdalConstant(classic_electr_radius*electron_Compton_length*electron_Compton_length*4.0*pi),
     bremFactor(fine_structure_const*classic_electr_radius*classic_electr_radius*16./3.),
     isInitialised(false)
 {
   theGamma = G4Gamma::Gamma();
 
   minThreshold = 0.1*keV;
   lowKinEnergy = 10.*MeV;
   SetLowEnergyLimit(lowKinEnergy);  
 
   nist = G4NistManager::Instance();  
 
   SetAngularDistribution(new G4ModifiedTsai());
 
   particleMass = kinEnergy = totalEnergy = currentZ = z13 = z23 = lnZ = Fel = Finel 
     = densityFactor = densityCorr = fMax = fCoulomb = 0.;
 
   InitialiseConstants();
   if(p) { SetParticle(p); }
 }

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◆ ~G4eBremParametrizedModel()

G4eBremParametrizedModel::~G4eBremParametrizedModel ( )

virtual

Definition at line 136 of file G4eBremParametrizedModel.cc.

137 {

138 }

◆ G4eBremParametrizedModel() [2/2]

G4eBremParametrizedModel::G4eBremParametrizedModel ( const G4eBremParametrizedModel & )

private

Member Function Documentation

◆ ComputeBremLoss()

G4double G4eBremParametrizedModel::ComputeBremLoss ( G4double cutEnergy )

private

Definition at line 234 of file G4eBremParametrizedModel.cc.

 {
   G4double loss = 0.0;
 
   // number of intervals and integration step 
   G4double vcut = cut/totalEnergy;
   G4int n = (G4int)(20*vcut) + 3;
   G4double delta = vcut/G4double(n);
 
   G4double e0 = 0.0;
   G4double xs; 
 
   // integration
   for(G4int l=0; l<n; l++) {
 
     for(G4int i=0; i<8; i++) {
 
       G4double eg = (e0 + xgi[i]*delta)*totalEnergy;
 
       xs = ComputeDXSectionPerAtom(eg);
 
       loss += wgi[i]*xs/(1.0 + densityCorr/(eg*eg));
     }
     e0 += delta;
   }
 
   loss *= delta*totalEnergy;
 
   return loss;
 }

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◆ ComputeCrossSectionPerAtom()

G4double G4eBremParametrizedModel::ComputeCrossSectionPerAtom	(	const G4ParticleDefinition *	p,
		G4double	tkin,
		G4double	Z,
		G4double	,
		G4double	cutEnergy,
		G4double	maxEnergy = `DBL_MAX`
	)

virtual

Reimplemented from G4VEmModel.

Definition at line 267 of file G4eBremParametrizedModel.cc.

 {
   if(!particle) { SetParticle(p); }
   if(kineticEnergy < lowKinEnergy) { return 0.0; }
   G4double cut  = std::min(cutEnergy, kineticEnergy);
   G4double tmax = std::min(maxEnergy, kineticEnergy);
 
   if(cut >= tmax) { return 0.0; }
 
   SetCurrentElement(Z);
 
   G4double cross = ComputeXSectionPerAtom(cut);
 
   // allow partial integration
   if(tmax < kinEnergy) { cross -= ComputeXSectionPerAtom(tmax); }
   
   cross *= Z*Z*bremFactor;
 
   return cross;
 }

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◆ ComputeDEDXPerVolume()

G4double G4eBremParametrizedModel::ComputeDEDXPerVolume	(	const G4Material *	material,
		const G4ParticleDefinition *	p,
		G4double	kineticEnergy,
		G4double	cutEnergy
	)

virtual

Reimplemented from G4VEmModel.

Definition at line 201 of file G4eBremParametrizedModel.cc.

 {
   if(!particle) { SetParticle(p); }
   if(kineticEnergy < lowKinEnergy) { return 0.0; }
   G4double cut = std::min(cutEnergy, kineticEnergy);
   if(cut == 0.0) { return 0.0; }
 
   SetupForMaterial(particle, material,kineticEnergy);
 
   const G4ElementVector* theElementVector = material->GetElementVector();
   const G4double* theAtomicNumDensityVector = material->GetAtomicNumDensityVector();
 
   G4double dedx = 0.0;
 
   //  loop for elements in the material
   for (size_t i=0; i<material->GetNumberOfElements(); i++) {
 
     G4VEmModel::SetCurrentElement((*theElementVector)[i]);
     SetCurrentElement((*theElementVector)[i]->GetZ());
 
     dedx += theAtomicNumDensityVector[i]*currentZ*currentZ*ComputeBremLoss(cut);
   }
   dedx *= bremFactor;
 
   return dedx;
 }

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◆ ComputeDXSectionPerAtom()

G4double G4eBremParametrizedModel::ComputeDXSectionPerAtom ( G4double gammaEnergy )

private

Definition at line 441 of file G4eBremParametrizedModel.cc.

 {
 
   if(gammaEnergy < 0.0) { return 0.0; }
 
   G4double y = gammaEnergy/totalEnergy;
 
   G4double main=0.;
   //secondTerm=0.;
 
   // ** form factors complete screening case **
   //  only valid for high energies (and if LPM suppression does not play a role)
   main   = (3./4.*y*y - y + 1.) * ( (Fel-fCoulomb) + Finel/currentZ );
   //  secondTerm = (1.-y)/12.*(1.+1./currentZ);
 
   std::cout<<" F1(0) "<<ScreenFunction1(0.) <<std::endl;
   std::cout<<" F1(0) "<<ScreenFunction2(0.) <<std::endl;
   std::cout<<"Ekin = "<<kinEnergy<<std::endl;
   std::cout<<"Z = "<<currentZ<<std::endl;
   std::cout<<"main  = "<<main<<std::endl;
   std::cout<<" y = "<<y<<std::endl;
   std::cout<<" Fel-fCoulomb "<< (Fel-fCoulomb) <<std::endl;
 
   G4double main2 = ComputeParametrizedDXSectionPerAtom(kinEnergy,gammaEnergy,currentZ);
   std::cout<<"main2 = "<<main2<<std::endl;
   std::cout<<"main2tot = "<<main2 * ( (Fel-fCoulomb) + Finel/currentZ )/(Fel-fCoulomb);
 
   G4double cross =  main2; //main+secondTerm;
   return cross;
 }

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◆ ComputeParametrizedDXSectionPerAtom()

G4double G4eBremParametrizedModel::ComputeParametrizedDXSectionPerAtom	(	G4double	kineticEnergy,
		G4double	gammaEnergy,
		G4double	Z
	)

private

Definition at line 363 of file G4eBremParametrizedModel.cc.

 {
   SetCurrentElement(Z);
   G4double FZ = lnZ* (4.- 0.55*lnZ);
   G4double Z3 = z13; 
   G4double ZZ = z13*nist->GetZ13(G4lrint(Z)+1); 
 
   totalEnergy = kineticEnergy + electron_mass_c2;
 
   //  G4double x, epsil, greject, migdal, grejmax, q;
   G4double epsil, greject;
   G4double U  = G4Log(kineticEnergy/electron_mass_c2);
   G4double U2 = U*U;
 
   // precalculated parameters
   G4double ah, bh;
 
   if (kineticEnergy > tlow) {
        
     G4double ah1 = ah10 + ZZ* (ah11 + ZZ* ah12);
     G4double ah2 = ah20 + ZZ* (ah21 + ZZ* ah22);
     G4double ah3 = ah30 + ZZ* (ah31 + ZZ* ah32);
 
     G4double bh1 = bh10 + ZZ* (bh11 + ZZ* bh12);
     G4double bh2 = bh20 + ZZ* (bh21 + ZZ* bh22);
     G4double bh3 = bh30 + ZZ* (bh31 + ZZ* bh32);
 
     ah = 1.   + (ah1*U2 + ah2*U + ah3) / (U2*U);
     bh = 0.75 + (bh1*U2 + bh2*U + bh3) / (U2*U);
 
     // limit of the screening variable
     G4double screenfac =
       136.*electron_mass_c2/(Z3*totalEnergy);
 
     epsil = gammaEnergy/totalEnergy; //         epsil = x*kineticEnergy/totalEnergy;
         G4double screenvar = screenfac*epsil/(1.0-epsil);
         G4double F1 = max(ScreenFunction1(screenvar) - FZ ,0.);
         G4double F2 = max(ScreenFunction2(screenvar) - FZ ,0.);
 
 
     greject = (F1 - epsil* (ah*F1 - bh*epsil*F2))/8.; //  1./(42.392 - FZ);
 
     std::cout << " yy = "<<epsil<<std::endl;
     std::cout << " F1/(...) "<<F1/(42.392 - FZ)<<std::endl;
     std::cout << " F2/(...) "<<F2/(42.392 - FZ)<<std::endl;
     std::cout << " (42.392 - FZ) " << (42.392 - FZ) <<std::endl;
 
   } else {  
 
     G4double al0 = al00 + ZZ* (al01 + ZZ* al02);
     G4double al1 = al10 + ZZ* (al11 + ZZ* al12);
     G4double al2 = al20 + ZZ* (al21 + ZZ* al22);
  
     G4double bl0 = bl00 + ZZ* (bl01 + ZZ* bl02);
     G4double bl1 = bl10 + ZZ* (bl11 + ZZ* bl12);
     G4double bl2 = bl20 + ZZ* (bl21 + ZZ* bl22);
  
     ah = al0 + al1*U + al2*U2;
     bh = bl0 + bl1*U + bl2*U2;
 
     G4double x=gammaEnergy/kineticEnergy;
     greject=(1. + x* (ah + bh*x));
 
     /*
     // Compute the maximum of the rejection function
     grejmax = max(1. + xmin* (ah + bh*xmin), 1.+ah+bh);
     G4double xm = -ah/(2.*bh);
     if ( xmin < xm && xm < xmax) grejmax = max(grejmax, 1.+ xm* (ah + bh*xm));
     */
   }
 
   return greject;
 }

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◆ ComputeXSectionPerAtom()

G4double G4eBremParametrizedModel::ComputeXSectionPerAtom ( G4double cutEnergy )

private

Definition at line 295 of file G4eBremParametrizedModel.cc.

 {
   G4double cross = 0.0;
 
   // number of intervals and integration step 
   G4double vcut = G4Log(cut/totalEnergy);
   G4double vmax = G4Log(kinEnergy/totalEnergy);
   G4int n = (G4int)(0.45*(vmax - vcut)) + 4;
   //  n=1; //  integration test 
   G4double delta = (vmax - vcut)/G4double(n);
 
   G4double e0 = vcut;
   G4double xs; 
 
   // integration
   for(G4int l=0; l<n; l++) {
 
     for(G4int i=0; i<8; i++) {
 
       G4double eg = G4Exp(e0 + xgi[i]*delta)*totalEnergy;
 
       xs = ComputeDXSectionPerAtom(eg);
 
       cross += wgi[i]*xs/(1.0 + densityCorr/(eg*eg));
     }
     e0 += delta;
   }
 
   cross *= delta;
 
   return cross;
 }

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◆ Initialise()

void G4eBremParametrizedModel::Initialise	(	const G4ParticleDefinition *	p,
		const G4DataVector &	cuts
	)

virtual

Implements G4VEmModel.

Definition at line 175 of file G4eBremParametrizedModel.cc.

 {
   if(p) { SetParticle(p); }
 
   lowKinEnergy  = LowEnergyLimit();
 
   currentZ = 0.;
 
   if(IsMaster()) { InitialiseElementSelectors(p, cuts); }
 
   if(isInitialised) { return; }
   fParticleChange = GetParticleChangeForLoss();
   isInitialised = true;
 }

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◆ InitialiseConstants()

void G4eBremParametrizedModel::InitialiseConstants ( )

private

Definition at line 128 of file G4eBremParametrizedModel.cc.

 {
   facFel = G4Log(184.15);
   facFinel = G4Log(1194.);
 }

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◆ InitialiseLocal()

void G4eBremParametrizedModel::InitialiseLocal	(	const G4ParticleDefinition *	,
		G4VEmModel *	masterModel
	)

virtual

Reimplemented from G4VEmModel.

Definition at line 193 of file G4eBremParametrizedModel.cc.

 {
   SetElementSelectors(masterModel->GetElementSelectors());
 }

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◆ MinEnergyCut()

G4double G4eBremParametrizedModel::MinEnergyCut	(	const G4ParticleDefinition *	,
		const G4MaterialCutsCouple *
	)

virtual

Reimplemented from G4VEmModel.

Definition at line 152 of file G4eBremParametrizedModel.cc.

 {
   return minThreshold;
 }

◆ operator=()

G4eBremParametrizedModel& G4eBremParametrizedModel::operator= ( const G4eBremParametrizedModel & right )

private

◆ SampleSecondaries()

void G4eBremParametrizedModel::SampleSecondaries	(	std::vector< G4DynamicParticle >	vdp,
		const G4MaterialCutsCouple *	couple,
		const G4DynamicParticle *	dp,
		G4double	cutEnergy,
		G4double	maxEnergy
	)

virtual

Implements G4VEmModel.

Definition at line 474 of file G4eBremParametrizedModel.cc.

 {
   G4double kineticEnergy = dp->GetKineticEnergy();
   if(kineticEnergy < lowKinEnergy) { return; }
   G4double cut  = std::min(cutEnergy, kineticEnergy);
   G4double emax = std::min(maxEnergy, kineticEnergy);
   if(cut >= emax) { return; }
 
   SetupForMaterial(particle, couple->GetMaterial(),kineticEnergy);
 
   const G4Element* elm = 
     SelectRandomAtom(couple,particle,kineticEnergy,cut,emax);
   SetCurrentElement(elm->GetZ());
 
   kinEnergy   = kineticEnergy;
   totalEnergy = kineticEnergy + particleMass;
   densityCorr = densityFactor*totalEnergy*totalEnergy;
  
   G4double xmin = G4Log(cut*cut + densityCorr);
   G4double xmax = G4Log(emax*emax  + densityCorr);
   G4double gammaEnergy, f, x; 
 
   CLHEP::HepRandomEngine* rndmEngine = G4Random::getTheEngine();
 
   do {
     x = G4Exp(xmin + rndmEngine->flat()*(xmax - xmin)) - densityCorr;
     if(x < 0.0) x = 0.0;
     gammaEnergy = sqrt(x);
     f = ComputeDXSectionPerAtom(gammaEnergy);
 
     if ( f > fMax ) {
       G4cout << "### G4eBremParametrizedModel Warning: Majoranta exceeded! "
          << f << " > " << fMax
          << " Egamma(MeV)= " << gammaEnergy
          << " E(mEV)= " << kineticEnergy
          << G4endl;
     }
 
     // Loop checking, 03-Aug-2015, Vladimir Ivanchenko
   } while (f < fMax*rndmEngine->flat());
 
   //
   // angles of the emitted gamma. ( Z - axis along the parent particle)
   // use general interface
   //
   G4ThreeVector gammaDirection = 
     GetAngularDistribution()->SampleDirection(dp, totalEnergy-gammaEnergy,
                           G4lrint(currentZ), 
                           couple->GetMaterial());
 
   // create G4DynamicParticle object for the Gamma
   G4DynamicParticle* gamma = new G4DynamicParticle(theGamma,gammaDirection,
                            gammaEnergy);
   vdp->push_back(gamma);
   
   G4double totMomentum = sqrt(kineticEnergy*(totalEnergy + electron_mass_c2));
   G4ThreeVector direction = (totMomentum*dp->GetMomentumDirection()
                  - gammaEnergy*gammaDirection).unit();
 
   // energy of primary
   G4double finalE = kineticEnergy - gammaEnergy;
 
   // stop tracking and create new secondary instead of primary
   if(gammaEnergy > SecondaryThreshold()) {
     fParticleChange->ProposeTrackStatus(fStopAndKill);
     fParticleChange->SetProposedKineticEnergy(0.0);
     G4DynamicParticle* el = 
       new G4DynamicParticle(const_cast<G4ParticleDefinition*>(particle),
                 direction, finalE);
     vdp->push_back(el);
 
     // continue tracking
   } else {
     fParticleChange->SetProposedMomentumDirection(direction);
     fParticleChange->SetProposedKineticEnergy(finalE);
   }
 }

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◆ ScreenFunction1()

G4double G4eBremParametrizedModel::ScreenFunction1 ( G4double ScreenVariable )

private

Definition at line 332 of file G4eBremParametrizedModel.cc.

 {
   G4double screenVal;
 
   if (ScreenVariable > 1.)
     screenVal = 42.24 - 8.368*G4Log(ScreenVariable+0.952);
   else
     screenVal = 42.392 - ScreenVariable* (7.796 - 1.961*ScreenVariable);
 
   return screenVal;
 } 

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◆ ScreenFunction2()

G4double G4eBremParametrizedModel::ScreenFunction2 ( G4double ScreenVariable )

private

Definition at line 348 of file G4eBremParametrizedModel.cc.

 {
   G4double screenVal;
 
   if (ScreenVariable > 1.)
     screenVal = 42.24 - 8.368*G4Log(ScreenVariable+0.952);
   else
     screenVal = 41.734 - ScreenVariable* (6.484 - 1.250*ScreenVariable);
 
   return screenVal;
 } 

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◆ SetCurrentElement()

void G4eBremParametrizedModel::SetCurrentElement ( const G4double Z )

inlineprivate

Definition at line 164 of file G4eBremParametrizedModel.hh.

 {
   std::cout<<"SetCurrentElement Z="<<Z<<std::endl;
   if(Z != currentZ) {
     currentZ = Z;
 
     G4int iz = G4int(Z);
     z13 = nist->GetZ13(iz);
     z23 = z13*z13;
     lnZ = nist->GetLOGZ(iz);
 
     Fel = facFel - lnZ/3. ;
     Finel = facFinel - 2.*lnZ/3. ;
 
     fCoulomb = GetCurrentElement()->GetfCoulomb();
     fMax = Fel-fCoulomb + Finel/currentZ  +  (1.+1./currentZ)/12.;
 
   }
 }

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◆ SetParticle()

void G4eBremParametrizedModel::SetParticle ( const G4ParticleDefinition * p )

private

Definition at line 142 of file G4eBremParametrizedModel.cc.

 {
   particle = p;
   particleMass = p->GetPDGMass();
   if(p == G4Electron::Electron()) { isElectron = true; }
   else                            { isElectron = false;}
 }

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◆ SetupForMaterial()

void G4eBremParametrizedModel::SetupForMaterial	(	const G4ParticleDefinition *	,
		const G4Material *	mat,
		G4double	kineticEnergy
	)

virtual

Reimplemented from G4VEmModel.

Definition at line 160 of file G4eBremParametrizedModel.cc.

 {
   densityFactor = mat->GetElectronDensity()*fMigdalConstant;
 
   // calculate threshold for density effect
   kinEnergy   = kineticEnergy;
   totalEnergy = kineticEnergy + particleMass;
   densityCorr = densityFactor*totalEnergy*totalEnergy;    
 }