#include <G4WentzelVIModel.hh>

Inheritance diagram for G4WentzelVIModel:

Collaboration diagram for G4WentzelVIModel:

Public Member Functions
	G4WentzelVIModel (G4bool comb=true, const G4String &nam="WentzelVIUni")

virtual	~G4WentzelVIModel ()

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

virtual void	InitialiseLocal (const G4ParticleDefinition , G4VEmModel masterModel)

void	StartTracking (G4Track *)

virtual G4double	ComputeCrossSectionPerAtom (const G4ParticleDefinition *, G4double KineticEnergy, G4double AtomicNumber, G4double AtomicWeight=0., G4double cut=DBL_MAX, G4double emax=DBL_MAX)

virtual G4ThreeVector &	SampleScattering (const G4ThreeVector &, G4double safety)

virtual G4double	ComputeTruePathLengthLimit (const G4Track &track, G4double &currentMinimalStep)

virtual G4double	ComputeGeomPathLength (G4double truePathLength)

virtual G4double	ComputeTrueStepLength (G4double geomStepLength)

void	SetFixedCut (G4double)

G4double	GetFixedCut () const

G4WentzelOKandVIxSection *	GetWVICrossSection ()

void	SetUseSecondMoment (G4bool)

G4bool	UseSecondMoment () const

G4PhysicsTable *	GetSecondMomentTable ()

G4double	SecondMoment (const G4ParticleDefinition , const G4MaterialCutsCouple , G4double kineticEnergy)

void	SetSingleScatteringFactor (G4double)

Public Member Functions inherited from G4VMscModel
	G4VMscModel (const G4String &nam)

virtual	~G4VMscModel ()

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

void	SetStepLimitType (G4MscStepLimitType)

void	SetLateralDisplasmentFlag (G4bool val)

void	SetRangeFactor (G4double)

void	SetGeomFactor (G4double)

void	SetSkin (G4double)

void	SetSampleZ (G4bool)

G4VEnergyLossProcess *	GetIonisation () const

void	SetIonisation (G4VEnergyLossProcess , const G4ParticleDefinition part)

G4double	ComputeSafety (const G4ThreeVector &position, G4double limit=DBL_MAX)

G4double	ComputeGeomLimit (const G4Track &, G4double &presafety, G4double limit)

G4double	GetDEDX (const G4ParticleDefinition part, G4double kineticEnergy, const G4MaterialCutsCouple couple)

G4double	GetRange (const G4ParticleDefinition part, G4double kineticEnergy, const G4MaterialCutsCouple couple)

G4double	GetEnergy (const G4ParticleDefinition part, G4double range, const G4MaterialCutsCouple couple)

G4double	GetTransportMeanFreePath (const G4ParticleDefinition *part, G4double kinEnergy)

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	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	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 Member Functions
void	DefineMaterial (const G4MaterialCutsCouple *)

Protected Member Functions inherited from G4VMscModel
G4ParticleChangeForMSC *	GetParticleChangeForMSC (const G4ParticleDefinition *p=0)

G4double	ConvertTrueToGeom (G4double &tLength, G4double &gLength)

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 *)

Protected Attributes
G4WentzelOKandVIxSection *	wokvi

G4double	tlimitminfix

G4double	ssFactor

G4double	invssFactor

G4double	preKinEnergy

G4double	tPathLength

G4double	zPathLength

G4double	lambdaeff

G4double	currentRange

G4double	cosTetMaxNuc

G4int	currentMaterialIndex

const G4MaterialCutsCouple *	currentCouple

const G4Material *	currentMaterial

const G4ParticleDefinition *	particle

G4bool	singleScatteringMode

Protected Attributes inherited from G4VMscModel
G4double	facrange

G4double	facgeom

G4double	facsafety

G4double	skin

G4double	dtrl

G4double	lambdalimit

G4double	geomMin

G4double	geomMax

G4ThreeVector	fDisplacement

G4MscStepLimitType	steppingAlgorithm

G4bool	samplez

G4bool	latDisplasment

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
G4double	ComputeTransportXSectionPerVolume (G4double cosTheta)

G4double	ComputeSecondMoment (const G4ParticleDefinition *, G4double kineticEnergy)

void	SetupParticle (const G4ParticleDefinition *)

G4WentzelVIModel &	operator= (const G4WentzelVIModel &right)

	G4WentzelVIModel (const G4WentzelVIModel &)

Private Attributes
G4ParticleChangeForMSC *	fParticleChange

const G4DataVector *	currentCuts

G4double	invsqrt12

G4double	fixedCut

G4double	effKinEnergy

G4double	cosThetaMin

G4double	cosThetaMax

G4PhysicsTable *	fSecondMoments

size_t	idx2

G4double	xtsec

std::vector< G4double >	xsecn

std::vector< G4double >	prob

G4int	nelments

G4double	numlimit

G4double	lowEnergyLimit

G4bool	isCombined

G4bool	useSecondMoment

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

Detailed Description

Definition at line 66 of file G4WentzelVIModel.hh.

Constructor & Destructor Documentation

◆ G4WentzelVIModel() [1/2]

G4WentzelVIModel::G4WentzelVIModel	(	G4bool	comb = `true`,
		const G4String &	nam = `"WentzelVIUni"`
	)

Definition at line 76 of file G4WentzelVIModel.cc.

                                                                        :
   G4VMscModel(nam),
   ssFactor(1.05),
   invssFactor(1.0),
   currentCouple(0),
   singleScatteringMode(false),
   cosThetaMin(1.0),
   cosThetaMax(-1.0),
   fSecondMoments(0),
   idx2(0),
   numlimit(0.1),
   isCombined(combined),
   useSecondMoment(false)
 {
   SetSingleScatteringFactor(1.25);
   invsqrt12 = 1./sqrt(12.);
   tlimitminfix = 1.e-6*mm;
   lowEnergyLimit = 1.0*eV;
   particle = 0;
   nelments = 5;
   xsecn.resize(nelments);
   prob.resize(nelments);
   wokvi = new G4WentzelOKandVIxSection(combined);
   fixedCut = -1.0;
 
   preKinEnergy = effKinEnergy = tPathLength = zPathLength = lambdaeff 
     = currentRange = xtsec = cosTetMaxNuc = 0.0;
   currentMaterialIndex = 0;
 
   fParticleChange = 0;
   currentCuts = 0;
   currentMaterial = 0;
 }

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◆ ~G4WentzelVIModel()

G4WentzelVIModel::~G4WentzelVIModel ( )

virtual

Definition at line 112 of file G4WentzelVIModel.cc.

 {
   delete wokvi;
   if(fSecondMoments && IsMaster()) {
     delete fSecondMoments;
     fSecondMoments = 0;
   }
 }

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◆ G4WentzelVIModel() [2/2]

G4WentzelVIModel::G4WentzelVIModel ( const G4WentzelVIModel & )

private

Member Function Documentation

◆ ComputeCrossSectionPerAtom()

G4double G4WentzelVIModel::ComputeCrossSectionPerAtom	(	const G4ParticleDefinition *	p,
		G4double	KineticEnergy,
		G4double	AtomicNumber,
		G4double	AtomicWeight = `0.`,
		G4double	cut = `DBL_MAX`,
		G4double	emax = `DBL_MAX`
	)

virtual

Reimplemented from G4VEmModel.

Definition at line 210 of file G4WentzelVIModel.cc.

 {
   G4double cross = 0.0;
   if(p != particle) { SetupParticle(p); }
   if(kinEnergy < lowEnergyLimit) { return cross; }
   if(!CurrentCouple()) {
     G4Exception("G4WentzelVIModel::ComputeCrossSectionPerAtom", "em0011",
                 FatalException, " G4MaterialCutsCouple is not defined");
     return 0.0;
   }
   DefineMaterial(CurrentCouple());
   cosTetMaxNuc = wokvi->SetupKinematic(kinEnergy, currentMaterial);
   if(cosTetMaxNuc < 1.0) {
     G4double cut = cutEnergy;
     if(fixedCut > 0.0) { cut = fixedCut; }
     G4double cost = wokvi->SetupTarget(G4lrint(Z), cut);
     cross = wokvi->ComputeTransportCrossSectionPerAtom(cost);
     /*
     if(p->GetParticleName() == "e-")      
     G4cout << "G4WentzelVIModel::CS: Z= " << G4int(Z) << " e(MeV)= "<<kinEnergy 
            << " 1-cosN= " << 1 - cosTetMaxNuc << " cross(bn)= " << cross/barn
            << " " << particle->GetParticleName() << G4endl;
     */
   }
   return cross;
 }

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◆ ComputeGeomPathLength()

G4double G4WentzelVIModel::ComputeGeomPathLength ( G4double truePathLength )

virtual

Reimplemented from G4VMscModel.

Definition at line 347 of file G4WentzelVIModel.cc.

 {
   zPathLength = tPathLength = truelength;
 
   // small step use only single scattering
   cosThetaMin = 1.0;
   ComputeTransportXSectionPerVolume(cosThetaMin);
   //G4cout << "xtsec= " << xtsec << "  Nav= " 
   //         << zPathLength*xtsec << G4endl;
   if(0.0 >= lambdaeff || G4int(zPathLength*xtsec) < minNCollisions) {
     singleScatteringMode = true;
     lambdaeff = DBL_MAX;
 
   } else {
     //G4cout << "ComputeGeomPathLength: tLength= " << tPathLength
     //           << " Leff= " << lambdaeff << G4endl; 
     // small step
     if(tPathLength < numlimit*lambdaeff) {
       G4double tau = tPathLength/lambdaeff;
       zPathLength *= (1.0 - 0.5*tau + tau*tau/6.0);
 
       // medium step
     } else {
       G4double e1 = 0.0;
       if(currentRange > tPathLength) {
         e1 = GetEnergy(particle,currentRange-tPathLength,currentCouple);
       }
       effKinEnergy = 0.5*(e1 + preKinEnergy);
       cosTetMaxNuc = wokvi->SetupKinematic(effKinEnergy, currentMaterial);
       lambdaeff = GetTransportMeanFreePath(particle, effKinEnergy);
       //G4cout << " tLength= "<< tPathLength<< " Leff= " << lambdaeff << G4endl;
       zPathLength = lambdaeff;
       if(tPathLength*numlimit < lambdaeff) {
         zPathLength *= (1.0 - G4Exp(-tPathLength/lambdaeff));
       }
     }
   }
   //G4cout << "Comp.geom: zLength= "<<zPathLength<<" tLength= "
   //         << tPathLength<< " Leff= " << lambdaeff << G4endl;
   return zPathLength;
 }

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◆ ComputeSecondMoment()

G4double G4WentzelVIModel::ComputeSecondMoment	(	const G4ParticleDefinition *	p,
		G4double	kineticEnergy
	)

private

Definition at line 755 of file G4WentzelVIModel.cc.

 {
   G4double xs = 0.0;
 
   SetupParticle(p);
   cosTetMaxNuc = wokvi->SetupKinematic(kinEnergy, currentMaterial);
 
   if(cosTetMaxNuc >= 1.0) { return xs; }
 
   const G4ElementVector* theElementVector = currentMaterial->GetElementVector();
   const G4double* theAtomNumDensityVector = 
     currentMaterial->GetVecNbOfAtomsPerVolume();
   G4int nelm = currentMaterial->GetNumberOfElements();
 
   G4double cut = (*currentCuts)[currentMaterialIndex];
   if(fixedCut > 0.0) { cut = fixedCut; }
 
   // loop over elements
   for (G4int i=0; i<nelm; ++i) {
     G4double costm = 
       wokvi->SetupTarget(G4lrint((*theElementVector)[i]->GetZ()), cut);
     xs += theAtomNumDensityVector[i]
       *wokvi->ComputeSecondTransportMoment(costm);
   }
   return xs;
 }

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◆ ComputeTransportXSectionPerVolume()

G4double G4WentzelVIModel::ComputeTransportXSectionPerVolume ( G4double cosTheta )

private

Definition at line 700 of file G4WentzelVIModel.cc.

 {
   // prepare recomputation of x-sections
   const G4ElementVector* theElementVector = currentMaterial->GetElementVector();
   const G4double* theAtomNumDensityVector = 
     currentMaterial->GetVecNbOfAtomsPerVolume();
   G4int nelm = currentMaterial->GetNumberOfElements();
   if(nelm > nelments) {
     nelments = nelm;
     xsecn.resize(nelm);
     prob.resize(nelm);
   }
 
   // check consistency
   xtsec = 0.0;
   if(cosTetMaxNuc >= cosTheta) { return 0.0; }
 
   G4double cut = (*currentCuts)[currentMaterialIndex];
   if(fixedCut > 0.0) { cut = fixedCut; }
 
   // loop over elements
   G4double xs = 0.0;
   for (G4int i=0; i<nelm; ++i) {
     G4double costm = 
       wokvi->SetupTarget(G4lrint((*theElementVector)[i]->GetZ()), cut);
     G4double density = theAtomNumDensityVector[i];
 
     G4double esec = 0.0;
     if(costm < cosTheta) {  
 
       // recompute the transport x-section
       if(1.0 > cosTheta) {
         xs += density*wokvi->ComputeTransportCrossSectionPerAtom(cosTheta);
       }
       // recompute the total x-section
       G4double nucsec = wokvi->ComputeNuclearCrossSection(cosTheta, costm);
       esec = wokvi->ComputeElectronCrossSection(cosTheta, costm);
       nucsec += esec;
       if(nucsec > 0.0) { esec /= nucsec; }
       xtsec += nucsec*density;
     }
     xsecn[i] = xtsec;
     prob[i]  = esec;
     //G4cout << i << "  xs= " << xs << " xtsec= " << xtsec 
     //       << " 1-cosTheta= " << 1-cosTheta 
     //           << " 1-cosTetMaxNuc2= " <<1-cosTetMaxNuc2<< G4endl;
   }
   
   //G4cout << "ComputeXS result:  xsec(1/mm)= " << xs 
   //         << " txsec(1/mm)= " << xtsec <<G4endl; 
   return xs;
 }

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◆ ComputeTruePathLengthLimit()

G4double G4WentzelVIModel::ComputeTruePathLengthLimit	(	const G4Track &	track,
		G4double &	currentMinimalStep
	)

virtual

Reimplemented from G4VMscModel.

Reimplemented in G4LowEWentzelVIModel.

Definition at line 250 of file G4WentzelVIModel.cc.

 {
   G4double tlimit = currentMinimalStep;
   const G4DynamicParticle* dp = track.GetDynamicParticle();
   G4StepPoint* sp = track.GetStep()->GetPreStepPoint();
   G4StepStatus stepStatus = sp->GetStepStatus();
   singleScatteringMode = false;
 
   //G4cout << "G4WentzelVIModel::ComputeTruePathLengthLimit stepStatus= " 
   //         << stepStatus << "  " << track.GetDefinition()->GetParticleName() 
   //         << G4endl;
 
   // initialisation for each step, lambda may be computed from scratch
   preKinEnergy = dp->GetKineticEnergy();
   effKinEnergy = preKinEnergy;
   DefineMaterial(track.GetMaterialCutsCouple());
   lambdaeff = GetTransportMeanFreePath(particle,preKinEnergy);
   currentRange = GetRange(particle,preKinEnergy,currentCouple);
   cosTetMaxNuc = wokvi->SetupKinematic(preKinEnergy, currentMaterial);
   
   //G4cout << "lambdaeff= " << lambdaeff << " Range= " << currentRange
   //         << " tlimit= " << tlimit << " 1-cost= " << 1 - cosTetMaxNuc << G4endl;
   
   // extra check for abnormal situation
   // this check needed to run MSC with eIoni and eBrem inactivated
   if(tlimit > currentRange) { tlimit = currentRange; }
 
   // stop here if small range particle
   if(tlimit < tlimitminfix) { 
     return ConvertTrueToGeom(tlimit, currentMinimalStep); 
   }
 
   // pre step
   G4double presafety = sp->GetSafety();
   // far from geometry boundary
   if(currentRange < presafety) {
     return ConvertTrueToGeom(tlimit, currentMinimalStep);
   }
 
   // compute presafety again if presafety <= 0 and no boundary
   // i.e. when it is needed for optimization purposes
   if(stepStatus != fGeomBoundary && presafety < tlimitminfix) {
     presafety = ComputeSafety(sp->GetPosition(), tlimit); 
     if(currentRange < presafety) {
       return ConvertTrueToGeom(tlimit, currentMinimalStep);
     }
   }
   /*       
   G4cout << "e(MeV)= " << preKinEnergy/MeV
          << "  " << particle->GetParticleName() 
          << " CurLimit(mm)= " << tlimit/mm <<" safety(mm)= " << presafety/mm
          << " R(mm)= " <<currentRange/mm
          << " L0(mm^-1)= " << lambdaeff*mm 
          << G4endl;
   */
   // natural limit for high energy
   G4double rlimit = std::max(facrange*currentRange, 
                              (1.0 - cosTetMaxNuc)*lambdaeff*invssFactor);
 
   // low-energy e-
   if(cosThetaMax > cosTetMaxNuc) {
     rlimit = std::min(rlimit, facsafety*presafety);
   }
    
   // cut correction
   G4double rcut = currentCouple->GetProductionCuts()->GetProductionCut(1);
   //G4cout << "rcut= " << rcut << " rlimit= " << rlimit << " presafety= " 
   // << presafety << " 1-cosThetaMax= " <<1-cosThetaMax 
   //<< " 1-cosTetMaxNuc= " << 1-cosTetMaxNuc << G4endl;
   if(rcut > rlimit) { rlimit = std::min(rlimit, rcut*sqrt(rlimit/rcut)); }
  
   tlimit = std::min(tlimit, rlimit);
   tlimit = std::max(tlimit, tlimitminfix);
 
   // step limit in infinite media
   tlimit = std::min(tlimit, 50*currentMaterial->GetRadlen()/facgeom);
 
   //compute geomlimit and force few steps within a volume
   if (steppingAlgorithm == fUseDistanceToBoundary 
       && stepStatus == fGeomBoundary) {
 
     G4double geomlimit = ComputeGeomLimit(track, presafety, currentRange);
     tlimit = std::min(tlimit, geomlimit/facgeom);
   } 
   /*         
   G4cout << particle->GetParticleName() << " e= " << preKinEnergy
          << " L0= " << lambdaeff << " R= " << currentRange
          << " tlimit= " << tlimit  
            << " currentMinimalStep= " << currentMinimalStep << G4endl;
   */
   return ConvertTrueToGeom(tlimit, currentMinimalStep);
 }

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◆ ComputeTrueStepLength()

G4double G4WentzelVIModel::ComputeTrueStepLength ( G4double geomStepLength )

virtual

Reimplemented from G4VMscModel.

Definition at line 391 of file G4WentzelVIModel.cc.

 {
   // initialisation of single scattering x-section
   /*
   G4cout << "ComputeTrueStepLength: Step= " << geomStepLength 
          << "  geomL= " << zPathLength
          << "  Lambda= " <<  lambdaeff 
            << " 1-cosThetaMaxNuc= " << 1 - cosTetMaxNuc << G4endl;
   */
   if(singleScatteringMode) {
     zPathLength = tPathLength = geomStepLength;
 
   } else {
 
     // step defined by transportation
     // change both geom and true step lengths 
     if(geomStepLength < zPathLength) { 
 
       // single scattering
       if(G4int(geomStepLength*xtsec) < minNCollisions) {
         zPathLength = tPathLength = geomStepLength;
         lambdaeff = DBL_MAX;
         singleScatteringMode = true;
 
         // multiple scattering
       } else {
         // small step
         if(geomStepLength < numlimit*lambdaeff) {
           G4double tau = geomStepLength/lambdaeff;
           tPathLength = geomStepLength*(1.0 + 0.5*tau + tau*tau/3.0); 
 
           // energy correction for a big step
         } else {
           tPathLength *= geomStepLength/zPathLength;
           G4double e1 = 0.0;
           if(currentRange > tPathLength) {
             e1 = GetEnergy(particle,currentRange-tPathLength,currentCouple);
           }
           effKinEnergy = 0.5*(e1 + preKinEnergy);
           cosTetMaxNuc = wokvi->SetupKinematic(effKinEnergy, currentMaterial);
           lambdaeff = GetTransportMeanFreePath(particle, effKinEnergy);
           G4double tau = geomStepLength/lambdaeff;
 
           if(tau < 0.999999) { tPathLength = -lambdaeff*G4Log(1.0 - tau); } 
           else               { tPathLength = currentRange; }
         }
         zPathLength = geomStepLength;
       }
     }
   }
   // check of step length
   // define threshold angle between single and multiple scattering 
   if(!singleScatteringMode) {
     cosThetaMin -= ssFactor*tPathLength/lambdaeff; 
     xtsec = 0.0;
 
     // recompute transport cross section - do not change energy
     // anymore - cannot be applied for big steps
     if(cosThetaMin > cosTetMaxNuc) {
       // new computation
       G4double cross = ComputeTransportXSectionPerVolume(cosThetaMin);
       //G4cout << "%%%% cross= " << cross << "  xtsec= " << xtsec 
       //           << " 1-cosTMin= " << 1.0 - cosThetaMin << G4endl;
       if(cross <= 0.0) {
         singleScatteringMode = true;
         tPathLength = zPathLength; 
         lambdaeff = DBL_MAX;
         cosThetaMin = 1.0;
       } else if(xtsec > 0.0) {
         
         lambdaeff = 1./cross; 
         G4double tau = zPathLength*cross;
         if(tau < numlimit) { 
           tPathLength = zPathLength*(1.0 + 0.5*tau + tau*tau/3.0); 
         } else if(tau < 0.999999) { 
           tPathLength = -lambdaeff*G4Log(1.0 - tau); 
         } else { 
           tPathLength = currentRange;
         }
       }
     } 
   }
   tPathLength = std::min(tPathLength, currentRange);
   /*      
   G4cout <<"Comp.true: zLength= "<<zPathLength<<" tLength= "<<tPathLength
          <<" Leff(mm)= "<<lambdaeff/mm<<" sig0(1/mm)= " << xtsec <<G4endl;
   G4cout << particle->GetParticleName() << " 1-cosThetaMin= " << 1-cosThetaMin
          << " 1-cosTetMaxNuc= " << 1-cosTetMaxNuc 
          << " e(MeV)= " << preKinEnergy/MeV << "  "  
          << " SSmode= " << singleScatteringMode << G4endl;
   */
   return tPathLength;
 }

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◆ DefineMaterial()

void G4WentzelVIModel::DefineMaterial ( const G4MaterialCutsCouple * cup )

inlineprotected

Definition at line 201 of file G4WentzelVIModel.hh.

 { 
   if(cup != currentCouple) {
     currentCouple = cup;
     SetCurrentCouple(cup); 
     currentMaterial = cup->GetMaterial();
     currentMaterialIndex = currentCouple->GetIndex(); 
   }
 }

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◆ GetFixedCut()

G4double G4WentzelVIModel::GetFixedCut ( ) const

inline

Definition at line 231 of file G4WentzelVIModel.hh.

 {
   return fixedCut;
 }

◆ GetSecondMomentTable()

G4PhysicsTable * G4WentzelVIModel::GetSecondMomentTable ( )

inline

Definition at line 259 of file G4WentzelVIModel.hh.

 {
   return fSecondMoments;
 }

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◆ GetWVICrossSection()

G4WentzelOKandVIxSection * G4WentzelVIModel::GetWVICrossSection ( )

inline

Definition at line 238 of file G4WentzelVIModel.hh.

 {
   return wokvi;
 }

◆ Initialise()

void G4WentzelVIModel::Initialise	(	const G4ParticleDefinition *	p,
		const G4DataVector &	cuts
	)

virtual

Implements G4VEmModel.

Definition at line 123 of file G4WentzelVIModel.cc.

 {
   // reset parameters
   SetupParticle(p);
   currentRange = 0.0;
 
   if(isCombined) {
     G4double tet = PolarAngleLimit();
     if(tet <= 0.0)           { cosThetaMax = 1.0; }
     else if(tet < CLHEP::pi) { cosThetaMax = cos(tet); }
   }
 
   //G4cout << "G4WentzelVIModel::Initialise " << p->GetParticleName() << G4endl;
   wokvi->Initialise(p, cosThetaMax);
   /*  
   G4cout << "G4WentzelVIModel: " << particle->GetParticleName()
          << "  1-cos(ThetaLimit)= " << 1 - cosThetaMax 
          << " SingScatFactor= " << ssFactor
          << G4endl;
   */
   currentCuts = &cuts;
 
   // set values of some data members
   fParticleChange = GetParticleChangeForMSC(p);
 
   // build second moment table only if transport table is build
   G4PhysicsTable* table = GetCrossSectionTable();
   if(useSecondMoment && IsMaster() && table) {
 
     //G4cout << "### G4WentzelVIModel::Initialise: build 2nd moment table "
     //           << table << G4endl;
     fSecondMoments =  
       G4PhysicsTableHelper::PreparePhysicsTable(fSecondMoments);
     // Access to materials
     const G4ProductionCutsTable* theCoupleTable =
       G4ProductionCutsTable::GetProductionCutsTable();
     size_t numOfCouples = theCoupleTable->GetTableSize();
 
     G4bool splineFlag = true;
     G4PhysicsVector* aVector = 0;
     G4PhysicsVector* bVector = 0;
     G4double emin = std::max(LowEnergyLimit(), LowEnergyActivationLimit());
     G4double emax = std::min(HighEnergyLimit(), HighEnergyActivationLimit());
     if(emin < emax) {
       size_t n = G4EmParameters::Instance()->NumberOfBinsPerDecade()
         *G4lrint(std::log10(emax/emin));
       if(n < 3) { n = 3; }
 
       for(size_t i=0; i<numOfCouples; ++i) {
 
         //G4cout<< "i= " << i << " Flag=  " << fSecondMoments->GetFlag(i) 
         //      << G4endl;
         if(fSecondMoments->GetFlag(i)) {
           DefineMaterial(theCoupleTable->GetMaterialCutsCouple(i));
        
           delete (*fSecondMoments)[i];
           if(!aVector) { 
             aVector = new G4PhysicsLogVector(emin, emax, n);
             bVector = aVector;
           } else {
             bVector = new G4PhysicsVector(*aVector);
           }
           for(size_t j=0; j<n; ++j) {
             G4double e = bVector->Energy(j); 
             bVector->PutValue(j, ComputeSecondMoment(p, e)*e*e);
           }
           if(splineFlag) { bVector->FillSecondDerivatives(); }
           (*fSecondMoments)[i] = bVector;  
         }
       }
     } 
     //G4cout << *fSecondMoments << G4endl;
   }
 }

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◆ InitialiseLocal()

void G4WentzelVIModel::InitialiseLocal	(	const G4ParticleDefinition *	,
		G4VEmModel *	masterModel
	)

virtual

Reimplemented from G4VEmModel.

Definition at line 201 of file G4WentzelVIModel.cc.

 {
   fSecondMoments = static_cast<G4WentzelVIModel*>(masterModel)
     ->GetSecondMomentTable(); 
 }

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◆ operator=()

G4WentzelVIModel& G4WentzelVIModel::operator= ( const G4WentzelVIModel & right )

private

◆ SampleScattering()

G4ThreeVector & G4WentzelVIModel::SampleScattering	(	const G4ThreeVector &	oldDirection,
		G4double	safety
	)

virtual

Reimplemented from G4VMscModel.

Definition at line 488 of file G4WentzelVIModel.cc.

 {
   fDisplacement.set(0.0,0.0,0.0);
   //G4cout << "!##! G4WentzelVIModel::SampleScattering for " 
   //         << particle->GetParticleName() << G4endl;
 
   // ignore scattering for zero step length and energy below the limit
   if(preKinEnergy < lowEnergyLimit || tPathLength <= 0.0) 
     { return fDisplacement; }
   
   G4double invlambda = 0.0;
   if(lambdaeff < DBL_MAX) { invlambda = 0.5/lambdaeff; }
 
   // use average kinetic energy over the step
   G4double cut = (*currentCuts)[currentMaterialIndex];
   if(fixedCut > 0.0) { cut = fixedCut; }
   /*  
   G4cout <<"SampleScat: E0(MeV)= "<< preKinEnergy/MeV
            << " Leff= " << lambdaeff <<" sig0(1/mm)= " << xtsec 
           << " xmsc= " <<  tPathLength*invlambda 
          << " safety= " << safety << G4endl;
   */
   // step limit due msc
   G4int nMscSteps = 1;
   G4double x0 = tPathLength;
   G4double z0 = x0*invlambda;
   //G4double zzz = 0.0;
   G4double prob2 = 0.0;
 
   CLHEP::HepRandomEngine* rndmEngine = G4Random::getTheEngine();
 
   // large scattering angle case - two step approach
   if(!singleScatteringMode) {
     static const G4double zzmin = 0.05;
     if(useSecondMoment) { 
       G4double z1 = invlambda*invlambda;
       G4double z2 = SecondMoment(particle, currentCouple, effKinEnergy);
       prob2 = (z2 - z1)/(1.5*z1 - z2);
     }
     //    if(z0 > zzmin && safety > tlimitminfix) { 
     if(z0 > zzmin) { 
       x0 *= 0.5; 
       z0 *= 0.5;
       nMscSteps = 2;
     } 
     //if(z0 > zzmin) { zzz = G4Exp(-1.0/z0); }
     G4double zzz = 0.0;
     if(z0 > zzmin) { 
       zzz = G4Exp(-1.0/z0); 
       z0 += zzz; 
       prob2 *= (1 + zzz);
     }
     prob2 /= (1 + prob2);
   } 
 
   // step limit due to single scattering
   G4double x1 = 2*tPathLength;
   if(0.0 < xtsec) { x1 = -G4Log(rndmEngine->flat())/xtsec; }
 
   // no scattering case
   if(singleScatteringMode && x1 > tPathLength)  
     { return fDisplacement; }
 
   const G4ElementVector* theElementVector = 
     currentMaterial->GetElementVector();
   G4int nelm = currentMaterial->GetNumberOfElements();
 
   // geometry
   G4double sint, cost, phi;
   G4ThreeVector temp(0.0,0.0,1.0);
 
   // current position and direction relative to the end point
   // because of magnetic field geometry is computed relatively to the 
   // end point of the step 
   G4ThreeVector dir(0.0,0.0,1.0);
   fDisplacement.set(0.0,0.0,-zPathLength);
 
   G4double mscfac = zPathLength/tPathLength;
 
   // start a loop 
   G4double x2 = x0;
   G4double step, z;
   G4bool singleScat;
   /*   
     G4cout << "Start of the loop x1(mm)= " << x1 << "  x2(mm)= " << x2 
     << " 1-cost1= " << 1 - cosThetaMin << " SSmode= " << singleScatteringMode 
            << " xtsec= " << xtsec << " Nst= "  << nMscSteps << G4endl;
   */
   do {
 
     //G4cout << "# x1(mm)= "<< x1<< " x2(mm)= "<< x2 << G4endl;
     // single scattering case
     if(singleScatteringMode && x1 > x2) { 
       fDisplacement += x2*mscfac*dir;
       break; 
     }
 
     // what is next single of multiple?
     if(x1 <= x2) { 
       step = x1;
       singleScat = true;
     } else {
       step = x2;
       singleScat = false;
     }
 
     //G4cout << "# step(mm)= "<< step<< "  singlScat= "<< singleScat << G4endl;
 
     // new position
     fDisplacement += step*mscfac*dir;
 
     if(singleScat) {
 
       // select element
       G4int i = 0;
       if(nelm > 1) {
         G4double qsec = rndmEngine->flat()*xtsec;
         for (; i<nelm; ++i) { if(xsecn[i] >= qsec) { break; } }
       }
       G4double cosTetM = 
         wokvi->SetupTarget(G4lrint((*theElementVector)[i]->GetZ()), cut);
       //G4cout << "!!! " << cosThetaMin << "  " << cosTetM << "  " 
       //     << prob[i] << G4endl;
       temp = wokvi->SampleSingleScattering(cosThetaMin, cosTetM, prob[i]);
 
       // direction is changed
       temp.rotateUz(dir);
       dir = temp;
       //G4cout << dir << G4endl;
 
       // new proposed step length
       x2 -= step; 
       x1  = -G4Log(rndmEngine->flat())/xtsec; 
 
     // multiple scattering
     } else { 
       --nMscSteps;
       x1 -= step;
       x2  = x0;
 
       // sample z in interval 0 - 1
       G4bool isFirst = true;
       if(prob2 > 0.0 && rndmEngine->flat() < prob2) { isFirst = false; } 
       do {
         //z = -z0*G4Log(1.0 - (1.0 - zzz)*rndmEngine->flat());
         if(isFirst) { z = -G4Log(rndmEngine->flat()); }
         else        { z = G4RandGamma::shoot(rndmEngine, 2.0, 2.0); }
         z *= z0;
         // Loop checking, 03-Aug-2015, Vladimir Ivanchenko
       } while(z > 1.0);
 
       cost = 1.0 - 2.0*z/*factCM*/;
       if(cost > 1.0)       { cost = 1.0; }
       else if(cost < -1.0) { cost =-1.0; }
       sint = sqrt((1.0 - cost)*(1.0 + cost));
       phi  = twopi*rndmEngine->flat();
       G4double vx1 = sint*cos(phi);
       G4double vy1 = sint*sin(phi);
 
       // lateral displacement  
       if (latDisplasment) {
         G4double rms = invsqrt12*sqrt(2*z0);
         G4double r   = x0*mscfac;
         G4double dx  = r*(0.5*vx1 + rms*G4RandGauss::shoot(rndmEngine, 0.0, 1.0));
         G4double dy  = r*(0.5*vy1 + rms*G4RandGauss::shoot(rndmEngine, 0.0, 1.0));
         G4double dz;
         G4double d   = r*r - dx*dx - dy*dy;
 
         // change position
         if(d >= 0.0)  { 
           dz = sqrt(d) - r; 
           temp.set(dx,dy,dz);
           temp.rotateUz(dir); 
           fDisplacement += temp;
         }
       }
       // change direction
       temp.set(vx1,vy1,cost);
       temp.rotateUz(dir);
       dir = temp;
     }
     // Loop checking, 03-Aug-2015, Vladimir Ivanchenko
   } while (0 < nMscSteps);
     
   dir.rotateUz(oldDirection);
 
   //G4cout<<"G4WentzelVIModel sampling is done 1-cost= "<< 1.-dir.z()<<G4endl;
   // end of sampling -------------------------------
 
   fParticleChange->ProposeMomentumDirection(dir);
 
   // lateral displacement  
   fDisplacement.rotateUz(oldDirection);
 
   /*
          G4cout << " r(mm)= " << fDisplacement.mag() 
                 << " safety= " << safety
                 << " trueStep(mm)= " << tPathLength
                 << " geomStep(mm)= " << zPathLength
                 << " x= " << fDisplacement.x() 
                 << " y= " << fDisplacement.y() 
                 << " z= " << fDisplacement.z()
                 << G4endl;
   */
 
   //G4cout<< "G4WentzelVIModel::SampleScattering end NewDir= " << dir<< G4endl;
   return fDisplacement;
 }

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◆ SecondMoment()

G4double G4WentzelVIModel::SecondMoment	(	const G4ParticleDefinition *	part,
		const G4MaterialCutsCouple *	couple,
		G4double	kineticEnergy
	)

inline

Definition at line 267 of file G4WentzelVIModel.hh.

 {
   G4double x = 0.0;
   if(useSecondMoment) { 
     DefineMaterial(couple);
     if(fSecondMoments) { 
       x = (*fSecondMoments)[(*theDensityIdx)[currentMaterialIndex]]
     ->Value(ekin, idx2)
     *(*theDensityFactor)[currentMaterialIndex]/(ekin*ekin);
     } else {
       x = ComputeSecondMoment(part, ekin);
     }
   }
   return x;
 }

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◆ SetFixedCut()

void G4WentzelVIModel::SetFixedCut ( G4double val )

inline

Definition at line 224 of file G4WentzelVIModel.hh.

 {
   fixedCut = val;
 }

◆ SetSingleScatteringFactor()

void G4WentzelVIModel::SetSingleScatteringFactor ( G4double val )

Definition at line 785 of file G4WentzelVIModel.cc.

 {
   if(val > 0.05) {
     ssFactor = val;
     invssFactor = 1.0/(val - 0.05);
   }
 }

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◆ SetupParticle()

void G4WentzelVIModel::SetupParticle ( const G4ParticleDefinition * p )

inlineprivate

Definition at line 213 of file G4WentzelVIModel.hh.

 {
   // Initialise mass and charge
   if(p != particle) {
     particle = p;
     wokvi->SetupParticle(p);
   }
 }

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◆ SetUseSecondMoment()

void G4WentzelVIModel::SetUseSecondMoment ( G4bool val )

inline

Definition at line 245 of file G4WentzelVIModel.hh.

 {
   useSecondMoment = val;
 }

◆ StartTracking()

void G4WentzelVIModel::StartTracking ( G4Track * track )

virtual

Reimplemented from G4VEmModel.

Definition at line 243 of file G4WentzelVIModel.cc.

 {
   SetupParticle(track->GetDynamicParticle()->GetDefinition());
 }

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◆ UseSecondMoment()

G4bool G4WentzelVIModel::UseSecondMoment ( ) const

inline

Definition at line 252 of file G4WentzelVIModel.hh.

 {
   return useSecondMoment;
 }

Member Data Documentation

◆ cosTetMaxNuc

G4double G4WentzelVIModel::cosTetMaxNuc

protected

Definition at line 151 of file G4WentzelVIModel.hh.

◆ cosThetaMax

G4double G4WentzelVIModel::cosThetaMax

private

Definition at line 176 of file G4WentzelVIModel.hh.

◆ cosThetaMin

G4double G4WentzelVIModel::cosThetaMin

private

Definition at line 175 of file G4WentzelVIModel.hh.

◆ currentCouple

const G4MaterialCutsCouple* G4WentzelVIModel::currentCouple

protected

Definition at line 155 of file G4WentzelVIModel.hh.

◆ currentCuts

const G4DataVector* G4WentzelVIModel::currentCuts

private

Definition at line 166 of file G4WentzelVIModel.hh.

◆ currentMaterial

const G4Material* G4WentzelVIModel::currentMaterial

protected

Definition at line 156 of file G4WentzelVIModel.hh.

◆ currentMaterialIndex

G4int G4WentzelVIModel::currentMaterialIndex

protected

Definition at line 154 of file G4WentzelVIModel.hh.

◆ currentRange

G4double G4WentzelVIModel::currentRange

protected

Definition at line 150 of file G4WentzelVIModel.hh.

◆ effKinEnergy

G4double G4WentzelVIModel::effKinEnergy

private

Definition at line 172 of file G4WentzelVIModel.hh.

◆ fixedCut

G4double G4WentzelVIModel::fixedCut

private

Definition at line 169 of file G4WentzelVIModel.hh.

◆ fParticleChange

G4ParticleChangeForMSC* G4WentzelVIModel::fParticleChange

private

Definition at line 165 of file G4WentzelVIModel.hh.

◆ fSecondMoments

G4PhysicsTable* G4WentzelVIModel::fSecondMoments

private

Definition at line 178 of file G4WentzelVIModel.hh.

◆ idx2

size_t G4WentzelVIModel::idx2

private

Definition at line 179 of file G4WentzelVIModel.hh.

◆ invsqrt12

G4double G4WentzelVIModel::invsqrt12

private

Definition at line 168 of file G4WentzelVIModel.hh.

◆ invssFactor

G4double G4WentzelVIModel::invssFactor

protected

Definition at line 143 of file G4WentzelVIModel.hh.

◆ isCombined

G4bool G4WentzelVIModel::isCombined

private

Definition at line 193 of file G4WentzelVIModel.hh.

◆ lambdaeff

G4double G4WentzelVIModel::lambdaeff

protected

Definition at line 149 of file G4WentzelVIModel.hh.

◆ lowEnergyLimit

G4double G4WentzelVIModel::lowEnergyLimit

private

Definition at line 190 of file G4WentzelVIModel.hh.

◆ nelments

G4int G4WentzelVIModel::nelments

private

Definition at line 185 of file G4WentzelVIModel.hh.

◆ numlimit

G4double G4WentzelVIModel::numlimit

private

Definition at line 187 of file G4WentzelVIModel.hh.

◆ particle

const G4ParticleDefinition* G4WentzelVIModel::particle

protected

Definition at line 158 of file G4WentzelVIModel.hh.

◆ preKinEnergy

G4double G4WentzelVIModel::preKinEnergy

protected

Definition at line 146 of file G4WentzelVIModel.hh.

◆ prob

std::vector<G4double> G4WentzelVIModel::prob

private

Definition at line 184 of file G4WentzelVIModel.hh.

◆ singleScatteringMode

G4bool G4WentzelVIModel::singleScatteringMode

protected

Definition at line 161 of file G4WentzelVIModel.hh.

◆ ssFactor

G4double G4WentzelVIModel::ssFactor

protected

Definition at line 142 of file G4WentzelVIModel.hh.

◆ tlimitminfix

G4double G4WentzelVIModel::tlimitminfix

protected

Definition at line 141 of file G4WentzelVIModel.hh.

◆ tPathLength

G4double G4WentzelVIModel::tPathLength

protected

Definition at line 147 of file G4WentzelVIModel.hh.

◆ useSecondMoment

G4bool G4WentzelVIModel::useSecondMoment

private

Definition at line 194 of file G4WentzelVIModel.hh.

◆ wokvi

G4WentzelOKandVIxSection* G4WentzelVIModel::wokvi

protected

Definition at line 139 of file G4WentzelVIModel.hh.

◆ xsecn

std::vector<G4double> G4WentzelVIModel::xsecn

private

Definition at line 183 of file G4WentzelVIModel.hh.

◆ xtsec

G4double G4WentzelVIModel::xtsec

private

Definition at line 182 of file G4WentzelVIModel.hh.

◆ zPathLength

G4double G4WentzelVIModel::zPathLength

protected

Definition at line 148 of file G4WentzelVIModel.hh.

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

Public Member Functions

Protected Member Functions

Protected Attributes

Private Member Functions

Private Attributes

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

◆ G4WentzelVIModel() [1/2]

◆ ~G4WentzelVIModel()

◆ G4WentzelVIModel() [2/2]

Member Function Documentation

◆ ComputeCrossSectionPerAtom()

◆ ComputeGeomPathLength()

◆ ComputeSecondMoment()

◆ ComputeTransportXSectionPerVolume()

◆ ComputeTruePathLengthLimit()

◆ ComputeTrueStepLength()

◆ DefineMaterial()

◆ GetFixedCut()

◆ GetSecondMomentTable()

◆ GetWVICrossSection()

◆ Initialise()

◆ InitialiseLocal()

◆ operator=()

◆ SampleScattering()

◆ SecondMoment()

◆ SetFixedCut()

◆ SetSingleScatteringFactor()

◆ SetupParticle()

◆ SetUseSecondMoment()

◆ StartTracking()

◆ UseSecondMoment()

Member Data Documentation

◆ cosTetMaxNuc

◆ cosThetaMax

◆ cosThetaMin

◆ currentCouple

◆ currentCuts

◆ currentMaterial

◆ currentMaterialIndex

◆ currentRange

◆ effKinEnergy

◆ fixedCut

◆ fParticleChange

◆ fSecondMoments

◆ idx2

◆ invsqrt12

◆ invssFactor

◆ isCombined

◆ lambdaeff

◆ lowEnergyLimit

◆ nelments

◆ numlimit

◆ particle

◆ preKinEnergy

◆ prob

◆ singleScatteringMode

◆ ssFactor

◆ tlimitminfix

◆ tPathLength

◆ useSecondMoment

◆ wokvi

◆ xsecn

◆ xtsec

◆ zPathLength