#include <G4LivermoreBremsstrahlungModel.hh>

Inheritance diagram for G4LivermoreBremsstrahlungModel:

Collaboration diagram for G4LivermoreBremsstrahlungModel:

Public Member Functions
	G4LivermoreBremsstrahlungModel (const G4ParticleDefinition *p=0, const G4String &nam="LowEnBrem")

virtual	~G4LivermoreBremsstrahlungModel ()

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

virtual void	InitialiseForElement (const G4ParticleDefinition *, G4int Z)

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

void	SetBicubicInterpolationFlag (G4bool)

Public Member Functions inherited from G4eBremsstrahlungRelModel
	G4eBremsstrahlungRelModel (const G4ParticleDefinition *p=0, const G4String &nam="eBremLPM")

virtual	~G4eBremsstrahlungRelModel ()

virtual void	InitialiseLocal (const G4ParticleDefinition , G4VEmModel masterModel) override

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

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

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

virtual G4double	MinPrimaryEnergy (const G4Material , const G4ParticleDefinition , G4double cut) override

void	SetLPMconstant (G4double val)

G4double	LPMconstant () const

void	SetLowestKinEnergy (G4double)

G4double	LowestKinEnergy () const

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

virtual	~G4VEmModel ()

virtual void	InitialiseForMaterial (const G4ParticleDefinition , const G4Material )

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

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

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	MinEnergyCut (const G4ParticleDefinition , const G4MaterialCutsCouple )

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 * > *)

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

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

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

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

G4int	SelectIsotopeNumber (const G4Element *)

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

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

G4int	SelectRandomAtomNumber (const G4Material *)

void	SetParticleChange (G4VParticleChange , G4VEmFluctuationModel f=nullptr)

void	SetCrossSectionTable (G4PhysicsTable *, G4bool isLocal)

G4ElementData *	GetElementData ()

G4PhysicsTable *	GetCrossSectionTable ()

G4VEmFluctuationModel *	GetModelOfFluctuations ()

G4VEmAngularDistribution *	GetAngularDistribution ()

void	SetAngularDistribution (G4VEmAngularDistribution *)

G4double	HighEnergyLimit () const

G4double	LowEnergyLimit () const

G4double	HighEnergyActivationLimit () const

G4double	LowEnergyActivationLimit () const

G4double	PolarAngleLimit () const

G4double	SecondaryThreshold () const

G4bool	LPMFlag () const

G4bool	DeexcitationFlag () const

G4bool	ForceBuildTableFlag () const

G4bool	UseAngularGeneratorFlag () const

void	SetAngularGeneratorFlag (G4bool)

void	SetHighEnergyLimit (G4double)

void	SetLowEnergyLimit (G4double)

void	SetActivationHighEnergyLimit (G4double)

void	SetActivationLowEnergyLimit (G4double)

G4bool	IsActive (G4double kinEnergy)

void	SetPolarAngleLimit (G4double)

void	SetSecondaryThreshold (G4double)

void	SetLPMFlag (G4bool val)

void	SetDeexcitationFlag (G4bool val)

void	SetForceBuildTable (G4bool val)

void	SetMasterThread (G4bool val)

G4bool	IsMaster () const

G4double	MaxSecondaryKinEnergy (const G4DynamicParticle *dynParticle)

const G4String &	GetName () const

void	SetCurrentCouple (const G4MaterialCutsCouple *)

const G4Element *	GetCurrentElement () const

const G4Isotope *	GetCurrentIsotope () const

G4bool	IsLocked () const

void	SetLocked (G4bool)

Protected Member Functions
virtual G4double	ComputeDXSectionPerAtom (G4double gammaEnergy)

virtual G4String	DirectoryPath () const

Protected Member Functions inherited from G4eBremsstrahlungRelModel
void	SetCurrentElement (G4int)

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 *)

Additional Inherited Members
Protected Attributes inherited from G4eBremsstrahlungRelModel
G4NistManager *	nist

const G4ParticleDefinition *	particle

G4ParticleDefinition *	theGamma

G4ParticleChangeForLoss *	fParticleChange

G4double	bremFactor

G4double	particleMass

G4double	kinEnergy

G4double	totalEnergy

G4double	densityFactor

G4double	densityCorr

G4int	currentZ

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

Detailed Description

Definition at line 61 of file G4LivermoreBremsstrahlungModel.hh.

Constructor & Destructor Documentation

G4LivermoreBremsstrahlungModel::G4LivermoreBremsstrahlungModel	(	const G4ParticleDefinition *	p = `0`,
		const G4String &	nam = `"LowEnBrem"`
	)

Definition at line 83 of file G4LivermoreBremsstrahlungModel.cc.

   : G4eBremsstrahlungRelModel(p,nam),useBicubicInterpolation(false)
 {
   SetLowEnergyLimit(10.0*eV);
   SetLPMFlag(false);
   nwarn = 0;
   idx = idy = 0;
   SetAngularDistribution(new G4Generator2BS());
 }

Here is the call graph for this function:

G4LivermoreBremsstrahlungModel::~G4LivermoreBremsstrahlungModel ( )

virtual

Definition at line 96 of file G4LivermoreBremsstrahlungModel.cc.

 {
   if(IsMaster()) {
     for(size_t i=0; i<101; ++i) { 
       if(dataSB[i]) {
     delete dataSB[i]; 
     dataSB[i] = 0;
       } 
     }
   }
 }

Here is the call graph for this function:

Member Function Documentation

G4double G4LivermoreBremsstrahlungModel::ComputeDXSectionPerAtom ( G4double gammaEnergy )

protectedvirtual

Reimplemented from G4eBremsstrahlungRelModel.

Definition at line 196 of file G4LivermoreBremsstrahlungModel.cc.

 {
 
   if(gammaEnergy < 0.0 || kinEnergy <= 0.0) { return 0.0; }
   G4double x = gammaEnergy/kinEnergy;
   G4double y = G4Log(kinEnergy/MeV);
   G4int Z = G4lrint(currentZ);
 
   //G4cout << "G4LivermoreBremsstrahlungModel::ComputeDXSectionPerAtom Z= " << Z
   //     << " x= " << x << " y= " << y << " " << dataSB[Z] << G4endl;
   if(!dataSB[Z]) { InitialiseForElement(0, Z); }
   /*
     G4ExceptionDescription ed;
     ed << "Bremsstrahlung data for Z= " << Z
        << " are not initialized!";
     G4Exception("G4LivermoreBremsstrahlungModel::ComputeDXSectionPerAtom()",
                 "em0005", FatalException, ed,
         "G4LEDATA version should be G4EMLOW6.23 or later.");
   }
   */
   G4double invb2 = 
     totalEnergy*totalEnergy/(kinEnergy*(kinEnergy + 2*particleMass));
   G4double cross = dataSB[Z]->Value(x,y,idx,idy)*invb2*millibarn/bremFactor;
   
   if(!isElectron) {
     G4double invbeta1 = sqrt(invb2);
     G4double e2 = kinEnergy - gammaEnergy;
     if(e2 > 0.0) {
       G4double invbeta2 = (e2 + particleMass)/sqrt(e2*(e2 + 2*particleMass));
       G4double xxx = alpha*currentZ*(invbeta1 - invbeta2);
       if(xxx < expnumlim) { cross = 0.0; }
       else { cross *= G4Exp(xxx); }
     } else {
       cross = 0.0;
     }
   }
   
   return cross;
 }

Here is the call graph for this function:

G4String G4LivermoreBremsstrahlungModel::DirectoryPath ( ) const

protectedvirtual

Definition at line 139 of file G4LivermoreBremsstrahlungModel.cc.

 {
   return "/livermore/brem/br";
 }

void G4LivermoreBremsstrahlungModel::Initialise	(	const G4ParticleDefinition *	p,
		const G4DataVector &	cuts
	)

virtual

Reimplemented from G4eBremsstrahlungRelModel.

Definition at line 110 of file G4LivermoreBremsstrahlungModel.cc.

 {
   // Access to elements
   if(IsMaster()) {
 
     // check environment variable
     // Build the complete string identifying the file with the data set
     char* path = getenv("G4LEDATA");
 
     const G4ElementTable* theElmTable = G4Element::GetElementTable();
     size_t numOfElm = G4Element::GetNumberOfElements();
     if(numOfElm > 0) {
       for(size_t i=0; i<numOfElm; ++i) {
     G4int Z = G4int(((*theElmTable)[i])->GetZ());
     if(Z < 1)        { Z = 1; }
     else if(Z > 100) { Z = 100; }
     //G4cout << "Z= " << Z << G4endl;
     // Initialisation
     if(!dataSB[Z]) { ReadData(Z, path); }
       }
     }
   }
 
   G4eBremsstrahlungRelModel::Initialise(p, cuts);
 }

Here is the call graph for this function:

void G4LivermoreBremsstrahlungModel::InitialiseForElement	(	const G4ParticleDefinition *	,
		G4int	Z
	)

virtual

Reimplemented from G4VEmModel.

Definition at line 374 of file G4LivermoreBremsstrahlungModel.cc.

 {
   G4AutoLock l(&LivermoreBremsstrahlungModelMutex);
   //G4cout << "G4LivermoreBremsstrahlungModel::InitialiseForElement Z= " 
   //<< Z << G4endl;
   if(!dataSB[Z]) { ReadData(Z); }
   l.unlock();
 }

Here is the call graph for this function:

Here is the caller graph for this function:

void G4LivermoreBremsstrahlungModel::SampleSecondaries	(	std::vector< G4DynamicParticle * > *	vdp,
		const G4MaterialCutsCouple *	couple,
		const G4DynamicParticle *	dp,
		G4double	cutEnergy,
		G4double	maxEnergy
	)

virtual

Reimplemented from G4eBremsstrahlungRelModel.

Definition at line 239 of file G4LivermoreBremsstrahlungModel.cc.

 {
   G4double kineticEnergy = dp->GetKineticEnergy();
   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());
   G4int Z = G4int(currentZ);
 
   totalEnergy = kineticEnergy + particleMass;
   densityCorr = densityFactor*totalEnergy*totalEnergy;
   G4double totMomentum = sqrt(kineticEnergy*(totalEnergy + electron_mass_c2));
   /*
   G4cout << "G4LivermoreBremsstrahlungModel::SampleSecondaries E(MeV)= " 
      << kineticEnergy/MeV
      << " Z= " << Z << " cut(MeV)= " << cut/MeV 
      << " emax(MeV)= " << emax/MeV << " corr= " << densityCorr << G4endl;
   */
   G4double xmin = G4Log(cut*cut + densityCorr);
   G4double xmax = G4Log(emax*emax  + densityCorr);
   G4double y = G4Log(kineticEnergy/MeV);
 
   G4double gammaEnergy, v; 
 
   // majoranta
   G4double x0 = cut/kineticEnergy;
   G4double vmax = dataSB[Z]->Value(x0, y, idx, idy)*1.02;
   //  G4double invbeta1 = 0;
 
   // majoranta corrected for e-
   if(isElectron && x0 < 0.97 && 
      ((kineticEnergy > epeaklimit) || (kineticEnergy < elowlimit))) {
     G4double ylim = std::min(ylimit[Z],1.1*dataSB[Z]->Value(0.97,y,idx,idy));
     if(ylim > vmax) { vmax = ylim; }
   }
   if(x0 < 0.05) { vmax *= 1.2; }
 
   //G4cout<<"y= "<<y<<" xmin= "<<xmin<<" xmax= "<<xmax
   //<<" vmax= "<<vmax<<G4endl;
   //  G4int ncount = 0;
   do {
     //++ncount;
     G4double x = G4Exp(xmin + G4UniformRand()*(xmax - xmin)) - densityCorr;
     if(x < 0.0) { x = 0.0; }
     gammaEnergy = sqrt(x);
     G4double x1 = gammaEnergy/kineticEnergy;
     v = dataSB[Z]->Value(x1, y, idx, idy);
 
     // correction for positrons        
     if(!isElectron) {
       G4double e1 = kineticEnergy - cut;
       G4double invbeta1 = (e1 + particleMass)/sqrt(e1*(e1 + 2*particleMass));
       G4double e2 = kineticEnergy - gammaEnergy;
       G4double invbeta2 = (e2 + particleMass)/sqrt(e2*(e2 + 2*particleMass));
       G4double xxx = twopi*fine_structure_const*currentZ*(invbeta1 - invbeta2);
 
       if(xxx < expnumlim) { v = 0.0; }
       else { v *= G4Exp(xxx); }
     }
    
     if (v > 1.05*vmax && nwarn < 5) {
       ++nwarn;
       G4ExceptionDescription ed;
       ed << "### G4LivermoreBremsstrahlungModel Warning: Majoranta exceeded! "
      << v << " > " << vmax << " by " << v/vmax
      << " Egamma(MeV)= " << gammaEnergy
      << " Ee(MeV)= " << kineticEnergy
      << " Z= " << Z << "  " << particle->GetParticleName();
      
       if ( 20 == nwarn ) {
     ed << "\n ### G4LivermoreBremsstrahlungModel Warnings stopped";
       }
       G4Exception("G4LivermoreBremsstrahlungModel::SampleScattering","em0044",
           JustWarning, ed,"");
 
     }
   } while (v < vmax*G4UniformRand());
 
   //
   // angles of the emitted gamma. ( Z - axis along the parent particle)
   // use general interface
   //
 
   G4ThreeVector gammaDirection = 
     GetAngularDistribution()->SampleDirection(dp, totalEnergy-gammaEnergy,
                           Z, couple->GetMaterial());
 
   // create G4DynamicParticle object for the Gamma
   G4DynamicParticle* gamma = 
     new G4DynamicParticle(theGamma,gammaDirection,gammaEnergy);
   vdp->push_back(gamma);
   
   G4ThreeVector direction = (totMomentum*dp->GetMomentumDirection()
                  - gammaEnergy*gammaDirection).unit();
 
   /*
   G4cout << "### G4SBModel: v= "
      << " Eg(MeV)= " << gammaEnergy
      << " Ee(MeV)= " << kineticEnergy
      << " DirE " << direction << " DirG " << gammaDirection
      << G4endl;
   */
   // 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);
   }
 }

Here is the call graph for this function:

void G4LivermoreBremsstrahlungModel::SetBicubicInterpolationFlag ( G4bool val )

inline

Definition at line 106 of file G4LivermoreBremsstrahlungModel.hh.

 {
   useBicubicInterpolation = val;
 }

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

geant4.10.03.p01/source/processes/electromagnetic/lowenergy/include/G4LivermoreBremsstrahlungModel.hh
geant4.10.03.p01/source/processes/electromagnetic/lowenergy/src/G4LivermoreBremsstrahlungModel.cc

Public Member Functions

Protected Member Functions

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation