#include <G4MicroElecInelasticModel.hh>

Inheritance diagram for G4MicroElecInelasticModel:

Public Member Functions
	G4MicroElecInelasticModel (const G4ParticleDefinition *p=nullptr, const G4String &nam="MicroElecInelasticModel")

virtual	~G4MicroElecInelasticModel ()

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

G4double	CrossSectionPerVolume (const G4Material material, const G4ParticleDefinition p, G4double ekin, G4double emin, G4double emax) override

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

G4double	DifferentialCrossSection (G4ParticleDefinition *aParticleDefinition, G4double k, G4double energyTransfer, G4int shell)

G4double	TransferedEnergy (G4ParticleDefinition *aParticleDefinition, G4double incomingParticleEnergy, G4int shell, G4double random)

void	SelectFasterComputation (G4bool input)

G4MicroElecInelasticModel &	operator= (const G4MicroElecInelasticModel &right)=delete

	G4MicroElecInelasticModel (const G4MicroElecInelasticModel &)=delete

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 void	InitialiseForElement (const G4ParticleDefinition *, G4int Z)

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

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

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

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

virtual G4double	ChargeSquareRatio (const G4Track &)

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

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

virtual void	StartTracking (G4Track *)

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

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	FillNumberOfSecondaries (G4int &numberOfTriplets, G4int &numberOfRecoil)

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)

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

const G4Element *	SelectTargetAtom (const G4MaterialCutsCouple , const G4ParticleDefinition , G4double kineticEnergy, G4double logKineticEnergy, 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)

const G4Element *	GetCurrentElement (const G4Material *mat=nullptr) const

G4int	SelectRandomAtomNumber (const G4Material *) const

const G4Isotope *	GetCurrentIsotope (const G4Element *elm=nullptr) const

G4int	SelectIsotopeNumber (const G4Element *) const

void	SetParticleChange (G4VParticleChange , G4VEmFluctuationModel f=nullptr)

void	SetCrossSectionTable (G4PhysicsTable *, G4bool isLocal)

G4ElementData *	GetElementData ()

G4PhysicsTable *	GetCrossSectionTable ()

G4VEmFluctuationModel *	GetModelOfFluctuations ()

G4VEmAngularDistribution *	GetAngularDistribution ()

G4VEmModel *	GetTripletModel ()

void	SetTripletModel (G4VEmModel *)

void	SetAngularDistribution (G4VEmAngularDistribution *)

G4double	HighEnergyLimit () const

G4double	LowEnergyLimit () const

G4double	HighEnergyActivationLimit () const

G4double	LowEnergyActivationLimit () const

G4double	PolarAngleLimit () const

G4double	SecondaryThreshold () 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) const

void	SetPolarAngleLimit (G4double)

void	SetSecondaryThreshold (G4double)

void	SetDeexcitationFlag (G4bool val)

void	SetForceBuildTable (G4bool val)

void	SetFluctuationFlag (G4bool val)

void	SetMasterThread (G4bool val)

G4bool	IsMaster () const

void	SetUseBaseMaterials (G4bool val)

G4bool	UseBaseMaterials () const

G4double	MaxSecondaryKinEnergy (const G4DynamicParticle *dynParticle)

const G4String &	GetName () const

void	SetCurrentCouple (const G4MaterialCutsCouple *)

G4bool	IsLocked () const

void	SetLocked (G4bool)

void	SetLPMFlag (G4bool)

G4VEmModel &	operator= (const G4VEmModel &right)=delete

	G4VEmModel (const G4VEmModel &)=delete

Protected Attributes
G4ParticleChangeForGamma *	fParticleChangeForGamma

Protected Attributes inherited from G4VEmModel
G4ElementData *	fElementData = nullptr

G4VParticleChange *	pParticleChange = nullptr

G4PhysicsTable *	xSectionTable = nullptr

const G4Material *	pBaseMaterial = nullptr

const std::vector< G4double > *	theDensityFactor = nullptr

const std::vector< G4int > *	theDensityIdx = nullptr

G4double	inveplus

G4double	pFactor = 1.0

std::size_t	currentCoupleIndex = 0

std::size_t	basedCoupleIndex = 0

G4bool	lossFlucFlag = true

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 58 of file G4MicroElecInelasticModel.hh.

Constructor & Destructor Documentation

◆ G4MicroElecInelasticModel() [1/2]

G4MicroElecInelasticModel::G4MicroElecInelasticModel	(	const G4ParticleDefinition *	p = nullptr,
		const G4String &	nam = "MicroElecInelasticModel" )

Definition at line 69 of file G4MicroElecInelasticModel.cc.

:G4VEmModel(nam),isInitialised(false)
{
  nistSi = G4NistManager::Instance()->FindOrBuildMaterial("G4_Si");
  
  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
  
  if( verboseLevel>0 )
  {
    G4cout << "MicroElec inelastic model is constructed " << G4endl;
  }
  
  //Mark this model as "applicable" for atomic deexcitation
  SetDeexcitationFlag(true);
  fAtomDeexcitation = nullptr;
  fParticleChangeForGamma = nullptr;
  
  // default generator
  SetAngularDistribution(new G4DeltaAngle());
  
  // Selection of computation method
  fasterCode = true; //false;
}

◆ ~G4MicroElecInelasticModel()

G4MicroElecInelasticModel::~G4MicroElecInelasticModel ( )

virtual

Definition at line 102 of file G4MicroElecInelasticModel.cc.

{
  // Cross section
  for (auto & pos : tableData)
  {
    G4MicroElecCrossSectionDataSet* table = pos.second;
    delete table;
  }
  
  // Final state
  eVecm.clear();
  pVecm.clear();
  
}

◆ G4MicroElecInelasticModel() [2/2]

G4MicroElecInelasticModel::G4MicroElecInelasticModel ( const G4MicroElecInelasticModel & )

delete

Member Function Documentation

◆ CrossSectionPerVolume()

G4double G4MicroElecInelasticModel::CrossSectionPerVolume	(	const G4Material *	material,
		const G4ParticleDefinition *	p,
		G4double	ekin,
		G4double	emin,
		G4double	emax )

overridevirtual

Reimplemented from G4VEmModel.

Definition at line 307 of file G4MicroElecInelasticModel.cc.

{
  if (verboseLevel > 3)
    G4cout << "Calling CrossSectionPerVolume() of G4MicroElecInelasticModel" << G4endl;
  
  G4double density = material->GetTotNbOfAtomsPerVolume();
  
  // Calculate total cross section for model 
  G4double lowLim = 0;
  G4double highLim = 0;
  G4double sigma=0;
  
  const G4String& particleName = particleDefinition->GetParticleName();
  G4String nameLocal = particleName ;
  
  G4double Zeff2 = 1.0;
  G4double Mion_c2 = particleDefinition->GetPDGMass();
  
  if (Mion_c2 > proton_mass_c2)
  {
    G4ionEffectiveCharge EffCharge ;
    G4double Zeff = EffCharge.EffectiveCharge(particleDefinition, material,ekin);
    Zeff2 = Zeff*Zeff;
    
    if (verboseLevel > 3)
      G4cout << "Before scaling : " << G4endl
      << "Particle : " << nameLocal << ", mass : " << Mion_c2/proton_mass_c2 << "*mp, charge " << Zeff
      << ", Ekin (eV) = " << ekin/eV << G4endl ;
    
    ekin *= proton_mass_c2/Mion_c2 ;
    nameLocal = "proton" ;
    
    if (verboseLevel > 3)
      G4cout << "After scaling : " << G4endl
      << "Particle : " << nameLocal  << ", Ekin (eV) = " << ekin/eV << G4endl ;
  }
  
  if (material == nistSi || material->GetBaseMaterial() == nistSi)
  {    
    auto pos1 = lowEnergyLimit.find(nameLocal);
    if (pos1 != lowEnergyLimit.end())
    {
      lowLim = pos1->second;
    }
    
    auto pos2 = highEnergyLimit.find(nameLocal);
    if (pos2 != highEnergyLimit.end())
    {
      highLim = pos2->second;
    }
    
    if (ekin >= lowLim && ekin < highLim)
    {
      auto pos = tableData.find(nameLocal);      
      if (pos != tableData.end())
      {
        G4MicroElecCrossSectionDataSet* table = pos->second;
        if (table != nullptr)
        {
          sigma = table->FindValue(ekin);
        }
      }
      else
      {
        G4Exception("G4MicroElecInelasticModel::CrossSectionPerVolume","em0002",
            FatalException,"Model not applicable to particle type.");
      }
    }
    else
    {
      if (nameLocal!="e-")
      {
        // G4cout << "Particle : " << nameLocal << ", Ekin (eV) = " << ekin/eV << G4endl;
        // G4cout << "### Warning: particle energy out of bounds! ###" << G4endl;
      }
    }
    
    if (verboseLevel > 3)
    {
      G4cout << "---> Kinetic energy (eV)=" << ekin/eV << G4endl;
      G4cout << " - Cross section per Si atom (cm^2)=" << sigma*Zeff2/cm2 << G4endl;
      G4cout << " - Cross section per Si atom (cm^-1)=" << sigma*density*Zeff2/(1./cm) << G4endl;
    }
    
  } // if (SiMaterial)
  return sigma*density*Zeff2;  
}

◆ DifferentialCrossSection()

G4double G4MicroElecInelasticModel::DifferentialCrossSection	(	G4ParticleDefinition *	aParticleDefinition,
		G4double	k,
		G4double	energyTransfer,
		G4int	shell )

Definition at line 659 of file G4MicroElecInelasticModel.cc.

{
  G4double sigma = 0.;
  
  if (energyTransfer >= SiStructure.Energy(LevelIndex))
  {
    G4double valueT1 = 0;
    G4double valueT2 = 0;
    G4double valueE21 = 0;
    G4double valueE22 = 0;
    G4double valueE12 = 0;
    G4double valueE11 = 0;
    
    G4double xs11 = 0;
    G4double xs12 = 0;
    G4double xs21 = 0;
    G4double xs22 = 0;
    
    if (particleDefinition == G4Electron::ElectronDefinition())
    {
      // k should be in eV and energy transfer eV also      
      auto t2 = std::upper_bound(eTdummyVec.begin(),eTdummyVec.end(), k);
      auto t1 = t2-1;
      // The following condition avoids situations where energyTransfer >last vector element
      if (energyTransfer <= eVecm[(*t1)].back() && energyTransfer <= eVecm[(*t2)].back() )
      {
        auto e12 = std::upper_bound(eVecm[(*t1)].begin(),eVecm[(*t1)].end(), energyTransfer);
        auto e11 = e12-1;
        auto e22 = std::upper_bound(eVecm[(*t2)].begin(),eVecm[(*t2)].end(), energyTransfer);
        auto e21 = e22-1;
        
        valueT1  =*t1;
        valueT2  =*t2;
        valueE21 =*e21;
        valueE22 =*e22;
        valueE12 =*e12;
        valueE11 =*e11;
        
        xs11 = eDiffCrossSectionData[LevelIndex][valueT1][valueE11];
        xs12 = eDiffCrossSectionData[LevelIndex][valueT1][valueE12];
        xs21 = eDiffCrossSectionData[LevelIndex][valueT2][valueE21];
        xs22 = eDiffCrossSectionData[LevelIndex][valueT2][valueE22];
      }      
    }
    
    if (particleDefinition == G4Proton::ProtonDefinition())
    {
      // k should be in eV and energy transfer eV also
      auto t2 = std::upper_bound(pTdummyVec.begin(),pTdummyVec.end(), k);
      auto t1 = t2-1;
      if (energyTransfer <= pVecm[(*t1)].back() && energyTransfer <= pVecm[(*t2)].back() )
      {
        auto e12 = std::upper_bound(pVecm[(*t1)].begin(),pVecm[(*t1)].end(), energyTransfer);
        auto e11 = e12-1;
        
        auto e22 = std::upper_bound(pVecm[(*t2)].begin(),pVecm[(*t2)].end(), energyTransfer);
        auto e21 = e22-1;
        
        valueT1  =*t1;
        valueT2  =*t2;
        valueE21 =*e21;
        valueE22 =*e22;
        valueE12 =*e12;
        valueE11 =*e11;
        
        xs11 = pDiffCrossSectionData[LevelIndex][valueT1][valueE11];
        xs12 = pDiffCrossSectionData[LevelIndex][valueT1][valueE12];
        xs21 = pDiffCrossSectionData[LevelIndex][valueT2][valueE21];
        xs22 = pDiffCrossSectionData[LevelIndex][valueT2][valueE22];
      }
    }
    
    sigma = QuadInterpolator(     valueE11, valueE12,
                  valueE21, valueE22,
                  xs11, xs12,
                  xs21, xs22,
                  valueT1, valueT2,
                  k, energyTransfer);
  }
  return sigma;
}

◆ Initialise()

void G4MicroElecInelasticModel::Initialise	(	const G4ParticleDefinition *	particle,
		const G4DataVector &	)

overridevirtual

Implements G4VEmModel.

Definition at line 119 of file G4MicroElecInelasticModel.cc.

{
  
  if (verboseLevel > 3)
    G4cout << "Calling G4MicroElecInelasticModel::Initialise()" << G4endl;
  
  // Energy limits
  
  G4String fileElectron("microelec/sigma_inelastic_e_Si");
  G4String fileProton("microelec/sigma_inelastic_p_Si");
  
  G4ParticleDefinition* electronDef = G4Electron::ElectronDefinition();
  G4ParticleDefinition* protonDef = G4Proton::ProtonDefinition();
  G4String electron = electronDef->GetParticleName();
  G4String proton = protonDef->GetParticleName();;
  
  G4double scaleFactor = 1e-18 * cm *cm;
 
  const char* path = G4FindDataDir("G4LEDATA");
 
  // *** ELECTRON
  tableFile[electron] = fileElectron;  
  lowEnergyLimit[electron] = 16.7 * eV;
  highEnergyLimit[electron] = 100.0 * MeV;
  
  // Cross section  
  G4MicroElecCrossSectionDataSet* tableE = new G4MicroElecCrossSectionDataSet(new G4LogLogInterpolation, eV,scaleFactor );
  tableE->LoadData(fileElectron);
  
  tableData[electron] = tableE;
  
  // Final state
  
  std::ostringstream eFullFileName;
  
  if (fasterCode) eFullFileName << path << "/microelec/sigmadiff_cumulated_inelastic_e_Si.dat";
  else eFullFileName << path << "/microelec/sigmadiff_inelastic_e_Si.dat";
  
  std::ifstream eDiffCrossSection(eFullFileName.str().c_str());
  
  if (!eDiffCrossSection)
  {
     if (fasterCode) G4Exception("G4MicroElecInelasticModel::Initialise","em0003",
     FatalException,"Missing data file:/microelec/sigmadiff_cumulated_inelastic_e_Si.dat");
 
     else G4Exception("G4MicroElecInelasticModel::Initialise","em0003",
     FatalException,"Missing data file:/microelec/sigmadiff_inelastic_e_Si.dat");   
  }
 
  // Clear the arrays for re-initialization case (MT mode)
  // Octobre 22nd, 2014 - Melanie Raine  
  eTdummyVec.clear();
  pTdummyVec.clear();
  
  eVecm.clear();
  pVecm.clear();
  
  for (int j=0; j<6; j++)
  {
    eProbaShellMap[j].clear();
    pProbaShellMap[j].clear();
 
    eDiffCrossSectionData[j].clear();
    pDiffCrossSectionData[j].clear();
 
    eNrjTransfData[j].clear();
    pNrjTransfData[j].clear();
  }
  
  //
  eTdummyVec.push_back(0.);
  while(!eDiffCrossSection.eof())
  {
    G4double tDummy;
    G4double eDummy;
    eDiffCrossSection>>tDummy>>eDummy;
    if (tDummy != eTdummyVec.back()) eTdummyVec.push_back(tDummy);
    
    G4double tmp;
    for (int j=0; j<6; j++)
    {
      eDiffCrossSection>> tmp;
      
      eDiffCrossSectionData[j][tDummy][eDummy] = tmp;
      
      if (fasterCode)
      {
        eNrjTransfData[j][tDummy][eDiffCrossSectionData[j][tDummy][eDummy]]=eDummy;
        eProbaShellMap[j][tDummy].push_back(eDiffCrossSectionData[j][tDummy][eDummy]);
      }
      else
      {
      // SI - only if eof is not reached !
    if (!eDiffCrossSection.eof()) eDiffCrossSectionData[j][tDummy][eDummy]*=scaleFactor;
    eVecm[tDummy].push_back(eDummy);
      }
      
    }
  }
  //
  
  // *** PROTON   
  tableFile[proton] = fileProton;  
  lowEnergyLimit[proton] = 50. * keV;
  highEnergyLimit[proton] = 10. * GeV;
  
  // Cross section
  G4MicroElecCrossSectionDataSet* tableP = new G4MicroElecCrossSectionDataSet(new G4LogLogInterpolation, eV,scaleFactor );
  tableP->LoadData(fileProton);
  tableData[proton] = tableP;
  
  // Final state  
  std::ostringstream pFullFileName;
  
  if (fasterCode) pFullFileName << path << "/microelec/sigmadiff_cumulated_inelastic_p_Si.dat";
  else pFullFileName << path << "/microelec/sigmadiff_inelastic_p_Si.dat";
 
  std::ifstream pDiffCrossSection(pFullFileName.str().c_str());
  
  if (!pDiffCrossSection)
  {
    if (fasterCode) G4Exception("G4MicroElecInelasticModel::Initialise","em0003",
      FatalException,"Missing data file:/microelec/sigmadiff_cumulated_inelastic_p_Si.dat");
 
    else G4Exception("G4MicroElecInelasticModel::Initialise","em0003",
      FatalException,"Missing data file:/microelec/sigmadiff_inelastic_p_Si.dat");
  }
  
  pTdummyVec.push_back(0.);
  while(!pDiffCrossSection.eof())
  {
    G4double tDummy;
    G4double eDummy;
    pDiffCrossSection>>tDummy>>eDummy;
    if (tDummy != pTdummyVec.back()) pTdummyVec.push_back(tDummy);
    for (int j=0; j<6; j++)
    {
      pDiffCrossSection>>pDiffCrossSectionData[j][tDummy][eDummy];
      
      if (fasterCode)
      {
        pNrjTransfData[j][tDummy][pDiffCrossSectionData[j][tDummy][eDummy]]=eDummy;
        pProbaShellMap[j][tDummy].push_back(pDiffCrossSectionData[j][tDummy][eDummy]);
      }
      else
      {
    // SI - only if eof is not reached !
    if (!pDiffCrossSection.eof()) pDiffCrossSectionData[j][tDummy][eDummy]*=scaleFactor;
    pVecm[tDummy].push_back(eDummy);
      }
    }
  }
  
  if (particle==electronDef)
  {
    SetLowEnergyLimit(lowEnergyLimit[electron]);
    SetHighEnergyLimit(highEnergyLimit[electron]);
  }
  
  if (particle==protonDef)
  {
    SetLowEnergyLimit(lowEnergyLimit[proton]);
    SetHighEnergyLimit(highEnergyLimit[proton]);
  }
  
  if( verboseLevel>0 )
  {
    G4cout << "MicroElec Inelastic model is initialized " << G4endl
    << "Energy range: "
    << LowEnergyLimit() / keV << " keV - "
    << HighEnergyLimit() / MeV << " MeV for "
    << particle->GetParticleName()
       << " with mass (amu) " << particle->GetPDGMass()/proton_mass_c2
       << " and charge " << particle->GetPDGCharge()
    << G4endl << G4endl ;
  }
  
  //
  fAtomDeexcitation  = G4LossTableManager::Instance()->AtomDeexcitation();
  
  if (isInitialised) { return; }
  fParticleChangeForGamma = GetParticleChangeForGamma();
  isInitialised = true;
}

◆ operator=()

G4MicroElecInelasticModel & G4MicroElecInelasticModel::operator= ( const G4MicroElecInelasticModel & right )

delete

◆ SampleSecondaries()

void G4MicroElecInelasticModel::SampleSecondaries	(	std::vector< G4DynamicParticle * > *	fvect,
		const G4MaterialCutsCouple *	couple,
		const G4DynamicParticle *	particle,
		G4double	tmin,
		G4double	maxEnergy )

overridevirtual

Implements G4VEmModel.

Definition at line 401 of file G4MicroElecInelasticModel.cc.

{
  
  if (verboseLevel > 3)
    G4cout << "Calling SampleSecondaries() of G4MicroElecInelasticModel" << G4endl;
  
  G4double lowLim = 0;
  G4double highLim = 0;
  
  G4double ekin = particle->GetKineticEnergy();
  G4double k = ekin ;
  
  G4ParticleDefinition* PartDef = particle->GetDefinition();
  const G4String& particleName = PartDef->GetParticleName();
  G4String nameLocal2 = particleName ;
  G4double particleMass = particle->GetDefinition()->GetPDGMass();
  
  if (particleMass > proton_mass_c2)
  {
    k *= proton_mass_c2/particleMass ;
    PartDef = G4Proton::ProtonDefinition();
    nameLocal2 = "proton" ;
  }
  
  auto pos1 = lowEnergyLimit.find(nameLocal2); 
  if (pos1 != lowEnergyLimit.end())
  {
    lowLim = pos1->second;
  }
  
  auto pos2 = highEnergyLimit.find(nameLocal2);
  if (pos2 != highEnergyLimit.end())
  {
    highLim = pos2->second;
  }
  
  if (k >= lowLim && k < highLim)
  {
    G4ParticleMomentum primaryDirection = particle->GetMomentumDirection();
    G4double totalEnergy = ekin + particleMass;
    G4double pSquare = ekin * (totalEnergy + particleMass);
    G4double totalMomentum = std::sqrt(pSquare);
    
    G4int Shell = 0;
    
    /* if (!fasterCode)*/ Shell = RandomSelect(k,nameLocal2);
    
    // SI: The following protection is necessary to avoid infinite loops :
    //  sigmadiff_ionisation_e_born.dat has non zero partial xs at 18 eV for shell 3 (ionizationShell ==2)
    //  sigmadiff_cumulated_ionisation_e_born.dat has zero cumulated partial xs at 18 eV for shell 3 (ionizationShell ==2)
    //  this is due to the fact that the max allowed transfered energy is (18+10.79)/2=17.025 eV and only transfered energies
    //  strictly above this value have non zero partial xs in sigmadiff_ionisation_e_born.dat (starting at trans = 17.12 eV)    
    
    G4double bindingEnergy = SiStructure.Energy(Shell);
    
    if (verboseLevel > 3)
    {
      G4cout << "---> Kinetic energy (eV)=" << k/eV << G4endl ;
      G4cout << "Shell: " << Shell << ", energy: " << bindingEnergy/eV << G4endl;
    }
    
    // sample deexcitation
    std::size_t secNumberInit = 0;  // need to know at a certain point the energy of secondaries
    std::size_t secNumberFinal = 0; // So I'll make the difference and then sum the energies
    
    //SI: additional protection if tcs interpolation method is modified
    if (k<bindingEnergy) return;
    
    G4int Z = 14;
    
    if(fAtomDeexcitation && Shell > 2) {
      
      G4AtomicShellEnumerator as = fKShell;
      
      if (Shell == 4)
      {
        as = G4AtomicShellEnumerator(1);
      }
      else if (Shell == 3)
      {
        as = G4AtomicShellEnumerator(3);
      }
      
      const G4AtomicShell* shell = fAtomDeexcitation->GetAtomicShell(Z, as);
      secNumberInit = fvect->size();
      fAtomDeexcitation->GenerateParticles(fvect, shell, Z, 0, 0);
      secNumberFinal = fvect->size();
    }
    
    G4double secondaryKinetic=-1000*eV;
 
    if (!fasterCode)
    {
      secondaryKinetic = RandomizeEjectedElectronEnergy(PartDef,k,Shell);
    }
    else
    {
      secondaryKinetic = RandomizeEjectedElectronEnergyFromCumulatedDcs(PartDef,k,Shell);
    }
    
    if (verboseLevel > 3)
    {
      G4cout << "Ionisation process" << G4endl;
      G4cout << "Shell: " << Shell << " Kin. energy (eV)=" << k/eV
      << " Sec. energy (eV)=" << secondaryKinetic/eV << G4endl;
    }
    
    G4ThreeVector deltaDirection =
    GetAngularDistribution()->SampleDirectionForShell(particle, secondaryKinetic,
                                                      Z, Shell,
                                                      couple->GetMaterial());
    
    if (particle->GetDefinition() == G4Electron::ElectronDefinition())
    {
      G4double deltaTotalMomentum = std::sqrt(secondaryKinetic*(secondaryKinetic + 2.*electron_mass_c2 ));    
      G4double finalPx = totalMomentum*primaryDirection.x() - deltaTotalMomentum*deltaDirection.x();
      G4double finalPy = totalMomentum*primaryDirection.y() - deltaTotalMomentum*deltaDirection.y();
      G4double finalPz = totalMomentum*primaryDirection.z() - deltaTotalMomentum*deltaDirection.z();
      G4double finalMomentum = std::sqrt(finalPx*finalPx + finalPy*finalPy + finalPz*finalPz);
      finalPx /= finalMomentum;
      finalPy /= finalMomentum;
      finalPz /= finalMomentum;
      
      G4ThreeVector direction;
      direction.set(finalPx,finalPy,finalPz);
      
      fParticleChangeForGamma->ProposeMomentumDirection(direction.unit()) ;
    }
    else 
      fParticleChangeForGamma->ProposeMomentumDirection(primaryDirection) ;
    
    // note that secondaryKinetic is the energy of the delta ray, not of all secondaries.
    G4double deexSecEnergy = 0;
    for (std::size_t j=secNumberInit; j < secNumberFinal; ++j) {
      deexSecEnergy = deexSecEnergy + (*fvect)[j]->GetKineticEnergy();}
    
    fParticleChangeForGamma->SetProposedKineticEnergy(ekin-bindingEnergy-secondaryKinetic);
    fParticleChangeForGamma->ProposeLocalEnergyDeposit(bindingEnergy-deexSecEnergy);
    
    if (secondaryKinetic>0)
    {
      G4DynamicParticle* dp = new G4DynamicParticle (G4Electron::Electron(),deltaDirection,secondaryKinetic) ;
      fvect->push_back(dp);
    }     
  }
}

◆ SelectFasterComputation()

void G4MicroElecInelasticModel::SelectFasterComputation ( G4bool input )

inline

Definition at line 152 of file G4MicroElecInelasticModel.hh.

{ 
    fasterCode = input; 
}

◆ TransferedEnergy()

G4double G4MicroElecInelasticModel::TransferedEnergy	(	G4ParticleDefinition *	aParticleDefinition,
		G4double	incomingParticleEnergy,
		G4int	shell,
		G4double	random )

Definition at line 876 of file G4MicroElecInelasticModel.cc.

{
  G4double nrj = 0.;
 
  G4double valueK1 = 0;
  G4double valueK2 = 0;
  G4double valuePROB21 = 0;
  G4double valuePROB22 = 0;
  G4double valuePROB12 = 0;
  G4double valuePROB11 = 0;
 
  G4double nrjTransf11 = 0;
  G4double nrjTransf12 = 0;
  G4double nrjTransf21 = 0;
  G4double nrjTransf22 = 0;
  
  G4double maximumEnergyTransfer1 = 0;  
  G4double maximumEnergyTransfer2 = 0;  
  G4double maximumEnergyTransferP = 4.* (electron_mass_c2 / proton_mass_c2) * k;
  G4double bindingEnergy = SiStructure.Energy(ionizationLevelIndex)*1e6;
 
  if (particleDefinition == G4Electron::ElectronDefinition())
  {
    // k should be in eV
    auto k2 = std::upper_bound(eTdummyVec.begin(),
                   eTdummyVec.end(),
                   k);
    auto k1 = k2 - 1;
 
    /*
     G4cout << "----> k=" << k
     << " " << *k1
     << " " << *k2
     << " " << random
     << " " << ionizationLevelIndex
     << " " << eProbaShellMap[ionizationLevelIndex][(*k1)].back()
     << " " << eProbaShellMap[ionizationLevelIndex][(*k2)].back()
     << G4endl;
     */
 
    // SI : the following condition avoids situations where random >last vector element
    if (random <= eProbaShellMap[ionizationLevelIndex][(*k1)].back()
        && random <= eProbaShellMap[ionizationLevelIndex][(*k2)].back())
    {
      auto prob12 =
          std::upper_bound(eProbaShellMap[ionizationLevelIndex][(*k1)].begin(),
                           eProbaShellMap[ionizationLevelIndex][(*k1)].end(),
                           random);
      auto prob11 = prob12 - 1;
      auto prob22 =
          std::upper_bound(eProbaShellMap[ionizationLevelIndex][(*k2)].begin(),
                           eProbaShellMap[ionizationLevelIndex][(*k2)].end(),
                           random);
      auto prob21 = prob22 - 1;
 
      valueK1 = *k1;
      valueK2 = *k2;
      valuePROB21 = *prob21;
      valuePROB22 = *prob22;
      valuePROB12 = *prob12;
      valuePROB11 = *prob11;
      
      // The following condition avoid getting transfered energy < binding energy and forces cumxs = 1 for maximum energy transfer.
      if(valuePROB11 == 0) nrjTransf11 = bindingEnergy; 
      else nrjTransf11 = eNrjTransfData[ionizationLevelIndex][valueK1][valuePROB11];
      if(valuePROB12 == 1) 
      { 
    if ((valueK1+bindingEnergy)/2. > valueK1) maximumEnergyTransfer1=valueK1;
        else maximumEnergyTransfer1 = (valueK1+bindingEnergy)/2.;
    
    nrjTransf12 = maximumEnergyTransfer1;
      }
      else nrjTransf12 = eNrjTransfData[ionizationLevelIndex][valueK1][valuePROB12];
 
      if(valuePROB21 == 0) nrjTransf21 = bindingEnergy;
      else nrjTransf21 = eNrjTransfData[ionizationLevelIndex][valueK2][valuePROB21];
      if(valuePROB22 == 1) 
      { 
    if ((valueK2+bindingEnergy)/2. > valueK2) maximumEnergyTransfer2=valueK2;
        else maximumEnergyTransfer2 = (valueK2+bindingEnergy)/2.;
    
    nrjTransf22 = maximumEnergyTransfer2;
      }
      else
    nrjTransf22 = eNrjTransfData[ionizationLevelIndex][valueK2][valuePROB22];
    }
    // Avoids cases where cum xs is zero for k1 and is not for k2 (with always k1<k2)
    if (random > eProbaShellMap[ionizationLevelIndex][(*k1)].back())
    {
      auto prob22 =
          std::upper_bound(eProbaShellMap[ionizationLevelIndex][(*k2)].begin(),
                           eProbaShellMap[ionizationLevelIndex][(*k2)].end(),
                           random);
 
      auto prob21 = prob22 - 1;
 
      valueK1 = *k1;
      valueK2 = *k2;
      valuePROB21 = *prob21;
      valuePROB22 = *prob22;
 
      nrjTransf21 = eNrjTransfData[ionizationLevelIndex][valueK2][valuePROB21];
      nrjTransf22 = eNrjTransfData[ionizationLevelIndex][valueK2][valuePROB22];
 
      G4double interpolatedvalue2 = Interpolate(valuePROB21,
                                                valuePROB22,
                                                random,
                                                nrjTransf21,
                                                nrjTransf22);
 
      // zeros are explicitly set
      G4double value = Interpolate(valueK1, valueK2, k, 0., interpolatedvalue2);     
      return value;
    }
  }
  //
  else if (particleDefinition == G4Proton::ProtonDefinition())
  {
    // k should be in eV
    auto k2 = std::upper_bound(pTdummyVec.begin(),
                   pTdummyVec.end(),
                   k);
 
    auto k1 = k2 - 1;
 
    /*
     G4cout << "----> k=" << k
     << " " << *k1
     << " " << *k2
     << " " << random
     << " " << ionizationLevelIndex
     << " " << pProbaShellMap[ionizationLevelIndex][(*k1)].back()
     << " " << pProbaShellMap[ionizationLevelIndex][(*k2)].back()
     << G4endl;
     */
 
    // SI : the following condition avoids situations where random > last vector element,
    //      for eg. when the last element is zero
    if (random <= pProbaShellMap[ionizationLevelIndex][(*k1)].back()
        && random <= pProbaShellMap[ionizationLevelIndex][(*k2)].back())
    {
      auto prob12 =
          std::upper_bound(pProbaShellMap[ionizationLevelIndex][(*k1)].begin(),
                           pProbaShellMap[ionizationLevelIndex][(*k1)].end(),
                           random);
 
      auto prob11 = prob12 - 1;
 
      auto prob22 =
    std::upper_bound(pProbaShellMap[ionizationLevelIndex][(*k2)].begin(),
             pProbaShellMap[ionizationLevelIndex][(*k2)].end(),
             random);
      
      auto prob21 = prob22 - 1;
 
      valueK1 = *k1;
      valueK2 = *k2;
      valuePROB21 = *prob21;
      valuePROB22 = *prob22;
      valuePROB12 = *prob12;
      valuePROB11 = *prob11;
 
      // The following condition avoid getting transfered energy < binding energy and forces cumxs = 1 for maximum energy transfer.
      if(valuePROB11 == 0) nrjTransf11 = bindingEnergy; 
      else nrjTransf11 = pNrjTransfData[ionizationLevelIndex][valueK1][valuePROB11];
      if(valuePROB12 == 1) nrjTransf12 = maximumEnergyTransferP;
      else nrjTransf12 = pNrjTransfData[ionizationLevelIndex][valueK1][valuePROB12];
      if(valuePROB21 == 0) nrjTransf21 = bindingEnergy;
      else nrjTransf21 = pNrjTransfData[ionizationLevelIndex][valueK2][valuePROB21];
      if(valuePROB22 == 1) nrjTransf22 = maximumEnergyTransferP;
      else nrjTransf22 = pNrjTransfData[ionizationLevelIndex][valueK2][valuePROB22];
 
    }
 
    // Avoids cases where cum xs is zero for k1 and is not for k2 (with always k1<k2)
    if (random > pProbaShellMap[ionizationLevelIndex][(*k1)].back())
    {
      auto prob22 =
          std::upper_bound(pProbaShellMap[ionizationLevelIndex][(*k2)].begin(),
                           pProbaShellMap[ionizationLevelIndex][(*k2)].end(),
                           random);
 
      auto prob21 = prob22 - 1;
 
      valueK1 = *k1;
      valueK2 = *k2;
      valuePROB21 = *prob21;
      valuePROB22 = *prob22;
 
      nrjTransf21 = pNrjTransfData[ionizationLevelIndex][valueK2][valuePROB21];
      nrjTransf22 = pNrjTransfData[ionizationLevelIndex][valueK2][valuePROB22];
 
      G4double interpolatedvalue2 = Interpolate(valuePROB21,
                                                valuePROB22,
                                                random,
                                                nrjTransf21,
                                                nrjTransf22);
 
      // zeros are explicitly set
      G4double value = Interpolate(valueK1, valueK2, k, 0., interpolatedvalue2);
     
      return value;
    }
  }
  // End electron and proton cases
 
  G4double nrjTransfProduct = nrjTransf11 * nrjTransf12 * nrjTransf21
      * nrjTransf22;
 
  if (nrjTransfProduct != 0.)
  {
    nrj = QuadInterpolator(valuePROB11,
                           valuePROB12,
                           valuePROB21,
                           valuePROB22,
                           nrjTransf11,
                           nrjTransf12,
                           nrjTransf21,
                           nrjTransf22,
                           valueK1,
                           valueK2,
                           k,
                           random);
  }
 
  return nrj;
}

Member Data Documentation

◆ fParticleChangeForGamma

G4ParticleChangeForGamma* G4MicroElecInelasticModel::fParticleChangeForGamma

protected

Definition at line 91 of file G4MicroElecInelasticModel.hh.

Referenced by G4MicroElecInelasticModel(), Initialise(), and SampleSecondaries().

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

Public Member Functions

Protected Attributes

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

◆ G4MicroElecInelasticModel() [1/2]

◆ ~G4MicroElecInelasticModel()

◆ G4MicroElecInelasticModel() [2/2]

Member Function Documentation

◆ CrossSectionPerVolume()

◆ DifferentialCrossSection()

◆ Initialise()

◆ operator=()

◆ SampleSecondaries()

◆ SelectFasterComputation()

◆ TransferedEnergy()

Member Data Documentation

◆ fParticleChangeForGamma