#include <G4BetheBlochModel.hh>

Inheritance diagram for G4BetheBlochModel:

Collaboration diagram for G4BetheBlochModel:

Public Member Functions
	G4BetheBlochModel (const G4ParticleDefinition *p=nullptr, const G4String &nam="BetheBloch")

virtual	~G4BetheBlochModel ()

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

virtual G4double	MinEnergyCut (const G4ParticleDefinition , const G4MaterialCutsCouple couple)

virtual G4double	ComputeCrossSectionPerElectron (const G4ParticleDefinition *, G4double kineticEnergy, G4double cutEnergy, G4double maxEnergy)

virtual G4double	ComputeCrossSectionPerAtom (const G4ParticleDefinition *, G4double kineticEnergy, G4double Z, G4double A, G4double cutEnergy, G4double maxEnergy)

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

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

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

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

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

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

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	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 void	StartTracking (G4Track *)

virtual G4double	Value (const G4MaterialCutsCouple , const G4ParticleDefinition , G4double kineticEnergy)

virtual G4double	MinPrimaryEnergy (const G4Material , const G4ParticleDefinition , G4double cut=0.0)

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
virtual G4double	MaxSecondaryEnergy (const G4ParticleDefinition *, G4double kinEnergy)

G4double	GetChargeSquareRatio () const

void	SetChargeSquareRatio (G4double val)

Protected Member Functions inherited from G4VEmModel
G4ParticleChangeForLoss *	GetParticleChangeForLoss ()

G4ParticleChangeForGamma *	GetParticleChangeForGamma ()

const G4MaterialCutsCouple *	CurrentCouple () const

void	SetCurrentElement (const G4Element *)

Private Member Functions
void	SetupParameters ()

void	SetParticle (const G4ParticleDefinition *p)

void	SetGenericIon (const G4ParticleDefinition *p)

G4BetheBlochModel &	operator= (const G4BetheBlochModel &right)

	G4BetheBlochModel (const G4BetheBlochModel &)

Private Attributes
const G4ParticleDefinition *	particle

G4ParticleDefinition *	theElectron

G4EmCorrections *	corr

G4ParticleChangeForLoss *	fParticleChange

G4NistManager *	nist

G4double	mass

G4double	tlimit

G4double	spin

G4double	magMoment2

G4double	chargeSquare

G4double	ratio

G4double	formfact

G4double	twoln10

G4double	bg2lim

G4double	taulim

G4double	corrFactor

G4bool	isIon

G4bool	isInitialised

Additional Inherited Members
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 72 of file G4BetheBlochModel.hh.

Constructor & Destructor Documentation

◆ G4BetheBlochModel() [1/2]

G4BetheBlochModel::G4BetheBlochModel	(	const G4ParticleDefinition *	p = `nullptr`,
		const G4String &	nam = `"BetheBloch"`
	)

Definition at line 75 of file G4BetheBlochModel.cc.

   : G4VEmModel(nam),
     particle(nullptr),
     tlimit(DBL_MAX),
     twoln10(2.0*G4Log(10.0)),
     bg2lim(0.0169),
     taulim(8.4146e-3),
     isIon(false),
     isInitialised(false)
 {
   fParticleChange = nullptr;
   theElectron = G4Electron::Electron();
   if(p) {
     SetGenericIon(p);
     SetParticle(p);
   } else {
     SetParticle(theElectron);
   }
   corr = G4LossTableManager::Instance()->EmCorrections();  
   nist = G4NistManager::Instance();
   SetLowEnergyLimit(2.0*MeV);
 }

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◆ ~G4BetheBlochModel()

G4BetheBlochModel::~G4BetheBlochModel ( )

virtual

Definition at line 101 of file G4BetheBlochModel.cc.

102 {}

◆ G4BetheBlochModel() [2/2]

G4BetheBlochModel::G4BetheBlochModel ( const G4BetheBlochModel & )

private

Member Function Documentation

◆ ComputeCrossSectionPerAtom()

G4double G4BetheBlochModel::ComputeCrossSectionPerAtom	(	const G4ParticleDefinition *	p,
		G4double	kineticEnergy,
		G4double	Z,
		G4double	A,
		G4double	cutEnergy,
		G4double	maxEnergy
	)

virtual

Reimplemented from G4VEmModel.

Definition at line 226 of file G4BetheBlochModel.cc.

 {
   G4double cross = Z*ComputeCrossSectionPerElectron
                                          (p,kineticEnergy,cutEnergy,maxEnergy);
   return cross;
 }

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◆ ComputeCrossSectionPerElectron()

G4double G4BetheBlochModel::ComputeCrossSectionPerElectron	(	const G4ParticleDefinition *	p,
		G4double	kineticEnergy,
		G4double	cutEnergy,
		G4double	maxEnergy
	)

virtual

Definition at line 189 of file G4BetheBlochModel.cc.

 {
   G4double cross = 0.0;
   G4double tmax = MaxSecondaryEnergy(p, kineticEnergy);
   G4double maxEnergy = min(tmax,maxKinEnergy);
   if(cutEnergy < maxEnergy) {
 
     G4double totEnergy = kineticEnergy + mass;
     G4double energy2   = totEnergy*totEnergy;
     G4double beta2     = kineticEnergy*(kineticEnergy + 2.0*mass)/energy2;
 
     cross = (maxEnergy - cutEnergy)/(cutEnergy*maxEnergy) 
       - beta2*G4Log(maxEnergy/cutEnergy)/tmax;
 
     // +term for spin=1/2 particle
     if( 0.0 < spin ) { cross += 0.5*(maxEnergy - cutEnergy)/energy2; }
 
     // High order correction different for hadrons and ions
     // nevetheless they are applied to reduce high energy transfers
     //    if(!isIon) 
     //cross += corr->FiniteSizeCorrectionXS(p,currentMaterial,
     //                                          kineticEnergy,cutEnergy);
 
     cross *= twopi_mc2_rcl2*chargeSquare/beta2;
   }
   
    // G4cout << "BB: e= " << kineticEnergy << " tmin= " << cutEnergy 
    //        << " tmax= " << tmax << " cross= " << cross << G4endl;
   
   return cross;
 }

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◆ ComputeDEDXPerVolume()

G4double G4BetheBlochModel::ComputeDEDXPerVolume	(	const G4Material *	material,
		const G4ParticleDefinition *	p,
		G4double	kineticEnergy,
		G4double	cutEnergy
	)

virtual

Reimplemented from G4VEmModel.

Reimplemented in G4BetheBlochNoDeltaModel.

Definition at line 255 of file G4BetheBlochModel.cc.

 {
   G4double tmax      = MaxSecondaryEnergy(p, kineticEnergy);
   G4double cutEnergy = std::min(cut,tmax);
 
   G4double tau   = kineticEnergy/mass;
   G4double gam   = tau + 1.0;
   G4double bg2   = tau * (tau+2.0);
   G4double beta2 = bg2/(gam*gam);
 
   G4double eexc  = material->GetIonisation()->GetMeanExcitationEnergy();
   G4double eexc2 = eexc*eexc;
 
   G4double eDensity = material->GetElectronDensity();
 
   G4double dedx = G4Log(2.0*electron_mass_c2*bg2*cutEnergy/eexc2)
                 - (1.0 + cutEnergy/tmax)*beta2;
 
   if(0.0 < spin) {
     G4double del = 0.5*cutEnergy/(kineticEnergy + mass);
     dedx += del*del;
   }
 
   // density correction
   G4double x = G4Log(bg2)/twoln10;
   dedx -= material->GetIonisation()->DensityCorrection(x);
 
   // shell correction
   dedx -= 2.0*corr->ShellCorrection(p,material,kineticEnergy);
 
   // now compute the total ionization loss
   dedx *= twopi_mc2_rcl2*chargeSquare*eDensity/beta2;
 
   //High order correction different for hadrons and ions
   if(isIon) {
     dedx += corr->IonBarkasCorrection(p,material,kineticEnergy);
   } else {      
     dedx += corr->HighOrderCorrections(p,material,kineticEnergy,cutEnergy);
   }
 
   if (dedx < 0.0) { dedx = 0.0; }
 
   //G4cout << "E(MeV)= " << kineticEnergy/MeV << " dedx= " << dedx 
   //         << "  " << material->GetName() << G4endl;
 
   return dedx;
 }

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◆ CorrectionsAlongStep()

void G4BetheBlochModel::CorrectionsAlongStep	(	const G4MaterialCutsCouple *	couple,
		const G4DynamicParticle *	dp,
		G4double &	eloss,
		G4double &	,
		G4double	length
	)

virtual

Reimplemented from G4VEmModel.

Definition at line 308 of file G4BetheBlochModel.cc.

 {
   if(isIon) {
     const G4ParticleDefinition* p = dp->GetDefinition();
     const G4Material* mat = couple->GetMaterial();
     G4double preKinEnergy = dp->GetKineticEnergy();
     G4double e = preKinEnergy - eloss*0.5;
     if(e < preKinEnergy*0.75) { e = preKinEnergy*0.75; }
 
     G4double q2 = corr->EffectiveChargeSquareRatio(p,mat,e);
     GetModelOfFluctuations()->SetParticleAndCharge(p, q2);
     G4double qfactor = q2*corr->EffectiveChargeCorrection(p,mat,e)/corrFactor;
     G4double highOrder = length*corr->IonHighOrderCorrections(p,couple,e);
     G4double elossnew  = eloss*qfactor + highOrder;
     if(elossnew > preKinEnergy)   { elossnew = preKinEnergy; }
     else if(elossnew < eloss*0.5) { elossnew = eloss*0.5; }
     eloss = elossnew;
     //G4cout << "G4BetheBlochModel::CorrectionsAlongStep: e= " << preKinEnergy
     //           << " qfactor= " << qfactor 
     //           << " highOrder= " << highOrder << " (" 
     // << highOrder/eloss << ")" << G4endl;    
   }
 }

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◆ CrossSectionPerVolume()

G4double G4BetheBlochModel::CrossSectionPerVolume	(	const G4Material *	material,
		const G4ParticleDefinition *	p,
		G4double	kineticEnergy,
		G4double	cutEnergy,
		G4double	maxEnergy
	)

virtual

Reimplemented from G4VEmModel.

Reimplemented in G4BetheBlochNoDeltaModel.

Definition at line 240 of file G4BetheBlochModel.cc.

 {
   G4double eDensity = material->GetElectronDensity();
   G4double cross = eDensity*ComputeCrossSectionPerElectron
                                          (p,kineticEnergy,cutEnergy,maxEnergy);
   return cross;
 }

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◆ GetChargeSquareRatio() [1/2]

G4double G4BetheBlochModel::GetChargeSquareRatio	(	const G4ParticleDefinition *	p,
		const G4Material *	mat,
		G4double	kineticEnergy
	)

virtual

Reimplemented from G4VEmModel.

Definition at line 130 of file G4BetheBlochModel.cc.

 {
   // this method is called only for ions
   G4double q2 = corr->EffectiveChargeSquareRatio(p,mat,kineticEnergy);
   corrFactor = q2*corr->EffectiveChargeCorrection(p,mat,kineticEnergy);
   return corrFactor;
 }

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◆ GetChargeSquareRatio() [2/2]

G4double G4BetheBlochModel::GetChargeSquareRatio ( ) const

inlineprotected

Definition at line 196 of file G4BetheBlochModel.hh.

 {
   return chargeSquare;
 }

◆ GetParticleCharge()

G4double G4BetheBlochModel::GetParticleCharge	(	const G4ParticleDefinition *	p,
		const G4Material *	mat,
		G4double	kineticEnergy
	)

virtual

Reimplemented from G4VEmModel.

Reimplemented in G4BetheBlochIonGasModel.

Definition at line 142 of file G4BetheBlochModel.cc.

 {
   //G4cout<<"G4BetheBlochModel::GetParticleCharge e= "<<kineticEnergy <<
   //  " q= " <<  corr->GetParticleCharge(p,mat,kineticEnergy) <<G4endl;
   // this method is called only for ions, so no check if it is an ion
   return corr->GetParticleCharge(p,mat,kineticEnergy);
 }

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◆ Initialise()

void G4BetheBlochModel::Initialise	(	const G4ParticleDefinition *	p,
		const G4DataVector &
	)

virtual

Implements G4VEmModel.

Definition at line 106 of file G4BetheBlochModel.cc.

 {
   SetGenericIon(p);
   SetParticle(p);
 
   //G4cout << "G4BetheBlochModel::Initialise for " << p->GetParticleName()
   //         << "  isIon= " << isIon 
   //         << G4endl;
 
   // always false before the run
   SetDeexcitationFlag(false);
 
   if(!isInitialised) {
     isInitialised = true;
     fParticleChange = GetParticleChangeForLoss();
     if(UseAngularGeneratorFlag() && !GetAngularDistribution()) {
       SetAngularDistribution(new G4DeltaAngle());
     }
   }
 }

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◆ MaxSecondaryEnergy()

G4double G4BetheBlochModel::MaxSecondaryEnergy	(	const G4ParticleDefinition *	pd,
		G4double	kinEnergy
	)

protectedvirtual

Reimplemented from G4VEmModel.

Definition at line 454 of file G4BetheBlochModel.cc.

 {
   // here particle type is checked for any method
   SetParticle(pd);
   G4double tau  = kinEnergy/mass;
   G4double tmax = 2.0*electron_mass_c2*tau*(tau + 2.) /
                   (1. + 2.0*(tau + 1.)*ratio + ratio*ratio);
   return std::min(tmax,tlimit);
 }

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◆ MinEnergyCut()

G4double G4BetheBlochModel::MinEnergyCut	(	const G4ParticleDefinition *	,
		const G4MaterialCutsCouple *	couple
	)

virtual

Reimplemented from G4VEmModel.

Definition at line 180 of file G4BetheBlochModel.cc.

 {
   return couple->GetMaterial()->GetIonisation()->GetMeanExcitationEnergy();
 }

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◆ operator=()

G4BetheBlochModel& G4BetheBlochModel::operator= ( const G4BetheBlochModel & right )

private

◆ SampleSecondaries()

void G4BetheBlochModel::SampleSecondaries	(	std::vector< G4DynamicParticle >	vdp,
		const G4MaterialCutsCouple *	couple,
		const G4DynamicParticle *	dp,
		G4double	tmin,
		G4double	maxEnergy
	)

virtual

Implements G4VEmModel.

Definition at line 338 of file G4BetheBlochModel.cc.

 {
   G4double kineticEnergy = dp->GetKineticEnergy();
   G4double tmax = MaxSecondaryEnergy(dp->GetDefinition(),kineticEnergy);
 
   G4double maxKinEnergy = std::min(maxEnergy,tmax);
   if(minKinEnergy >= maxKinEnergy) { return; }
 
   //G4cout << "G4BetheBlochModel::SampleSecondaries Emin= " << minKinEnergy
   //         << " Emax= " << maxKinEnergy << G4endl;
 
   G4double totEnergy     = kineticEnergy + mass;
   G4double etot2         = totEnergy*totEnergy;
   G4double beta2         = kineticEnergy*(kineticEnergy + 2.0*mass)/etot2;
 
   G4double deltaKinEnergy, f; 
   G4double f1 = 0.0;
   G4double fmax = 1.0;
   if( 0.0 < spin ) { fmax += 0.5*maxKinEnergy*maxKinEnergy/etot2; }
 
   CLHEP::HepRandomEngine* rndmEngineMod = G4Random::getTheEngine();
   G4double rndm[2];
 
   // sampling without nuclear size effect
   do {
     rndmEngineMod->flatArray(2, rndm);
     deltaKinEnergy = minKinEnergy*maxKinEnergy
                     /(minKinEnergy*(1.0 - rndm[0]) + maxKinEnergy*rndm[0]);
 
     f = 1.0 - beta2*deltaKinEnergy/tmax;
     if( 0.0 < spin ) {
       f1 = 0.5*deltaKinEnergy*deltaKinEnergy/etot2;
       f += f1;
     }
 
     // Loop checking, 03-Aug-2015, Vladimir Ivanchenko
   } while( fmax*rndm[1] > f);
 
   // projectile formfactor - suppresion of high energy
   // delta-electron production at high energy
   
   G4double x = formfact*deltaKinEnergy;
   if(x > 1.e-6) {
 
     G4double x1 = 1.0 + x;
     G4double grej  = 1.0/(x1*x1);
     if( 0.0 < spin ) {
       G4double x2 = 0.5*electron_mass_c2*deltaKinEnergy/(mass*mass);
       grej *= (1.0 + magMoment2*(x2 - f1/f)/(1.0 + x2));
     }
     if(grej > 1.1) {
       G4cout << "### G4BetheBlochModel WARNING: grej= " << grej
              << "  " << dp->GetDefinition()->GetParticleName()
              << " Ekin(MeV)= " <<  kineticEnergy
              << " delEkin(MeV)= " << deltaKinEnergy
              << G4endl;
     }
     if(rndmEngineMod->flat() > grej) { return; }
   }
 
   G4ThreeVector deltaDirection;
 
   if(UseAngularGeneratorFlag()) {
 
     const G4Material* mat =  couple->GetMaterial();
     G4int Z = SelectRandomAtomNumber(mat);
 
     deltaDirection = 
       GetAngularDistribution()->SampleDirection(dp, deltaKinEnergy, Z, mat);
 
   } else {
  
     G4double deltaMomentum =
       sqrt(deltaKinEnergy * (deltaKinEnergy + 2.0*electron_mass_c2));
     G4double cost = deltaKinEnergy * (totEnergy + electron_mass_c2) /
       (deltaMomentum * dp->GetTotalMomentum());
     if(cost > 1.0) { cost = 1.0; }
     G4double sint = sqrt((1.0 - cost)*(1.0 + cost));
 
     G4double phi = twopi*rndmEngineMod->flat();
 
     deltaDirection.set(sint*cos(phi),sint*sin(phi), cost) ;
     deltaDirection.rotateUz(dp->GetMomentumDirection());
   }  
   /*
     G4cout << "### G4BetheBlochModel " 
            << dp->GetDefinition()->GetParticleName()
            << " Ekin(MeV)= " <<  kineticEnergy
            << " delEkin(MeV)= " << deltaKinEnergy
            << " tmin(MeV)= " << minKinEnergy
            << " tmax(MeV)= " << maxKinEnergy
            << " dir= " << dp->GetMomentumDirection()
            << " dirDelta= " << deltaDirection
            << G4endl;
   */
   // create G4DynamicParticle object for delta ray
   G4DynamicParticle* delta = 
     new G4DynamicParticle(theElectron,deltaDirection,deltaKinEnergy);
 
   vdp->push_back(delta);
 
   // Change kinematics of primary particle
   kineticEnergy -= deltaKinEnergy;
   G4ThreeVector finalP = dp->GetMomentum() - delta->GetMomentum();
   finalP               = finalP.unit();
   
   fParticleChange->SetProposedKineticEnergy(kineticEnergy);
   fParticleChange->SetProposedMomentumDirection(finalP);
 }

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◆ SetChargeSquareRatio()

void G4BetheBlochModel::SetChargeSquareRatio ( G4double val )

inlineprotected

Definition at line 203 of file G4BetheBlochModel.hh.

 {
   chargeSquare = val;
 }

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◆ SetGenericIon()

void G4BetheBlochModel::SetGenericIon ( const G4ParticleDefinition * p )

inlineprivate

Definition at line 187 of file G4BetheBlochModel.hh.

 {
   if(p && particle != p) { 
     if(p->GetParticleName() == "GenericIon") { isIon = true; }
   }
 }

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◆ SetParticle()

void G4BetheBlochModel::SetParticle ( const G4ParticleDefinition * p )

inlineprivate

Definition at line 175 of file G4BetheBlochModel.hh.

 {
   if(particle != p) {
     particle = p;
     if(p->GetBaryonNumber() > 3 || p->GetPDGCharge() > 1.5*CLHEP::eplus) 
       { isIon = true; }
     SetupParameters();
   }
 }

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◆ SetupParameters()

void G4BetheBlochModel::SetupParameters ( )

private

Definition at line 154 of file G4BetheBlochModel.cc.

 {
   mass = particle->GetPDGMass();
   spin = particle->GetPDGSpin();
   G4double q = particle->GetPDGCharge()/eplus;
   chargeSquare = q*q;
   corrFactor = chargeSquare;
   ratio = electron_mass_c2/mass;
   G4double magmom = 
     particle->GetPDGMagneticMoment()*mass/(0.5*eplus*hbar_Planck*c_squared);
   magMoment2 = magmom*magmom - 1.0;
   formfact = 0.0;
   if(particle->GetLeptonNumber() == 0) {
     G4double x = 0.8426*GeV;
     if(spin == 0.0 && mass < GeV) {x = 0.736*GeV;}
     else if(mass > GeV) {
       x /= nist->GetZ13(mass/proton_mass_c2);
       //        tlimit = 51.2*GeV*A13[iz]*A13[iz];
     }
     formfact = 2.0*electron_mass_c2/(x*x);
     tlimit   = 2.0/formfact;
   }
 }

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Member Data Documentation

◆ bg2lim

G4double G4BetheBlochModel::bg2lim

private

Definition at line 166 of file G4BetheBlochModel.hh.

◆ chargeSquare

G4double G4BetheBlochModel::chargeSquare

private

Definition at line 162 of file G4BetheBlochModel.hh.

◆ corr

G4EmCorrections* G4BetheBlochModel::corr

private

Definition at line 154 of file G4BetheBlochModel.hh.

◆ corrFactor

G4double G4BetheBlochModel::corrFactor

private

Definition at line 168 of file G4BetheBlochModel.hh.

◆ formfact

G4double G4BetheBlochModel::formfact

private

Definition at line 164 of file G4BetheBlochModel.hh.

◆ fParticleChange

G4ParticleChangeForLoss* G4BetheBlochModel::fParticleChange

private

Definition at line 155 of file G4BetheBlochModel.hh.

◆ isInitialised

G4bool G4BetheBlochModel::isInitialised

private

Definition at line 170 of file G4BetheBlochModel.hh.

◆ isIon

G4bool G4BetheBlochModel::isIon

private

Definition at line 169 of file G4BetheBlochModel.hh.

◆ magMoment2

G4double G4BetheBlochModel::magMoment2

private

Definition at line 161 of file G4BetheBlochModel.hh.

◆ mass

G4double G4BetheBlochModel::mass

private

Definition at line 158 of file G4BetheBlochModel.hh.

◆ nist

G4NistManager* G4BetheBlochModel::nist

private

Definition at line 156 of file G4BetheBlochModel.hh.

◆ particle

const G4ParticleDefinition* G4BetheBlochModel::particle

private

Definition at line 152 of file G4BetheBlochModel.hh.

◆ ratio

G4double G4BetheBlochModel::ratio

private

Definition at line 163 of file G4BetheBlochModel.hh.

◆ spin

G4double G4BetheBlochModel::spin

private

Definition at line 160 of file G4BetheBlochModel.hh.

◆ taulim

G4double G4BetheBlochModel::taulim

private

Definition at line 167 of file G4BetheBlochModel.hh.

◆ theElectron

G4ParticleDefinition* G4BetheBlochModel::theElectron

private

Definition at line 153 of file G4BetheBlochModel.hh.

◆ tlimit

G4double G4BetheBlochModel::tlimit

private

Definition at line 159 of file G4BetheBlochModel.hh.

◆ twoln10

G4double G4BetheBlochModel::twoln10

private

Definition at line 165 of file G4BetheBlochModel.hh.

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

Public Member Functions

Protected Member Functions

Private Member Functions

Private Attributes

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

◆ G4BetheBlochModel() [1/2]

◆ ~G4BetheBlochModel()

◆ G4BetheBlochModel() [2/2]

Member Function Documentation

◆ ComputeCrossSectionPerAtom()

◆ ComputeCrossSectionPerElectron()

◆ ComputeDEDXPerVolume()

◆ CorrectionsAlongStep()

◆ CrossSectionPerVolume()

◆ GetChargeSquareRatio() [1/2]

◆ GetChargeSquareRatio() [2/2]

◆ GetParticleCharge()

◆ Initialise()

◆ MaxSecondaryEnergy()

◆ MinEnergyCut()

◆ operator=()

◆ SampleSecondaries()

◆ SetChargeSquareRatio()

◆ SetGenericIon()

◆ SetParticle()

◆ SetupParameters()

Member Data Documentation

◆ bg2lim

◆ chargeSquare

◆ corr

◆ corrFactor

◆ formfact

◆ fParticleChange

◆ isInitialised

◆ isIon

◆ magMoment2

◆ mass

◆ nist

◆ particle

◆ ratio

◆ spin

◆ taulim

◆ theElectron

◆ tlimit

◆ twoln10