#include <G4LowEnergyRayleigh.hh>

Inheritance diagram for G4LowEnergyRayleigh:

Collaboration diagram for G4LowEnergyRayleigh:

Public Member Functions
	G4LowEnergyRayleigh (const G4String &processName="LowEnRayleigh")

	~G4LowEnergyRayleigh ()

G4bool	IsApplicable (const G4ParticleDefinition &)

void	BuildPhysicsTable (const G4ParticleDefinition &photon)

G4VParticleChange *	PostStepDoIt (const G4Track &aTrack, const G4Step &aStep)

G4double	DumpMeanFreePath (const G4Track &aTrack, G4double previousStepSize, G4ForceCondition *condition)

Public Member Functions inherited from G4VDiscreteProcess
	G4VDiscreteProcess (const G4String &, G4ProcessType aType=fNotDefined)

	G4VDiscreteProcess (G4VDiscreteProcess &)

virtual	~G4VDiscreteProcess ()

virtual G4double	PostStepGetPhysicalInteractionLength (const G4Track &track, G4double previousStepSize, G4ForceCondition *condition)

virtual G4double	AlongStepGetPhysicalInteractionLength (const G4Track &, G4double, G4double, G4double &, G4GPILSelection *)

virtual G4double	AtRestGetPhysicalInteractionLength (const G4Track &, G4ForceCondition *)

virtual G4VParticleChange *	AtRestDoIt (const G4Track &, const G4Step &)

virtual G4VParticleChange *	AlongStepDoIt (const G4Track &, const G4Step &)

Public Member Functions inherited from G4VProcess
	G4VProcess (const G4String &aName="NoName", G4ProcessType aType=fNotDefined)

	G4VProcess (const G4VProcess &right)

virtual	~G4VProcess ()

G4int	operator== (const G4VProcess &right) const

G4int	operator!= (const G4VProcess &right) const

G4double	GetCurrentInteractionLength () const

void	SetPILfactor (G4double value)

G4double	GetPILfactor () const

G4double	AlongStepGPIL (const G4Track &track, G4double previousStepSize, G4double currentMinimumStep, G4double &proposedSafety, G4GPILSelection *selection)

G4double	AtRestGPIL (const G4Track &track, G4ForceCondition *condition)

G4double	PostStepGPIL (const G4Track &track, G4double previousStepSize, G4ForceCondition *condition)

virtual void	PreparePhysicsTable (const G4ParticleDefinition &)

virtual G4bool	StorePhysicsTable (const G4ParticleDefinition *, const G4String &, G4bool)

virtual G4bool	RetrievePhysicsTable (const G4ParticleDefinition *, const G4String &, G4bool)

const G4String &	GetPhysicsTableFileName (const G4ParticleDefinition *, const G4String &directory, const G4String &tableName, G4bool ascii=false)

const G4String &	GetProcessName () const

G4ProcessType	GetProcessType () const

void	SetProcessType (G4ProcessType)

G4int	GetProcessSubType () const

void	SetProcessSubType (G4int)

virtual void	StartTracking (G4Track *)

virtual void	EndTracking ()

virtual void	SetProcessManager (const G4ProcessManager *)

virtual const G4ProcessManager *	GetProcessManager ()

virtual void	ResetNumberOfInteractionLengthLeft ()

G4double	GetNumberOfInteractionLengthLeft () const

G4double	GetTotalNumberOfInteractionLengthTraversed () const

G4bool	isAtRestDoItIsEnabled () const

G4bool	isAlongStepDoItIsEnabled () const

G4bool	isPostStepDoItIsEnabled () const

virtual void	DumpInfo () const

void	SetVerboseLevel (G4int value)

G4int	GetVerboseLevel () const

virtual void	SetMasterProcess (G4VProcess *masterP)

const G4VProcess *	GetMasterProcess () const

virtual void	BuildWorkerPhysicsTable (const G4ParticleDefinition &part)

virtual void	PrepareWorkerPhysicsTable (const G4ParticleDefinition &)

Protected Member Functions
G4double	GetMeanFreePath (const G4Track &aTrack, G4double previousStepSize, G4ForceCondition *condition)

Protected Member Functions inherited from G4VProcess
void	SubtractNumberOfInteractionLengthLeft (G4double previousStepSize)

void	ClearNumberOfInteractionLengthLeft ()

Additional Inherited Members
Static Public Member Functions inherited from G4VProcess
static const G4String &	GetProcessTypeName (G4ProcessType)

Protected Attributes inherited from G4VProcess
const G4ProcessManager *	aProcessManager

G4VParticleChange *	pParticleChange

G4ParticleChange	aParticleChange

G4double	theNumberOfInteractionLengthLeft

G4double	currentInteractionLength

G4double	theInitialNumberOfInteractionLength

G4String	theProcessName

G4String	thePhysicsTableFileName

G4ProcessType	theProcessType

G4int	theProcessSubType

G4double	thePILfactor

G4bool	enableAtRestDoIt

G4bool	enableAlongStepDoIt

G4bool	enablePostStepDoIt

G4int	verboseLevel

Detailed Description

Definition at line 60 of file G4LowEnergyRayleigh.hh.

Constructor & Destructor Documentation

G4LowEnergyRayleigh::G4LowEnergyRayleigh ( const G4String & processName = "LowEnRayleigh" )

Definition at line 73 of file G4LowEnergyRayleigh.cc.

   : G4VDiscreteProcess(processName),
     lowEnergyLimit(250*eV),
     highEnergyLimit(100*GeV),
     intrinsicLowEnergyLimit(10*eV),
     intrinsicHighEnergyLimit(100*GeV)
 {
   if (lowEnergyLimit < intrinsicLowEnergyLimit ||
       highEnergyLimit > intrinsicHighEnergyLimit)
     {
       G4Exception("G4LowEnergyRayleigh::G4LowEnergyRayleigh()",
                   "OutOfRange", FatalException,
                   "Energy limit outside intrinsic process validity range!");
     }
 
   crossSectionHandler = new G4RDCrossSectionHandler();
 
   G4RDVDataSetAlgorithm* ffInterpolation = new G4RDLogLogInterpolation;
   G4String formFactorFile = "rayl/re-ff-";
   formFactorData = new G4RDCompositeEMDataSet(ffInterpolation,1.,1.);
   formFactorData->LoadData(formFactorFile);
 
   meanFreePathTable = 0;
 
    if (verboseLevel > 0)
      {
        G4cout << GetProcessName() << " is created " << G4endl
           << "Energy range: "
           << lowEnergyLimit / keV << " keV - "
           << highEnergyLimit / GeV << " GeV"
           << G4endl;
      }
 }

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G4LowEnergyRayleigh::~G4LowEnergyRayleigh ( )

Definition at line 107 of file G4LowEnergyRayleigh.cc.

 {
   delete meanFreePathTable;
   delete crossSectionHandler;
   delete formFactorData;
 }

Member Function Documentation

void G4LowEnergyRayleigh::BuildPhysicsTable ( const G4ParticleDefinition & photon )

virtual

Reimplemented from G4VProcess.

Definition at line 114 of file G4LowEnergyRayleigh.cc.

 {
 
   crossSectionHandler->Clear();
   G4String crossSectionFile = "rayl/re-cs-";
   crossSectionHandler->LoadData(crossSectionFile);
 
   delete meanFreePathTable;
   meanFreePathTable = crossSectionHandler->BuildMeanFreePathForMaterials();
 }

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G4double G4LowEnergyRayleigh::DumpMeanFreePath	(	const G4Track &	aTrack,
		G4double	previousStepSize,
		G4ForceCondition *	condition
	)

inline

Definition at line 75 of file G4LowEnergyRayleigh.hh.

78 { return GetMeanFreePath(aTrack, previousStepSize, condition); }

condition

G4double condition(const G4ErrorSymMatrix &m)

G4LowEnergyRayleigh::GetMeanFreePath

G4double GetMeanFreePath(const G4Track &aTrack, G4double previousStepSize, G4ForceCondition *condition)

Definition: G4LowEnergyRayleigh.cc:202

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G4double G4LowEnergyRayleigh::GetMeanFreePath	(	const G4Track &	aTrack,
		G4double	previousStepSize,
		G4ForceCondition *	condition
	)

protectedvirtual

Implements G4VDiscreteProcess.

Definition at line 202 of file G4LowEnergyRayleigh.cc.

 {
   const G4DynamicParticle* photon = track.GetDynamicParticle();
   G4double energy = photon->GetKineticEnergy();
   const G4MaterialCutsCouple* couple = track.GetMaterialCutsCouple();
   size_t materialIndex = couple->GetIndex();
 
   G4double meanFreePath;
   if (energy > highEnergyLimit) meanFreePath = meanFreePathTable->FindValue(highEnergyLimit,materialIndex);
   else if (energy < lowEnergyLimit) meanFreePath = DBL_MAX;
   else meanFreePath = meanFreePathTable->FindValue(energy,materialIndex);
   return meanFreePath;
 }

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G4bool G4LowEnergyRayleigh::IsApplicable ( const G4ParticleDefinition & particle )

virtual

Reimplemented from G4VProcess.

Definition at line 197 of file G4LowEnergyRayleigh.cc.

 {
   return ( &particle == G4Gamma::Gamma() ); 
 }

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G4VParticleChange * G4LowEnergyRayleigh::PostStepDoIt	(	const G4Track &	aTrack,
		const G4Step &	aStep
	)

virtual

Reimplemented from G4VDiscreteProcess.

Definition at line 125 of file G4LowEnergyRayleigh.cc.

 {
 
   aParticleChange.Initialize(aTrack);
 
   const G4DynamicParticle* incidentPhoton = aTrack.GetDynamicParticle();
   G4double photonEnergy0 = incidentPhoton->GetKineticEnergy();
 
   if (photonEnergy0 <= lowEnergyLimit)
     {
       aParticleChange.ProposeTrackStatus(fStopAndKill);
       aParticleChange.ProposeEnergy(0.);
       aParticleChange.ProposeLocalEnergyDeposit(photonEnergy0);
       return G4VDiscreteProcess::PostStepDoIt(aTrack,aStep);
     }
 
   //  G4double e0m = photonEnergy0 / electron_mass_c2 ;
   G4ParticleMomentum photonDirection0 = incidentPhoton->GetMomentumDirection();
 
   // Select randomly one element in the current material
   const G4MaterialCutsCouple* couple = aTrack.GetMaterialCutsCouple();
   G4int Z = crossSectionHandler->SelectRandomAtom(couple,photonEnergy0);
 
   // Sample the angle of the scattered photon
 
   G4double wlPhoton = h_Planck*c_light/photonEnergy0;
 
   G4double gReject,x,dataFormFactor;
   G4double randomFormFactor;
   G4double cosTheta;
   G4double sinTheta;
   G4double fcostheta;
 
   do
     {
       do
       {
       cosTheta = 2. * G4UniformRand() - 1.;
       fcostheta = ( 1. + cosTheta*cosTheta)/2.;
       } while (fcostheta < G4UniformRand());
 
       G4double sinThetaHalf = std::sqrt((1. - cosTheta) / 2.);
       x = sinThetaHalf / (wlPhoton/cm);
       if (x > 1.e+005)
          dataFormFactor = formFactorData->FindValue(x,Z-1);
       else
          dataFormFactor = formFactorData->FindValue(0.,Z-1);
       randomFormFactor = G4UniformRand() * Z * Z;
       sinTheta = std::sqrt(1. - cosTheta*cosTheta);
       gReject = dataFormFactor * dataFormFactor;
 
     } while( gReject < randomFormFactor);
 
   // Scattered photon angles. ( Z - axis along the parent photon)
   G4double phi = twopi * G4UniformRand() ;
   G4double dirX = sinTheta*std::cos(phi);
   G4double dirY = sinTheta*std::sin(phi);
   G4double dirZ = cosTheta;
 
   // Update G4VParticleChange for the scattered photon
   G4ThreeVector photonDirection1(dirX, dirY, dirZ);
 
   photonDirection1.rotateUz(photonDirection0);
   aParticleChange.ProposeEnergy(photonEnergy0);
   aParticleChange.ProposeMomentumDirection(photonDirection1);
 
   aParticleChange.SetNumberOfSecondaries(0);
 
   return G4VDiscreteProcess::PostStepDoIt(aTrack, aStep);
 }

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

source/geant4.10.03.p03/examples/advanced/eRosita/physics/include/G4LowEnergyRayleigh.hh
source/geant4.10.03.p03/examples/advanced/eRosita/physics/src/G4LowEnergyRayleigh.cc

Public Member Functions

Protected Member Functions

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation