G4PhononDownconversion Class Reference

#include <G4PhononDownconversion.hh>

Inheritance diagram for G4PhononDownconversion:

Public Member Functions
	G4PhononDownconversion (const G4String &processName="phononDownconversion")
virtual	~G4PhononDownconversion ()
virtual G4VParticleChange *	PostStepDoIt (const G4Track &, const G4Step &)
virtual G4bool	IsApplicable (const G4ParticleDefinition &)
Public Member Functions inherited from G4VPhononProcess
	G4VPhononProcess (const G4String &processName)
virtual	~G4VPhononProcess ()
virtual void	StartTracking (G4Track *track)
virtual void	EndTracking ()
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	BuildPhysicsTable (const G4ParticleDefinition &)
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	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
virtual G4double	GetMeanFreePath (const G4Track &, G4double, G4ForceCondition *)
Protected Member Functions inherited from G4VPhononProcess
virtual G4int	GetPolarization (const G4Track &track) const
virtual G4int	GetPolarization (const G4Track *track) const
virtual G4int	ChoosePolarization (G4double Ldos, G4double STdos, G4double FTdos) const
virtual G4Track *	CreateSecondary (G4int polarization, const G4ThreeVector &K, G4double energy) const
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 G4VPhononProcess
G4PhononTrackMap *	trackKmap
const G4LatticePhysical *	theLattice
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 36 of file G4PhononDownconversion.hh.

Constructor & Destructor Documentation

G4PhononDownconversion::G4PhononDownconversion

(

const G4String &

processName = "phononDownconversion"

)

Definition at line 51 of file G4PhononDownconversion.cc.

  : G4VPhononProcess(aName), fBeta(0.), fGamma(0.), fLambda(0.), fMu(0.) {;}

G4PhononDownconversion::~G4PhononDownconversion ( )

virtual

Definition at line 54 of file G4PhononDownconversion.cc.

{;}

Member Function Documentation

G4double G4PhononDownconversion::GetMeanFreePath ( const G4Track &  aTrack, G4double  , G4ForceCondition *  condition  )

protectedvirtual

Implements G4VDiscreteProcess.

Definition at line 58 of file G4PhononDownconversion.cc.

References G4cout, G4endl, G4LatticePhysical::GetAnhDecConstant(), G4Track::GetKineticEnergy(), G4Track::GetVelocity(), python.hepunit::h_Planck, NotForced, G4VPhononProcess::theLattice, and G4VProcess::verboseLevel.

                                                      {
  //Determines mean free path for longitudinal phonons to split
  G4double A = theLattice->GetAnhDecConstant();
  G4double Eoverh = aTrack.GetKineticEnergy()/h_Planck;
  
  //Calculate mean free path for anh. decay
  G4double mfp = aTrack.GetVelocity()/(Eoverh*Eoverh*Eoverh*Eoverh*Eoverh*A);

  if (verboseLevel > 1)
    G4cout << "G4PhononDownconversion::GetMeanFreePath = " << mfp << G4endl;
  
  *condition = NotForced;
  return mfp;
}

G4bool G4PhononDownconversion::IsApplicable ( const G4ParticleDefinition &  aPD )

virtual

Reimplemented from G4VPhononProcess.

Definition at line 102 of file G4PhononDownconversion.cc.

References G4PhononLong::PhononDefinition().

                                                                           {
  //Only L-phonons decay
  return (&aPD==G4PhononLong::PhononDefinition());
}

G4VParticleChange * G4PhononDownconversion::PostStepDoIt ( const G4Track &  aTrack, const G4Step &    )

virtual

Reimplemented from G4VDiscreteProcess.

Definition at line 78 of file G4PhononDownconversion.cc.

References G4VProcess::aParticleChange, fStopAndKill, G4UniformRand, G4LatticePhysical::GetBeta(), G4LatticePhysical::GetGamma(), G4LatticePhysical::GetLambda(), G4LatticePhysical::GetMu(), G4ParticleChange::Initialize(), G4ParticleChange::ProposeEnergy(), G4VParticleChange::ProposeTrackStatus(), and G4VPhononProcess::theLattice.

                                            {
  aParticleChange.Initialize(aTrack);

  //Obtain dynamical constants from this volume's lattice
  fBeta=theLattice->GetBeta();
  fGamma=theLattice->GetGamma();
  fLambda=theLattice->GetLambda();
  fMu=theLattice->GetMu();

  //Destroy the parent phonon and create the daughter phonons.
  //74% chance that daughter phonons are both transverse
  //26% Transverse and Longitudinal
  if (G4UniformRand()>0.740) MakeLTSecondaries(aTrack);
  else MakeTTSecondaries(aTrack);

  aParticleChange.ProposeEnergy(0.);
  aParticleChange.ProposeTrackStatus(fStopAndKill);    
       
  return &aParticleChange;
}

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

• G4PhononDownconversion.hh
• G4PhononDownconversion.cc