G4ModifiedTsai Class Reference

#include <G4ModifiedTsai.hh>

Inheritance diagram for G4ModifiedTsai:

Public Member Functions
	G4ModifiedTsai (const G4String &name="")
virtual	~G4ModifiedTsai ()
virtual G4ThreeVector &	SampleDirection (const G4DynamicParticle *dp, G4double out_energy, G4int Z, const G4Material *mat=nullptr) final
virtual void	SamplePairDirections (const G4DynamicParticle *dp, G4double elecKinEnergy, G4double posiKinEnergy, G4ThreeVector &dirElectron, G4ThreeVector &dirPositron, G4int Z=0, const G4Material *mat=nullptr) final
virtual void	PrintGeneratorInformation () const final
Public Member Functions inherited from G4VEmAngularDistribution
	G4VEmAngularDistribution (const G4String &name)
virtual	~G4VEmAngularDistribution ()
virtual G4ThreeVector &	SampleDirection (const G4DynamicParticle *dp, G4double finalTotalEnergy, G4int Z, const G4Material *)=0
virtual G4ThreeVector &	SampleDirectionForShell (const G4DynamicParticle *dp, G4double finalTotalEnergy, G4int Z, G4int shellID, const G4Material *)
virtual void	SamplePairDirections (const G4DynamicParticle *dp, G4double elecKinEnergy, G4double posiKinEnergy, G4ThreeVector &dirElectron, G4ThreeVector &dirPositron, G4int Z=0, const G4Material *mat=nullptr)
const G4String &	GetName () const
G4VEmAngularDistribution &	operator= (const G4VEmAngularDistribution &right)=delete
	G4VEmAngularDistribution (const G4VEmAngularDistribution &)=delete

Additional Inherited Members
Protected Attributes inherited from G4VEmAngularDistribution
G4ThreeVector	fLocalDirection
G4bool	fPolarisation

Detailed Description

Definition at line 62 of file G4ModifiedTsai.hh.

Constructor & Destructor Documentation

G4ModifiedTsai()

G4ModifiedTsai::G4ModifiedTsai ( const G4String &  name = "" )

explicit

Definition at line 65 of file G4ModifiedTsai.cc.

  : G4VEmAngularDistribution("ModifiedTsai")
{}    

~G4ModifiedTsai()

G4ModifiedTsai::~G4ModifiedTsai ( )

virtual

Definition at line 71 of file G4ModifiedTsai.cc.

{}

Member Function Documentation

PrintGeneratorInformation()

void G4ModifiedTsai::PrintGeneratorInformation ( ) const

finalvirtual

Definition at line 144 of file G4ModifiedTsai.cc.

{
  G4cout << "\n" << G4endl;
  G4cout << "Bremsstrahlung Angular Generator is Modified Tsai" << G4endl;
  G4cout << "Distribution suggested by L.Urban (Geant3 manual (1993) Phys211)" 
         << G4endl;
  G4cout << "Derived from Tsai distribution (Rev Mod Phys 49,421(1977)) \n" 
         << G4endl;
} 

SampleDirection()

G4ThreeVector & G4ModifiedTsai::SampleDirection ( const G4DynamicParticle *  dp, G4double  out_energy, G4int  Z, const G4Material *  mat = nullptr  )

finalvirtual

Implements G4VEmAngularDistribution.

Definition at line 77 of file G4ModifiedTsai.cc.

{
  // Sample gamma angle (Z - axis along the parent particle).
  G4double cost = SampleCosTheta(dp->GetKineticEnergy());
  G4double sint = std::sqrt((1 - cost)*(1 + cost));
  G4double phi  = CLHEP::twopi*G4UniformRand(); 
 
  fLocalDirection.set(sint*std::cos(phi), sint*std::sin(phi), cost);
  fLocalDirection.rotateUz(dp->GetMomentumDirection());
 
  return fLocalDirection;
}

SamplePairDirections()

void G4ModifiedTsai::SamplePairDirections ( const G4DynamicParticle *  dp, G4double  elecKinEnergy, G4double  posiKinEnergy, G4ThreeVector &  dirElectron, G4ThreeVector &  dirPositron, G4int  Z = 0, const G4Material *  mat = nullptr  )

finalvirtual

Reimplemented from G4VEmAngularDistribution.

Definition at line 118 of file G4ModifiedTsai.cc.

{
  G4double phi  = CLHEP::twopi * G4UniformRand();
  G4double sinp = std::sin(phi);
  G4double cosp = std::cos(phi);
 
  G4double cost = SampleCosTheta(elecKinEnergy);
  G4double sint = std::sqrt((1. - cost)*(1. + cost));
 
  dirElectron.set(sint*cosp, sint*sinp, cost);
  dirElectron.rotateUz(dp->GetMomentumDirection());
 
  cost = SampleCosTheta(posiKinEnergy);
  sint = std::sqrt((1. - cost)*(1. + cost));
 
  dirPositron.set(-sint*cosp, -sint*sinp, cost);
  dirPositron.rotateUz(dp->GetMomentumDirection());
}

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

• G4ModifiedTsai.hh
• G4ModifiedTsai.cc