G4RDModifiedTsai Class Reference

#include <G4RDModifiedTsai.hh>

Inheritance diagram for G4RDModifiedTsai:

Public Member Functions
	G4RDModifiedTsai (const G4String &name)
	~G4RDModifiedTsai ()
G4double	PolarAngle (const G4double initial_energy, const G4double final_energy, const G4int Z)
void	PrintGeneratorInformation () const
Public Member Functions inherited from G4RDVBremAngularDistribution
	G4RDVBremAngularDistribution (const G4String &name)
virtual	~G4RDVBremAngularDistribution ()

Detailed Description

Definition at line 60 of file G4RDModifiedTsai.hh.

Constructor & Destructor Documentation

G4RDModifiedTsai::G4RDModifiedTsai

(

const G4String &

name

)

Definition at line 59 of file G4RDModifiedTsai.cc.

                                                      :G4RDVBremAngularDistribution(name)
{;}

G4RDModifiedTsai::~G4RDModifiedTsai

(

)

Definition at line 64 of file G4RDModifiedTsai.cc.

{;}

Member Function Documentation

G4double G4RDModifiedTsai::PolarAngle ( const G4double  initial_energy, const G4double  final_energy, const G4int  Z  )

virtual

Implements G4RDVBremAngularDistribution.

Definition at line 69 of file G4RDModifiedTsai.cc.

References python.hepunit::electron_mass_c2, G4UniformRand, and python.hepunit::pi.

{

  // Sample gamma angle (Z - axis along the parent particle).
  // Universal distribution suggested by L. Urban (Geant3 manual (1993) 
  // Phys211) derived from Tsai distribution (Rev Mod Phys 49,421(1977))

  G4double totalEnergy = initial_energy + electron_mass_c2;   

  const G4double a1 = 0.625, a2 = 3.*a1, d = 27.;
  G4double u, theta = 0;

  do{
  u = - std::log(G4UniformRand()*G4UniformRand());

  if (9./(9.+d) > G4UniformRand()) u /= a1;
  else                             u /= a2;
    
  theta = u*electron_mass_c2/totalEnergy;
  }while(u > (totalEnergy*pi/electron_mass_c2));

  return theta;
}

void G4RDModifiedTsai::PrintGeneratorInformation ( ) const

virtual

Implements G4RDVBremAngularDistribution.

Definition at line 96 of file G4RDModifiedTsai.cc.

References G4cout, and G4endl.

{

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

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

• G4RDModifiedTsai.hh
• G4RDModifiedTsai.cc