Geant4_10
G4GammaConversionToMuons.hh
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27 // $Id: G4GammaConversionToMuons.hh 66241 2012-12-13 18:34:42Z gunter $
28 //
29 // ------------ G4GammaConversionToMuons physics process ------
30 // by H.Burkhardt, S. Kelner and R. Kokoulin, April 2002
31 // -----------------------------------------------------------------------------
32 //
33 // 05-08-04: suppression of .icc file (mma)
34 // 13-08-04, public ComputeCrossSectionPerAtom() and ComputeMeanFreePath() (mma)
35 //
36 // class description
37 //
38 // gamma ---> mu+ mu-
39 // inherit from G4VDiscreteProcess
40 //
41 
42 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
43 
44 #ifndef G4GammaConversionToMuons_h
45 #define G4GammaConversionToMuons_h 1
46 
47 #include "G4ios.hh"
48 #include "globals.hh"
49 #include "Randomize.hh"
50 #include "G4VDiscreteProcess.hh"
51 #include "G4PhysicsTable.hh"
52 #include "G4PhysicsLogVector.hh"
53 #include "G4Element.hh"
54 #include "G4Gamma.hh"
55 #include "G4Electron.hh"
56 #include "G4Positron.hh"
57 #include "G4Step.hh"
58 
59 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
60 
62 
63 {
64  public: // with description
65 
66  G4GammaConversionToMuons(const G4String& processName ="GammaToMuPair",
68 
70 
72  // true for Gamma only.
73 
75  // here dummy, the total cross section parametrization is used rather
76  // than tables, just calling PrintInfoDefinition
77 
78  void PrintInfoDefinition();
79  // Print few lines of informations about the process: validity range,
80  // origine ..etc..
81  // Invoked by BuildThePhysicsTable().
82 
83  void SetCrossSecFactor(G4double fac);
84  // Set the factor to artificially increase the crossSection (default 1)
85 
86  G4double GetCrossSecFactor() { return CrossSecFactor;}
87  // Get the factor to artificially increase the cross section
88 
89  G4double GetMeanFreePath(const G4Track& aTrack,
90  G4double previousStepSize,
92  // It returns the MeanFreePath of the process for the current track :
93  // (energy, material)
94  // The previousStepSize and G4ForceCondition* are not used.
95  // This function overloads a virtual function of the base class.
96  // It is invoked by the ProcessManager of the Particle.
97 
99  G4Element* anElement);
100  // It returns the total CrossSectionPerAtom of the process,
101  // for the current DynamicGamma (energy), in anElement.
102 
103  G4VParticleChange* PostStepDoIt(const G4Track& aTrack,
104  const G4Step& aStep);
105  // It computes the final state of the process (at end of step),
106  // returned as a ParticleChange object.
107  // This function overloads a virtual function of the base class.
108  // It is invoked by the ProcessManager of the Particle.
109 
110  virtual
112  G4double AtomicZ,G4double AtomicA);
113 
115  G4Material* aMaterial);
116 
117  private:
118 
119  G4Element* SelectRandomAtom(const G4DynamicParticle* aDynamicGamma,
120  G4Material* aMaterial);
121 
122  private:
123 
124  // hide assignment operator as private
127 
128  private:
129 
130  G4double LowestEnergyLimit ; // low energy limit of the tables
131  G4double HighestEnergyLimit ; // high energy limit of the tables
132 
133  G4double MeanFreePath; // actual MeanFreePath (current medium)
134  G4double CrossSecFactor; // factor to artificially increase
135  // the cross section
136 
137 };
138 
139 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
140 
141 #endif
142 
G4double condition(const G4ErrorSymMatrix &m)
G4bool IsApplicable(const G4ParticleDefinition &)
G4double ComputeMeanFreePath(G4double GammaEnergy, G4Material *aMaterial)
void BuildPhysicsTable(const G4ParticleDefinition &)
bool G4bool
Definition: G4Types.hh:79
G4VParticleChange * PostStepDoIt(const G4Track &aTrack, const G4Step &aStep)
virtual G4double ComputeCrossSectionPerAtom(G4double GammaEnergy, G4double AtomicZ, G4double AtomicA)
G4double GetCrossSectionPerAtom(const G4DynamicParticle *aDynamicGamma, G4Element *anElement)
Definition: G4Step.hh:76
G4GammaConversionToMuons(const G4String &processName="GammaToMuPair", G4ProcessType type=fElectromagnetic)
double G4double
Definition: G4Types.hh:76
G4ForceCondition
G4double GetMeanFreePath(const G4Track &aTrack, G4double previousStepSize, G4ForceCondition *condition)
G4ProcessType