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>> 27 // $Id: G4AnnihiToMuPair.hh,v 1.2 2006/06/29 19:32:12 gunter Exp $
>> 28 // GEANT4 tag $Name: geant4-08-02 $
27 // 29 //
28 // ------------ G4AnnihiToMuPair physi 30 // ------------ G4AnnihiToMuPair physics process ------
29 // by H.Burkhardt, S. Kelner and R. Ko 31 // by H.Burkhardt, S. Kelner and R. Kokoulin, November 2002
30 // ------------------------------------------- 32 // -----------------------------------------------------------------------------
31 33
32 // class description 34 // class description
33 // 35 //
34 // (high energy) e+ (atomic) e- ---> mu+ mu- 36 // (high energy) e+ (atomic) e- ---> mu+ mu-
35 // inherit from G4VDiscreteProcess 37 // inherit from G4VDiscreteProcess
36 // 38 //
37 //....oooOO0OOooo........oooOO0OOooo........oo 39 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......//
38 // 40 //
39 // 04.02.03 : cosmetic simplifications (mma) 41 // 04.02.03 : cosmetic simplifications (mma)
40 // 27.01.03 : first implementation (hbu) 42 // 27.01.03 : first implementation (hbu)
41 // 43 //
42 //....oooOO0OOooo........oooOO0OOooo........oo 44 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
43 45
44 #ifndef G4AnnihiToMuPair_h 46 #ifndef G4AnnihiToMuPair_h
45 #define G4AnnihiToMuPair_h 1 47 #define G4AnnihiToMuPair_h 1
46 48
47 #include "G4VDiscreteProcess.hh" 49 #include "G4VDiscreteProcess.hh"
48 #include "globals.hh" 50 #include "globals.hh"
49 51
50 class G4LossTableManager; <<
51 class G4ParticleDefinition; 52 class G4ParticleDefinition;
52 class G4Track; 53 class G4Track;
53 class G4Step; 54 class G4Step;
54 55
55 //....oooOO0OOooo........oooOO0OOooo........oo 56 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
56 57
57 class G4AnnihiToMuPair : public G4VDiscretePro 58 class G4AnnihiToMuPair : public G4VDiscreteProcess
58 { 59 {
59 public: // with description << 60 public: // with description
60 61
61 explicit G4AnnihiToMuPair(const G4String& pr << 62 G4AnnihiToMuPair(const G4String& processName ="AnnihiToMuPair",
62 G4ProcessType type = fElectromagneti << 63 G4ProcessType type = fElectromagnetic);
63 64
64 ~G4AnnihiToMuPair() override; << 65 ~G4AnnihiToMuPair();
65 66
66 G4bool IsApplicable(const G4ParticleDefiniti << 67 G4bool IsApplicable(const G4ParticleDefinition&);
67 // true for positron only. << 68 // true for positron only.
68 << 69
69 void BuildPhysicsTable(const G4ParticleDefin << 70 void BuildPhysicsTable(const G4ParticleDefinition&);
70 // here dummy, just calling PrintInfoDefinit << 71 // here dummy, just calling PrintInfoDefinition
71 // the total cross section is calculated ana << 72 // the total cross section is calculated analytically
72 << 73
73 void PrintInfoDefinition(); << 74 void PrintInfoDefinition();
74 // Print few lines of informations about the << 75 // Print few lines of informations about the process: validity range,
75 // origine ..etc.. << 76 // origine ..etc..
76 // Invoked by BuildPhysicsTable(). << 77 // Invoked by BuildPhysicsTable().
77 << 78
78 void SetCrossSecFactor(G4double fac); << 79 void SetCrossSecFactor(G4double fac);
79 // Set the factor to artificially increase t << 80 // Set the factor to artificially increase the crossSection (default 1)
80 << 81
81 G4double GetCrossSecFactor() {return fCrossS << 82 G4double GetCrossSecFactor() {return CrossSecFactor;};
82 // Get the factor to artificially increase t << 83 // Get the factor to artificially increase the cross section
83 << 84
84 G4double CrossSectionPerVolume(G4double posi << 85 virtual
85 << 86 G4double ComputeCrossSectionPerAtom(G4double PositronEnergy,
86 G4double ComputeCrossSectionPerElectron(cons << 87 G4double AtomicZ);
87 << 88 // Compute total cross section
88 G4double ComputeCrossSectionPerAtom(const G4 << 89
89 << 90 G4double GetMeanFreePath(const G4Track& aTrack,
90 G4double GetMeanFreePath(const G4Track& aTra << 91 G4double previousStepSize,
91 G4double previousStepSize, << 92 G4ForceCondition* );
92 G4ForceCondition* ) override; << 93 // It returns the MeanFreePath of the process for the current track :
93 // It returns the MeanFreePath of the proces << 94 // (energy, material)
94 // (energy, material) << 95 // The previousStepSize and G4ForceCondition* are not used.
95 // The previousStepSize and G4ForceCondition << 96 // This function overloads a virtual function of the base class.
96 // This function overloads a virtual functio << 97 // It is invoked by the ProcessManager of the Particle.
97 // It is invoked by the ProcessManager of th << 98
98 << 99 G4VParticleChange* PostStepDoIt(const G4Track& aTrack,
99 G4VParticleChange* PostStepDoIt(const G4Trac << 100 const G4Step& aStep);
100 const G4Step& aStep) override; << 101 // It computes the final state of the process (at end of step),
101 // It computes the final state of the proces << 102 // returned as a ParticleChange object.
102 // returned as a ParticleChange object. << 103 // This function overloads a virtual function of the base class.
103 // This function overloads a virtual functio << 104 // It is invoked by the ProcessManager of the Particle.
104 // It is invoked by the ProcessManager of th << 105
105 << 106 private:
106 // hide assignment operator as private << 107
107 G4AnnihiToMuPair& operator=(const G4AnnihiTo << 108 // hide assignment operator as private
108 G4AnnihiToMuPair(const G4AnnihiToMuPair& ) = << 109 G4AnnihiToMuPair& operator=(const G4AnnihiToMuPair &right);
109 << 110 G4AnnihiToMuPair(const G4AnnihiToMuPair& );
110 private: << 111
111 << 112 private:
112 G4LossTableManager* fManager; << 113
113 const G4ParticleDefinition* part1; << 114 G4double LowestEnergyLimit; // Energy threshold of e+
114 const G4ParticleDefinition* part2; << 115 G4double HighestEnergyLimit; // Limit of validity of the model
115 G4double fMass; << 116
116 << 117 G4double CrossSecFactor; // factor to artificially increase
117 G4double fLowEnergyLimit; // Energy thresho << 118 // the cross section, static to make sure
118 G4double fHighEnergyLimit; // Limit of valid << 119 // to have single value
119 G4double fCurrentSigma; // the last value <<
120 G4double fCrossSecFactor; // factor to incr <<
121 G4String fInfo = "e+e->mu+mu-"; <<
122 }; 120 };
123 121
124 //....oooOO0OOooo........oooOO0OOooo........oo 122 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
125 123
126 #endif 124 #endif
127 125
128 126