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26 // 23 //
>> 24 // $Id: G4AnnihiToMuPair.hh,v 1.1 2004/11/19 18:44:04 vnivanch Exp $
>> 25 // GEANT4 tag $Name: geant4-08-00 $
27 // 26 //
28 // ------------ G4AnnihiToMuPair physi 27 // ------------ G4AnnihiToMuPair physics process ------
29 // by H.Burkhardt, S. Kelner and R. Ko 28 // by H.Burkhardt, S. Kelner and R. Kokoulin, November 2002
30 // ------------------------------------------- 29 // -----------------------------------------------------------------------------
31 30
32 // class description 31 // class description
33 // 32 //
34 // (high energy) e+ (atomic) e- ---> mu+ mu- 33 // (high energy) e+ (atomic) e- ---> mu+ mu-
35 // inherit from G4VDiscreteProcess 34 // inherit from G4VDiscreteProcess
36 // 35 //
37 //....oooOO0OOooo........oooOO0OOooo........oo 36 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......//
38 // 37 //
39 // 04.02.03 : cosmetic simplifications (mma) 38 // 04.02.03 : cosmetic simplifications (mma)
40 // 27.01.03 : first implementation (hbu) 39 // 27.01.03 : first implementation (hbu)
41 // 40 //
42 //....oooOO0OOooo........oooOO0OOooo........oo 41 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
43 42
44 #ifndef G4AnnihiToMuPair_h 43 #ifndef G4AnnihiToMuPair_h
45 #define G4AnnihiToMuPair_h 1 44 #define G4AnnihiToMuPair_h 1
46 45
47 #include "G4VDiscreteProcess.hh" 46 #include "G4VDiscreteProcess.hh"
48 #include "globals.hh" 47 #include "globals.hh"
49 48
50 class G4LossTableManager; <<
51 class G4ParticleDefinition; 49 class G4ParticleDefinition;
52 class G4Track; 50 class G4Track;
53 class G4Step; 51 class G4Step;
54 52
55 //....oooOO0OOooo........oooOO0OOooo........oo 53 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
56 54
57 class G4AnnihiToMuPair : public G4VDiscretePro 55 class G4AnnihiToMuPair : public G4VDiscreteProcess
58 { 56 {
59 public: // with description << 57 public: // with description
60 58
61 explicit G4AnnihiToMuPair(const G4String& pr << 59 G4AnnihiToMuPair(const G4String& processName ="AnnihiToMuPair",
62 G4ProcessType type = fElectromagneti << 60 G4ProcessType type = fElectromagnetic);
63 61
64 ~G4AnnihiToMuPair() override; << 62 ~G4AnnihiToMuPair();
65 63
66 G4bool IsApplicable(const G4ParticleDefiniti << 64 G4bool IsApplicable(const G4ParticleDefinition&);
67 // true for positron only. << 65 // true for positron only.
68 << 66
69 void BuildPhysicsTable(const G4ParticleDefin << 67 void BuildPhysicsTable(const G4ParticleDefinition&);
70 // here dummy, just calling PrintInfoDefinit << 68 // here dummy, just calling PrintInfoDefinition
71 // the total cross section is calculated ana << 69 // the total cross section is calculated analytically
72 << 70
73 void PrintInfoDefinition(); << 71 void PrintInfoDefinition();
74 // Print few lines of informations about the << 72 // Print few lines of informations about the process: validity range,
75 // origine ..etc.. << 73 // origine ..etc..
76 // Invoked by BuildPhysicsTable(). << 74 // Invoked by BuildPhysicsTable().
77 << 75
78 void SetCrossSecFactor(G4double fac); << 76 void SetCrossSecFactor(G4double fac);
79 // Set the factor to artificially increase t << 77 // Set the factor to artificially increase the crossSection (default 1)
80 << 78
81 G4double GetCrossSecFactor() {return fCrossS << 79 G4double GetCrossSecFactor() {return CrossSecFactor;};
82 // Get the factor to artificially increase t << 80 // Get the factor to artificially increase the cross section
83 << 81
84 G4double CrossSectionPerVolume(G4double posi << 82 virtual
85 << 83 G4double ComputeCrossSectionPerAtom(G4double PositronEnergy,
86 G4double ComputeCrossSectionPerElectron(cons << 84 G4double AtomicZ);
87 << 85 // Compute total cross section
88 G4double ComputeCrossSectionPerAtom(const G4 << 86
89 << 87 G4double GetMeanFreePath(const G4Track& aTrack,
90 G4double GetMeanFreePath(const G4Track& aTra << 88 G4double previousStepSize,
91 G4double previousStepSize, << 89 G4ForceCondition* );
92 G4ForceCondition* ) override; << 90 // It returns the MeanFreePath of the process for the current track :
93 // It returns the MeanFreePath of the proces << 91 // (energy, material)
94 // (energy, material) << 92 // The previousStepSize and G4ForceCondition* are not used.
95 // The previousStepSize and G4ForceCondition << 93 // This function overloads a virtual function of the base class.
96 // This function overloads a virtual functio << 94 // It is invoked by the ProcessManager of the Particle.
97 // It is invoked by the ProcessManager of th << 95
98 << 96 G4VParticleChange* PostStepDoIt(const G4Track& aTrack,
99 G4VParticleChange* PostStepDoIt(const G4Trac << 97 const G4Step& aStep);
100 const G4Step& aStep) override; << 98 // It computes the final state of the process (at end of step),
101 // It computes the final state of the proces << 99 // returned as a ParticleChange object.
102 // returned as a ParticleChange object. << 100 // This function overloads a virtual function of the base class.
103 // This function overloads a virtual functio << 101 // It is invoked by the ProcessManager of the Particle.
104 // It is invoked by the ProcessManager of th << 102
105 << 103 private:
106 // hide assignment operator as private << 104
107 G4AnnihiToMuPair& operator=(const G4AnnihiTo << 105 // hide assignment operator as private
108 G4AnnihiToMuPair(const G4AnnihiToMuPair& ) = << 106 G4AnnihiToMuPair& operator=(const G4AnnihiToMuPair &right);
109 << 107 G4AnnihiToMuPair(const G4AnnihiToMuPair& );
110 private: << 108
111 << 109 private:
112 G4LossTableManager* fManager; << 110
113 const G4ParticleDefinition* part1; << 111 G4double LowestEnergyLimit; // Energy threshold of e+
114 const G4ParticleDefinition* part2; << 112 G4double HighestEnergyLimit; // Limit of validity of the model
115 G4double fMass; << 113
116 << 114 G4double CrossSecFactor; // factor to artificially increase
117 G4double fLowEnergyLimit; // Energy thresho << 115 // the cross section, static to make sure
118 G4double fHighEnergyLimit; // Limit of valid << 116 // to have single value
119 G4double fCurrentSigma; // the last value <<
120 G4double fCrossSecFactor; // factor to incr <<
121 G4String fInfo = "e+e->mu+mu-"; <<
122 }; 117 };
123 118
124 //....oooOO0OOooo........oooOO0OOooo........oo 119 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
125 120
126 #endif 121 #endif
127 122
128 123