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25 // 22 //
26 // 23 //
27 // ------------------------------------------- << 24 // $Id: G4eplusAnnihilation.hh,v 1.11 2004/03/10 16:48:45 vnivanch Exp $
>> 25 // GEANT4 tag $Name: geant4-06-01 $
28 // 26 //
29 // GEANT4 Class header file <<
30 // <<
31 // <<
32 // File name: G4eplusAnnihilation <<
33 // <<
34 // Author: Vladimir Ivanchenko on base <<
35 // <<
36 // Creation date: 02.08.2004 <<
37 // <<
38 // Modifications: <<
39 // 08-11-04 Migration to new interface of Stor <<
40 // 15-03-05 Update interface according to chan <<
41 // in G4VEmProcess (V.Ivanchenko) <<
42 // 08-04-05 Major optimisation of internal int <<
43 // 04-05-05 Make class to be default (V.Ivanch <<
44 // 04-12-05 SetProposedKineticEnergy(0.) for a <<
45 // 09-08-06 add SetModel(G4VEmModel*) (mma) <<
46 // 12-09-06, move SetModel(G4VEmModel*) in G4V <<
47 // <<
48 // <<
49 // Class Description: <<
50 // <<
51 // This class manages the process of e+ annihi <<
52 // It is possible to enable ApplyCuts and Enta <<
53 // G4EmParameters class using UI commands or C <<
54 // EM splitting or Russian roulette are allowe <<
55 // are enabled. <<
56 // <<
57 // ------------------------------------------- <<
58 // <<
59 <<
60 #ifndef G4eplusAnnihilation_h <<
61 #define G4eplusAnnihilation_h 1 <<
62 <<
63 #include "G4VEmProcess.hh" <<
64 <<
65 class G4ParticleDefinition; <<
66 class G4VPositronAtRestModel; <<
67 27
68 class G4eplusAnnihilation : public G4VEmProces << 28 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
69 { <<
70 <<
71 public: <<
72 <<
73 explicit G4eplusAnnihilation(const G4String& <<
74 <<
75 ~G4eplusAnnihilation() override; <<
76 <<
77 G4bool IsApplicable(const G4ParticleDefiniti <<
78 <<
79 G4VParticleChange* AtRestDoIt( <<
80 const G4Track& tr <<
81 const G4Step& ste <<
82 <<
83 G4double AtRestGetPhysicalInteractionLength( <<
84 const G4Track& tr <<
85 G4ForceCondition* <<
86 ) override; <<
87 29
88 // print documentation in html format << 30 // 10-01-97, crossection table + meanfreepath table, M.Maire
89 void ProcessDescription(std::ostream&) const << 31 // 17-03-97, merge 'in fly' and 'at rest', M.Maire
>> 32 // 31-08-98, new methods SetBining() and PrintInfo()
>> 33 // 03-08-01, new methods Store/Retrieve PhysicsTable (mma)
>> 34 // 06-08-01, BuildThePhysicsTable() called from constructor (mma)
>> 35 // 20-09-01, DoIt: fminimalEnergy = 1*eV (mma)
>> 36 // 01-10-01, come back to BuildPhysicsTable(const G4ParticleDefinition&)
>> 37 //
90 38
91 G4eplusAnnihilation & operator=(const G4eplu << 39 // class description
92 G4eplusAnnihilation(const G4eplusAnnihilatio << 40 //
>> 41 // e+ e- ---> gamma gamma
>> 42 // inherit from G4VRestDiscreteProcess
>> 43 //
93 44
94 protected: << 45 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
>> 46 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
95 47
96 void InitialiseProcess(const G4ParticleDefin << 48 #ifndef G4eplusAnnihilation_h
>> 49 #define G4eplusAnnihilation_h 1
97 50
98 // Print out of the class parameters << 51 #include "G4ios.hh"
99 void StreamProcessInfo(std::ostream& outFile << 52 #include "globals.hh"
>> 53 #include "Randomize.hh"
>> 54 #include "G4VRestDiscreteProcess.hh"
>> 55 #include "G4PhysicsTable.hh"
>> 56 #include "G4PhysicsLogVector.hh"
>> 57 #include "G4ElementTable.hh"
>> 58 #include "G4Gamma.hh"
>> 59 #include "G4Positron.hh"
>> 60 #include "G4Step.hh"
100 61
101 private: << 62 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
102 63
103 G4VPositronAtRestModel* f2GammaAtRestModel{n << 64 class G4eplusAnnihilation : public G4VRestDiscreteProcess
104 G4VPositronAtRestModel* f3GammaAtRestModel{n << 65
105 G4int fEntanglementModelID; << 66 {
106 G4bool isInitialised{false}; << 67 public: // with description
107 G4bool fEntangled{false}; << 68
108 G4bool fApplyCuts{false}; << 69 G4eplusAnnihilation(const G4String& processName ="annihil",
>> 70 G4ProcessType type = fElectromagnetic);
>> 71
>> 72 ~G4eplusAnnihilation();
>> 73
>> 74 G4bool IsApplicable(const G4ParticleDefinition&);
>> 75 // true for positron only.
>> 76
>> 77 void SetPhysicsTableBining(G4double lowE, G4double highE, G4int nBins);
>> 78 // Allows to define the binning of the PhysicsTables,
>> 79 // before to build them.
>> 80
>> 81 void BuildPhysicsTable(const G4ParticleDefinition&);
>> 82 // It builds the total CrossSectionPerAtom table, for e+,
>> 83 // and for every element contained in the elementTable.
>> 84 // It builds the MeanFreePath table, for e+,
>> 85 // and for every material contained in the materialTable.
>> 86
>> 87 G4bool StorePhysicsTable(G4ParticleDefinition* ,
>> 88 const G4String& directory, G4bool);
>> 89 // store CrossSection and MeanFreePath tables into an external file
>> 90 // specified by 'directory' (must exist before invokation)
>> 91
>> 92 G4bool RetrievePhysicsTable(G4ParticleDefinition* ,
>> 93 const G4String& directory, G4bool);
>> 94 // retrieve CrossSection and MeanFreePath tables from an external file
>> 95 // specified by 'directory'
>> 96
>> 97 void PrintInfoDefinition();
>> 98 // Print few lines of informations about the process: validity range,
>> 99 // origine ..etc..
>> 100 // Invoked by BuildThePhysicsTable().
>> 101
>> 102 G4double GetMeanFreePath(const G4Track& aTrack,
>> 103 G4double previousStepSize,
>> 104 G4ForceCondition* condition);
>> 105 // It returns the MeanFreePath of the process for the current track :
>> 106 // (energy, material)
>> 107 // The previousStepSize and G4ForceCondition* are not used.
>> 108 // This function overloads a virtual function of the base class.
>> 109 // It is invoked by the ProcessManager of the Particle.
>> 110
>> 111 G4double GetCrossSectionPerAtom(G4DynamicParticle* aDynamicPositron,
>> 112 G4Element* anElement);
>> 113 // It returns the total CrossSectionPerAtom of the process,
>> 114 // for the current DynamicPositron (energy), in anElement.
>> 115
>> 116 G4VParticleChange* PostStepDoIt(const G4Track& aTrack,
>> 117 const G4Step& aStep);
>> 118 // It computes the final state of the process (at end of step),
>> 119 // returned as a ParticleChange object.
>> 120 // This function overloads a virtual function of the base class.
>> 121 // It is invoked by the ProcessManager of the Particle.
>> 122
>> 123 G4double GetMeanLifeTime(const G4Track& aTrack,
>> 124 G4ForceCondition* condition);
>> 125 // It is invoked by the ProcessManager of the Positron if this
>> 126 // e+ has a kinetic energy null. Then it return 0 to force the
>> 127 // call of AtRestDoIt.
>> 128 // This function overloads a virtual function of the base class.
>> 129
>> 130 G4VParticleChange* AtRestDoIt(const G4Track& aTrack,
>> 131 const G4Step& aStep);
>> 132 // It computes the final state of the process:
>> 133 // e+ (at rest) e- (at rest) ---> gamma gamma,
>> 134 // returned as a ParticleChange object.
>> 135 // This function overloads a virtual function of the base class.
>> 136 // It is invoked by the ProcessManager of the Particle.
>> 137
>> 138 protected:
>> 139
>> 140 virtual G4double ComputeCrossSectionPerAtom(G4double PositKinEnergy,
>> 141 G4double AtomicNumber);
>> 142
>> 143 virtual G4double ComputeMeanFreePath(G4double PositKinEnergy,
>> 144 G4Material* aMaterial);
>> 145
>> 146 private:
>> 147
>> 148 // hide assignment operator as private
>> 149 G4eplusAnnihilation& operator=(const G4eplusAnnihilation& right);
>> 150 G4eplusAnnihilation(const G4eplusAnnihilation& );
>> 151
>> 152 private:
>> 153
>> 154 G4PhysicsTable* theCrossSectionTable;
>> 155 G4PhysicsTable* theMeanFreePathTable;
>> 156
>> 157 G4double LowestEnergyLimit; // low energy limit of the tables
>> 158 G4double HighestEnergyLimit; // high energy limit of the tables
>> 159 G4int NumbBinTable; // number of bins in the tables
>> 160 G4double fminimalEnergy; // minimalEnergy of produced particles
109 }; 161 };
110 162
111 //....oooOO0OOooo........oooOO0OOooo........oo 163 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
112 164
>> 165 #include "G4eplusAnnihilation.icc"
>> 166
113 #endif 167 #endif
>> 168
114 169