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25 // 22 //
26 // 23 //
27 // ------------------------------------------- << 24 // $Id: G4eplusAnnihilation.hh,v 1.15 2004/11/10 08:53:19 vnivanch Exp $
>> 25 // GEANT4 tag $Name: geant4-07-00-cand-01 $
28 // 26 //
29 // GEANT4 Class header file << 27
30 // << 28 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
31 // << 29
32 // File name: G4eplusAnnihilation << 30 // 10-01-97, crossection table + meanfreepath table, M.Maire
33 // << 31 // 17-03-97, merge 'in fly' and 'at rest', M.Maire
34 // Author: Vladimir Ivanchenko on base << 32 // 31-08-98, new methods SetBining() and PrintInfo()
35 // << 33 // 03-08-01, new methods Store/Retrieve PhysicsTable (mma)
36 // Creation date: 02.08.2004 << 34 // 06-08-01, BuildThePhysicsTable() called from constructor (mma)
37 // << 35 // 20-09-01, DoIt: fminimalEnergy = 1*eV (mma)
38 // Modifications: << 36 // 01-10-01, come back to BuildPhysicsTable(const G4ParticleDefinition&)
39 // 08-11-04 Migration to new interface of Stor << 37 // 05-08-04, suppress .icc file
40 // 15-03-05 Update interface according to chan << 38 // 13-08-04, public ComputeCrossSectionPerAtom() and ComputeMeanFreePath()
41 // in G4VEmProcess (V.Ivanchenko) << 39 // 09-11-04, Remove Store/Retrieve tables (V.Ivantchenko)
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 // 40 //
51 // This class manages the process of e+ annihi << 41
52 // It is possible to enable ApplyCuts and Enta << 42 // class description
53 // G4EmParameters class using UI commands or C <<
54 // EM splitting or Russian roulette are allowe <<
55 // are enabled. <<
56 // 43 //
57 // ------------------------------------------- << 44 // e+ e- ---> gamma gamma
>> 45 // inherit from G4VRestDiscreteProcess
58 // 46 //
59 47
>> 48 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
>> 49 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
>> 50
60 #ifndef G4eplusAnnihilation_h 51 #ifndef G4eplusAnnihilation_h
61 #define G4eplusAnnihilation_h 1 52 #define G4eplusAnnihilation_h 1
62 53
63 #include "G4VEmProcess.hh" << 54 #include "G4ios.hh"
>> 55 #include "globals.hh"
>> 56 #include "Randomize.hh"
>> 57 #include "G4VRestDiscreteProcess.hh"
>> 58 #include "G4PhysicsTable.hh"
>> 59 #include "G4PhysicsLogVector.hh"
>> 60 #include "G4ElementTable.hh"
>> 61 #include "G4Gamma.hh"
>> 62 #include "G4Positron.hh"
>> 63 #include "G4Step.hh"
64 64
65 class G4ParticleDefinition; << 65 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
66 class G4VPositronAtRestModel; <<
67 <<
68 class G4eplusAnnihilation : public G4VEmProces <<
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 <<
88 // print documentation in html format <<
89 void ProcessDescription(std::ostream&) const <<
90 <<
91 G4eplusAnnihilation & operator=(const G4eplu <<
92 G4eplusAnnihilation(const G4eplusAnnihilatio <<
93 <<
94 protected: <<
95 <<
96 void InitialiseProcess(const G4ParticleDefin <<
97 <<
98 // Print out of the class parameters <<
99 void StreamProcessInfo(std::ostream& outFile <<
100 66
101 private: << 67 class G4eplusAnnihilation : public G4VRestDiscreteProcess
102 68
103 G4VPositronAtRestModel* f2GammaAtRestModel{n << 69 {
104 G4VPositronAtRestModel* f3GammaAtRestModel{n << 70 public: // with description
105 G4int fEntanglementModelID; << 71
106 G4bool isInitialised{false}; << 72 G4eplusAnnihilation(const G4String& processName ="annihil",
107 G4bool fEntangled{false}; << 73 G4ProcessType type = fElectromagnetic);
108 G4bool fApplyCuts{false}; << 74
>> 75 ~G4eplusAnnihilation();
>> 76
>> 77 G4bool IsApplicable(const G4ParticleDefinition&);
>> 78 // true for positron only.
>> 79
>> 80 void SetPhysicsTableBining(G4double lowE, G4double highE, G4int nBins);
>> 81 // Allows to define the binning of the PhysicsTables,
>> 82 // before to build them.
>> 83
>> 84 void BuildPhysicsTable(const G4ParticleDefinition&);
>> 85 // It builds the total CrossSectionPerAtom table, for e+,
>> 86 // and for every element contained in the elementTable.
>> 87 // It builds the MeanFreePath table, for e+,
>> 88 // and for every material contained in the materialTable.
>> 89
>> 90 G4bool StorePhysicsTable(const G4ParticleDefinition* ,
>> 91 const G4String& directory, G4bool);
>> 92 // store CrossSection and MeanFreePath tables into an external file
>> 93 // specified by 'directory' (must exist before invokation)
>> 94
>> 95 //G4bool RetrievePhysicsTable(const G4ParticleDefinition* ,
>> 96 // const G4String& directory, G4bool);
>> 97 // retrieve CrossSection and MeanFreePath tables from an external file
>> 98 // specified by 'directory'
>> 99
>> 100 void PrintInfoDefinition();
>> 101 // Print few lines of informations about the process: validity range,
>> 102 // origine ..etc..
>> 103 // Invoked by BuildThePhysicsTable().
>> 104
>> 105 G4double GetMeanFreePath(const G4Track& aTrack,
>> 106 G4double previousStepSize,
>> 107 G4ForceCondition* condition);
>> 108 // It returns the MeanFreePath of the process for the current track :
>> 109 // (energy, material)
>> 110 // The previousStepSize and G4ForceCondition* are not used.
>> 111 // This function overloads a virtual function of the base class.
>> 112 // It is invoked by the ProcessManager of the Particle.
>> 113
>> 114 G4double GetCrossSectionPerAtom(G4DynamicParticle* aDynamicPositron,
>> 115 G4Element* anElement);
>> 116 // It returns the total CrossSectionPerAtom of the process,
>> 117 // for the current DynamicPositron (energy), in anElement.
>> 118
>> 119 G4VParticleChange* PostStepDoIt(const G4Track& aTrack,
>> 120 const G4Step& aStep);
>> 121 // It computes the final state of the process (at end of step),
>> 122 // returned as a ParticleChange object.
>> 123 // This function overloads a virtual function of the base class.
>> 124 // It is invoked by the ProcessManager of the Particle.
>> 125
>> 126 G4double GetMeanLifeTime(const G4Track& aTrack,
>> 127 G4ForceCondition* condition);
>> 128 // It is invoked by the ProcessManager of the Positron if this
>> 129 // e+ has a kinetic energy null. Then it return 0 to force the
>> 130 // call of AtRestDoIt.
>> 131 // This function overloads a virtual function of the base class.
>> 132
>> 133 G4VParticleChange* AtRestDoIt(const G4Track& aTrack,
>> 134 const G4Step& aStep);
>> 135 // It computes the final state of the process:
>> 136 // e+ (at rest) e- (at rest) ---> gamma gamma,
>> 137 // returned as a ParticleChange object.
>> 138 // This function overloads a virtual function of the base class.
>> 139 // It is invoked by the ProcessManager of the Particle.
>> 140
>> 141 virtual
>> 142 G4double ComputeCrossSectionPerAtom(G4double PositKinEnergy,
>> 143 G4double AtomicNumber);
>> 144
>> 145 G4double ComputeMeanFreePath(G4double PositKinEnergy,
>> 146 G4Material* aMaterial);
>> 147
>> 148 private:
>> 149
>> 150 // hide assignment operator as private
>> 151 G4eplusAnnihilation& operator=(const G4eplusAnnihilation& right);
>> 152 G4eplusAnnihilation(const G4eplusAnnihilation& );
>> 153
>> 154 private:
>> 155
>> 156 G4PhysicsTable* theCrossSectionTable;
>> 157 G4PhysicsTable* theMeanFreePathTable;
>> 158
>> 159 G4double LowestEnergyLimit; // low energy limit of the tables
>> 160 G4double HighestEnergyLimit; // high energy limit of the tables
>> 161 G4int NumbBinTable; // number of bins in the tables
>> 162 G4double fminimalEnergy; // minimalEnergy of produced particles
109 }; 163 };
110 164
111 //....oooOO0OOooo........oooOO0OOooo........oo 165 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
112 << 166
113 #endif 167 #endif
>> 168
114 169