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1 //
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25 //
26 //
27 // -------------------------------------------------------------------
28 //
29 // GEANT4 Class header file
30 //
31 //
32 // File name: G4eplusAnnihilation
33 //
34 // Author: Vladimir Ivanchenko on base of Michel Maire code
35 //
36 // Creation date: 02.08.2004
37 //
38 // Modifications:
39 // 08-11-04 Migration to new interface of Store/Retrieve tables (V.Ivanchenko)
40 // 15-03-05 Update interface according to changings
41 // in G4VEmProcess (V.Ivanchenko)
42 // 08-04-05 Major optimisation of internal interfaces (V.Ivanchenko)
43 // 04-05-05 Make class to be default (V.Ivanchenko)
44 // 04-12-05 SetProposedKineticEnergy(0.) for annihilated positron (mma)
45 // 09-08-06 add SetModel(G4VEmModel*) (mma)
46 // 12-09-06, move SetModel(G4VEmModel*) in G4VEmProcess (mma)
47 //
48 //
49 // Class Description:
50 //
51 // This class manages the process of e+ annihilation at rest and on fly
52 // It is possible to enable ApplyCuts and Entanglement options via
53 // G4EmParameters class using UI commands or C++ interface.
54 // EM splitting or Russian roulette are allowed is corresponding options
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
68 class G4eplusAnnihilation : public G4VEmProcess
69 {
70
71 public:
72
73 explicit G4eplusAnnihilation(const G4String& name = "annihil");
74
75 ~G4eplusAnnihilation() override;
76
77 G4bool IsApplicable(const G4ParticleDefinition& p) final;
78
79 G4VParticleChange* AtRestDoIt(
80 const G4Track& track,
81 const G4Step& stepData) override;
82
83 G4double AtRestGetPhysicalInteractionLength(
84 const G4Track& track,
85 G4ForceCondition* condition
86 ) override;
87
88 // print documentation in html format
89 void ProcessDescription(std::ostream&) const override;
90
91 G4eplusAnnihilation & operator=(const G4eplusAnnihilation &right) = delete;
92 G4eplusAnnihilation(const G4eplusAnnihilation&) = delete;
93
94 protected:
95
96 void InitialiseProcess(const G4ParticleDefinition*) override;
97
98 // Print out of the class parameters
99 void StreamProcessInfo(std::ostream& outFile) const override;
100
101 private:
102
103 G4VPositronAtRestModel* f2GammaAtRestModel{nullptr};
104 G4VPositronAtRestModel* f3GammaAtRestModel{nullptr};
105 G4int fEntanglementModelID;
106 G4bool isInitialised{false};
107 G4bool fEntangled{false};
108 G4bool fApplyCuts{false};
109 };
110
111 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
112
113 #endif
114