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G4DipBustGenerator.hh
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25 //
26 //
27 // -------------------------------------------------------------------
28 //
29 // GEANT4 Class header file
30 //
31 //
32 // File name: G4DipBustGenerator
33 //
34 // Author: Vladimir Grichine
35 // Creation date: 17 May 2011
36 //
37 // Modifications:
38 //
39 //
40 // Bremsstrahlung Angular Distribution Generation
41 // suggested the dipole approximation in the rest frame of electron
42 // busted in the laboratory frame.
43 //
44 // -------------------------------------------------------------------
45 //
46 
47 #ifndef G4DipBustGenerator_h
48 #define G4DipBustGenerator_h 1
49 
50 #include "G4ios.hh"
51 #include "globals.hh"
53 
55 {
56 
57 public:
58 
59  explicit G4DipBustGenerator(const G4String& name = "");
60 
61  virtual ~G4DipBustGenerator();
62 
64  G4double out_energy, G4int Z,
65  const G4Material* mat = nullptr) final;
66 
67  virtual void SamplePairDirections(const G4DynamicParticle* dp,
68  G4double elecKinEnergy,
69  G4double posiKinEnergy,
70  G4ThreeVector& dirElectron,
71  G4ThreeVector& dirPositron,
72  G4int Z = 0,
73  const G4Material* mat = nullptr) final;
74 
75  G4double PolarAngle(G4double initial_energy,
76  G4double final_energy,
77  G4int Z);
78 
79  virtual void PrintGeneratorInformation() const final;
80 
81 private:
82 
83  G4double SampleCosTheta(G4double kinEnergy);
84 
85  // hide assignment operator
87  G4DipBustGenerator(const G4DipBustGenerator&) = delete;
88 
89 };
90 
91 #endif
92