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G4HadronElastic.hh
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25 //
26 //
27 // Geant4 Header : G4HadronElastic
28 //
29 // Author : V.Ivanchenko 29 June 2009 (redesign old elastic model)
30 //
31 // Modified:
32 //
33 // Class Description
34 // Default model for elastic scattering; GHEISHA algorithm is used
35 // Class Description - End
36 
37 #ifndef G4HadronElastic_h
38 #define G4HadronElastic_h 1
39 
40 #include "globals.hh"
41 #include "G4HadronicInteraction.hh"
42 #include "G4HadProjectile.hh"
43 #include "G4Nucleus.hh"
44 #include "G4NucleiProperties.hh"
45 
47 
49 {
50 public:
51 
52  explicit G4HadronElastic(const G4String& name = "hElasticLHEP");
53 
54  ~G4HadronElastic() override;
55 
56  // implementation of the G4HadronicInteraction interface
58  G4Nucleus & targetNucleus) override;
59 
60  // sample momentum transfer using Lab. momentum
62  G4int Z, G4int A) override;
63 
64  G4double GetSlopeCof( const G4int pdg );
65 
66  inline void SetLowestEnergyLimit(G4double value);
67 
68  inline G4double LowestEnergyLimit() const;
69 
71  G4double plab, G4int Z, G4int A);
72 
73  void ModelDescription(std::ostream&) const override;
74 
75 protected:
76 
78 
79 private:
80 
85 
88 };
89 
91 {
93 }
94 
96 {
97  return lowestEnergyLimit;
98 }
99 
100 inline G4double
102  G4double plab, G4int Z, G4int A)
103 {
104  G4double m1 = p->GetPDGMass();
105  G4double m12= m1*m1;
107  return plab*mass2/std::sqrt(m12 + mass2*mass2 + 2.*mass2*std::sqrt(m12 + plab*plab));
108 }
109 
110 #endif