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G4DiffElasticRatio.cc
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26 // $Id: G4DiffElasticRatio.cc 66241 2012-12-13 18:34:42Z gunter $
27 //
28 // -------------------------------------------------------------------
29 //
30 // GEANT4 Class file
31 //
32 //
33 // File name: G4DiffElasticRatio
34 //
35 // Author: V.Grichine 07.10.2014
36 //
37 // Modifications:
38 //
39 // 16.03.15 V. Grichine safety against H ( A > 1 only )
40 
41 #include "G4DiffElasticRatio.hh"
42 #include "G4ParticleDefinition.hh"
43 #include "G4DiffElasticRatio.hh"
45 
47  : G4VCrossSectionRatio( nam, verb)
48 {
49  fGGXsc = new G4ComponentGGHadronNucleusXsc();
50  fDDthreshold = 450.*CLHEP::MeV; // ~3 pi masses
51 }
52 
54 {
55  if(fGGXsc) delete fGGXsc;
56 }
57 
58 
60  G4double kinEnergy,
61  G4int Z, G4int A)
62 {
63  G4double ratio = 0.;
64 
65  if( A > 1 && kinEnergy > fDDthreshold )
66  {
67  G4double ggElXsc = fGGXsc->GetElasticElementCrossSection(theParticleDefinition,kinEnergy,
68  Z,A);
69  G4double ggsdXsc = fGGXsc->GetDiffractionGlauberGribovXsc();
70 
71  if( ggElXsc > 0.) ratio = ggsdXsc/ggElXsc;
72  else ratio = 0;
73  }
74  // G4cout<<theParticleDefinition->GetParticleName()<<"; "<<kinEnergy/CLHEP::GeV<<" GeV; r = "<<ratio<<G4endl;
75  return ratio;
76 }
G4DiffElasticRatio(const G4String &nam="", G4int verb=0)
G4double ComputeRatio(const G4ParticleDefinition *, G4double kinEnergy, G4int Z, G4int A)
int G4int
Definition: G4Types.hh:78
double A(double temperature)
static constexpr double MeV
double G4double
Definition: G4Types.hh:76
virtual G4double GetElasticElementCrossSection(const G4ParticleDefinition *aParticle, G4double kinEnergy, G4int Z, G4double A)