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25 //
26 // author: Vladimir.Grichine@cern.ch
27 //
28 // Implements data from: Barashenkov V.S., Nucleon-Nucleus Cross Section,
29 // Preprint JINR P2-89-770, p. 12, Dubna 1989 (scanned version from KEK)
30 // Based on G. Folger version of G4PiNuclearCrossSection class
31 //
32 // Modified: 16.08.2018 V.Ivanchenko - major update
33 //
34
35 #include "G4NucleonNuclearCrossSection.hh"
36 #include "G4DynamicParticle.hh"
37 #include "G4ParticleDefinition.hh"
38 #include "G4ComponentBarNucleonNucleusXsc.hh"
39
40 ///////////////////////////////////////////////////////////////////////////////
41
42 G4NucleonNuclearCrossSection::G4NucleonNuclearCrossSection()
43 : G4VCrossSectionDataSet(Default_Name())
44 {
45 fBarash = new G4ComponentBarNucleonNucleusXsc();
46 }
47
48 ////////////////////////////////////////////////////////////////////////////
49
50 G4bool G4NucleonNuclearCrossSection::IsElementApplicable(
51 const G4DynamicParticle*, G4int Z, const G4Material*)
52 {
53 return (Z > 1);
54 }
55
56 ////////////////////////////////////////////////////////////////////////////
57
58 G4double G4NucleonNuclearCrossSection::GetElementCrossSection(
59 const G4DynamicParticle* dp, G4int Z, const G4Material*)
60 {
61 ComputeCrossSections(dp->GetDefinition(), dp->GetKineticEnergy(), Z);
62 return fInelasticXsc;
63 }
64
65 ////////////////////////////////////////////////////////////////////////////
66
67 void G4NucleonNuclearCrossSection::ComputeCrossSections(
68 const G4ParticleDefinition* pd,
69 G4double kinEnergy, G4int Z)
70 {
71 fBarash->ComputeCrossSections(pd, kinEnergy, Z);
72 fTotalXsc = fBarash->GetTotalXsc();
73 fInelasticXsc = fBarash->GetInelasticXsc();
74 fElasticXsc = fBarash->GetElasticXsc();
75 }
76
77 ////////////////////////////////////////////////////////////////////////////
78
79 void
80 G4NucleonNuclearCrossSection::CrossSectionDescription(std::ostream& outFile) const
81 {
82 outFile << "G4NucleonNuclearCrossSection is a variant of the Barashenkov\n"
83 << "cross section parameterization to be used of protons and\n"
84 << "nucleons on targets heavier than hydrogen. It is intended for\n"
85 << "use as a cross section component and is currently used by\n"
86 << "G4BGGNucleonInelasticXS. It is valid for incident energies up\n"
87 << "to 1 TeV.\n";
88 }
89
90 ////////////////////////////////////////////////////////////////////////////
91
92