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27 //
28 // GEANT4 Class header file
29 //
30 //
31 // File name: G4NeutronInelasticXS
32 //
33 // Author Ivantchenko, Geant4, 3-AUG-09
34 //
35
36 // Class Description:
37 // This is a base class for neutron inelastic hadronic cross section based on
38 // data files from G4PARTICLEXSDATA data set
39 // Class Description - End
40
41 #ifndef G4NeutronInelasticXS_h
42 #define G4NeutronInelasticXS_h 1
43
44 #include "G4VCrossSectionDataSet.hh"
45 #include "globals.hh"
46 #include "G4ElementData.hh"
47 #include "G4PhysicsVector.hh"
48 #include <vector>
49
50 class G4DynamicParticle;
51 class G4ParticleDefinition;
52 class G4Element;
53 class G4VComponentCrossSection;
54
55 class G4NeutronInelasticXS final : public G4VCrossSectionDataSet
56 {
57 public:
58
59 G4NeutronInelasticXS();
60
61 ~G4NeutronInelasticXS() override = default;
62
63 static const char* Default_Name() { return "G4NeutronInelasticXS"; }
64
65 G4bool IsElementApplicable(const G4DynamicParticle*, G4int Z,
66 const G4Material*) final;
67
68 G4bool IsIsoApplicable(const G4DynamicParticle*, G4int Z, G4int A,
69 const G4Element*, const G4Material*) final;
70
71 G4double GetElementCrossSection(const G4DynamicParticle*,
72 G4int Z, const G4Material*) final;
73
74 G4double ComputeCrossSectionPerElement(G4double kinEnergy, G4double loge,
75 const G4ParticleDefinition*,
76 const G4Element*,
77 const G4Material*) final;
78
79 G4double ComputeIsoCrossSection(G4double kinEnergy, G4double loge,
80 const G4ParticleDefinition*,
81 G4int Z, G4int A,
82 const G4Isotope* iso,
83 const G4Element* elm,
84 const G4Material* mat) final;
85
86 G4double GetIsoCrossSection(const G4DynamicParticle*, G4int Z, G4int A,
87 const G4Isotope* iso,
88 const G4Element* elm,
89 const G4Material* mat) final;
90
91 const G4Isotope* SelectIsotope(const G4Element*,
92 G4double kinEnergy, G4double logE) final;
93
94 void BuildPhysicsTable(const G4ParticleDefinition&) final;
95
96 void CrossSectionDescription(std::ostream&) const final;
97
98 G4double ElementCrossSection(G4double kinEnergy, G4double loge, G4int Z);
99
100 G4double IsoCrossSection(G4double ekin, G4double logekin, G4int Z, G4int A);
101
102 G4NeutronInelasticXS & operator=(const G4NeutronInelasticXS &right) = delete;
103 G4NeutronInelasticXS(const G4NeutronInelasticXS&) = delete;
104
105 private:
106
107 void Initialise(G4int Z);
108
109 void InitialiseOnFly(G4int Z);
110
111 const G4String& FindDirectoryPath();
112
113 inline const G4PhysicsVector* GetPhysicsVector(G4int Z);
114
115 G4PhysicsVector* RetrieveVector(std::ostringstream& in, G4bool warn);
116
117 G4VComponentCrossSection* ggXsection = nullptr;
118
119 const G4ParticleDefinition* neutron;
120
121 std::vector<G4double> temp;
122
123 G4double elimit;
124 G4double lowElimit;
125 G4double loglowElimit;
126
127 G4bool isInitializer{false};
128
129 static const G4int MAXZINEL = 93;
130 static G4ElementData* data;
131 static G4double coeff[MAXZINEL];
132 static G4double lowcoeff[MAXZINEL];
133 static G4String gDataDirectory;
134 };
135
136 inline
137 const G4PhysicsVector* G4NeutronInelasticXS::GetPhysicsVector(G4int Z)
138 {
139 const G4PhysicsVector* pv = data->GetElementData(Z);
140 if (pv == nullptr) {
141 InitialiseOnFly(Z);
142 pv = data->GetElementData(Z);
143 }
144 return pv;
145 }
146
147 #endif
148