| Geant4 Cross Reference |
1 //
2 // ********************************************************************
3 // * License and Disclaimer *
4 // * *
5 // * The Geant4 software is copyright of the Copyright Holders of *
6 // * the Geant4 Collaboration. It is provided under the terms and *
7 // * conditions of the Geant4 Software License, included in the file *
8 // * LICENSE and available at http://cern.ch/geant4/license . These *
9 // * include a list of copyright holders. *
10 // * *
11 // * Neither the authors of this software system, nor their employing *
12 // * institutes,nor the agencies providing financial support for this *
13 // * work make any representation or warranty, express or implied, *
14 // * regarding this software system or assume any liability for its *
15 // * use. Please see the license in the file LICENSE and URL above *
16 // * for the full disclaimer and the limitation of liability. *
17 // * *
18 // * This code implementation is the result of the scientific and *
19 // * technical work of the GEANT4 collaboration. *
20 // * By using, copying, modifying or distributing the software (or *
21 // * any work based on the software) you agree to acknowledge its *
22 // * use in resulting scientific publications, and indicate your *
23 // * acceptance of all terms of the Geant4 Software license. *
24 // ********************************************************************
25 //
26 // -------------------------------------------------------------------
27 //
28 // GEANT4 Class header file
29 //
30 //
31 // File name: G4NeutronCaptureXS
32 //
33 // Author Ivantchenko, Geant4, 3-AUG-09
34 //
35 // Modifications:
36 //
37
38 // Class Description:
39 // This is a base class for neutron radiative capture cross section based on
40 // data files from G4PARTICLEXSDATA data set
41 // Class Description - End
42
43 #ifndef G4NeutronCaptureXS_h
44 #define G4NeutronCaptureXS_h 1
45
46 #include "G4VCrossSectionDataSet.hh"
47 #include "globals.hh"
48 #include "G4ElementData.hh"
49 #include "G4PhysicsVector.hh"
50 #include <vector>
51 #include <iostream>
52
53 class G4DynamicParticle;
54 class G4ParticleDefinition;
55 class G4Element;
56
57 class G4NeutronCaptureXS final : public G4VCrossSectionDataSet
58 {
59 public:
60
61 G4NeutronCaptureXS();
62
63 ~G4NeutronCaptureXS() override = default;
64
65 static const char* Default_Name() {return "G4NeutronCaptureXS";}
66
67 G4bool IsElementApplicable(const G4DynamicParticle*, G4int Z,
68 const G4Material*) final;
69
70 G4bool IsIsoApplicable(const G4DynamicParticle*, G4int Z, G4int A,
71 const G4Element*, const G4Material*) final;
72
73 G4double GetElementCrossSection(const G4DynamicParticle*,
74 G4int Z, const G4Material*) final;
75
76 G4double ComputeCrossSectionPerElement(G4double kinEnergy, G4double loge,
77 const G4ParticleDefinition*,
78 const G4Element*,
79 const G4Material*) final;
80
81 G4double ComputeIsoCrossSection(G4double kinEnergy, G4double loge,
82 const G4ParticleDefinition*,
83 G4int Z, G4int A,
84 const G4Isotope* iso,
85 const G4Element* elm,
86 const G4Material* mat) final;
87
88 G4double GetIsoCrossSection(const G4DynamicParticle*, G4int Z, G4int A,
89 const G4Isotope* iso,
90 const G4Element* elm,
91 const G4Material* mat) final;
92
93 const G4Isotope* SelectIsotope(const G4Element*, G4double kinEnergy,
94 G4double logE) final;
95
96 void BuildPhysicsTable(const G4ParticleDefinition&) final;
97
98 void CrossSectionDescription(std::ostream&) const final;
99
100 G4double ElementCrossSection(G4double kinEnergy, G4double loge, G4int Z);
101
102 G4double IsoCrossSection(G4double ekin, G4double logekin, G4int Z, G4int A);
103
104 G4NeutronCaptureXS & operator=(const G4NeutronCaptureXS &right) = delete;
105 G4NeutronCaptureXS(const G4NeutronCaptureXS&) = delete;
106
107 private:
108
109 void Initialise(G4int Z);
110
111 void InitialiseOnFly(G4int Z);
112
113 const G4String& FindDirectoryPath();
114
115 inline const G4PhysicsVector* GetPhysicsVector(G4int Z);
116
117 G4PhysicsVector* RetrieveVector(std::ostringstream& in, G4bool warn);
118
119 G4double emax;
120 G4double elimit;
121 G4double logElimit;
122
123 std::vector<G4double> temp;
124
125 G4bool isInitializer{false};
126
127 static G4ElementData* data;
128 static G4String gDataDirectory;
129 };
130
131 inline
132 const G4PhysicsVector* G4NeutronCaptureXS::GetPhysicsVector(G4int Z)
133 {
134 const G4PhysicsVector* pv = data->GetElementData(Z);
135 if(pv == nullptr) {
136 InitialiseOnFly(Z);
137 pv = data->GetElementData(Z);
138 }
139 return pv;
140 }
141
142 #endif
143