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25 //
26 // G4eSingleCoulombScatteringModel.hh
27 // -------------------------------------------------------------------
28 //
29 // GEANT4 Class header file
30 //
31 // File name: G4eSingleCoulombScatteringModel
32 //
33 // Author: Cristina Consolandi
34 //
35 // Creation date: 20.10.2011
36 //
37 // Class Description:
38 // Single Scattering model for electron-nuclei interaction.
39 // Suitable for high energy electrons and low scattering angles.
40 //
41 // Reference:
42 // M.J. Boschini et al.
43 // "Non Ionizing Energy Loss induced by Electrons in the Space Environment"
44 // Proc. of the 13th International Conference on Particle Physics and Advanced Technology
45 // (13th ICPPAT, Como 3-7/10/2011), World Scientific (Singapore).
46 // Available at: http://arxiv.org/abs/1111.4042v4
47 //
48 //
49 // -------------------------------------------------------------------
50 //
51
52 #ifndef G4eSingleCoulombScatteringModel_h
53 #define G4eSingleCoulombScatteringModel_h 1
54
55 #include "G4VEmModel.hh"
56 #include "globals.hh"
57 #include "G4ScreeningMottCrossSection.hh"
58
59 #include <vector>
60
61 class G4ParticleChangeForGamma;
62 class G4ParticleDefinition;
63 class G4IonTable;
64 class G4Nistmanager;
65
66 class G4eSingleCoulombScatteringModel : public G4VEmModel
67 {
68
69 public:
70
71 explicit G4eSingleCoulombScatteringModel(const G4String& nam = "eSingleCoulombScat");
72
73 ~G4eSingleCoulombScatteringModel() override;
74
75 void Initialise(const G4ParticleDefinition*, const G4DataVector&) final;
76
77 void InitialiseLocal(const G4ParticleDefinition*,
78 G4VEmModel* masterModel) final;
79
80 G4double ComputeCrossSectionPerAtom(
81 const G4ParticleDefinition*,
82 G4double kinEnergy,
83 G4double Z,
84 G4double A,
85 G4double cut,
86 G4double emax) final;
87
88 void SampleSecondaries(std::vector<G4DynamicParticle*>*,
89 const G4MaterialCutsCouple*,
90 const G4DynamicParticle*,
91 G4double tmin,
92 G4double maxEnergy) final;
93
94 inline void SetRecoilThreshold(G4double eth);
95
96 void SetXSectionModel(const G4String& model);
97
98 // hide assignment operator
99 G4eSingleCoulombScatteringModel & operator=
100 (const G4eSingleCoulombScatteringModel &right) = delete;
101 G4eSingleCoulombScatteringModel(const G4eSingleCoulombScatteringModel&) = delete;
102
103 private:
104
105 inline void DefineMaterial(const G4MaterialCutsCouple*);
106 inline void SetupParticle(const G4ParticleDefinition*);
107
108 G4IonTable* theIonTable;
109 G4ParticleChangeForGamma* fParticleChange;
110 G4NistManager* fNistManager;
111 G4ScreeningMottCrossSection* Mottcross;
112 const G4ParticleDefinition* particle;
113
114 const std::vector<G4double>* pCuts;
115 const G4MaterialCutsCouple* currentCouple;
116 const G4Material* currentMaterial;
117 const G4Element* currentElement;
118
119 G4int currentMaterialIndex;
120 G4int FormFactor;
121 G4int XSectionModel;
122
123 G4double cosThetaMin;
124 G4double recoilThreshold;
125 G4double mass;
126 G4double lowEnergyLimit;
127
128 };
129
130 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
131
132 inline void
133 G4eSingleCoulombScatteringModel::DefineMaterial(const G4MaterialCutsCouple* cup)
134 {
135 if(cup != currentCouple) {
136 currentCouple = cup;
137 currentMaterial = cup->GetMaterial();
138 currentMaterialIndex = currentCouple->GetIndex();
139 }
140 }
141
142 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
143
144 inline void
145 G4eSingleCoulombScatteringModel::SetupParticle(const G4ParticleDefinition* p)
146 {
147 if(p != particle) {
148 particle = p;
149 mass = particle->GetPDGMass();
150 Mottcross->SetupParticle(p);
151 }
152 }
153 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
154
155 inline void G4eSingleCoulombScatteringModel::SetRecoilThreshold(G4double eth)
156 {
157 recoilThreshold = eth;
158 }
159
160 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
161
162 #endif
163