source: trunk/source/processes/electromagnetic/muons/include/G4MuBremsstrahlungModel.hh

Last change on this file was 1337, checked in by garnier, 14 years ago

tag geant4.9.4 beta 1 + modifs locales
File size: 5.7 KB
Line 
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25//
26// $Id: G4MuBremsstrahlungModel.hh,v 1.22 2009/02/20 14:48:16 vnivanch Exp $
27// GEANT4 tag $Name: geant4-09-04-beta-01 $
28//
29// -------------------------------------------------------------------
30//
31// GEANT4 Class header file
32//
33//
34// File name:     G4MuBremsstrahlungModel
35//
36// Author:        Vladimir Ivanchenko on base of Laszlo Urban code
37//
38// Creation date: 18.05.2002
39//
40// Modifications:
41//
42// 23-12-02 Change interface in order to move to cut per region (V.Ivanchenko)
43// 27-01-03 Make models region aware (V.Ivanchenko)
44// 13-02-03 Add name (V.Ivanchenko)
45// 10-02-04 Add lowestKinEnergy (V.Ivanchenko)
46// 08-04-05 Major optimisation of internal interfaces (V.Ivantchenko)
47// 13-02-06 Add ComputeCrossSectionPerAtom (mma)
48// 11-10-07 Add ignoreCut flag (V.Ivanchenko)
49// 28-02-08 Reorganized protected methods and members (V.Ivanchenko)
50// 06-03-08 Remove obsolete methods and members (V.Ivanchenko)
51//
52
53//
54// Class Description:
55//
56// Implementation of bremssrahlung by muons
57
58// -------------------------------------------------------------------
59//
60
61#ifndef G4MuBremsstrahlungModel_h
62#define G4MuBremsstrahlungModel_h 1
63
64#include "G4VEmModel.hh"
65#include "G4NistManager.hh"
66
67class G4Element;
68class G4ParticleChangeForLoss;
69
70class G4MuBremsstrahlungModel : public G4VEmModel
71{
72
73public:
74
75  G4MuBremsstrahlungModel(const G4ParticleDefinition* p = 0,
76                          const G4String& nam = "MuBrem");
77
78  virtual ~G4MuBremsstrahlungModel();
79
80  virtual void Initialise(const G4ParticleDefinition*, const G4DataVector&);
81
82  virtual G4double MinEnergyCut(const G4ParticleDefinition*,
83                                const G4MaterialCutsCouple*);
84                             
85  virtual G4double ComputeCrossSectionPerAtom(
86                                 const G4ParticleDefinition*,
87                                 G4double kineticEnergy,
88                                 G4double Z, G4double A,
89                                 G4double cutEnergy,
90                                 G4double maxEnergy);
91                                                               
92  virtual G4double ComputeDEDXPerVolume(const G4Material*,
93                                const G4ParticleDefinition*,
94                                G4double kineticEnergy,
95                                G4double cutEnergy);
96                             
97  virtual void SampleSecondaries(std::vector<G4DynamicParticle*>*,
98                                 const G4MaterialCutsCouple*,
99                                 const G4DynamicParticle*,
100                                 G4double tmin,
101                                 G4double maxEnergy);
102
103  inline void SetLowestKineticEnergy(G4double e);
104
105protected:
106
107  G4double ComputMuBremLoss(G4double Z, G4double tkin, G4double cut);
108 
109  G4double ComputeMicroscopicCrossSection(G4double tkin,
110                                          G4double Z,
111                                          G4double cut);
112
113  virtual G4double ComputeDMicroscopicCrossSection(G4double tkin,
114                                                   G4double Z,
115                                                   G4double gammaEnergy);
116
117  inline void SetParticle(const G4ParticleDefinition*);
118
119private:
120
121  G4DataVector* ComputePartialSumSigma(const G4Material* material,
122                                       G4double tkin, G4double cut);
123
124  const G4Element* SelectRandomAtom(const G4MaterialCutsCouple* couple) const;
125
126  // hide assignment operator
127  G4MuBremsstrahlungModel & operator=(const  G4MuBremsstrahlungModel &right);
128  G4MuBremsstrahlungModel(const  G4MuBremsstrahlungModel&);
129
130protected:
131
132  const G4ParticleDefinition* particle;
133  G4NistManager* nist;
134  G4double mass;
135  G4double rmass;
136  G4double cc;
137  G4double coeff;
138  G4double sqrte;
139  G4double bh;
140  G4double bh1;
141  G4double btf;
142  G4double btf1;
143
144private:
145
146  G4ParticleDefinition*       theGamma;
147  G4ParticleChangeForLoss*    fParticleChange;
148
149  G4double highKinEnergy;
150  G4double lowKinEnergy;
151  G4double lowestKinEnergy;
152  G4double minThreshold;
153
154  std::vector<G4DataVector*> partialSumSigma;
155};
156
157//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
158
159inline void G4MuBremsstrahlungModel::SetLowestKineticEnergy(G4double e) 
160{
161  lowestKinEnergy = e;
162}
163
164//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
165
166inline
167void G4MuBremsstrahlungModel::SetParticle(const G4ParticleDefinition* p)
168{
169  if(!particle) {
170    particle = p;
171    mass = particle->GetPDGMass();
172    rmass=mass/electron_mass_c2 ;
173    cc=classic_electr_radius/rmass ;
174    coeff= 16.*fine_structure_const*cc*cc/3. ;
175  }
176}
177
178//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
179
180#endif
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