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G4BraggModel.hh
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26 // $Id$
27 //
28 // -------------------------------------------------------------------
29 //
30 // GEANT4 Class header file
31 //
32 //
33 // File name: G4BraggModel
34 //
35 // Author: Vladimir Ivanchenko
36 //
37 // Creation date: 03.01.2002
38 //
39 // Modifications:
40 // 23-12-02 V.Ivanchenko change interface in order to moveto cut per region
41 // 24-01-03 Make models region aware (V.Ivanchenko)
42 // 13-02-03 Add name (V.Ivanchenko)
43 // 12-11-03 Fix for GenericIons (V.Ivanchenko)
44 // 11-04-05 Major optimisation of internal interfaces (V.Ivantchenko)
45 // 15-02-06 ComputeCrossSectionPerElectron, ComputeCrossSectionPerAtom (mma)
46 // 25-04-06 Added stopping data from PSTAR (V.Ivanchenko)
47 // 12-08-08 Added methods GetParticleCharge, GetChargeSquareRatio,
48 // CorrectionsAlongStep needed for ions(V.Ivanchenko)
49 
50 //
51 // Class Description:
52 //
53 // Implementation of energy loss and delta-electron production
54 // by heavy slow charged particles using ICRU'49 and NIST evaluated data
55 // for protons
56 
57 // -------------------------------------------------------------------
58 //
59 
60 #ifndef G4BraggModel_h
61 #define G4BraggModel_h 1
62 
64 
65 #include "G4VEmModel.hh"
66 #include "G4PSTARStopping.hh"
67 
69 class G4EmCorrections;
70 
71 class G4BraggModel : public G4VEmModel
72 {
73 
74 public:
75 
77  const G4String& nam = "Bragg");
78 
79  virtual ~G4BraggModel();
80 
81  virtual void Initialise(const G4ParticleDefinition*, const G4DataVector&);
82 
84  const G4ParticleDefinition*,
85  G4double kineticEnergy,
86  G4double cutEnergy,
87  G4double maxEnergy);
88 
90  const G4ParticleDefinition*,
91  G4double kineticEnergy,
92  G4double Z, G4double A,
93  G4double cutEnergy,
94  G4double maxEnergy);
95 
97  const G4ParticleDefinition*,
98  G4double kineticEnergy,
99  G4double cutEnergy,
100  G4double maxEnergy);
101 
103  const G4ParticleDefinition*,
104  G4double kineticEnergy,
105  G4double cutEnergy);
106 
107  virtual void SampleSecondaries(std::vector<G4DynamicParticle*>*,
108  const G4MaterialCutsCouple*,
109  const G4DynamicParticle*,
110  G4double tmin,
111  G4double maxEnergy);
112 
113  // Compute ion charge
115  const G4Material*,
116  G4double kineticEnergy);
117 
119  const G4Material* mat,
120  G4double kineticEnergy);
121 
122 protected:
123 
125  G4double kinEnergy);
126 
127  inline G4double GetChargeSquareRatio() const;
128 
129  inline void SetChargeSquareRatio(G4double val);
130 
131 private:
132 
133  inline void SetParticle(const G4ParticleDefinition* p);
134 
135  G4bool HasMaterial(const G4Material* material);
136 
137  G4double StoppingPower(const G4Material* material,
138  G4double kineticEnergy);
139 
140  G4double ElectronicStoppingPower(G4double z,
141  G4double kineticEnergy) const;
142 
143  G4double DEDX(const G4Material* material, G4double kineticEnergy);
144 
145  G4bool MolecIsInZiegler1988(const G4Material* material);
146 
147  G4double ChemicalFactor(G4double kineticEnergy, G4double eloss125) const;
148 
149  void SetExpStopPower125(G4double value) {expStopPower125 = value;};
150 
151  // hide assignment operator
152  G4BraggModel & operator=(const G4BraggModel &right);
153  G4BraggModel(const G4BraggModel&);
154 
155 
156  G4EmCorrections* corr;
157 
158  const G4ParticleDefinition* particle;
159  G4ParticleDefinition* theElectron;
160  G4ParticleChangeForLoss* fParticleChange;
161  G4PSTARStopping pstar;
162 
163  const G4Material* currentMaterial;
164 
165  G4double mass;
166  G4double spin;
167  G4double chargeSquare;
168  G4double massRate;
169  G4double ratio;
170  G4double lowestKinEnergy;
171  G4double protonMassAMU;
172  G4double theZieglerFactor;
173  G4double expStopPower125; // Experimental Stopping power at 125keV
174 
175  G4int iMolecula; // index in the molecula's table
176  G4int iPSTAR; // index in PSTAR
177  G4bool isIon;
178  G4bool isInitialised;
179 };
180 
181 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
182 
183 inline void G4BraggModel::SetParticle(const G4ParticleDefinition* p)
184 {
185  particle = p;
186  mass = particle->GetPDGMass();
187  spin = particle->GetPDGSpin();
188  G4double q = particle->GetPDGCharge()/CLHEP::eplus;
189  chargeSquare = q*q;
190  massRate = mass/CLHEP::proton_mass_c2;
191  ratio = CLHEP::electron_mass_c2/mass;
192 }
193 
195 {
196  return chargeSquare;
197 }
198 
200 {
201  chargeSquare = val;
202 }
203 
204 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
205 
206 #endif