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G4LindhardSorensenIonModel.hh
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27 // -------------------------------------------------------------------
28 //
29 // GEANT4 Class header file
30 //
31 //
32 // File name: G4LindhardSorensenIonModel
33 //
34 // Author: Alexander Bagulya & Vladimir Ivanchenko
35 //
36 // Creation date: 16.04.2018
37 //
38 //
39 // Class Description:
40 //
41 // Implementation of ion ionisation energy loss and delta-electron
42 // production by heavy charged particles according to
43 // J. Lindhard & A.H. Sorensen, Phys. Rev. A 53 (1996) 2443-2455
44 
45 // -------------------------------------------------------------------
46 //
47 
48 #ifndef G4LindhardSorensenIonModel_h
49 #define G4LindhardSorensenIonModel_h 1
50 
51 #include <CLHEP/Units/SystemOfUnits.h>
52 
53 #include "G4VEmModel.hh"
54 #include "G4NistManager.hh"
55 
56 class G4EmCorrections;
57 class G4ParticleChangeForLoss;
58 class G4LindhardSorensenData;
59 
60 class G4LindhardSorensenIonModel : public G4VEmModel
61 {
62 
63 public:
64 
65  explicit G4LindhardSorensenIonModel(const G4ParticleDefinition* p = nullptr,
66  const G4String& nam = "LindhardSorensen");
67 
68  virtual ~G4LindhardSorensenIonModel();
69 
70  virtual void Initialise(const G4ParticleDefinition*,
71  const G4DataVector&) override;
72 
73  virtual G4double MinEnergyCut(const G4ParticleDefinition*,
74  const G4MaterialCutsCouple* couple) override;
75 
76  virtual G4double ComputeCrossSectionPerElectron(
77  const G4ParticleDefinition*,
78  G4double kineticEnergy,
79  G4double cutEnergy,
80  G4double maxEnergy);
81 
82  virtual G4double ComputeCrossSectionPerAtom(
83  const G4ParticleDefinition*,
84  G4double kineticEnergy,
85  G4double Z, G4double A,
86  G4double cutEnergy,
87  G4double maxEnergy) override;
88 
89  virtual G4double CrossSectionPerVolume(const G4Material*,
90  const G4ParticleDefinition*,
91  G4double kineticEnergy,
92  G4double cutEnergy,
93  G4double maxEnergy) override;
94 
95  virtual G4double ComputeDEDXPerVolume(const G4Material*,
96  const G4ParticleDefinition*,
97  G4double kineticEnergy,
98  G4double cutEnergy) override;
99 
100  virtual G4double GetChargeSquareRatio(const G4ParticleDefinition* p,
101  const G4Material* mat,
102  G4double kineticEnergy) override;
103 
104  virtual G4double GetParticleCharge(const G4ParticleDefinition* p,
105  const G4Material* mat,
106  G4double kineticEnergy) override;
107 
108  virtual void CorrectionsAlongStep(const G4MaterialCutsCouple* couple,
109  const G4DynamicParticle* dp,
110  G4double& eloss,
111  G4double&,
112  G4double length) override;
113 
114  virtual void SampleSecondaries(std::vector<G4DynamicParticle*>*,
115  const G4MaterialCutsCouple*,
116  const G4DynamicParticle*,
117  G4double tmin,
118  G4double maxEnergy) override;
119 
120 protected:
121 
122  virtual G4double MaxSecondaryEnergy(const G4ParticleDefinition*,
123  G4double kinEnergy) override;
124 
125  inline G4double GetChargeSquareRatio() const;
126 
127  inline void SetChargeSquareRatio(G4double val);
128 
129 private:
130 
131  void SetupParameters();
132 
133  inline void SetParticle(const G4ParticleDefinition* p);
134 
135  // hide assignment operator
136  G4LindhardSorensenIonModel & operator=
137  (const G4LindhardSorensenIonModel &right) = delete;
138  G4LindhardSorensenIonModel(const G4LindhardSorensenIonModel&) = delete;
139 
140  static G4LindhardSorensenData* lsdata;
141 
142  const G4ParticleDefinition* particle;
143  G4ParticleDefinition* theElectron;
144  G4EmCorrections* corr;
145  G4ParticleChangeForLoss* fParticleChange;
146  G4NistManager* nist;
147 
148  G4int Zin;
149  G4double mass;
150  G4double tlimit;
151  G4double spin;
152  G4double magMoment2;
153  G4double chargeSquare;
154  G4double charge;
155  G4double ratio;
156  G4double formfact;
157  G4double twoln10;
158 };
159 
160 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
161 
162 inline void
163 G4LindhardSorensenIonModel::SetParticle(const G4ParticleDefinition* p)
164 {
165  if(particle != p) {
166  particle = p;
167  SetupParameters();
168  }
169 }
170 
171 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
172 
173 inline G4double G4LindhardSorensenIonModel::GetChargeSquareRatio() const
174 {
175  return chargeSquare;
176 }
177 
178 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
179 
180 inline void G4LindhardSorensenIonModel::SetChargeSquareRatio(G4double val)
181 {
182  chargeSquare = val;
183 }
184 
185 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
186 
187 #endif