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25 //
26 //
27 // -------------------------------------------
28 //
29 // GEANT4 Class header file
30 //
31 //
32 // File name: G4ICRU73QOModel
33 //
34 // Author: Alexander Bagulya
35 //
36 // Creation date: 21.05.2010
37 //
38 // Modifications:
39 //
40 //
41 // Class Description:
42 //
43 // Quantum Harmonic Oscillator Model for energ
44 // structure of atoms taking into account Q^2
45 // Q^3 and Q^4 terms for computation of energy
46 // Can be applied on heavy negatively charged
47 // 10 keV - 10 MeV scaled to the proton mass.
48 //
49 // Used data and formula of
50 // 1. G4QAOLowEnergyLoss class, S.Chauvie, P.N
51 // Nucl. Sci. 54 (2007) 578.
52 // 2. ShellStrength and ShellEnergy from ICRU'
53 // 3. Data for Ta (Z=73) from P.Sigmund, A.Shi
54 // 165-172
55 //
56 // -------------------------------------------
57 //
58
59 #ifndef G4ICRU73QOModel_h
60 #define G4ICRU73QOModel_h 1
61
62 #include <CLHEP/Units/PhysicalConstants.h>
63
64 #include "G4VEmModel.hh"
65 #include "G4AtomicShells.hh"
66 #include "G4DensityEffectData.hh"
67
68 class G4ParticleChangeForLoss;
69
70 class G4ICRU73QOModel : public G4VEmModel
71 {
72
73 public:
74
75 explicit G4ICRU73QOModel(const G4ParticleDef
76 const G4String& nam
77
78 ~G4ICRU73QOModel() = default;
79
80 void Initialise(const G4ParticleDefinition*,
81
82 G4double ComputeCrossSectionPerElectron(
83 const G4Parti
84 G4double kine
85 G4double cutE
86 G4double maxE
87
88 G4double ComputeCrossSectionPerAtom(
89 const G4Parti
90 G4double kine
91 G4double Z, G
92 G4double cutE
93 G4double maxE
94
95 G4double CrossSectionPerVolume(const G4Mater
96 const G4Parti
97 G4double kine
98 G4double cutE
99 G4double maxE
100
101 G4double ComputeDEDXPerVolume(const G4Materi
102 const G4ParticleDefinition*,
103 G4double kineticEnergy,
104 G4double) override;
105
106 void SampleSecondaries(std::vector<G4Dynamic
107 const G4MaterialCutsCouple*,
108 const G4DynamicParticle*,
109 G4double tmin,
110 G4double maxEnergy) override;
111
112 // add correction to energy loss and compute
113 void CorrectionsAlongStep(const G4MaterialCu
114 const G4DynamicParticle*,
115 const G4double& length,
116 G4double& eloss) override;
117
118 // hide assignment operator
119 G4ICRU73QOModel & operator=(const G4ICRU73Q
120 G4ICRU73QOModel(const G4ICRU73QOModel&) = d
121
122 protected:
123
124 G4double MaxSecondaryEnergy(const G4Particle
125 G4double kinEnergy) final;
126
127 private:
128
129 inline void SetParticle(const G4ParticleDefi
130 inline void SetLowestKinEnergy(G4double val)
131
132 G4double DEDX(const G4Material* material, G4
133
134 G4double DEDXPerElement(G4int Z, G4double ki
135
136 // get number of shell, energy and oscillato
137 G4int GetNumberOfShells(G4int Z) const;
138
139 G4double GetShellEnergy(G4int Z, G4int nbOfT
140 G4double GetOscillatorEnergy(G4int Z, G4int
141 G4double GetShellStrength(G4int Z, G4int nbO
142
143 // calculate stopping number for L's term
144 G4double GetL0(G4double normEnergy) const;
145 // terms in Z^2
146 G4double GetL1(G4double normEnergy) const;
147 // terms in Z^3
148 G4double GetL2(G4double normEnergy) const;
149 // terms in Z^4
150
151 const G4ParticleDefinition* particle;
152 G4ParticleDefinition* theElectron;
153 G4ParticleChangeForLoss* fParticleChange;
154 G4DensityEffectData* denEffData;
155
156 G4double mass;
157 G4double charge;
158 G4double chargeSquare;
159 G4double massRate;
160 G4double ratio;
161 G4double lowestKinEnergy;
162
163 G4bool isInitialised;
164
165 // Z of element at now avaliable for the mod
166 static const G4int NQOELEM = 26;
167 static const G4int NQODATA = 130;
168 static const G4int ZElementAvailable[NQOELEM
169
170 // number, energy and oscillator strengths
171 // for an harmonic oscillator model of mater
172 static const G4int startElemIndex[NQOELEM];
173 static const G4int nbofShellsForElement[NQOE
174 static const G4double ShellEnergy[NQODATA];
175 static const G4double SubShellOccupation[NQO
176
177 G4int indexZ[100];
178
179 // variable for calculation of stopping num
180 static const G4double L0[67][2];
181 static const G4double L1[22][2];
182 static const G4double L2[14][2];
183
184 G4int sizeL0;
185 G4int sizeL1;
186 G4int sizeL2;
187
188 static const G4double factorBethe[99];
189
190 };
191
192 //....oooOO0OOooo........oooOO0OOooo........oo
193
194 inline void G4ICRU73QOModel::SetParticle(const
195 {
196 particle = p;
197 mass = particle->GetPDGMass();
198 charge = particle->GetPDGCharge()/CLHEP::epl
199 chargeSquare = charge*charge;
200 massRate = mass/CLHEP::proton_mass_c2;
201 ratio = CLHEP::electron_mass_c2/mass;
202 }
203
204 //....oooOO0OOooo........oooOO0OOooo........oo
205
206 inline void G4ICRU73QOModel::SetLowestKinEnerg
207 {
208 lowestKinEnergy = val;
209 }
210
211 #endif
212