1 | // |
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2 | // ******************************************************************** |
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3 | // * License and Disclaimer * |
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4 | // * * |
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5 | // * The Geant4 software is copyright of the Copyright Holders of * |
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6 | // * the Geant4 Collaboration. It is provided under the terms and * |
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7 | // * conditions of the Geant4 Software License, included in the file * |
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8 | // * LICENSE and available at http://cern.ch/geant4/license . These * |
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9 | // * include a list of copyright holders. * |
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10 | // * * |
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11 | // * Neither the authors of this software system, nor their employing * |
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12 | // * institutes,nor the agencies providing financial support for this * |
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13 | // * work make any representation or warranty, express or implied, * |
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14 | // * regarding this software system or assume any liability for its * |
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15 | // * use. Please see the license in the file LICENSE and URL above * |
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16 | // * for the full disclaimer and the limitation of liability. * |
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17 | // * * |
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18 | // * This code implementation is the result of the scientific and * |
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19 | // * technical work of the GEANT4 collaboration. * |
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20 | // * By using, copying, modifying or distributing the software (or * |
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21 | // * any work based on the software) you agree to acknowledge its * |
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22 | // * use in resulting scientific publications, and indicate your * |
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23 | // * acceptance of all terms of the Geant4 Software license. * |
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24 | // ******************************************************************** |
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25 | // |
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26 | // |
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27 | // ------------------------------------------------------------------- |
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28 | // |
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29 | // GEANT4 Class header file |
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30 | // |
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31 | // |
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32 | // File name: G4PAIModel |
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33 | // |
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34 | // Author: V. Grichine based on Vladimir Ivanchenko code |
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35 | // |
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36 | // Creation date: 05.10.2003 |
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37 | // |
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38 | // Modifications: |
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39 | // 08-04-05 Major optimisation of internal interfaces (V.Ivantchenko) |
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40 | // 26-09-07 Fixed tmax computation (V.Ivantchenko) |
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41 | // |
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42 | // |
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43 | // Class Description: |
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44 | // |
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45 | // Implementation of PAI model of energy loss and |
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46 | // delta-electron production by heavy charged particles |
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47 | |
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48 | // ------------------------------------------------------------------- |
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49 | // |
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50 | |
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51 | #ifndef G4PAIModel_h |
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52 | #define G4PAIModel_h 1 |
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53 | |
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54 | #include <vector> |
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55 | #include "G4VEmModel.hh" |
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56 | #include "globals.hh" |
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57 | #include "G4VEmFluctuationModel.hh" |
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58 | #include "G4PAIySection.hh" |
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59 | |
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60 | class G4PhysicsLogVector; |
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61 | class G4PhysicsTable; |
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62 | class G4Region; |
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63 | class G4MaterialCutsCouple; |
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64 | class G4ParticleChangeForLoss; |
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65 | |
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66 | class G4PAIModel : public G4VEmModel, public G4VEmFluctuationModel |
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67 | { |
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68 | |
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69 | public: |
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70 | |
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71 | G4PAIModel(const G4ParticleDefinition* p = 0, const G4String& nam = "PAI"); |
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72 | |
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73 | virtual ~G4PAIModel(); |
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74 | |
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75 | virtual void Initialise(const G4ParticleDefinition*, const G4DataVector&); |
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76 | |
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77 | virtual void InitialiseMe(const G4ParticleDefinition*) {}; |
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78 | |
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79 | virtual G4double ComputeDEDX(const G4MaterialCutsCouple*, |
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80 | const G4ParticleDefinition*, |
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81 | G4double kineticEnergy, |
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82 | G4double cutEnergy); |
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83 | |
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84 | virtual G4double CrossSection(const G4MaterialCutsCouple*, |
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85 | const G4ParticleDefinition*, |
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86 | G4double kineticEnergy, |
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87 | G4double cutEnergy, |
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88 | G4double maxEnergy); |
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89 | |
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90 | virtual void SampleSecondaries(std::vector<G4DynamicParticle*>*, |
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91 | const G4MaterialCutsCouple*, |
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92 | const G4DynamicParticle*, |
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93 | G4double tmin, |
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94 | G4double maxEnergy); |
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95 | |
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96 | virtual G4double SampleFluctuations(const G4Material*, |
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97 | const G4DynamicParticle*, |
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98 | G4double&, |
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99 | G4double&, |
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100 | G4double&); |
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101 | |
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102 | virtual G4double Dispersion( const G4Material*, |
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103 | const G4DynamicParticle*, |
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104 | G4double&, |
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105 | G4double&); |
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106 | |
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107 | void DefineForRegion(const G4Region* r) ; |
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108 | void ComputeSandiaPhotoAbsCof(); |
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109 | void BuildPAIonisationTable(); |
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110 | void BuildLambdaVector(); |
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111 | |
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112 | G4double GetdNdxCut( G4int iPlace, G4double transferCut); |
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113 | G4double GetdEdxCut( G4int iPlace, G4double transferCut); |
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114 | G4double GetPostStepTransfer( G4double scaledTkin ); |
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115 | G4double GetEnergyTransfer( G4int iPlace, |
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116 | G4double position, |
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117 | G4int iTransfer ); |
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118 | |
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119 | void SetVerboseLevel(G4int verbose){fVerbose=verbose;}; |
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120 | |
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121 | |
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122 | |
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123 | protected: |
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124 | |
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125 | G4double MaxSecondaryEnergy(const G4ParticleDefinition*, |
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126 | G4double kinEnergy); |
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127 | |
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128 | private: |
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129 | |
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130 | void SetParticle(const G4ParticleDefinition* p); |
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131 | |
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132 | // hide assignment operator |
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133 | G4PAIModel & operator=(const G4PAIModel &right); |
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134 | G4PAIModel(const G4PAIModel&); |
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135 | |
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136 | // The vector over proton kinetic energies: the range of gammas |
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137 | G4int fVerbose; |
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138 | G4double fLowestGamma; |
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139 | G4double fHighestGamma; |
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140 | G4double fLowestKineticEnergy; |
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141 | G4double fHighestKineticEnergy; |
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142 | G4int fTotBin; |
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143 | G4int fMeanNumber; |
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144 | G4PhysicsLogVector* fParticleEnergyVector ; |
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145 | G4PAIySection fPAIySection; |
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146 | |
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147 | // vectors |
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148 | |
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149 | G4PhysicsTable* fPAItransferTable; |
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150 | std::vector<G4PhysicsTable*> fPAIxscBank; |
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151 | |
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152 | G4PhysicsTable* fPAIdEdxTable; |
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153 | std::vector<G4PhysicsTable*> fPAIdEdxBank; |
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154 | |
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155 | std::vector<const G4MaterialCutsCouple*> fMaterialCutsCoupleVector; |
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156 | std::vector<const G4Region*> fPAIRegionVector; |
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157 | |
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158 | const G4MaterialCutsCouple* fCutCouple; |
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159 | const G4Material* fMaterial; |
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160 | G4double fDeltaCutInKinEnergy; |
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161 | |
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162 | size_t fMatIndex ; |
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163 | G4double** fSandiaPhotoAbsCof ; |
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164 | G4int fSandiaIntervalNumber ; |
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165 | |
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166 | G4PhysicsLogVector* fdEdxVector ; |
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167 | std::vector<G4PhysicsLogVector*> fdEdxTable ; |
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168 | |
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169 | G4PhysicsLogVector* fLambdaVector ; |
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170 | std::vector<G4PhysicsLogVector*> fLambdaTable ; |
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171 | |
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172 | G4PhysicsLogVector* fdNdxCutVector ; |
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173 | std::vector<G4PhysicsLogVector*> fdNdxCutTable ; |
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174 | |
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175 | const G4ParticleDefinition* fParticle; |
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176 | const G4ParticleDefinition* fElectron; |
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177 | const G4ParticleDefinition* fPositron; |
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178 | G4ParticleChangeForLoss* fParticleChange; |
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179 | |
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180 | G4double fMass; |
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181 | G4double fSpin; |
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182 | G4double fChargeSquare; |
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183 | G4double fRatio; |
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184 | G4double fHighKinEnergy; |
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185 | G4double fLowKinEnergy; |
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186 | G4double fTwoln10; |
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187 | G4double fBg2lim; |
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188 | G4double fTaulim; |
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189 | G4double fQc; |
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190 | |
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191 | G4bool isInitialised; |
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192 | }; |
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193 | |
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194 | ///////////////////////////////////////////////////////////////////// |
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195 | |
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196 | inline G4double G4PAIModel::MaxSecondaryEnergy( const G4ParticleDefinition* p, |
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197 | G4double kinEnergy) |
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198 | { |
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199 | G4double tmax = kinEnergy; |
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200 | if(p == fElectron) tmax *= 0.5; |
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201 | else if(p != fPositron) { |
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202 | G4double mass = p->GetPDGMass(); |
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203 | G4double ratio= electron_mass_c2/mass; |
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204 | G4double gamma= kinEnergy/mass + 1.0; |
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205 | tmax = 2.0*electron_mass_c2*(gamma*gamma - 1.) / |
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206 | (1. + 2.0*gamma*ratio + ratio*ratio); |
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207 | } |
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208 | return tmax; |
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209 | } |
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210 | |
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211 | /////////////////////////////////////////////////////////////// |
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212 | |
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213 | inline void G4PAIModel::DefineForRegion(const G4Region* r) |
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214 | { |
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215 | fPAIRegionVector.push_back(r); |
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216 | } |
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217 | |
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218 | #endif |
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219 | |
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220 | |
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221 | |
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222 | |
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223 | |
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224 | |
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225 | |
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