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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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 | // $Id: G4VEmModel.hh,v 1.48 2007/10/29 08:38:58 vnivanch Exp $ |
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27 | // GEANT4 tag $Name: geant4-09-01-patch-02 $ |
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28 | // |
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29 | // ------------------------------------------------------------------- |
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30 | // |
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31 | // GEANT4 Class header file |
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32 | // |
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33 | // |
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34 | // File name: G4VEmModel |
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35 | // |
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36 | // Author: Vladimir Ivanchenko |
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37 | // |
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38 | // Creation date: 03.01.2002 |
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39 | // |
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40 | // Modifications: |
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41 | // |
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42 | // 23-12-02 V.Ivanchenko change interface before move to cut per region |
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43 | // 24-01-03 Cut per region (V.Ivanchenko) |
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44 | // 13-02-03 Add name (V.Ivanchenko) |
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45 | // 25-02-03 Add sample theta and displacement (V.Ivanchenko) |
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46 | // 23-07-03 Replace G4Material by G4MaterialCutCouple in dE/dx and CrossSection |
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47 | // calculation (V.Ivanchenko) |
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48 | // 01-03-04 L.Urban signature changed in SampleCosineTheta |
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49 | // 23-04-04 L.urban signature of SampleCosineTheta changed back |
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50 | // 17-11-04 Add method CrossSectionPerAtom (V.Ivanchenko) |
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51 | // 14-03-05 Reduce number of pure virtual methods and make inline part |
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52 | // separate (V.Ivanchenko) |
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53 | // 24-03-05 Remove IsInCharge and add G4VParticleChange in the constructor (VI) |
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54 | // 08-04-05 Major optimisation of internal interfaces (V.Ivantchenko) |
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55 | // 15-04-05 optimize internal interface for msc (V.Ivanchenko) |
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56 | // 08-05-05 A -> N (V.Ivanchenko) |
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57 | // 25-07-05 Move constructor and destructor to the body (V.Ivanchenko) |
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58 | // 02-02-06 ComputeCrossSectionPerAtom: default value A=0. (mma) |
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59 | // 06-02-06 add method ComputeMeanFreePath() (mma) |
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60 | // 07-03-06 Optimize msc methods (V.Ivanchenko) |
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61 | // 29-06-06 Add member currentElement and Get/Set methods (V.Ivanchenko) |
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62 | // 29-10-07 Added SampleScattering (V.Ivanchenko) |
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63 | // |
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64 | // Class Description: |
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65 | // |
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66 | // Abstract interface to energy loss models |
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67 | |
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68 | // ------------------------------------------------------------------- |
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69 | // |
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70 | |
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71 | #ifndef G4VEmModel_h |
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72 | #define G4VEmModel_h 1 |
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73 | |
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74 | #include "globals.hh" |
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75 | #include "G4DynamicParticle.hh" |
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76 | #include "G4ParticleDefinition.hh" |
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77 | #include "G4MaterialCutsCouple.hh" |
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78 | #include "G4Material.hh" |
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79 | #include "G4Element.hh" |
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80 | #include "G4ElementVector.hh" |
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81 | #include "G4DataVector.hh" |
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82 | #include "G4VEmFluctuationModel.hh" |
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83 | #include "Randomize.hh" |
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84 | |
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85 | class G4PhysicsTable; |
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86 | class G4Region; |
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87 | class G4VParticleChange; |
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88 | class G4Track; |
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89 | |
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90 | class G4VEmModel |
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91 | { |
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92 | |
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93 | public: |
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94 | |
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95 | G4VEmModel(const G4String& nam); |
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96 | |
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97 | virtual ~G4VEmModel(); |
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98 | |
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99 | //------------------------------------------------------------------------ |
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100 | // Virtual methods to be implemented for the concrete model |
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101 | //------------------------------------------------------------------------ |
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102 | |
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103 | virtual void Initialise(const G4ParticleDefinition*, const G4DataVector&) = 0; |
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104 | |
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105 | |
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106 | virtual void SampleSecondaries(std::vector<G4DynamicParticle*>*, |
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107 | const G4MaterialCutsCouple*, |
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108 | const G4DynamicParticle*, |
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109 | G4double tmin = 0.0, |
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110 | G4double tmax = DBL_MAX) = 0; |
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111 | |
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112 | //------------------------------------------------------------------------ |
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113 | // Methods with standard implementation; may be overwritten if needed |
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114 | //------------------------------------------------------------------------ |
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115 | |
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116 | virtual G4double MinEnergyCut(const G4ParticleDefinition*, |
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117 | const G4MaterialCutsCouple*); |
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118 | |
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119 | virtual G4double ComputeDEDX(const G4MaterialCutsCouple*, |
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120 | const G4ParticleDefinition*, |
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121 | G4double kineticEnergy, |
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122 | G4double cutEnergy = DBL_MAX); |
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123 | |
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124 | virtual G4double CrossSection(const G4MaterialCutsCouple*, |
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125 | const G4ParticleDefinition*, |
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126 | G4double kineticEnergy, |
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127 | G4double cutEnergy = 0.0, |
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128 | G4double maxEnergy = DBL_MAX); |
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129 | |
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130 | virtual G4double ComputeDEDXPerVolume(const G4Material*, |
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131 | const G4ParticleDefinition*, |
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132 | G4double kineticEnergy, |
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133 | G4double cutEnergy = DBL_MAX); |
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134 | |
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135 | |
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136 | virtual G4double ComputeCrossSectionPerAtom(const G4ParticleDefinition*, |
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137 | G4double kinEnergy, |
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138 | G4double Z, |
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139 | G4double A = 0., |
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140 | G4double cutEnergy = 0.0, |
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141 | G4double maxEnergy = DBL_MAX); |
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142 | |
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143 | virtual G4double ComputeMeanFreePath(const G4ParticleDefinition*, |
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144 | G4double kineticEnergy, |
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145 | const G4Material*, |
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146 | G4double cutEnergy = 0.0, |
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147 | G4double maxEnergy = DBL_MAX); |
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148 | |
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149 | virtual G4double CrossSectionPerVolume(const G4Material*, |
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150 | const G4ParticleDefinition*, |
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151 | G4double kineticEnergy, |
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152 | G4double cutEnergy = 0.0, |
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153 | G4double maxEnergy = DBL_MAX); |
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154 | |
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155 | protected: |
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156 | |
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157 | virtual G4double MaxSecondaryEnergy(const G4ParticleDefinition*, |
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158 | G4double kineticEnergy); |
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159 | |
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160 | //------------------------------------------------------------------------ |
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161 | // Methods for msc simulation which needs to be overwritten |
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162 | //------------------------------------------------------------------------ |
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163 | |
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164 | public: |
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165 | |
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166 | virtual void SampleScattering(const G4DynamicParticle*, |
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167 | G4double safety); |
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168 | |
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169 | virtual G4double ComputeTruePathLengthLimit(const G4Track& track, |
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170 | G4PhysicsTable* theLambdaTable, |
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171 | G4double currentMinimalStep); |
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172 | |
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173 | virtual G4double ComputeGeomPathLength(G4double truePathLength); |
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174 | |
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175 | virtual G4double ComputeTrueStepLength(G4double geomPathLength); |
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176 | |
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177 | virtual void DefineForRegion(const G4Region*); |
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178 | |
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179 | //------------------------------------------------------------------------ |
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180 | // Generic methods common to all models |
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181 | //------------------------------------------------------------------------ |
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182 | |
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183 | void SetParticleChange(G4VParticleChange*, G4VEmFluctuationModel*); |
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184 | |
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185 | G4VEmFluctuationModel* GetModelOfFluctuations(); |
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186 | |
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187 | G4double HighEnergyLimit(); |
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188 | |
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189 | G4double LowEnergyLimit(); |
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190 | |
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191 | void SetHighEnergyLimit(G4double); |
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192 | |
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193 | void SetLowEnergyLimit(G4double); |
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194 | |
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195 | G4double MaxSecondaryKinEnergy(const G4DynamicParticle* dynParticle); |
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196 | |
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197 | const G4Element* SelectRandomAtom(const G4Material*, |
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198 | const G4ParticleDefinition*, |
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199 | G4double kineticEnergy, |
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200 | G4double cutEnergy = 0.0, |
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201 | G4double maxEnergy = DBL_MAX); |
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202 | |
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203 | const G4String& GetName() const; |
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204 | |
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205 | protected: |
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206 | |
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207 | const G4Element* GetCurrentElement() const; |
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208 | |
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209 | void SetCurrentElement(const G4Element*); |
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210 | |
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211 | private: |
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212 | |
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213 | // hide assignment operator |
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214 | G4VEmModel & operator=(const G4VEmModel &right); |
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215 | G4VEmModel(const G4VEmModel&); |
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216 | |
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217 | G4double lowLimit; |
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218 | G4double highLimit; |
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219 | G4double xsec[40]; |
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220 | |
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221 | G4VEmFluctuationModel* fluc; |
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222 | |
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223 | const G4String name; |
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224 | const G4Element* currentElement; |
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225 | |
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226 | protected: |
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227 | |
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228 | G4VParticleChange* pParticleChange; |
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229 | }; |
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230 | |
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231 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo...... |
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232 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo...... |
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233 | |
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234 | inline G4double G4VEmModel::HighEnergyLimit() |
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235 | { |
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236 | return highLimit; |
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237 | } |
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238 | |
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239 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo...... |
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240 | |
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241 | inline G4double G4VEmModel::LowEnergyLimit() |
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242 | { |
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243 | return lowLimit; |
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244 | } |
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245 | |
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246 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo...... |
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247 | |
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248 | inline void G4VEmModel::SetHighEnergyLimit(G4double val) |
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249 | { |
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250 | highLimit = val; |
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251 | } |
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252 | |
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253 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo...... |
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254 | |
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255 | inline void G4VEmModel::SetLowEnergyLimit(G4double val) |
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256 | { |
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257 | lowLimit = val; |
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258 | } |
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259 | |
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260 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo...... |
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261 | |
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262 | inline void G4VEmModel::SetParticleChange(G4VParticleChange* p, |
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263 | G4VEmFluctuationModel* f = 0) |
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264 | { |
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265 | if(p && pParticleChange != p) pParticleChange = p; |
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266 | fluc = f; |
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267 | } |
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268 | |
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269 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo...... |
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270 | |
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271 | |
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272 | inline G4VEmFluctuationModel* G4VEmModel::GetModelOfFluctuations() |
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273 | { |
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274 | return fluc; |
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275 | } |
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276 | |
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277 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo...... |
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278 | |
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279 | inline G4double G4VEmModel::MinEnergyCut(const G4ParticleDefinition*, |
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280 | const G4MaterialCutsCouple*) |
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281 | { |
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282 | return 0.0; |
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283 | } |
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284 | |
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285 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo...... |
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286 | |
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287 | inline G4double G4VEmModel::ComputeDEDXPerVolume( |
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288 | const G4Material*, |
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289 | const G4ParticleDefinition*, |
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290 | G4double, |
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291 | G4double) |
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292 | { |
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293 | return 0.0; |
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294 | } |
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295 | |
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296 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo...... |
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297 | |
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298 | inline G4double G4VEmModel::ComputeDEDX(const G4MaterialCutsCouple* c, |
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299 | const G4ParticleDefinition* p, |
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300 | G4double kinEnergy, |
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301 | G4double cutEnergy) |
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302 | { |
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303 | return ComputeDEDXPerVolume(c->GetMaterial(),p,kinEnergy,cutEnergy); |
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304 | } |
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305 | |
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306 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo...... |
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307 | |
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308 | inline G4double G4VEmModel::CrossSection(const G4MaterialCutsCouple* c, |
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309 | const G4ParticleDefinition* p, |
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310 | G4double kinEnergy, |
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311 | G4double cutEnergy, |
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312 | G4double maxEnergy) |
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313 | { |
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314 | return |
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315 | CrossSectionPerVolume(c->GetMaterial(),p,kinEnergy,cutEnergy,maxEnergy); |
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316 | } |
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317 | |
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318 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo...... |
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319 | |
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320 | inline G4double G4VEmModel::ComputeCrossSectionPerAtom( |
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321 | const G4ParticleDefinition*, |
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322 | G4double, G4double, G4double, |
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323 | G4double, G4double) |
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324 | { |
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325 | return 0.0; |
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326 | } |
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327 | |
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328 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo...... |
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329 | |
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330 | inline const G4Element* G4VEmModel::SelectRandomAtom( |
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331 | const G4Material* material, |
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332 | const G4ParticleDefinition* pd, |
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333 | G4double kinEnergy, |
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334 | G4double tcut, |
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335 | G4double tmax) |
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336 | { |
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337 | const G4ElementVector* theElementVector = material->GetElementVector(); |
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338 | G4int nelm = material->GetNumberOfElements(); |
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339 | currentElement = (*theElementVector)[nelm-1]; |
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340 | if (nelm > 1) { |
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341 | G4double x = G4UniformRand()* |
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342 | CrossSectionPerVolume(material,pd,kinEnergy,tcut,tmax); |
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343 | for(G4int i=0; i<nelm; i++) { |
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344 | if (x <= xsec[i]) { |
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345 | currentElement = (*theElementVector)[i]; |
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346 | break; |
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347 | } |
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348 | } |
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349 | } |
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350 | return currentElement; |
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351 | } |
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352 | |
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353 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo...... |
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354 | |
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355 | inline const G4Element* G4VEmModel::GetCurrentElement() const |
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356 | { |
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357 | return currentElement; |
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358 | } |
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359 | |
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360 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo...... |
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361 | |
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362 | inline void G4VEmModel::SetCurrentElement(const G4Element* elm) |
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363 | { |
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364 | currentElement = elm; |
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365 | } |
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366 | |
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367 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo...... |
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368 | |
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369 | inline G4double G4VEmModel::MaxSecondaryKinEnergy( |
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370 | const G4DynamicParticle* dynParticle) |
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371 | { |
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372 | return MaxSecondaryEnergy(dynParticle->GetDefinition(), |
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373 | dynParticle->GetKineticEnergy()); |
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374 | } |
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375 | |
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376 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo...... |
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377 | |
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378 | inline G4double G4VEmModel::MaxSecondaryEnergy(const G4ParticleDefinition*, |
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379 | G4double kineticEnergy) |
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380 | { |
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381 | return kineticEnergy; |
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382 | } |
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383 | |
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384 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo...... |
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385 | |
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386 | inline const G4String& G4VEmModel::GetName() const |
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387 | { |
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388 | return name; |
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389 | } |
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390 | |
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391 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo...... |
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392 | // Methods for msc simulation |
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393 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo...... |
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394 | |
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395 | inline void G4VEmModel::SampleScattering(const G4DynamicParticle*, G4double) |
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396 | {} |
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397 | |
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398 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo...... |
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399 | |
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400 | inline G4double G4VEmModel::ComputeTruePathLengthLimit( |
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401 | const G4Track&, |
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402 | G4PhysicsTable*, |
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403 | G4double) |
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404 | { |
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405 | return DBL_MAX; |
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406 | } |
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407 | |
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408 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo...... |
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409 | |
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410 | inline G4double G4VEmModel::ComputeGeomPathLength(G4double truePathLength) |
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411 | { |
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412 | return truePathLength; |
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413 | } |
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414 | |
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415 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo...... |
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416 | |
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417 | inline G4double G4VEmModel::ComputeTrueStepLength(G4double geomPathLength) |
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418 | { |
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419 | return geomPathLength; |
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420 | } |
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421 | |
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422 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo...... |
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423 | |
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424 | inline void G4VEmModel::DefineForRegion(const G4Region*) |
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425 | {} |
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426 | |
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427 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo...... |
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428 | |
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429 | #endif |
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430 | |
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