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 file |
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30 | // |
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31 | // |
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32 | // File name: G4hNuclearStoppingModel |
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33 | // |
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34 | // Author: V.Ivanchenko (Vladimir.Ivanchenko@cern.ch) |
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35 | // |
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36 | // Creation date: 20 July 2000 |
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37 | // |
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38 | // Modifications: |
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39 | // 20/07/2000 V.Ivanchenko First implementation |
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40 | // 22/08/2000 V.Ivanchenko Bug fixed in call of a model |
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41 | // 03/10/2000 V.Ivanchenko CodeWizard clean up |
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42 | // |
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43 | // Class Description: |
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44 | // |
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45 | // Low energy protons/ions nuclear stopping parametrisation |
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46 | // |
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47 | // Class Description: End |
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48 | // |
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49 | // ------------------------------------------------------------------- |
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50 | // |
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51 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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52 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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53 | |
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54 | #include "G4hNuclearStoppingModel.hh" |
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55 | #include "G4UnitsTable.hh" |
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56 | #include "globals.hh" |
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57 | #include "G4hZiegler1977Nuclear.hh" |
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58 | #include "G4hZiegler1985Nuclear.hh" |
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59 | #include "G4hICRU49Nuclear.hh" |
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60 | #include "G4DynamicParticle.hh" |
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61 | #include "G4ParticleDefinition.hh" |
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62 | #include "G4ElementVector.hh" |
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63 | #include "G4Material.hh" |
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64 | |
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65 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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66 | |
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67 | G4hNuclearStoppingModel::G4hNuclearStoppingModel(const G4String& name) |
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68 | :G4VLowEnergyModel(name), modelName(name) |
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69 | { |
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70 | InitializeMe() ; |
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71 | } |
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72 | |
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73 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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74 | |
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75 | void G4hNuclearStoppingModel::InitializeMe() |
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76 | { |
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77 | // Constants |
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78 | highEnergyLimit = 100.*MeV ; |
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79 | lowEnergyLimit = 1.*eV ; |
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80 | factorPDG2AMU = 1.007276/proton_mass_c2 ; |
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81 | theZieglerFactor= eV*cm2*1.0e-15 ; |
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82 | |
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83 | // Registration of parametrisation models of nuclear energy losses |
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84 | G4String blank = G4String(" ") ; |
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85 | G4String zi77 = G4String("Ziegler1977") ; |
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86 | G4String ir49 = G4String("ICRU_R49") ; |
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87 | G4String zi85 = G4String("Ziegler1985") ; |
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88 | if(zi77 == modelName) { |
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89 | nStopingPowerTable = new G4hZiegler1977Nuclear(); |
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90 | |
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91 | } else if(ir49 == modelName || blank == modelName) { |
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92 | nStopingPowerTable = new G4hICRU49Nuclear(); |
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93 | |
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94 | } else if(zi85 == modelName) { |
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95 | nStopingPowerTable = new G4hZiegler1985Nuclear(); |
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96 | |
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97 | } else { |
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98 | G4cout << |
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99 | "G4hLowEnergyIonisation warning: There is no table with the modelName <" |
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100 | << modelName << ">" |
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101 | << " for nuclear stopping, <ICRU_R49> is applied " |
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102 | << G4endl; |
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103 | nStopingPowerTable = new G4hICRU49Nuclear(); |
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104 | } |
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105 | |
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106 | // Default is nuclear stopping fluctuations On |
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107 | // nStopingPowerTable->SetNuclearStoppingFluctuationsOn(); |
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108 | nStopingPowerTable->SetNuclearStoppingFluctuationsOff(); |
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109 | } |
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110 | |
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111 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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112 | |
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113 | G4hNuclearStoppingModel::~G4hNuclearStoppingModel() |
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114 | { |
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115 | delete nStopingPowerTable; |
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116 | } |
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117 | |
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118 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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119 | |
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120 | G4double G4hNuclearStoppingModel::TheValue( |
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121 | const G4DynamicParticle* particle, |
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122 | const G4Material* material) |
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123 | { |
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124 | // Projectile nucleus |
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125 | G4double energy = particle->GetKineticEnergy() ; |
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126 | G4double z1 = std::abs((particle->GetCharge())/eplus) ; |
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127 | G4double m1 = (particle->GetMass())*factorPDG2AMU ; |
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128 | |
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129 | G4double nloss = StoppingPower(material, energy, z1, m1) * theZieglerFactor; |
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130 | |
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131 | return nloss; |
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132 | } |
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133 | |
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134 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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135 | |
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136 | G4double G4hNuclearStoppingModel::TheValue( |
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137 | const G4ParticleDefinition* aParticle, |
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138 | const G4Material* material, |
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139 | G4double kineticEnergy) |
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140 | { |
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141 | // Projectile nucleus |
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142 | G4double z1 = std::abs((aParticle->GetPDGCharge())/eplus) ; |
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143 | G4double m1 = (aParticle->GetPDGMass())*factorPDG2AMU ; |
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144 | |
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145 | G4double nloss = StoppingPower(material, kineticEnergy, z1, m1) |
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146 | * theZieglerFactor; |
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147 | |
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148 | return nloss; |
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149 | } |
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150 | |
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151 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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152 | |
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153 | G4double G4hNuclearStoppingModel::StoppingPower( |
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154 | const G4Material* material, |
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155 | G4double kineticEnergy, |
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156 | G4double z1, G4double m1) const |
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157 | { |
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158 | // Target nucleus |
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159 | G4int NumberOfElements = material->GetNumberOfElements() ; |
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160 | if(0 == NumberOfElements) return 0.0 ; |
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161 | |
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162 | const G4ElementVector* theElementVector = |
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163 | material->GetElementVector() ; |
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164 | const G4double* theAtomicNumDensityVector = |
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165 | material->GetAtomicNumDensityVector() ; |
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166 | |
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167 | // loop for the elements in the material |
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168 | |
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169 | G4double nloss = 0.0; |
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170 | |
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171 | for (G4int iel=0; iel<NumberOfElements; iel++) { |
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172 | const G4Element* element = (*theElementVector)[iel] ; |
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173 | G4double z2 = element->GetZ(); |
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174 | G4double m2 = element->GetA()*mole/g ; |
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175 | nloss += (nStopingPowerTable-> |
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176 | NuclearStoppingPower(kineticEnergy, z1, z2, m1, m2)) |
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177 | * theAtomicNumDensityVector[iel] ; |
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178 | } |
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179 | |
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180 | return nloss; |
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181 | } |
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182 | |
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183 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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184 | |
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185 | |
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186 | |
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187 | |
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188 | |
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189 | |
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190 | |
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191 | |
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