1 | // |
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2 | // ******************************************************************** |
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13 | // * work make any representation or warranty, express or implied, * |
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15 | // * use. Please see the license in the file LICENSE and URL above * |
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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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21 | // * any work based on the software) you agree to acknowledge its * |
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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: G4DNABornExcitationModel.cc,v 1.7 2009/08/31 14:03:29 sincerti Exp $ |
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27 | // GEANT4 tag $Name: geant4-09-03 $ |
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28 | // |
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29 | |
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30 | #include "G4DNABornExcitationModel.hh" |
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31 | |
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32 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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33 | |
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34 | using namespace std; |
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35 | |
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36 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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37 | |
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38 | G4DNABornExcitationModel::G4DNABornExcitationModel(const G4ParticleDefinition*, |
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39 | const G4String& nam) |
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40 | :G4VEmModel(nam),isInitialised(false) |
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41 | { |
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42 | |
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43 | lowEnergyLimit = 500 * keV; |
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44 | highEnergyLimit = 100 * MeV; |
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45 | SetLowEnergyLimit(lowEnergyLimit); |
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46 | SetHighEnergyLimit(highEnergyLimit); |
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47 | |
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48 | verboseLevel= 0; |
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49 | // Verbosity scale: |
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50 | // 0 = nothing |
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51 | // 1 = warning for energy non-conservation |
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52 | // 2 = details of energy budget |
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53 | // 3 = calculation of cross sections, file openings, sampling of atoms |
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54 | // 4 = entering in methods |
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55 | |
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56 | // |
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57 | |
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58 | table = 0; |
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59 | |
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60 | // |
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61 | |
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62 | if( verboseLevel>0 ) |
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63 | { |
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64 | G4cout << "Born excitation model is constructed " << G4endl |
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65 | << "Energy range: " |
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66 | << lowEnergyLimit / keV << " keV - " |
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67 | << highEnergyLimit / MeV << " MeV" |
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68 | << G4endl; |
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69 | } |
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70 | |
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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 | G4DNABornExcitationModel::~G4DNABornExcitationModel() |
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76 | { |
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77 | // Cross section |
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78 | delete table; |
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79 | } |
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80 | |
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81 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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82 | |
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83 | void G4DNABornExcitationModel::Initialise(const G4ParticleDefinition* /*particle*/, |
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84 | const G4DataVector& /*cuts*/) |
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85 | { |
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86 | |
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87 | if (verboseLevel > 3) |
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88 | G4cout << "Calling G4DNABornExcitationModel::Initialise()" << G4endl; |
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89 | |
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90 | // Energy limits |
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91 | |
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92 | if (LowEnergyLimit() < lowEnergyLimit) |
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93 | { |
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94 | G4cout << "G4DNABornExcitationModel: low energy limit increased from " << |
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95 | LowEnergyLimit()/keV << " keV to " << lowEnergyLimit/keV << " keV" << G4endl; |
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96 | SetLowEnergyLimit(lowEnergyLimit); |
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97 | } |
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98 | |
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99 | if (HighEnergyLimit() > highEnergyLimit) |
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100 | { |
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101 | G4cout << "G4DNABornExcitationModel: high energy limit decreased from " << |
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102 | HighEnergyLimit()/MeV << " MeV to " << highEnergyLimit/MeV << " MeV" << G4endl; |
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103 | SetHighEnergyLimit(highEnergyLimit); |
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104 | } |
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105 | |
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106 | // |
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107 | |
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108 | if (table == 0) |
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109 | { |
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110 | table = new G4DNACrossSectionDataSet(new G4LogLogInterpolation, eV,(1e-22/3.343)*m*m ); |
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111 | table->LoadData("dna/sigma_excitation_p_born"); |
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112 | } |
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113 | |
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114 | if( verboseLevel>0 ) |
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115 | { |
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116 | G4cout << "Born excitation model is initialized " << G4endl |
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117 | << "Energy range: " |
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118 | << LowEnergyLimit() / keV << " keV - " |
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119 | << HighEnergyLimit() / MeV << " MeV " << G4endl; |
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120 | } |
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121 | |
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122 | if(!isInitialised) |
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123 | { |
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124 | isInitialised = true; |
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125 | |
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126 | if(pParticleChange) |
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127 | fParticleChangeForGamma = reinterpret_cast<G4ParticleChangeForGamma*>(pParticleChange); |
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128 | else |
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129 | fParticleChangeForGamma = new G4ParticleChangeForGamma(); |
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130 | } |
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131 | |
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132 | // InitialiseElementSelectors(particle,cuts); |
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133 | |
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134 | // Test if water material |
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135 | |
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136 | flagMaterialIsWater= false; |
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137 | densityWater = 0; |
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138 | |
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139 | const G4ProductionCutsTable* theCoupleTable = G4ProductionCutsTable::GetProductionCutsTable(); |
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140 | |
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141 | if(theCoupleTable) |
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142 | { |
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143 | G4int numOfCouples = theCoupleTable->GetTableSize(); |
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144 | |
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145 | if(numOfCouples>0) |
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146 | { |
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147 | for (G4int i=0; i<numOfCouples; i++) |
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148 | { |
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149 | const G4MaterialCutsCouple* couple = theCoupleTable->GetMaterialCutsCouple(i); |
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150 | const G4Material* material = couple->GetMaterial(); |
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151 | |
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152 | if (material->GetName() == "G4_WATER") |
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153 | { |
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154 | G4double density = material->GetAtomicNumDensityVector()[1]; |
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155 | flagMaterialIsWater = true; |
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156 | densityWater = density; |
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157 | |
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158 | if (verboseLevel > 3) |
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159 | G4cout << "****** Water material is found with density(cm^-3)=" << density/(cm*cm*cm) << G4endl; |
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160 | } |
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161 | |
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162 | } |
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163 | |
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164 | } // if(numOfCouples>0) |
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165 | |
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166 | } // if (theCoupleTable) |
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167 | |
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168 | } |
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169 | |
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170 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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171 | |
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172 | G4double G4DNABornExcitationModel::CrossSectionPerVolume(const G4Material*, |
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173 | const G4ParticleDefinition* particleDefinition, |
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174 | G4double k, |
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175 | G4double, |
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176 | G4double) |
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177 | { |
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178 | if (verboseLevel > 3) |
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179 | G4cout << "Calling CrossSectionPerVolume() of G4DNABornExcitationModel" << G4endl; |
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180 | |
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181 | // Calculate total cross section for model |
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182 | |
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183 | G4double crossSection=0; |
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184 | |
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185 | if (flagMaterialIsWater) |
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186 | { |
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187 | if (particleDefinition == G4Proton::ProtonDefinition()) |
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188 | { |
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189 | if (k >= lowEnergyLimit && k < highEnergyLimit) |
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190 | { |
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191 | crossSection = table->FindValue(k); |
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192 | } |
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193 | |
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194 | if (verboseLevel > 3) |
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195 | { |
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196 | G4cout << "---> Kinetic energy(keV)=" << k/keV << G4endl; |
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197 | G4cout << " - Cross section per water molecule (cm^2)=" << crossSection/cm/cm << G4endl; |
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198 | G4cout << " - Cross section per water molecule (cm^-1)=" << crossSection*densityWater/(1./cm) << G4endl; |
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199 | } |
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200 | } |
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201 | } // if (flagMaterialIsWater) |
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202 | |
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203 | return crossSection*densityWater; |
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204 | |
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205 | } |
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206 | |
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207 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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208 | |
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209 | void G4DNABornExcitationModel::SampleSecondaries(std::vector<G4DynamicParticle*>* /*fvect*/, |
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210 | const G4MaterialCutsCouple* /*couple*/, |
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211 | const G4DynamicParticle* aDynamicParticle, |
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212 | G4double, |
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213 | G4double) |
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214 | { |
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215 | |
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216 | if (verboseLevel > 3) |
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217 | G4cout << "Calling SampleSecondaries() of G4DNABornExcitationModel" << G4endl; |
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218 | |
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219 | G4double k = aDynamicParticle->GetKineticEnergy(); |
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220 | |
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221 | G4int level = RandomSelect(k); |
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222 | G4double excitationEnergy = waterStructure.ExcitationEnergy(level); |
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223 | G4double newEnergy = k - excitationEnergy; |
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224 | |
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225 | if (newEnergy > 0) |
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226 | { |
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227 | fParticleChangeForGamma->ProposeMomentumDirection(aDynamicParticle->GetMomentumDirection()); |
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228 | fParticleChangeForGamma->SetProposedKineticEnergy(newEnergy); |
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229 | fParticleChangeForGamma->ProposeLocalEnergyDeposit(excitationEnergy); |
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230 | } |
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231 | |
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232 | } |
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233 | |
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234 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo...... |
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235 | |
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236 | G4int G4DNABornExcitationModel::RandomSelect(G4double k) |
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237 | { |
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238 | G4int level = 0; |
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239 | |
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240 | G4double* valuesBuffer = new G4double[table->NumberOfComponents()]; |
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241 | |
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242 | const size_t n(table->NumberOfComponents()); |
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243 | size_t i(n); |
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244 | G4double value = 0.; |
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245 | |
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246 | while (i>0) |
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247 | { |
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248 | i--; |
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249 | valuesBuffer[i] = table->GetComponent(i)->FindValue(k); |
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250 | value += valuesBuffer[i]; |
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251 | } |
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252 | |
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253 | value *= G4UniformRand(); |
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254 | |
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255 | i = n; |
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256 | |
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257 | while (i > 0) |
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258 | { |
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259 | i--; |
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260 | |
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261 | if (valuesBuffer[i] > value) |
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262 | { |
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263 | delete[] valuesBuffer; |
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264 | return i; |
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265 | } |
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266 | value -= valuesBuffer[i]; |
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267 | } |
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268 | |
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269 | if (valuesBuffer) delete[] valuesBuffer; |
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270 | |
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271 | return level; |
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272 | } |
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273 | |
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274 | |
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