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 | // $Id: G4FinalStateIonisationBorn.cc,v 1.19 2009/06/11 15:47:08 mantero Exp $ |
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27 | // GEANT4 tag $Name: geant4-09-04-beta-cand-01 $ |
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28 | |
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29 | #include "G4FinalStateIonisationBorn.hh" |
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30 | |
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31 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo...... |
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32 | |
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33 | G4FinalStateIonisationBorn::G4FinalStateIonisationBorn() |
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34 | { |
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35 | G4double scaleFactor = (1.e-22 / 3.343) * m*m; |
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36 | |
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37 | G4ParticleDefinition* electronDef = G4Electron::ElectronDefinition(); |
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38 | G4ParticleDefinition* protonDef = G4Proton::ProtonDefinition(); |
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39 | |
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40 | G4String electron; |
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41 | G4String proton; |
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42 | |
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43 | lowEnergyLimitDefault = 12.61 * eV; // SI: i/o 25 eV |
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44 | highEnergyLimitDefault = 10 * MeV; |
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45 | |
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46 | char *path = getenv("G4LEDATA"); |
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47 | |
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48 | if (!path) |
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49 | G4Exception("G4DNACrossSectionDataSet::FullFileName - G4LEDATA environment variable not set"); |
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50 | |
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51 | if (electronDef != 0) |
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52 | { |
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53 | electron = electronDef->GetParticleName(); |
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54 | lowEnergyLimit[electron] = 12.61 * eV; // SI: i/o 25 eV |
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55 | highEnergyLimit[electron] = 30. * keV; |
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56 | |
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57 | std::ostringstream eFullFileName; |
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58 | eFullFileName << path << "/dna/sigmadiff_ionisation_e_born.dat"; |
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59 | std::ifstream eDiffCrossSection(eFullFileName.str().c_str()); |
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60 | if (!eDiffCrossSection) |
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61 | { |
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62 | G4Exception("G4FinalStateIonisationBorn::ERROR OPENING electron DATA FILE"); |
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63 | } |
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64 | |
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65 | eTdummyVec.push_back(0.); |
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66 | while(!eDiffCrossSection.eof()) |
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67 | { |
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68 | double tDummy; |
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69 | double eDummy; |
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70 | eDiffCrossSection>>tDummy>>eDummy; |
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71 | if (tDummy != eTdummyVec.back()) eTdummyVec.push_back(tDummy); |
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72 | for (int j=0; j<5; j++) |
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73 | { |
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74 | eDiffCrossSection>>eDiffCrossSectionData[j][tDummy][eDummy]; |
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75 | |
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76 | // SI - only if eof is not reached ! |
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77 | if (!eDiffCrossSection.eof()) eDiffCrossSectionData[j][tDummy][eDummy]*=scaleFactor; |
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78 | |
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79 | eVecm[tDummy].push_back(eDummy); |
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80 | |
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81 | } |
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82 | } |
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83 | |
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84 | } |
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85 | else |
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86 | { |
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87 | G4Exception("G4FinalStateIonisationBorn Constructor: electron is not defined"); |
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88 | } |
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89 | |
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90 | if (protonDef != 0) |
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91 | { |
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92 | proton = protonDef->GetParticleName(); |
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93 | lowEnergyLimit[proton] = 500. * keV; |
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94 | highEnergyLimit[proton] = 10. * MeV; |
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95 | |
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96 | std::ostringstream pFullFileName; |
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97 | pFullFileName << path << "/dna/sigmadiff_ionisation_p_born.dat"; |
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98 | std::ifstream pDiffCrossSection(pFullFileName.str().c_str()); |
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99 | if (!pDiffCrossSection) |
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100 | { |
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101 | G4Exception("G4FinalStateIonisationBorn::ERROR OPENING proton DATA FILE"); |
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102 | } |
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103 | |
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104 | pTdummyVec.push_back(0.); |
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105 | while(!pDiffCrossSection.eof()) |
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106 | { |
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107 | double tDummy; |
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108 | double eDummy; |
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109 | pDiffCrossSection>>tDummy>>eDummy; |
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110 | if (tDummy != pTdummyVec.back()) pTdummyVec.push_back(tDummy); |
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111 | for (int j=0; j<5; j++) |
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112 | { |
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113 | pDiffCrossSection>>pDiffCrossSectionData[j][tDummy][eDummy]; |
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114 | |
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115 | // SI - only if eof is not reached ! |
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116 | if (!pDiffCrossSection.eof()) pDiffCrossSectionData[j][tDummy][eDummy]*=scaleFactor; |
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117 | |
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118 | pVecm[tDummy].push_back(eDummy); |
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119 | } |
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120 | } |
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121 | } |
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122 | else |
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123 | { |
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124 | G4Exception("G4FinalStateIonisationBorn Constructor: proton is not defined"); |
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125 | } |
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126 | |
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127 | G4cout << G4endl; |
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128 | G4cout << "*******************************************************************************" << G4endl; |
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129 | G4cout << "*******************************************************************************" << G4endl; |
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130 | G4cout << " The class G4FinalStateIonisationBorn is NOT SUPPORTED ANYMORE. " << G4endl; |
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131 | G4cout << " It will be REMOVED with the next major release of Geant4. " << G4endl; |
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132 | G4cout << " Please consult: https://twiki.cern.ch/twiki/bin/view/Geant4/LoweProcesses" << G4endl; |
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133 | G4cout << "*******************************************************************************" << G4endl; |
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134 | G4cout << "*******************************************************************************" << G4endl; |
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135 | G4cout << G4endl; |
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136 | } |
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137 | |
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138 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo...... |
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139 | |
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140 | G4FinalStateIonisationBorn::~G4FinalStateIonisationBorn() |
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141 | { |
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142 | eVecm.clear(); |
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143 | pVecm.clear(); |
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144 | } |
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145 | |
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146 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo...... |
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147 | |
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148 | const G4FinalStateProduct& G4FinalStateIonisationBorn::GenerateFinalState(const G4Track& track, const G4Step& /* step */) |
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149 | { |
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150 | product.Clear(); |
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151 | |
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152 | const G4DynamicParticle* particle = track.GetDynamicParticle(); |
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153 | |
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154 | G4double lowLim = lowEnergyLimitDefault; |
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155 | G4double highLim = highEnergyLimitDefault; |
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156 | |
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157 | G4double k = particle->GetKineticEnergy(); |
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158 | |
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159 | const G4String& particleName = particle->GetDefinition()->GetParticleName(); |
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160 | |
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161 | std::map< G4String,G4double,std::less<G4String> >::iterator pos1; |
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162 | pos1 = lowEnergyLimit.find(particleName); |
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163 | |
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164 | if (pos1 != lowEnergyLimit.end()) |
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165 | { |
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166 | lowLim = pos1->second; |
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167 | } |
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168 | |
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169 | std::map< G4String,G4double,std::less<G4String> >::iterator pos2; |
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170 | pos2 = highEnergyLimit.find(particleName); |
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171 | |
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172 | if (pos2 != highEnergyLimit.end()) |
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173 | { |
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174 | highLim = pos2->second; |
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175 | } |
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176 | |
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177 | if (k >= lowLim && k <= highLim) |
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178 | { |
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179 | G4ParticleMomentum primaryDirection = particle->GetMomentumDirection(); |
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180 | G4double particleMass = particle->GetDefinition()->GetPDGMass(); |
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181 | G4double totalEnergy = k + particleMass; |
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182 | G4double pSquare = k * (totalEnergy + particleMass); |
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183 | G4double totalMomentum = std::sqrt(pSquare); |
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184 | |
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185 | const G4String& particleName = particle->GetDefinition()->GetParticleName(); |
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186 | |
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187 | G4int ionizationShell = cross.RandomSelect(k,particleName); |
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188 | |
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189 | G4double secondaryKinetic = RandomizeEjectedElectronEnergy(particle->GetDefinition(),k,ionizationShell); |
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190 | |
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191 | G4double bindingEnergy = waterStructure.IonisationEnergy(ionizationShell); |
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192 | |
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193 | G4double cosTheta = 0.; |
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194 | G4double phi = 0.; |
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195 | RandomizeEjectedElectronDirection(track.GetDefinition(), k,secondaryKinetic, cosTheta, phi); |
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196 | |
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197 | G4double sinTheta = std::sqrt(1.-cosTheta*cosTheta); |
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198 | G4double dirX = sinTheta*std::cos(phi); |
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199 | G4double dirY = sinTheta*std::sin(phi); |
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200 | G4double dirZ = cosTheta; |
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201 | G4ThreeVector deltaDirection(dirX,dirY,dirZ); |
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202 | deltaDirection.rotateUz(primaryDirection); |
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203 | |
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204 | G4double deltaTotalMomentum = std::sqrt(secondaryKinetic*(secondaryKinetic + 2.*electron_mass_c2 )); |
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205 | |
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206 | G4double finalPx = totalMomentum*primaryDirection.x() - deltaTotalMomentum*deltaDirection.x(); |
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207 | G4double finalPy = totalMomentum*primaryDirection.y() - deltaTotalMomentum*deltaDirection.y(); |
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208 | G4double finalPz = totalMomentum*primaryDirection.z() - deltaTotalMomentum*deltaDirection.z(); |
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209 | G4double finalMomentum = std::sqrt(finalPx*finalPx + finalPy*finalPy + finalPz*finalPz); |
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210 | finalPx /= finalMomentum; |
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211 | finalPy /= finalMomentum; |
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212 | finalPz /= finalMomentum; |
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213 | |
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214 | product.ModifyPrimaryParticle(finalPx,finalPy,finalPz,k-bindingEnergy-secondaryKinetic); |
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215 | product.AddEnergyDeposit(bindingEnergy); |
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216 | |
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217 | G4DynamicParticle* aElectron = new G4DynamicParticle(G4Electron::Electron(),deltaDirection,secondaryKinetic); |
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218 | product.AddSecondary(aElectron); |
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219 | } |
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220 | |
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221 | return product; |
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222 | } |
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223 | |
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224 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo...... |
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225 | |
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226 | G4double G4FinalStateIonisationBorn::RandomizeEjectedElectronEnergy(G4ParticleDefinition* particleDefinition, |
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227 | G4double k, G4int shell) |
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228 | { |
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229 | if (particleDefinition == G4Electron::ElectronDefinition()) |
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230 | { |
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231 | G4double maximumEnergyTransfer=0.; |
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232 | if ((k+waterStructure.IonisationEnergy(shell))/2. > k) maximumEnergyTransfer=k; |
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233 | else maximumEnergyTransfer = (k+waterStructure.IonisationEnergy(shell))/2.; |
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234 | |
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235 | G4double crossSectionMaximum = 0.; |
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236 | for(G4double value=waterStructure.IonisationEnergy(shell); value<=maximumEnergyTransfer; value+=0.1*eV) |
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237 | { |
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238 | G4double differentialCrossSection = DifferentialCrossSection(particleDefinition, k/eV, value/eV, shell); |
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239 | if(differentialCrossSection >= crossSectionMaximum) crossSectionMaximum = differentialCrossSection; |
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240 | } |
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241 | |
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242 | G4double secondaryElectronKineticEnergy=0.; |
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243 | do |
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244 | { |
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245 | secondaryElectronKineticEnergy = G4UniformRand() * (maximumEnergyTransfer-waterStructure.IonisationEnergy(shell)); |
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246 | } while(G4UniformRand()*crossSectionMaximum > |
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247 | DifferentialCrossSection(particleDefinition, k/eV,(secondaryElectronKineticEnergy+waterStructure.IonisationEnergy(shell))/eV,shell)); |
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248 | |
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249 | return secondaryElectronKineticEnergy; |
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250 | |
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251 | } |
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252 | |
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253 | if (particleDefinition == G4Proton::ProtonDefinition()) |
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254 | { |
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255 | G4double maximumKineticEnergyTransfer = 4.* (electron_mass_c2 / proton_mass_c2) * k - (waterStructure.IonisationEnergy(shell)); |
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256 | |
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257 | G4double crossSectionMaximum = 0.; |
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258 | for (G4double value = waterStructure.IonisationEnergy(shell); |
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259 | value<=4.*waterStructure.IonisationEnergy(shell) ; |
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260 | value+=0.1*eV) |
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261 | { |
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262 | G4double differentialCrossSection = DifferentialCrossSection(particleDefinition, k/eV, value/eV, shell); |
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263 | if (differentialCrossSection >= crossSectionMaximum) crossSectionMaximum = differentialCrossSection; |
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264 | } |
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265 | |
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266 | G4double secondaryElectronKineticEnergy = 0.; |
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267 | do |
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268 | { |
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269 | secondaryElectronKineticEnergy = G4UniformRand() * maximumKineticEnergyTransfer; |
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270 | } while(G4UniformRand()*crossSectionMaximum >= |
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271 | DifferentialCrossSection(particleDefinition, k/eV,(secondaryElectronKineticEnergy+waterStructure.IonisationEnergy(shell))/eV,shell)); |
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272 | |
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273 | return secondaryElectronKineticEnergy; |
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274 | } |
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275 | |
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276 | return 0; |
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277 | } |
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278 | |
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279 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo...... |
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280 | |
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281 | void G4FinalStateIonisationBorn::RandomizeEjectedElectronDirection(G4ParticleDefinition* particleDefinition, |
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282 | G4double k, |
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283 | G4double secKinetic, |
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284 | G4double & cosTheta, |
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285 | G4double & phi ) |
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286 | { |
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287 | if (particleDefinition == G4Electron::ElectronDefinition()) |
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288 | { |
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289 | phi = twopi * G4UniformRand(); |
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290 | if (secKinetic < 50.*eV) cosTheta = (2.*G4UniformRand())-1.; |
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291 | else if (secKinetic <= 200.*eV) |
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292 | { |
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293 | if (G4UniformRand() <= 0.1) cosTheta = (2.*G4UniformRand())-1.; |
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294 | else cosTheta = G4UniformRand()*(std::sqrt(2.)/2); |
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295 | } |
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296 | else |
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297 | { |
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298 | G4double sin2O = (1.-secKinetic/k) / (1.+secKinetic/(2.*electron_mass_c2)); |
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299 | cosTheta = std::sqrt(1.-sin2O); |
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300 | } |
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301 | } |
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302 | |
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303 | if (particleDefinition == G4Proton::ProtonDefinition()) |
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304 | { |
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305 | G4double maxSecKinetic = 4.* (electron_mass_c2 / proton_mass_c2) * k; |
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306 | phi = twopi * G4UniformRand(); |
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307 | cosTheta = std::sqrt(secKinetic / maxSecKinetic); |
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308 | } |
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309 | } |
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310 | |
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311 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo...... |
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312 | |
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313 | double G4FinalStateIonisationBorn::DifferentialCrossSection(G4ParticleDefinition * particleDefinition, |
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314 | G4double k, |
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315 | G4double energyTransfer, |
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316 | G4int ionizationLevelIndex) |
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317 | { |
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318 | G4double sigma = 0.; |
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319 | |
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320 | if (energyTransfer >= waterStructure.IonisationEnergy(ionizationLevelIndex)) |
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321 | { |
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322 | G4double valueT1 = 0; |
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323 | G4double valueT2 = 0; |
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324 | G4double valueE21 = 0; |
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325 | G4double valueE22 = 0; |
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326 | G4double valueE12 = 0; |
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327 | G4double valueE11 = 0; |
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328 | |
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329 | G4double xs11 = 0; |
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330 | G4double xs12 = 0; |
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331 | G4double xs21 = 0; |
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332 | G4double xs22 = 0; |
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333 | |
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334 | if (particleDefinition == G4Electron::ElectronDefinition()) |
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335 | { |
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336 | // k should be in eV and energy transfer eV also |
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337 | |
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338 | std::vector<double>::iterator t2 = std::upper_bound(eTdummyVec.begin(),eTdummyVec.end(), k); |
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339 | |
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340 | std::vector<double>::iterator t1 = t2-1; |
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341 | |
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342 | // SI : the following condition avoids situations where energyTransfer >last vector element |
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343 | if (energyTransfer <= eVecm[(*t1)].back()) |
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344 | { |
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345 | std::vector<double>::iterator e12 = std::upper_bound(eVecm[(*t1)].begin(),eVecm[(*t1)].end(), energyTransfer); |
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346 | std::vector<double>::iterator e11 = e12-1; |
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347 | |
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348 | std::vector<double>::iterator e22 = std::upper_bound(eVecm[(*t2)].begin(),eVecm[(*t2)].end(), energyTransfer); |
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349 | std::vector<double>::iterator e21 = e22-1; |
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350 | |
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351 | valueT1 =*t1; |
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352 | valueT2 =*t2; |
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353 | valueE21 =*e21; |
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354 | valueE22 =*e22; |
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355 | valueE12 =*e12; |
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356 | valueE11 =*e11; |
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357 | |
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358 | xs11 = eDiffCrossSectionData[ionizationLevelIndex][valueT1][valueE11]; |
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359 | xs12 = eDiffCrossSectionData[ionizationLevelIndex][valueT1][valueE12]; |
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360 | xs21 = eDiffCrossSectionData[ionizationLevelIndex][valueT2][valueE21]; |
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361 | xs22 = eDiffCrossSectionData[ionizationLevelIndex][valueT2][valueE22]; |
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362 | } |
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363 | |
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364 | } |
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365 | |
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366 | if (particleDefinition == G4Proton::ProtonDefinition()) |
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367 | { |
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368 | // k should be in eV and energy transfer eV also |
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369 | std::vector<double>::iterator t2 = std::upper_bound(pTdummyVec.begin(),pTdummyVec.end(), k); |
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370 | std::vector<double>::iterator t1 = t2-1; |
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371 | |
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372 | std::vector<double>::iterator e12 = std::upper_bound(pVecm[(*t1)].begin(),pVecm[(*t1)].end(), energyTransfer); |
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373 | std::vector<double>::iterator e11 = e12-1; |
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374 | |
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375 | std::vector<double>::iterator e22 = std::upper_bound(pVecm[(*t2)].begin(),pVecm[(*t2)].end(), energyTransfer); |
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376 | std::vector<double>::iterator e21 = e22-1; |
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377 | |
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378 | valueT1 =*t1; |
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379 | valueT2 =*t2; |
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380 | valueE21 =*e21; |
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381 | valueE22 =*e22; |
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382 | valueE12 =*e12; |
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383 | valueE11 =*e11; |
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384 | |
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385 | xs11 = pDiffCrossSectionData[ionizationLevelIndex][valueT1][valueE11]; |
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386 | xs12 = pDiffCrossSectionData[ionizationLevelIndex][valueT1][valueE12]; |
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387 | xs21 = pDiffCrossSectionData[ionizationLevelIndex][valueT2][valueE21]; |
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388 | xs22 = pDiffCrossSectionData[ionizationLevelIndex][valueT2][valueE22]; |
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389 | |
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390 | } |
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391 | |
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392 | G4double xsProduct = xs11 * xs12 * xs21 * xs22; |
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393 | if (xsProduct != 0.) |
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394 | { |
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395 | sigma = QuadInterpolator( valueE11, valueE12, |
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396 | valueE21, valueE22, |
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397 | xs11, xs12, |
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398 | xs21, xs22, |
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399 | valueT1, valueT2, |
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400 | k, energyTransfer); |
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401 | } |
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402 | |
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403 | } |
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404 | |
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405 | return sigma; |
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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 | G4double G4FinalStateIonisationBorn::LogLogInterpolate(G4double e1, |
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411 | G4double e2, |
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412 | G4double e, |
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413 | G4double xs1, |
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414 | G4double xs2) |
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415 | { |
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416 | G4double a = (std::log10(xs2)-std::log10(xs1)) / (std::log10(e2)-std::log10(e1)); |
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417 | G4double b = std::log10(xs2) - a*std::log10(e2); |
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418 | G4double sigma = a*std::log10(e) + b; |
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419 | G4double value = (std::pow(10.,sigma)); |
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420 | return value; |
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421 | } |
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422 | |
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423 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo...... |
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424 | |
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425 | G4double G4FinalStateIonisationBorn::QuadInterpolator(G4double e11, G4double e12, |
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426 | G4double e21, G4double e22, |
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427 | G4double xs11, G4double xs12, |
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428 | G4double xs21, G4double xs22, |
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429 | G4double t1, G4double t2, |
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430 | G4double t, G4double e) |
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431 | { |
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432 | G4double interpolatedvalue1 = LogLogInterpolate(e11, e12, e, xs11, xs12); |
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433 | G4double interpolatedvalue2 = LogLogInterpolate(e21, e22, e, xs21, xs22); |
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434 | G4double value = LogLogInterpolate(t1, t2, t, interpolatedvalue1, interpolatedvalue2); |
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435 | return value; |
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436 | } |
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437 | |
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438 | |
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