1 | // ******************************************************************** |
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14 | // * use. Please see the license in the file LICENSE and URL above * |
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23 | // ******************************************************************** |
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24 | // |
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25 | // $Id: G4DNABornIonisationModel.cc,v 1.4 2009/02/16 11:00:11 sincerti Exp $ |
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26 | // GEANT4 tag $Name: geant4-09-02-ref-02 $ |
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27 | // |
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28 | |
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29 | #include "G4DNABornIonisationModel.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 | using namespace std; |
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34 | |
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35 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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36 | |
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37 | G4DNABornIonisationModel::G4DNABornIonisationModel(const G4ParticleDefinition*, |
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38 | const G4String& nam) |
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39 | :G4VEmModel(nam),isInitialised(false) |
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40 | { |
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41 | verboseLevel= 0; |
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42 | // Verbosity scale: |
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43 | // 0 = nothing |
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44 | // 1 = warning for energy non-conservation |
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45 | // 2 = details of energy budget |
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46 | // 3 = calculation of cross sections, file openings, sampling of atoms |
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47 | // 4 = entering in methods |
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48 | |
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49 | G4cout << "Born ionisation model is constructed " << G4endl; |
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50 | } |
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51 | |
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52 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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53 | |
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54 | G4DNABornIonisationModel::~G4DNABornIonisationModel() |
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55 | { |
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56 | // Cross section |
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57 | |
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58 | std::map< G4String,G4DNACrossSectionDataSet*,std::less<G4String> >::iterator pos; |
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59 | for (pos = tableData.begin(); pos != tableData.end(); ++pos) |
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60 | { |
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61 | G4DNACrossSectionDataSet* table = pos->second; |
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62 | delete table; |
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63 | } |
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64 | |
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65 | // Final state |
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66 | |
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67 | eVecm.clear(); |
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68 | pVecm.clear(); |
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69 | |
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70 | } |
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71 | |
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72 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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73 | |
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74 | void G4DNABornIonisationModel::Initialise(const G4ParticleDefinition* particle, |
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75 | const G4DataVector& /*cuts*/) |
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76 | { |
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77 | |
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78 | if (verboseLevel > 3) |
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79 | G4cout << "Calling G4DNABornIonisationModel::Initialise()" << G4endl; |
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80 | |
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81 | // Energy limits |
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82 | |
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83 | G4String fileElectron("dna/sigma_ionisation_e_born"); |
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84 | G4String fileProton("dna/sigma_ionisation_p_born"); |
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85 | |
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86 | G4ParticleDefinition* electronDef = G4Electron::ElectronDefinition(); |
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87 | G4ParticleDefinition* protonDef = G4Proton::ProtonDefinition(); |
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88 | |
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89 | G4String electron; |
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90 | G4String proton; |
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91 | |
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92 | G4double scaleFactor = (1.e-22 / 3.343) * m*m; |
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93 | |
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94 | char *path = getenv("G4LEDATA"); |
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95 | |
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96 | if (electronDef != 0) |
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97 | { |
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98 | electron = electronDef->GetParticleName(); |
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99 | |
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100 | tableFile[electron] = fileElectron; |
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101 | |
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102 | lowEnergyLimit[electron] = 12.61 * eV; |
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103 | highEnergyLimit[electron] = 30. * keV; |
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104 | |
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105 | // Cross section |
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106 | |
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107 | G4DNACrossSectionDataSet* tableE = new G4DNACrossSectionDataSet(new G4LogLogInterpolation, eV,scaleFactor ); |
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108 | tableE->LoadData(fileElectron); |
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109 | |
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110 | tableData[electron] = tableE; |
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111 | |
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112 | // Final state |
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113 | |
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114 | std::ostringstream eFullFileName; |
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115 | eFullFileName << path << "/dna/sigmadiff_ionisation_e_born.dat"; |
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116 | std::ifstream eDiffCrossSection(eFullFileName.str().c_str()); |
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117 | |
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118 | if (!eDiffCrossSection) |
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119 | { |
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120 | G4Exception("G4DNABornIonisationModel::ERROR OPENING electron DATA FILE"); |
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121 | } |
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122 | |
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123 | eTdummyVec.push_back(0.); |
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124 | while(!eDiffCrossSection.eof()) |
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125 | { |
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126 | double tDummy; |
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127 | double eDummy; |
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128 | eDiffCrossSection>>tDummy>>eDummy; |
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129 | if (tDummy != eTdummyVec.back()) eTdummyVec.push_back(tDummy); |
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130 | for (int j=0; j<5; j++) |
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131 | { |
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132 | eDiffCrossSection>>eDiffCrossSectionData[j][tDummy][eDummy]; |
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133 | |
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134 | // SI - only if eof is not reached ! |
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135 | if (!eDiffCrossSection.eof()) eDiffCrossSectionData[j][tDummy][eDummy]*=scaleFactor; |
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136 | |
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137 | eVecm[tDummy].push_back(eDummy); |
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138 | |
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139 | } |
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140 | } |
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141 | |
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142 | // |
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143 | } |
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144 | else |
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145 | { |
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146 | G4Exception("G4DNABornIonisationModel::Initialise(): electron is not defined"); |
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147 | } |
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148 | |
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149 | if (protonDef != 0) |
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150 | { |
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151 | proton = protonDef->GetParticleName(); |
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152 | |
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153 | tableFile[proton] = fileProton; |
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154 | |
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155 | lowEnergyLimit[proton] = 500. * keV; |
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156 | highEnergyLimit[proton] = 10. * MeV; |
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157 | |
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158 | // Cross section |
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159 | |
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160 | G4DNACrossSectionDataSet* tableP = new G4DNACrossSectionDataSet(new G4LogLogInterpolation, eV,scaleFactor ); |
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161 | tableP->LoadData(fileProton); |
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162 | |
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163 | tableData[proton] = tableP; |
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164 | |
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165 | // Final state |
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166 | |
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167 | std::ostringstream pFullFileName; |
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168 | pFullFileName << path << "/dna/sigmadiff_ionisation_p_born.dat"; |
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169 | std::ifstream pDiffCrossSection(pFullFileName.str().c_str()); |
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170 | |
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171 | if (!pDiffCrossSection) |
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172 | { |
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173 | G4Exception("G4DNABornIonisationModel::ERROR OPENING proton DATA FILE"); |
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174 | } |
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175 | |
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176 | pTdummyVec.push_back(0.); |
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177 | while(!pDiffCrossSection.eof()) |
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178 | { |
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179 | double tDummy; |
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180 | double eDummy; |
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181 | pDiffCrossSection>>tDummy>>eDummy; |
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182 | if (tDummy != pTdummyVec.back()) pTdummyVec.push_back(tDummy); |
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183 | for (int j=0; j<5; j++) |
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184 | { |
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185 | pDiffCrossSection>>pDiffCrossSectionData[j][tDummy][eDummy]; |
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186 | |
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187 | // SI - only if eof is not reached ! |
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188 | if (!pDiffCrossSection.eof()) pDiffCrossSectionData[j][tDummy][eDummy]*=scaleFactor; |
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189 | |
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190 | pVecm[tDummy].push_back(eDummy); |
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191 | } |
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192 | } |
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193 | |
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194 | } |
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195 | else |
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196 | { |
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197 | G4Exception("G4DNABornIonisationModel::Initialise(): proton is not defined"); |
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198 | } |
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199 | |
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200 | if (particle==electronDef) |
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201 | { |
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202 | SetLowEnergyLimit(lowEnergyLimit[electron]); |
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203 | SetHighEnergyLimit(highEnergyLimit[electron]); |
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204 | } |
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205 | |
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206 | if (particle==protonDef) |
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207 | { |
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208 | SetLowEnergyLimit(lowEnergyLimit[proton]); |
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209 | SetHighEnergyLimit(highEnergyLimit[proton]); |
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210 | } |
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211 | |
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212 | G4cout << "Born ionisation model is initialized " << G4endl |
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213 | << "Energy range: " |
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214 | << LowEnergyLimit() / eV << " eV - " |
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215 | << HighEnergyLimit() / keV << " keV for " |
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216 | << particle->GetParticleName() |
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217 | << G4endl; |
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218 | |
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219 | // |
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220 | |
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221 | if(!isInitialised) |
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222 | { |
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223 | isInitialised = true; |
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224 | |
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225 | if(pParticleChange) |
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226 | fParticleChangeForGamma = reinterpret_cast<G4ParticleChangeForGamma*>(pParticleChange); |
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227 | else |
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228 | fParticleChangeForGamma = new G4ParticleChangeForGamma(); |
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229 | } |
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230 | |
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231 | // InitialiseElementSelectors(particle,cuts); |
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232 | |
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233 | // Test if water material |
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234 | |
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235 | flagMaterialIsWater= false; |
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236 | densityWater = 0; |
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237 | |
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238 | const G4ProductionCutsTable* theCoupleTable = G4ProductionCutsTable::GetProductionCutsTable(); |
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239 | |
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240 | if(theCoupleTable) |
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241 | { |
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242 | G4int numOfCouples = theCoupleTable->GetTableSize(); |
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243 | |
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244 | if(numOfCouples>0) |
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245 | { |
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246 | for (G4int i=0; i<numOfCouples; i++) |
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247 | { |
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248 | const G4MaterialCutsCouple* couple = theCoupleTable->GetMaterialCutsCouple(i); |
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249 | const G4Material* material = couple->GetMaterial(); |
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250 | |
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251 | size_t j = material->GetNumberOfElements(); |
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252 | while (j>0) |
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253 | { |
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254 | j--; |
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255 | const G4Element* element(material->GetElement(j)); |
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256 | if (element->GetZ() == 8.) |
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257 | { |
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258 | G4double density = material->GetAtomicNumDensityVector()[j]; |
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259 | if (density > 0.) |
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260 | { |
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261 | flagMaterialIsWater = true; |
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262 | densityWater = density; |
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263 | |
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264 | if (verboseLevel > 3) |
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265 | G4cout << "Water material is found with density(cm^-3)=" << density/(cm*cm*cm) << G4endl; |
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266 | } |
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267 | } |
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268 | } |
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269 | |
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270 | } |
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271 | } // if(numOfCouples>0) |
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272 | |
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273 | } // if (theCoupleTable) |
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274 | |
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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 | G4double G4DNABornIonisationModel::CrossSectionPerVolume(const G4Material*, |
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280 | const G4ParticleDefinition* particleDefinition, |
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281 | G4double ekin, |
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282 | G4double, |
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283 | G4double) |
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284 | { |
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285 | if (verboseLevel > 3) |
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286 | G4cout << "Calling CrossSectionPerVolume() of G4DNABornIonisationModel" << G4endl; |
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287 | |
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288 | if ( |
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289 | particleDefinition != G4Proton::ProtonDefinition() |
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290 | && |
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291 | particleDefinition != G4Electron::ElectronDefinition() |
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292 | ) |
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293 | |
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294 | return 0; |
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295 | |
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296 | // Calculate total cross section for model |
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297 | |
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298 | G4double lowLim = 0; |
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299 | G4double highLim = 0; |
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300 | G4double sigma=0; |
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301 | |
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302 | if (flagMaterialIsWater) |
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303 | { |
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304 | const G4String& particleName = particleDefinition->GetParticleName(); |
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305 | |
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306 | std::map< G4String,G4double,std::less<G4String> >::iterator pos1; |
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307 | pos1 = lowEnergyLimit.find(particleName); |
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308 | if (pos1 != lowEnergyLimit.end()) |
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309 | { |
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310 | lowLim = pos1->second; |
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311 | } |
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312 | |
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313 | std::map< G4String,G4double,std::less<G4String> >::iterator pos2; |
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314 | pos2 = highEnergyLimit.find(particleName); |
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315 | if (pos2 != highEnergyLimit.end()) |
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316 | { |
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317 | highLim = pos2->second; |
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318 | } |
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319 | |
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320 | if (ekin >= lowLim && ekin < highLim) |
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321 | { |
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322 | std::map< G4String,G4DNACrossSectionDataSet*,std::less<G4String> >::iterator pos; |
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323 | pos = tableData.find(particleName); |
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324 | |
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325 | if (pos != tableData.end()) |
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326 | { |
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327 | G4DNACrossSectionDataSet* table = pos->second; |
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328 | if (table != 0) |
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329 | { |
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330 | sigma = table->FindValue(ekin); |
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331 | } |
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332 | } |
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333 | else |
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334 | { |
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335 | G4Exception("G4DNABornIonisationModel::CrossSectionPerVolume: attempting to calculate cross section for wrong particle"); |
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336 | } |
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337 | } |
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338 | |
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339 | if (verboseLevel > 3) |
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340 | { |
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341 | G4cout << "---> Kinetic energy(eV)=" << ekin/eV << G4endl; |
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342 | G4cout << " - Cross section per water molecule (cm^2)=" << sigma/cm/cm << G4endl; |
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343 | G4cout << " - Cross section per water molecule (cm^-1)=" << sigma*densityWater/(1./cm) << G4endl; |
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344 | } |
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345 | |
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346 | } // if (waterMaterial) |
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347 | |
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348 | return sigma*densityWater; |
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349 | |
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350 | } |
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351 | |
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352 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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353 | |
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354 | void G4DNABornIonisationModel::SampleSecondaries(std::vector<G4DynamicParticle*>* fvect, |
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355 | const G4MaterialCutsCouple* /*couple*/, |
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356 | const G4DynamicParticle* particle, |
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357 | G4double, |
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358 | G4double) |
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359 | { |
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360 | |
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361 | if (verboseLevel > 3) |
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362 | G4cout << "Calling SampleSecondaries() of G4DNABornIonisationModel" << G4endl; |
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363 | |
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364 | G4double lowLim = 0; |
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365 | G4double highLim = 0; |
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366 | |
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367 | G4double k = particle->GetKineticEnergy(); |
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368 | |
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369 | const G4String& particleName = particle->GetDefinition()->GetParticleName(); |
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370 | |
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371 | std::map< G4String,G4double,std::less<G4String> >::iterator pos1; |
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372 | pos1 = lowEnergyLimit.find(particleName); |
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373 | |
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374 | if (pos1 != lowEnergyLimit.end()) |
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375 | { |
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376 | lowLim = pos1->second; |
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377 | } |
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378 | |
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379 | std::map< G4String,G4double,std::less<G4String> >::iterator pos2; |
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380 | pos2 = highEnergyLimit.find(particleName); |
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381 | |
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382 | if (pos2 != highEnergyLimit.end()) |
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383 | { |
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384 | highLim = pos2->second; |
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385 | } |
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386 | |
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387 | if (k >= lowLim && k < highLim) |
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388 | { |
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389 | G4ParticleMomentum primaryDirection = particle->GetMomentumDirection(); |
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390 | G4double particleMass = particle->GetDefinition()->GetPDGMass(); |
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391 | G4double totalEnergy = k + particleMass; |
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392 | G4double pSquare = k * (totalEnergy + particleMass); |
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393 | G4double totalMomentum = std::sqrt(pSquare); |
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394 | |
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395 | G4int ionizationShell = RandomSelect(k,particleName); |
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396 | |
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397 | G4double secondaryKinetic = RandomizeEjectedElectronEnergy(particle->GetDefinition(),k,ionizationShell); |
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398 | |
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399 | G4double bindingEnergy = waterStructure.IonisationEnergy(ionizationShell); |
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400 | |
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401 | G4double cosTheta = 0.; |
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402 | G4double phi = 0.; |
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403 | RandomizeEjectedElectronDirection(particle->GetDefinition(), k,secondaryKinetic, cosTheta, phi); |
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404 | |
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405 | G4double sinTheta = std::sqrt(1.-cosTheta*cosTheta); |
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406 | G4double dirX = sinTheta*std::cos(phi); |
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407 | G4double dirY = sinTheta*std::sin(phi); |
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408 | G4double dirZ = cosTheta; |
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409 | G4ThreeVector deltaDirection(dirX,dirY,dirZ); |
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410 | deltaDirection.rotateUz(primaryDirection); |
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411 | |
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412 | G4double deltaTotalMomentum = std::sqrt(secondaryKinetic*(secondaryKinetic + 2.*electron_mass_c2 )); |
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413 | |
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414 | G4double finalPx = totalMomentum*primaryDirection.x() - deltaTotalMomentum*deltaDirection.x(); |
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415 | G4double finalPy = totalMomentum*primaryDirection.y() - deltaTotalMomentum*deltaDirection.y(); |
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416 | G4double finalPz = totalMomentum*primaryDirection.z() - deltaTotalMomentum*deltaDirection.z(); |
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417 | G4double finalMomentum = std::sqrt(finalPx*finalPx + finalPy*finalPy + finalPz*finalPz); |
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418 | finalPx /= finalMomentum; |
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419 | finalPy /= finalMomentum; |
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420 | finalPz /= finalMomentum; |
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421 | |
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422 | G4ThreeVector direction; |
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423 | direction.set(finalPx,finalPy,finalPz); |
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424 | |
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425 | fParticleChangeForGamma->ProposeMomentumDirection(direction.unit()) ; |
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426 | fParticleChangeForGamma->SetProposedKineticEnergy(k-bindingEnergy-secondaryKinetic); |
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427 | fParticleChangeForGamma->ProposeLocalEnergyDeposit(bindingEnergy); |
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428 | |
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429 | G4DynamicParticle* dp = new G4DynamicParticle (G4Electron::Electron(),deltaDirection,secondaryKinetic) ; |
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430 | fvect->push_back(dp); |
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431 | } |
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432 | |
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433 | } |
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434 | |
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435 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo...... |
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436 | |
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437 | G4double G4DNABornIonisationModel::RandomizeEjectedElectronEnergy(G4ParticleDefinition* particleDefinition, |
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438 | G4double k, G4int shell) |
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439 | { |
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440 | if (particleDefinition == G4Electron::ElectronDefinition()) |
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441 | { |
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442 | G4double maximumEnergyTransfer=0.; |
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443 | if ((k+waterStructure.IonisationEnergy(shell))/2. > k) maximumEnergyTransfer=k; |
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444 | else maximumEnergyTransfer = (k+waterStructure.IonisationEnergy(shell))/2.; |
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445 | |
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446 | G4double crossSectionMaximum = 0.; |
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447 | for(G4double value=waterStructure.IonisationEnergy(shell); value<=maximumEnergyTransfer; value+=0.1*eV) |
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448 | { |
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449 | G4double differentialCrossSection = DifferentialCrossSection(particleDefinition, k/eV, value/eV, shell); |
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450 | if(differentialCrossSection >= crossSectionMaximum) crossSectionMaximum = differentialCrossSection; |
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451 | } |
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452 | |
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453 | G4double secondaryElectronKineticEnergy=0.; |
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454 | do |
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455 | { |
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456 | secondaryElectronKineticEnergy = G4UniformRand() * (maximumEnergyTransfer-waterStructure.IonisationEnergy(shell)); |
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457 | } while(G4UniformRand()*crossSectionMaximum > |
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458 | DifferentialCrossSection(particleDefinition, k/eV,(secondaryElectronKineticEnergy+waterStructure.IonisationEnergy(shell))/eV,shell)); |
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459 | |
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460 | return secondaryElectronKineticEnergy; |
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461 | |
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462 | } |
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463 | |
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464 | if (particleDefinition == G4Proton::ProtonDefinition()) |
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465 | { |
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466 | G4double maximumKineticEnergyTransfer = 4.* (electron_mass_c2 / proton_mass_c2) * k - (waterStructure.IonisationEnergy(shell)); |
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467 | |
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468 | G4double crossSectionMaximum = 0.; |
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469 | for (G4double value = waterStructure.IonisationEnergy(shell); |
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470 | value<=4.*waterStructure.IonisationEnergy(shell) ; |
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471 | value+=0.1*eV) |
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472 | { |
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473 | G4double differentialCrossSection = DifferentialCrossSection(particleDefinition, k/eV, value/eV, shell); |
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474 | if (differentialCrossSection >= crossSectionMaximum) crossSectionMaximum = differentialCrossSection; |
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475 | } |
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476 | |
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477 | G4double secondaryElectronKineticEnergy = 0.; |
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478 | do |
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479 | { |
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480 | secondaryElectronKineticEnergy = G4UniformRand() * maximumKineticEnergyTransfer; |
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481 | } while(G4UniformRand()*crossSectionMaximum >= |
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482 | DifferentialCrossSection(particleDefinition, k/eV,(secondaryElectronKineticEnergy+waterStructure.IonisationEnergy(shell))/eV,shell)); |
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483 | |
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484 | return secondaryElectronKineticEnergy; |
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485 | } |
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486 | |
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487 | return 0; |
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488 | } |
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489 | |
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490 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo...... |
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491 | |
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492 | void G4DNABornIonisationModel::RandomizeEjectedElectronDirection(G4ParticleDefinition* particleDefinition, |
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493 | G4double k, |
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494 | G4double secKinetic, |
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495 | G4double & cosTheta, |
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496 | G4double & phi ) |
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497 | { |
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498 | if (particleDefinition == G4Electron::ElectronDefinition()) |
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499 | { |
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500 | phi = twopi * G4UniformRand(); |
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501 | if (secKinetic < 50.*eV) cosTheta = (2.*G4UniformRand())-1.; |
---|
502 | else if (secKinetic <= 200.*eV) |
---|
503 | { |
---|
504 | if (G4UniformRand() <= 0.1) cosTheta = (2.*G4UniformRand())-1.; |
---|
505 | else cosTheta = G4UniformRand()*(std::sqrt(2.)/2); |
---|
506 | } |
---|
507 | else |
---|
508 | { |
---|
509 | G4double sin2O = (1.-secKinetic/k) / (1.+secKinetic/(2.*electron_mass_c2)); |
---|
510 | cosTheta = std::sqrt(1.-sin2O); |
---|
511 | } |
---|
512 | } |
---|
513 | |
---|
514 | if (particleDefinition == G4Proton::ProtonDefinition()) |
---|
515 | { |
---|
516 | G4double maxSecKinetic = 4.* (electron_mass_c2 / proton_mass_c2) * k; |
---|
517 | phi = twopi * G4UniformRand(); |
---|
518 | cosTheta = std::sqrt(secKinetic / maxSecKinetic); |
---|
519 | } |
---|
520 | } |
---|
521 | |
---|
522 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo...... |
---|
523 | |
---|
524 | double G4DNABornIonisationModel::DifferentialCrossSection(G4ParticleDefinition * particleDefinition, |
---|
525 | G4double k, |
---|
526 | G4double energyTransfer, |
---|
527 | G4int ionizationLevelIndex) |
---|
528 | { |
---|
529 | G4double sigma = 0.; |
---|
530 | |
---|
531 | if (energyTransfer >= waterStructure.IonisationEnergy(ionizationLevelIndex)) |
---|
532 | { |
---|
533 | G4double valueT1 = 0; |
---|
534 | G4double valueT2 = 0; |
---|
535 | G4double valueE21 = 0; |
---|
536 | G4double valueE22 = 0; |
---|
537 | G4double valueE12 = 0; |
---|
538 | G4double valueE11 = 0; |
---|
539 | |
---|
540 | G4double xs11 = 0; |
---|
541 | G4double xs12 = 0; |
---|
542 | G4double xs21 = 0; |
---|
543 | G4double xs22 = 0; |
---|
544 | |
---|
545 | if (particleDefinition == G4Electron::ElectronDefinition()) |
---|
546 | { |
---|
547 | // k should be in eV and energy transfer eV also |
---|
548 | |
---|
549 | std::vector<double>::iterator t2 = std::upper_bound(eTdummyVec.begin(),eTdummyVec.end(), k); |
---|
550 | |
---|
551 | std::vector<double>::iterator t1 = t2-1; |
---|
552 | |
---|
553 | // SI : the following condition avoids situations where energyTransfer >last vector element |
---|
554 | if (energyTransfer <= eVecm[(*t1)].back()) |
---|
555 | { |
---|
556 | std::vector<double>::iterator e12 = std::upper_bound(eVecm[(*t1)].begin(),eVecm[(*t1)].end(), energyTransfer); |
---|
557 | std::vector<double>::iterator e11 = e12-1; |
---|
558 | |
---|
559 | std::vector<double>::iterator e22 = std::upper_bound(eVecm[(*t2)].begin(),eVecm[(*t2)].end(), energyTransfer); |
---|
560 | std::vector<double>::iterator e21 = e22-1; |
---|
561 | |
---|
562 | valueT1 =*t1; |
---|
563 | valueT2 =*t2; |
---|
564 | valueE21 =*e21; |
---|
565 | valueE22 =*e22; |
---|
566 | valueE12 =*e12; |
---|
567 | valueE11 =*e11; |
---|
568 | |
---|
569 | xs11 = eDiffCrossSectionData[ionizationLevelIndex][valueT1][valueE11]; |
---|
570 | xs12 = eDiffCrossSectionData[ionizationLevelIndex][valueT1][valueE12]; |
---|
571 | xs21 = eDiffCrossSectionData[ionizationLevelIndex][valueT2][valueE21]; |
---|
572 | xs22 = eDiffCrossSectionData[ionizationLevelIndex][valueT2][valueE22]; |
---|
573 | } |
---|
574 | |
---|
575 | } |
---|
576 | |
---|
577 | if (particleDefinition == G4Proton::ProtonDefinition()) |
---|
578 | { |
---|
579 | // k should be in eV and energy transfer eV also |
---|
580 | std::vector<double>::iterator t2 = std::upper_bound(pTdummyVec.begin(),pTdummyVec.end(), k); |
---|
581 | std::vector<double>::iterator t1 = t2-1; |
---|
582 | |
---|
583 | std::vector<double>::iterator e12 = std::upper_bound(pVecm[(*t1)].begin(),pVecm[(*t1)].end(), energyTransfer); |
---|
584 | std::vector<double>::iterator e11 = e12-1; |
---|
585 | |
---|
586 | std::vector<double>::iterator e22 = std::upper_bound(pVecm[(*t2)].begin(),pVecm[(*t2)].end(), energyTransfer); |
---|
587 | std::vector<double>::iterator e21 = e22-1; |
---|
588 | |
---|
589 | valueT1 =*t1; |
---|
590 | valueT2 =*t2; |
---|
591 | valueE21 =*e21; |
---|
592 | valueE22 =*e22; |
---|
593 | valueE12 =*e12; |
---|
594 | valueE11 =*e11; |
---|
595 | |
---|
596 | xs11 = pDiffCrossSectionData[ionizationLevelIndex][valueT1][valueE11]; |
---|
597 | xs12 = pDiffCrossSectionData[ionizationLevelIndex][valueT1][valueE12]; |
---|
598 | xs21 = pDiffCrossSectionData[ionizationLevelIndex][valueT2][valueE21]; |
---|
599 | xs22 = pDiffCrossSectionData[ionizationLevelIndex][valueT2][valueE22]; |
---|
600 | |
---|
601 | } |
---|
602 | |
---|
603 | G4double xsProduct = xs11 * xs12 * xs21 * xs22; |
---|
604 | if (xsProduct != 0.) |
---|
605 | { |
---|
606 | sigma = QuadInterpolator( valueE11, valueE12, |
---|
607 | valueE21, valueE22, |
---|
608 | xs11, xs12, |
---|
609 | xs21, xs22, |
---|
610 | valueT1, valueT2, |
---|
611 | k, energyTransfer); |
---|
612 | } |
---|
613 | |
---|
614 | } |
---|
615 | |
---|
616 | return sigma; |
---|
617 | } |
---|
618 | |
---|
619 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo...... |
---|
620 | |
---|
621 | G4double G4DNABornIonisationModel::LogLogInterpolate(G4double e1, |
---|
622 | G4double e2, |
---|
623 | G4double e, |
---|
624 | G4double xs1, |
---|
625 | G4double xs2) |
---|
626 | { |
---|
627 | G4double a = (std::log10(xs2)-std::log10(xs1)) / (std::log10(e2)-std::log10(e1)); |
---|
628 | G4double b = std::log10(xs2) - a*std::log10(e2); |
---|
629 | G4double sigma = a*std::log10(e) + b; |
---|
630 | G4double value = (std::pow(10.,sigma)); |
---|
631 | return value; |
---|
632 | } |
---|
633 | |
---|
634 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo...... |
---|
635 | |
---|
636 | G4double G4DNABornIonisationModel::QuadInterpolator(G4double e11, G4double e12, |
---|
637 | G4double e21, G4double e22, |
---|
638 | G4double xs11, G4double xs12, |
---|
639 | G4double xs21, G4double xs22, |
---|
640 | G4double t1, G4double t2, |
---|
641 | G4double t, G4double e) |
---|
642 | { |
---|
643 | G4double interpolatedvalue1 = LogLogInterpolate(e11, e12, e, xs11, xs12); |
---|
644 | G4double interpolatedvalue2 = LogLogInterpolate(e21, e22, e, xs21, xs22); |
---|
645 | G4double value = LogLogInterpolate(t1, t2, t, interpolatedvalue1, interpolatedvalue2); |
---|
646 | return value; |
---|
647 | } |
---|
648 | |
---|
649 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo...... |
---|
650 | |
---|
651 | G4int G4DNABornIonisationModel::RandomSelect(G4double k, const G4String& particle ) |
---|
652 | { |
---|
653 | G4int level = 0; |
---|
654 | |
---|
655 | std::map< G4String,G4DNACrossSectionDataSet*,std::less<G4String> >::iterator pos; |
---|
656 | pos = tableData.find(particle); |
---|
657 | |
---|
658 | if (pos != tableData.end()) |
---|
659 | { |
---|
660 | G4DNACrossSectionDataSet* table = pos->second; |
---|
661 | |
---|
662 | if (table != 0) |
---|
663 | { |
---|
664 | G4double* valuesBuffer = new G4double[table->NumberOfComponents()]; |
---|
665 | const size_t n(table->NumberOfComponents()); |
---|
666 | size_t i(n); |
---|
667 | G4double value = 0.; |
---|
668 | |
---|
669 | while (i>0) |
---|
670 | { |
---|
671 | i--; |
---|
672 | valuesBuffer[i] = table->GetComponent(i)->FindValue(k); |
---|
673 | value += valuesBuffer[i]; |
---|
674 | } |
---|
675 | |
---|
676 | value *= G4UniformRand(); |
---|
677 | |
---|
678 | i = n; |
---|
679 | |
---|
680 | while (i > 0) |
---|
681 | { |
---|
682 | i--; |
---|
683 | |
---|
684 | if (valuesBuffer[i] > value) |
---|
685 | { |
---|
686 | delete[] valuesBuffer; |
---|
687 | return i; |
---|
688 | } |
---|
689 | value -= valuesBuffer[i]; |
---|
690 | } |
---|
691 | |
---|
692 | if (valuesBuffer) delete[] valuesBuffer; |
---|
693 | |
---|
694 | } |
---|
695 | } |
---|
696 | else |
---|
697 | { |
---|
698 | G4Exception("G4DNABornIonisationModel::RandomSelect attempting to calculate cross section for wrong particle"); |
---|
699 | } |
---|
700 | |
---|
701 | return level; |
---|
702 | } |
---|
703 | |
---|