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2 | // ******************************************************************** |
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3 | // * License and Disclaimer * |
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4 | // * * |
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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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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 | // neutron_hp -- source file |
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27 | // J.P. Wellisch, Nov-1996 |
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28 | // A prototype of the low energy neutron transport model. |
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29 | // |
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30 | #include "G4NeutronHPFSFissionFS.hh" |
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31 | #include "G4ReactionProduct.hh" |
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32 | #include "G4Nucleus.hh" |
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33 | #include "G4Proton.hh" |
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34 | #include "G4Deuteron.hh" |
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35 | #include "G4Triton.hh" |
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36 | #include "G4Alpha.hh" |
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37 | #include "G4ThreeVector.hh" |
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38 | #include "G4Poisson.hh" |
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39 | #include "G4LorentzVector.hh" |
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40 | #include "G4NeutronHPDataUsed.hh" |
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41 | |
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42 | void G4NeutronHPFSFissionFS::Init (G4double A, G4double Z, G4String & dirName, G4String & ) |
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43 | { |
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44 | G4String tString = "/FS/"; |
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45 | G4bool dbool; |
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46 | G4NeutronHPDataUsed aFile = theNames.GetName(static_cast<G4int>(A), static_cast<G4int>(Z), dirName, tString, dbool); |
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47 | G4String filename = aFile.GetName(); |
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48 | if(!dbool) |
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49 | { |
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50 | hasAnyData = false; |
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51 | hasFSData = false; |
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52 | hasXsec = false; |
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53 | return; |
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54 | } |
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55 | std::ifstream theData(filename, std::ios::in); |
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56 | |
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57 | // here it comes |
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58 | G4int infoType, dataType; |
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59 | hasFSData = false; |
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60 | while (theData >> infoType) |
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61 | { |
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62 | hasFSData = true; |
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63 | theData >> dataType; |
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64 | switch(infoType) |
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65 | { |
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66 | case 1: |
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67 | if(dataType==4) theNeutronAngularDis.Init(theData); |
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68 | if(dataType==5) thePromptNeutronEnDis.Init(theData); |
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69 | if(dataType==12) theFinalStatePhotons.InitMean(theData); |
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70 | if(dataType==14) theFinalStatePhotons.InitAngular(theData); |
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71 | if(dataType==15) theFinalStatePhotons.InitEnergies(theData); |
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72 | break; |
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73 | case 2: |
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74 | if(dataType==1) theFinalStateNeutrons.InitMean(theData); |
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75 | break; |
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76 | case 3: |
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77 | if(dataType==1) theFinalStateNeutrons.InitDelayed(theData); |
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78 | if(dataType==5) theDelayedNeutronEnDis.Init(theData); |
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79 | break; |
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80 | case 4: |
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81 | if(dataType==1) theFinalStateNeutrons.InitPrompt(theData); |
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82 | break; |
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83 | case 5: |
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84 | if(dataType==1) theEnergyRelease.Init(theData); |
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85 | break; |
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86 | default: |
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87 | G4cout << "G4NeutronHPFSFissionFS::Init: unknown data type"<<dataType<<G4endl; |
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88 | throw G4HadronicException(__FILE__, __LINE__, "G4NeutronHPFSFissionFS::Init: unknown data type"); |
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89 | break; |
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90 | } |
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91 | } |
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92 | targetMass = theFinalStateNeutrons.GetTargetMass(); |
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93 | theData.close(); |
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94 | } |
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95 | |
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96 | |
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97 | G4DynamicParticleVector * G4NeutronHPFSFissionFS::ApplyYourself(G4int nPrompt, |
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98 | G4int nDelayed, G4double * theDecayConst) |
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99 | { |
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100 | G4int i; |
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101 | G4DynamicParticleVector * aResult = new G4DynamicParticleVector; |
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102 | G4ReactionProduct boosted; |
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103 | boosted.Lorentz(theNeutron, theTarget); |
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104 | G4double eKinetic = boosted.GetKineticEnergy(); |
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105 | |
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106 | // Build neutrons |
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107 | G4ReactionProduct * theNeutrons = new G4ReactionProduct[nPrompt+nDelayed]; |
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108 | for(i=0; i<nPrompt+nDelayed; i++) |
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109 | { |
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110 | theNeutrons[i].SetDefinition(G4Neutron::Neutron()); |
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111 | } |
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112 | |
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113 | // sample energies |
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114 | G4int it, dummy; |
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115 | G4double tempE; |
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116 | for(i=0; i<nPrompt; i++) |
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117 | { |
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118 | tempE = thePromptNeutronEnDis.Sample(eKinetic, dummy); // energy distribution (file5) always in lab |
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119 | theNeutrons[i].SetKineticEnergy(tempE); |
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120 | } |
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121 | for(i=nPrompt; i<nPrompt+nDelayed; i++) |
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122 | { |
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123 | theNeutrons[i].SetKineticEnergy(theDelayedNeutronEnDis.Sample(eKinetic, it)); // dito |
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124 | if(it==0) theNeutrons[i].SetKineticEnergy(thePromptNeutronEnDis.Sample(eKinetic, dummy)); |
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125 | theDecayConst[i-nPrompt] = theFinalStateNeutrons.GetDecayConstant(it); // this is returned |
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126 | } |
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127 | |
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128 | // sample neutron angular distribution |
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129 | for(i=0; i<nPrompt+nDelayed; i++) |
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130 | { |
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131 | theNeutronAngularDis.SampleAndUpdate(theNeutrons[i]); // angular comes back in lab automatically |
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132 | } |
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133 | |
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134 | // already in lab. Add neutrons to dynamic particle vector |
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135 | for(i=0; i<nPrompt+nDelayed; i++) |
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136 | { |
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137 | G4DynamicParticle * it = new G4DynamicParticle; |
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138 | it->SetDefinition(theNeutrons[i].GetDefinition()); |
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139 | it->SetMomentum(theNeutrons[i].GetMomentum()); |
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140 | aResult->push_back(it); |
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141 | } |
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142 | delete [] theNeutrons; |
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143 | // return the result |
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144 | return aResult; |
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145 | } |
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146 | |
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147 | void G4NeutronHPFSFissionFS::SampleNeutronMult(G4int&all, G4int&Prompt, G4int&delayed, G4double eKinetic, G4int off) |
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148 | { |
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149 | G4double promptNeutronMulti = 0; |
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150 | promptNeutronMulti = theFinalStateNeutrons.GetPrompt(eKinetic); |
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151 | G4double delayedNeutronMulti = 0; |
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152 | delayedNeutronMulti = theFinalStateNeutrons.GetDelayed(eKinetic); |
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153 | |
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154 | if(delayedNeutronMulti==0&&promptNeutronMulti==0) |
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155 | { |
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156 | Prompt = 0; |
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157 | delayed = 0; |
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158 | G4double totalNeutronMulti = theFinalStateNeutrons.GetMean(eKinetic); |
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159 | all = G4Poisson(totalNeutronMulti-off); |
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160 | all += off; |
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161 | } |
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162 | else |
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163 | { |
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164 | Prompt = G4Poisson(promptNeutronMulti-off); |
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165 | Prompt += off; |
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166 | delayed = G4Poisson(delayedNeutronMulti); |
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167 | all = Prompt+delayed; |
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168 | } |
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169 | } |
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170 | |
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171 | G4DynamicParticleVector * G4NeutronHPFSFissionFS::GetPhotons() |
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172 | { |
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173 | // sample photons |
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174 | G4ReactionProductVector * temp; |
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175 | G4ReactionProduct boosted; |
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176 | // the photon distributions are in the Nucleus rest frame. |
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177 | boosted.Lorentz(theNeutron, theTarget); |
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178 | G4double anEnergy = boosted.GetKineticEnergy(); |
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179 | temp = theFinalStatePhotons.GetPhotons(anEnergy); |
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180 | if(temp == 0) { return 0; } |
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181 | |
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182 | // lorentz transform, and add photons to final state |
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183 | unsigned int i; |
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184 | G4DynamicParticleVector * result = new G4DynamicParticleVector; |
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185 | for(i=0; i<temp->size(); i++) |
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186 | { |
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187 | // back to lab |
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188 | temp->operator[](i)->Lorentz(*(temp->operator[](i)), -1.*theTarget); |
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189 | G4DynamicParticle * theOne = new G4DynamicParticle; |
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190 | theOne->SetDefinition(temp->operator[](i)->GetDefinition()); |
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191 | theOne->SetMomentum(temp->operator[](i)->GetMomentum()); |
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192 | result->push_back(theOne); |
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193 | delete temp->operator[](i); |
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194 | } |
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195 | delete temp; |
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196 | return result; |
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197 | } |
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