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2 | // ******************************************************************** |
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3 | // * License and Disclaimer * |
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15 | // * use. Please see the license in the file LICENSE and URL above * |
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18 | // * This code implementation is the result of the scientific and * |
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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 | // 070523 Try to limit sum of secondary photon energy while keeping distribution shape |
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31 | // in the of nDiscrete = 1 an nPartial = 1. Most case are satisfied. |
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32 | // T. Koi |
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33 | // 070606 Add Partial case by T. Koi |
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34 | // 070618 fix memory leaking by T. Koi |
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35 | // |
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36 | // there is a lot of unused (and undebugged) code in this file. Kept for the moment just in case. @@ |
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37 | |
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38 | #include "G4NeutronHPPhotonDist.hh" |
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39 | #include "G4NeutronHPLegendreStore.hh" |
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40 | #include "G4Electron.hh" |
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41 | #include "G4Poisson.hh" |
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42 | |
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43 | #include <numeric> |
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44 | |
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45 | G4bool G4NeutronHPPhotonDist::InitMean(std::ifstream & aDataFile) |
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46 | { |
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47 | G4bool result = true; |
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48 | if(aDataFile >> repFlag) |
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49 | { |
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50 | aDataFile >> targetMass; |
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51 | if(repFlag==1) |
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52 | { |
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53 | // multiplicities |
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54 | aDataFile >> nDiscrete; |
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55 | disType = new G4int[nDiscrete]; |
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56 | energy = new G4double[nDiscrete]; |
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57 | actualMult = new G4int[nDiscrete]; |
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58 | theYield = new G4NeutronHPVector[nDiscrete]; |
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59 | for (G4int i=0; i<nDiscrete; i++) |
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60 | { |
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61 | aDataFile >> disType[i]>>energy[i]; |
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62 | energy[i]*=eV; |
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63 | theYield[i].Init(aDataFile, eV); |
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64 | } |
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65 | } |
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66 | else if(repFlag == 2) |
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67 | { |
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68 | aDataFile >> theInternalConversionFlag; |
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69 | aDataFile >> theBaseEnergy; |
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70 | theBaseEnergy*=eV; |
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71 | aDataFile >> theInternalConversionFlag; |
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72 | aDataFile >> nGammaEnergies; |
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73 | theLevelEnergies = new G4double[nGammaEnergies]; |
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74 | theTransitionProbabilities = new G4double[nGammaEnergies]; |
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75 | if(theInternalConversionFlag == 2) thePhotonTransitionFraction = new G4double[nGammaEnergies]; |
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76 | for(G4int ii=0; ii<nGammaEnergies; ii++) |
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77 | { |
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78 | if(theInternalConversionFlag == 1) |
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79 | { |
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80 | aDataFile >> theLevelEnergies[ii] >> theTransitionProbabilities[ii]; |
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81 | theLevelEnergies[ii]*=eV; |
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82 | } |
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83 | else if(theInternalConversionFlag == 2) |
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84 | { |
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85 | aDataFile >> theLevelEnergies[ii] >> theTransitionProbabilities[ii] >> thePhotonTransitionFraction[ii]; |
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86 | theLevelEnergies[ii]*=eV; |
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87 | } |
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88 | else |
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89 | { |
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90 | throw G4HadronicException(__FILE__, __LINE__, "G4NeutronHPPhotonDist: Unknown conversion flag"); |
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91 | } |
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92 | } |
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93 | // Note, that this is equivalent to using the 'Gamma' classes. |
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94 | // throw G4HadronicException(__FILE__, __LINE__, "G4NeutronHPPhotonDist: Transition probability array not sampled for the moment."); |
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95 | } |
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96 | else |
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97 | { |
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98 | G4cout << "Data representation in G4NeutronHPPhotonDist: "<<repFlag<<G4endl; |
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99 | throw G4HadronicException(__FILE__, __LINE__, "G4NeutronHPPhotonDist: This data representation is not implemented."); |
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100 | } |
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101 | } |
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102 | else |
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103 | { |
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104 | result = false; |
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105 | } |
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106 | return result; |
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107 | } |
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108 | |
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109 | void G4NeutronHPPhotonDist::InitAngular(std::ifstream & aDataFile) |
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110 | { |
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111 | G4int i, ii; |
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112 | //angular distributions |
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113 | aDataFile >> isoFlag; |
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114 | if (isoFlag != 1) |
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115 | { |
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116 | aDataFile >> tabulationType >> nDiscrete2 >> nIso; |
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117 | theShells = new G4double[nDiscrete2]; |
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118 | theGammas = new G4double[nDiscrete2]; |
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119 | for (i=0; i< nIso; i++) // isotropic photons |
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120 | { |
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121 | aDataFile >> theGammas[i] >> theShells[i]; |
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122 | theGammas[i]*=eV; |
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123 | theShells[i]*=eV; |
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124 | } |
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125 | nNeu = new G4int [nDiscrete2-nIso]; |
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126 | if(tabulationType==1)theLegendre=new G4NeutronHPLegendreTable *[nDiscrete2-nIso]; |
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127 | if(tabulationType==2)theAngular =new G4NeutronHPAngularP *[nDiscrete2-nIso]; |
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128 | for(i=nIso; i< nDiscrete2; i++) |
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129 | { |
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130 | if(tabulationType==1) |
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131 | { |
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132 | aDataFile >> theGammas[i] >> theShells[i] >> nNeu[i-nIso]; |
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133 | theGammas[i]*=eV; |
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134 | theShells[i]*=eV; |
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135 | theLegendre[i-nIso]=new G4NeutronHPLegendreTable[nNeu[i-nIso]]; |
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136 | theLegendreManager.Init(aDataFile); |
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137 | for (ii=0; ii<nNeu[i-nIso]; ii++) |
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138 | { |
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139 | theLegendre[i-nIso][ii].Init(aDataFile); |
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140 | } |
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141 | } |
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142 | else if(tabulationType==2) |
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143 | { |
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144 | aDataFile >> theGammas[i] >> theShells[i] >> nNeu[i-nIso]; |
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145 | theGammas[i]*=eV; |
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146 | theShells[i]*=eV; |
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147 | theAngular[i-nIso]=new G4NeutronHPAngularP[nNeu[i-nIso]]; |
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148 | for (ii=0; ii<nNeu[i-nIso]; ii++) |
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149 | { |
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150 | theAngular[i-nIso][ii].Init(aDataFile); |
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151 | } |
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152 | } |
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153 | else |
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154 | { |
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155 | G4cout << "tabulation type: tabulationType"<<G4endl; |
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156 | throw G4HadronicException(__FILE__, __LINE__, "cannot deal with this tabulation type for angular distributions."); |
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157 | } |
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158 | } |
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159 | } |
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160 | } |
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161 | |
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162 | |
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163 | void G4NeutronHPPhotonDist::InitEnergies(std::ifstream & aDataFile) |
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164 | { |
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165 | G4int i, energyDistributionsNeeded = 0; |
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166 | for (i=0; i<nDiscrete; i++) |
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167 | { |
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168 | if( disType[i]==1) energyDistributionsNeeded =1; |
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169 | } |
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170 | if(!energyDistributionsNeeded) return; |
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171 | aDataFile >> nPartials; |
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172 | distribution = new G4int[nPartials]; |
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173 | probs = new G4NeutronHPVector[nPartials]; |
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174 | partials = new G4NeutronHPPartial * [nPartials]; |
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175 | G4int nen; |
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176 | G4int dummy; |
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177 | for (i=0; i<nPartials; i++) |
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178 | { |
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179 | aDataFile >> dummy; |
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180 | probs[i].Init(aDataFile, eV); |
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181 | aDataFile >> nen; |
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182 | partials[i] = new G4NeutronHPPartial(nen); |
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183 | partials[i]->InitInterpolation(aDataFile); |
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184 | partials[i]->Init(aDataFile); |
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185 | } |
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186 | } |
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187 | |
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188 | void G4NeutronHPPhotonDist::InitPartials(std::ifstream & aDataFile) |
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189 | { |
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190 | //G4cout << "G4NeutronHPPhotonDist::InitPartials " << G4endl; |
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191 | aDataFile >> nDiscrete >> targetMass; |
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192 | if(nDiscrete != 1) |
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193 | { |
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194 | theTotalXsec.Init(aDataFile, eV); |
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195 | } |
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196 | G4int i; |
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197 | theGammas = new G4double[nDiscrete]; |
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198 | theShells = new G4double[nDiscrete]; |
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199 | isPrimary = new G4int[nDiscrete]; |
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200 | disType = new G4int[nDiscrete]; |
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201 | thePartialXsec = new G4NeutronHPVector[nDiscrete]; |
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202 | for(i=0; i<nDiscrete; i++) |
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203 | { |
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204 | aDataFile>>theGammas[i]>>theShells[i]>>isPrimary[i]>>disType[i]; |
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205 | theGammas[i]*=eV; |
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206 | theShells[i]*=eV; |
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207 | thePartialXsec[i].Init(aDataFile, eV); |
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208 | } |
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209 | |
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210 | //G4cout << "G4NeutronHPPhotonDist::InitPartials Test " << G4endl; |
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211 | //G4cout << "G4NeutronHPPhotonDist::InitPartials nDiscrete " << nDiscrete << G4endl; |
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212 | //G4NeutronHPVector* aHP = new G4NeutronHPVector; |
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213 | //aHP->Check(1); |
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214 | } |
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215 | |
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216 | G4ReactionProductVector * G4NeutronHPPhotonDist::GetPhotons(G4double anEnergy) |
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217 | { |
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218 | |
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219 | //G4cout << "G4NeutronHPPhotonDist::GetPhotons repFlag " << repFlag << G4endl; |
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220 | // the partial cross-section case is not in this yet. @@@@ << 070601 TK add partial |
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221 | G4int i, ii, iii; |
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222 | G4int nSecondaries = 0; |
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223 | G4ReactionProductVector * thePhotons = new G4ReactionProductVector; |
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224 | if(repFlag==1) |
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225 | { |
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226 | G4double current=0; |
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227 | for(i=0; i<nDiscrete; i++) |
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228 | { |
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229 | current = theYield[i].GetY(anEnergy); |
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230 | actualMult[i] = G4Poisson(current); // max cut-off still missing @@@ |
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231 | if(nDiscrete==1&¤t<1.0001) |
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232 | { |
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233 | actualMult[i] = static_cast<G4int>(current); |
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234 | if(current<1) |
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235 | { |
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236 | actualMult[i] = 0; |
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237 | if(G4UniformRand()<current) actualMult[i] = 1; |
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238 | } |
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239 | } |
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240 | nSecondaries += actualMult[i]; |
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241 | } |
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242 | //G4cout << "nSecondaries " << nSecondaries << " anEnergy " << anEnergy/eV << G4endl; |
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243 | for(i=0;i<nSecondaries;i++) |
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244 | { |
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245 | G4ReactionProduct * theOne = new G4ReactionProduct; |
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246 | theOne->SetDefinition(G4Gamma::Gamma()); |
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247 | thePhotons->push_back(theOne); |
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248 | } |
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249 | G4int count=0; |
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250 | |
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251 | /* |
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252 | G4double totalCascadeEnergy = 0.; |
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253 | G4double lastCascadeEnergy = 0.; |
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254 | G4double eGamm = 0; |
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255 | G4int maxEnergyIndex = 0; |
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256 | */ |
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257 | //Gcout << "nDiscrete " << nDiscrete << " nPartials " << nPartials << G4endl; |
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258 | //3456 |
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259 | if ( nDiscrete == 1 && nPartials == 1 ) |
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260 | { |
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261 | if ( actualMult[ 0 ] > 0 ) |
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262 | { |
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263 | if ( disType[0] == 1 ) // continuum |
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264 | { |
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265 | |
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266 | /* |
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267 | for(ii=0; ii< actualMult[0]; ii++) |
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268 | { |
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269 | |
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270 | G4double sum=0, run=0; |
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271 | for(iii=0; iii<nPartials; iii++) sum+=probs[iii].GetY(anEnergy); |
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272 | G4double random = G4UniformRand(); |
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273 | G4int theP = 0; |
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274 | for(iii=0; iii<nPartials; iii++) |
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275 | { |
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276 | run+=probs[iii].GetY(anEnergy); |
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277 | theP = iii; |
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278 | if(random<run/sum) break; |
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279 | } |
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280 | if(theP==nPartials) theP=nPartials-1; // das sortiert J aus. |
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281 | sum=0; |
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282 | G4NeutronHPVector * temp; |
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283 | temp = partials[theP]->GetY(anEnergy); //@@@ look at, seems fishy |
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284 | // Looking for TotalCascdeEnergy or LastMaxEnergy |
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285 | if (ii == 0) |
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286 | { |
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287 | maxEnergyIndex = temp->GetVectorLength()-1; |
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288 | totalCascadeEnergy = temp->GetX(maxEnergyIndex); |
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289 | lastCascadeEnergy = totalCascadeEnergy; |
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290 | } |
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291 | lastCascadeEnergy -= eGamm; |
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292 | if (ii != actualMult[i]-1) eGamm = temp->SampleWithMax(lastCascadeEnergy); |
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293 | else eGamm = lastCascadeEnergy; |
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294 | thePhotons->operator[](count)->SetKineticEnergy(eGamm); |
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295 | delete temp; |
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296 | |
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297 | } |
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298 | */ |
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299 | G4NeutronHPVector * temp; |
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300 | temp = partials[ 0 ]->GetY(anEnergy); //@@@ look at, seems fishy |
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301 | G4double maximumE = temp->GetX( temp->GetVectorLength()-1 ); // This is an assumption. |
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302 | |
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303 | //G4cout << "start " << actualMult[ 0 ] << " maximumE " << maximumE/eV << G4endl; |
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304 | |
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305 | std::vector< G4double > photons_e_best( actualMult[ 0 ] , 0.0 ); |
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306 | G4double best = DBL_MAX; |
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307 | G4int maxTry = 1000; |
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308 | for ( G4int j = 0 ; j < maxTry ; j++ ) |
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309 | { |
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310 | std::vector< G4double > photons_e( actualMult[ 0 ] , 0.0 ); |
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311 | for ( std::vector< G4double >::iterator |
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312 | it = photons_e.begin() ; it < photons_e.end() ; it++ ) |
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313 | { |
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314 | *it = temp->Sample(); |
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315 | } |
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316 | if ( std::accumulate( photons_e.begin() , photons_e.end() , 0.0 ) > maximumE ) |
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317 | { |
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318 | if ( std::accumulate( photons_e.begin() , photons_e.end() , 0.0 ) < best ) |
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319 | photons_e_best = photons_e; |
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320 | continue; |
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321 | } |
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322 | else |
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323 | { |
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324 | for ( std::vector< G4double >::iterator |
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325 | it = photons_e.begin() ; it < photons_e.end() ; it++ ) |
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326 | { |
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327 | thePhotons->operator[](count)->SetKineticEnergy( *it ); |
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328 | } |
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329 | //G4cout << "OK " << actualMult[0] << " j " << j << " total photons E " |
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330 | // << std::accumulate( photons_e.begin() , photons_e.end() , 0.0 )/eV << " ratio " << std::accumulate( photons_e.begin() , photons_e.end() , 0.0 ) / maximumE |
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331 | // << G4endl; |
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332 | |
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333 | break; |
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334 | } |
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335 | G4cout << "NeutronHPPhotonDist could not find fitted energy set for multiplicity of " << actualMult[0] << "." << G4endl; |
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336 | G4cout << "NeutronHPPhotonDist will use the best set." << G4endl; |
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337 | for ( std::vector< G4double >::iterator |
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338 | it = photons_e_best.begin() ; it < photons_e_best.end() ; it++ ) |
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339 | { |
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340 | thePhotons->operator[](count)->SetKineticEnergy( *it ); |
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341 | } |
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342 | //G4cout << "Not Good " << actualMult[0] << " j " << j << " total photons E " |
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343 | // << best/eV << " ratio " << best / maximumE |
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344 | // << G4endl; |
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345 | } |
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346 | // TKDB |
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347 | delete temp; |
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348 | } |
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349 | else // discrete |
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350 | { |
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351 | thePhotons->operator[](count)->SetKineticEnergy(energy[i]); |
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352 | } |
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353 | count++; |
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354 | if(count > nSecondaries) throw G4HadronicException(__FILE__, __LINE__, "G4NeutronHPPhotonDist::GetPhotons inconsistancy"); |
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355 | } |
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356 | |
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357 | } |
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358 | else |
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359 | { |
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360 | for(i=0; i<nDiscrete; i++) |
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361 | { |
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362 | for(ii=0; ii< actualMult[i]; ii++) |
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363 | { |
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364 | if(disType[i]==1) // continuum |
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365 | { |
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366 | G4double sum=0, run=0; |
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367 | for(iii=0; iii<nPartials; iii++) sum+=probs[iii].GetY(anEnergy); |
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368 | G4double random = G4UniformRand(); |
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369 | G4int theP = 0; |
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370 | for(iii=0; iii<nPartials; iii++) |
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371 | { |
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372 | run+=probs[iii].GetY(anEnergy); |
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373 | theP = iii; |
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374 | if(random<run/sum) break; |
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375 | } |
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376 | if(theP==nPartials) theP=nPartials-1; // das sortiert J aus. |
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377 | sum=0; |
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378 | G4NeutronHPVector * temp; |
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379 | temp = partials[theP]->GetY(anEnergy); //@@@ look at, seems fishy |
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380 | G4double eGamm = temp->Sample(); |
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381 | thePhotons->operator[](count)->SetKineticEnergy(eGamm); |
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382 | delete temp; |
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383 | } |
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384 | else // discrete |
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385 | { |
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386 | thePhotons->operator[](count)->SetKineticEnergy(energy[i]); |
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387 | } |
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388 | count++; |
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389 | if(count > nSecondaries) throw G4HadronicException(__FILE__, __LINE__, "G4NeutronHPPhotonDist::GetPhotons inconsistancy"); |
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390 | } |
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391 | } |
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392 | } |
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393 | // now do the angular distributions... |
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394 | if( isoFlag == 1) |
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395 | { |
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396 | for (i=0; i< nSecondaries; i++) |
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397 | { |
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398 | G4double costheta = 2.*G4UniformRand()-1; |
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399 | G4double theta = std::acos(costheta); |
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400 | G4double phi = twopi*G4UniformRand(); |
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401 | G4double sinth = std::sin(theta); |
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402 | G4double en = thePhotons->operator[](i)->GetTotalEnergy(); |
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403 | G4ThreeVector temp(en*sinth*std::cos(phi), en*sinth*std::sin(phi), en*std::cos(theta) ); |
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404 | thePhotons->operator[](i)->SetMomentum( temp ) ; |
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405 | // G4cout << "Isotropic distribution in PhotonDist"<<temp<<G4endl; |
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406 | } |
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407 | } |
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408 | else |
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409 | { |
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410 | for(i=0; i<nSecondaries; i++) |
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411 | { |
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412 | G4double currentEnergy = thePhotons->operator[](i)->GetTotalEnergy(); |
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413 | for(ii=0; ii<nDiscrete2; ii++) |
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414 | { |
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415 | if (std::abs(currentEnergy-theGammas[ii])<0.1*keV) break; |
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416 | } |
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417 | if(ii==nDiscrete2) ii--; // fix for what seems an (file12 vs file 14) inconsistancy found in the ENDF 7N14 data. @@ |
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418 | if(ii<nIso) |
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419 | { |
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420 | // isotropic distribution |
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421 | G4double theta = pi*G4UniformRand(); |
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422 | G4double phi = twopi*G4UniformRand(); |
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423 | G4double sinth = std::sin(theta); |
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424 | G4double en = thePhotons->operator[](i)->GetTotalEnergy(); |
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425 | G4ThreeVector tempVector(en*sinth*std::cos(phi), en*sinth*std::sin(phi), en*std::cos(theta) ); |
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426 | thePhotons->operator[](i)->SetMomentum( tempVector ) ; |
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427 | } |
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428 | else if(tabulationType==1) |
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429 | { |
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430 | // legendre polynomials |
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431 | G4int it(0); |
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432 | for (iii=0; iii<nNeu[ii-nIso]; iii++) // find the neutron energy |
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433 | { |
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434 | it = iii; |
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435 | if(theLegendre[ii-nIso][iii].GetEnergy()>anEnergy) |
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436 | break; |
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437 | } |
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438 | G4NeutronHPLegendreStore aStore(2); |
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439 | aStore.SetCoeff(1, &(theLegendre[ii-nIso][it])); |
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440 | aStore.SetCoeff(0, &(theLegendre[ii-nIso][it-1])); |
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441 | G4double cosTh = aStore.SampleMax(anEnergy); |
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442 | G4double theta = std::acos(cosTh); |
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443 | G4double phi = twopi*G4UniformRand(); |
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444 | G4double sinth = std::sin(theta); |
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445 | G4double en = thePhotons->operator[](i)->GetTotalEnergy(); |
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446 | G4ThreeVector tempVector(en*sinth*std::cos(phi), en*sinth*std::sin(phi), en*std::cos(theta) ); |
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447 | thePhotons->operator[](i)->SetMomentum( tempVector ) ; |
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448 | } |
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449 | else |
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450 | { |
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451 | // tabulation of probabilities. |
---|
452 | G4int it(0); |
---|
453 | for (iii=0; iii<nNeu[ii-nIso]; iii++) // find the neutron energy |
---|
454 | { |
---|
455 | it = iii; |
---|
456 | if(theAngular[ii-nIso][iii].GetEnergy()>anEnergy) |
---|
457 | break; |
---|
458 | } |
---|
459 | G4double costh = theAngular[ii-nIso][it].GetCosTh(); // no interpolation yet @@ |
---|
460 | G4double theta = std::acos(costh); |
---|
461 | G4double phi = twopi*G4UniformRand(); |
---|
462 | G4double sinth = std::sin(theta); |
---|
463 | G4double en = thePhotons->operator[](i)->GetTotalEnergy(); |
---|
464 | G4ThreeVector tmpVector(en*sinth*std::cos(phi), en*sinth*std::sin(phi), en*costh ); |
---|
465 | thePhotons->operator[](i)->SetMomentum( tmpVector ) ; |
---|
466 | } |
---|
467 | } |
---|
468 | } |
---|
469 | } |
---|
470 | else if(repFlag == 2) |
---|
471 | { |
---|
472 | G4double * running = new G4double[nGammaEnergies]; |
---|
473 | running[0]=theTransitionProbabilities[0]; |
---|
474 | G4int i; |
---|
475 | for(i=1; i<nGammaEnergies; i++) |
---|
476 | { |
---|
477 | running[i]=running[i-1]+theTransitionProbabilities[i]; |
---|
478 | } |
---|
479 | G4double random = G4UniformRand(); |
---|
480 | G4int it=0; |
---|
481 | for(i=0; i<nGammaEnergies; i++) |
---|
482 | { |
---|
483 | it = i; |
---|
484 | if(random < running[i]/running[nGammaEnergies-1]) break; |
---|
485 | } |
---|
486 | delete [] running; |
---|
487 | G4double totalEnergy = theBaseEnergy - theLevelEnergies[it]; |
---|
488 | G4ReactionProduct * theOne = new G4ReactionProduct; |
---|
489 | theOne->SetDefinition(G4Gamma::Gamma()); |
---|
490 | random = G4UniformRand(); |
---|
491 | if(theInternalConversionFlag==2 && random>thePhotonTransitionFraction[it]) |
---|
492 | { |
---|
493 | theOne->SetDefinition(G4Electron::Electron()); |
---|
494 | } |
---|
495 | theOne->SetTotalEnergy(totalEnergy); |
---|
496 | if( isoFlag == 1) |
---|
497 | { |
---|
498 | G4double costheta = 2.*G4UniformRand()-1; |
---|
499 | G4double theta = std::acos(costheta); |
---|
500 | G4double phi = twopi*G4UniformRand(); |
---|
501 | G4double sinth = std::sin(theta); |
---|
502 | G4double en = theOne->GetTotalEnergy(); |
---|
503 | G4ThreeVector temp(en*sinth*std::cos(phi), en*sinth*std::sin(phi), en*std::cos(theta) ); |
---|
504 | theOne->SetMomentum( temp ) ; |
---|
505 | } |
---|
506 | else |
---|
507 | { |
---|
508 | G4double currentEnergy = theOne->GetTotalEnergy(); |
---|
509 | for(ii=0; ii<nDiscrete2; ii++) |
---|
510 | { |
---|
511 | if (std::abs(currentEnergy-theGammas[ii])<0.1*keV) break; |
---|
512 | } |
---|
513 | if(ii==nDiscrete2) ii--; // fix for what seems an (file12 vs file 14) inconsistancy found in the ENDF 7N14 data. @@ |
---|
514 | if(ii<nIso) |
---|
515 | { |
---|
516 | // isotropic distribution |
---|
517 | G4double theta = pi*G4UniformRand(); |
---|
518 | G4double phi = twopi*G4UniformRand(); |
---|
519 | G4double sinth = std::sin(theta); |
---|
520 | G4double en = theOne->GetTotalEnergy(); |
---|
521 | G4ThreeVector tempVector(en*sinth*std::cos(phi), en*sinth*std::sin(phi), en*std::cos(theta) ); |
---|
522 | theOne->SetMomentum( tempVector ) ; |
---|
523 | } |
---|
524 | else if(tabulationType==1) |
---|
525 | { |
---|
526 | // legendre polynomials |
---|
527 | G4int it(0); |
---|
528 | for (iii=0; iii<nNeu[ii-nIso]; iii++) // find the neutron energy |
---|
529 | { |
---|
530 | it = iii; |
---|
531 | if(theLegendre[ii-nIso][iii].GetEnergy()>anEnergy) |
---|
532 | break; |
---|
533 | } |
---|
534 | G4NeutronHPLegendreStore aStore(2); |
---|
535 | aStore.SetCoeff(1, &(theLegendre[ii-nIso][it])); |
---|
536 | aStore.SetCoeff(0, &(theLegendre[ii-nIso][it-1])); |
---|
537 | G4double cosTh = aStore.SampleMax(anEnergy); |
---|
538 | G4double theta = std::acos(cosTh); |
---|
539 | G4double phi = twopi*G4UniformRand(); |
---|
540 | G4double sinth = std::sin(theta); |
---|
541 | G4double en = theOne->GetTotalEnergy(); |
---|
542 | G4ThreeVector tempVector(en*sinth*std::cos(phi), en*sinth*std::sin(phi), en*std::cos(theta) ); |
---|
543 | theOne->SetMomentum( tempVector ) ; |
---|
544 | } |
---|
545 | else |
---|
546 | { |
---|
547 | // tabulation of probabilities. |
---|
548 | G4int it(0); |
---|
549 | for (iii=0; iii<nNeu[ii-nIso]; iii++) // find the neutron energy |
---|
550 | { |
---|
551 | it = iii; |
---|
552 | if(theAngular[ii-nIso][iii].GetEnergy()>anEnergy) |
---|
553 | break; |
---|
554 | } |
---|
555 | G4double costh = theAngular[ii-nIso][it].GetCosTh(); // no interpolation yet @@ |
---|
556 | G4double theta = std::acos(costh); |
---|
557 | G4double phi = twopi*G4UniformRand(); |
---|
558 | G4double sinth = std::sin(theta); |
---|
559 | G4double en = theOne->GetTotalEnergy(); |
---|
560 | G4ThreeVector tmpVector(en*sinth*std::cos(phi), en*sinth*std::sin(phi), en*costh ); |
---|
561 | theOne->SetMomentum( tmpVector ) ; |
---|
562 | } |
---|
563 | } |
---|
564 | thePhotons->push_back(theOne); |
---|
565 | } |
---|
566 | else if( repFlag==0 ) |
---|
567 | { |
---|
568 | |
---|
569 | // TK add |
---|
570 | if ( thePartialXsec == 0 ) |
---|
571 | { |
---|
572 | //G4cout << "repFlag is 0, but no PartialXsec data" << G4endl; |
---|
573 | //G4cout << "This is not support yet." << G4endl; |
---|
574 | return thePhotons; |
---|
575 | } |
---|
576 | |
---|
577 | // Partial Case |
---|
578 | |
---|
579 | G4ReactionProduct * theOne = new G4ReactionProduct; |
---|
580 | theOne->SetDefinition( G4Gamma::Gamma() ); |
---|
581 | thePhotons->push_back( theOne ); |
---|
582 | |
---|
583 | // Energy |
---|
584 | |
---|
585 | //G4cout << "Partial Case nDiscrete " << nDiscrete << G4endl; |
---|
586 | G4double sum = 0.0; |
---|
587 | std::vector < G4double > dif( nDiscrete , 0.0 ); |
---|
588 | for ( G4int i = 0 ; i < nDiscrete ; i++ ) |
---|
589 | { |
---|
590 | G4double x = thePartialXsec[ i ].GetXsec( anEnergy ); // x in barn |
---|
591 | if ( x > 0 ) |
---|
592 | { |
---|
593 | sum += x; |
---|
594 | } |
---|
595 | dif [ i ] = sum; |
---|
596 | //G4cout << "i " << i << ", x " << x << ", dif " << dif [ i ] << G4endl; |
---|
597 | } |
---|
598 | |
---|
599 | G4double rand = G4UniformRand(); |
---|
600 | |
---|
601 | G4int iphoton = 0; |
---|
602 | for ( G4int i = 0 ; i < nDiscrete ; i++ ) |
---|
603 | { |
---|
604 | G4double y = rand*sum; |
---|
605 | if ( dif [ i ] > y ) |
---|
606 | { |
---|
607 | iphoton = i; |
---|
608 | break; |
---|
609 | } |
---|
610 | } |
---|
611 | //G4cout << "iphoton " << iphoton << G4endl; |
---|
612 | //G4cout << "photon energy " << theGammas[ iphoton ] /eV << G4endl; |
---|
613 | |
---|
614 | // Angle |
---|
615 | G4double cosTheta = 0.0; // mu |
---|
616 | |
---|
617 | if ( isoFlag == 1 ) |
---|
618 | { |
---|
619 | |
---|
620 | // Isotropic Case |
---|
621 | |
---|
622 | cosTheta = 2.*G4UniformRand()-1; |
---|
623 | |
---|
624 | } |
---|
625 | else |
---|
626 | { |
---|
627 | |
---|
628 | if ( iphoton < nIso ) |
---|
629 | { |
---|
630 | |
---|
631 | // still Isotropic |
---|
632 | |
---|
633 | cosTheta = 2.*G4UniformRand()-1; |
---|
634 | |
---|
635 | } |
---|
636 | else |
---|
637 | { |
---|
638 | |
---|
639 | //G4cout << "Not Isotropic and isoFlag " << isoFlag << G4endl; |
---|
640 | //G4cout << "tabulationType " << tabulationType << G4endl; |
---|
641 | //G4cout << "nDiscrete2 " << nDiscrete2 << G4endl; |
---|
642 | //G4cout << "nIso " << nIso << G4endl; |
---|
643 | //G4cout << "size of nNeu " << nDiscrete2-nIso << G4endl; |
---|
644 | //G4cout << "nNeu[iphoton-nIso] " << nNeu[iphoton-nIso] << G4endl; |
---|
645 | |
---|
646 | if ( tabulationType == 1 ) |
---|
647 | { |
---|
648 | // legendre polynomials |
---|
649 | |
---|
650 | G4int iangle = 0; |
---|
651 | for ( G4int j = 0 ; j < nNeu [ iphoton - nIso ] ; j++ ) |
---|
652 | { |
---|
653 | iangle = j; |
---|
654 | if ( theLegendre[ iphoton - nIso ][ j ].GetEnergy() > anEnergy ) break; |
---|
655 | } |
---|
656 | |
---|
657 | G4NeutronHPLegendreStore aStore( 2 ); |
---|
658 | aStore.SetCoeff( 1 , &( theLegendre[ iphoton - nIso ][ iangle ] ) ); |
---|
659 | aStore.SetCoeff( 0 , &( theLegendre[ iphoton - nIso ][ iangle - 1 ] ) ); |
---|
660 | |
---|
661 | cosTheta = aStore.SampleMax( anEnergy ); |
---|
662 | |
---|
663 | } |
---|
664 | else if ( tabulationType == 2 ) |
---|
665 | { |
---|
666 | |
---|
667 | // tabulation of probabilities. |
---|
668 | |
---|
669 | G4int iangle = 0; |
---|
670 | for ( G4int j = 0 ; j < nNeu [ iphoton - nIso ] ; j++ ) |
---|
671 | { |
---|
672 | iangle = j; |
---|
673 | if ( theAngular[ iphoton - nIso ][ j ].GetEnergy() > anEnergy ) break; |
---|
674 | } |
---|
675 | |
---|
676 | cosTheta = theAngular[iphoton-nIso][ iangle ].GetCosTh(); // no interpolation yet @@ |
---|
677 | |
---|
678 | } |
---|
679 | } |
---|
680 | } |
---|
681 | |
---|
682 | // Set |
---|
683 | G4double phi = twopi*G4UniformRand(); |
---|
684 | G4double theta = std::acos( cosTheta ); |
---|
685 | G4double sinTheta = std::sin( theta ); |
---|
686 | |
---|
687 | G4double photonE = theGammas[ iphoton ]; |
---|
688 | G4ThreeVector direction ( sinTheta*std::cos( phi ) , sinTheta * std::sin( phi ) , cosTheta ); |
---|
689 | G4ThreeVector photonP = photonE * direction; |
---|
690 | thePhotons->operator[]( 0 )->SetMomentum( photonP ) ; |
---|
691 | |
---|
692 | } |
---|
693 | else |
---|
694 | { |
---|
695 | delete thePhotons; |
---|
696 | thePhotons = 0; // no gamma data available; some work needed @@@@@@@ |
---|
697 | } |
---|
698 | return thePhotons; |
---|
699 | } |
---|
700 | |
---|