1 | // |
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2 | // ******************************************************************** |
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3 | // * License and Disclaimer * |
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4 | // * * |
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5 | // * The Geant4 software is copyright of the Copyright Holders of * |
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6 | // * the Geant4 Collaboration. It is provided under the terms and * |
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7 | // * conditions of the Geant4 Software License, included in the file * |
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8 | // * LICENSE and available at http://cern.ch/geant4/license . These * |
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9 | // * include a list of copyright holders. * |
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10 | // * * |
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11 | // * Neither the authors of this software system, nor their employing * |
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12 | // * institutes,nor the agencies providing financial support for this * |
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13 | // * work make any representation or warranty, express or implied, * |
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14 | // * regarding this software system or assume any liability for its * |
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15 | // * use. Please see the license in the file LICENSE and URL above * |
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16 | // * for the full disclaimer and the limitation of liability. * |
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17 | // * * |
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18 | // * This code implementation is the result of the scientific and * |
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19 | // * technical work of the GEANT4 collaboration. * |
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20 | // * By using, copying, modifying or distributing the software (or * |
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21 | // * any work based on the software) you agree to acknowledge its * |
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22 | // * use in resulting scientific publications, and indicate your * |
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23 | // * acceptance of all terms of the Geant4 Software license. * |
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24 | // ******************************************************************** |
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25 | // |
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26 | // Thermal Neutron Scattering |
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27 | // Koi, Tatsumi (SCCS/SLAC) |
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28 | // |
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29 | // Class Description |
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30 | // Cross Sections for a high precision (based on evaluated data |
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31 | // libraries) description of themal neutron scattering below 4 eV; |
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32 | // Based on Thermal neutron scattering files |
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33 | // from the evaluated nuclear data files ENDF/B-VI, Release2 |
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34 | // To be used in your physics list in case you need this physics. |
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35 | // In this case you want to register an object of this class with |
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36 | // the corresponding process. |
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37 | // Class Description - End |
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38 | |
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39 | // 15-Nov-06 First implementation is done by T. Koi (SLAC/SCCS) |
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40 | // 070625 implement clearCurrentXSData to fix memory leaking by T. Koi |
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41 | |
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42 | #include "G4NeutronHPThermalScatteringData.hh" |
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43 | #include "G4Neutron.hh" |
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44 | #include "G4ElementTable.hh" |
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45 | //#include "G4NeutronHPData.hh" |
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46 | |
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47 | |
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48 | |
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49 | G4NeutronHPThermalScatteringData::G4NeutronHPThermalScatteringData() |
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50 | { |
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51 | // Upper limit of neutron energy |
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52 | emax = 4*eV; |
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53 | |
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54 | indexOfThermalElement.clear(); |
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55 | |
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56 | names = new G4NeutronHPThermalScatteringNames(); |
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57 | |
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58 | BuildPhysicsTable( *G4Neutron::Neutron() ); |
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59 | } |
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60 | |
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61 | |
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62 | |
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63 | G4NeutronHPThermalScatteringData::~G4NeutronHPThermalScatteringData() |
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64 | { |
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65 | |
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66 | clearCurrentXSData(); |
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67 | |
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68 | delete names; |
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69 | } |
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70 | |
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71 | |
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72 | void G4NeutronHPThermalScatteringData::clearCurrentXSData() |
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73 | { |
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74 | std::map< G4int , std::map< G4double , G4NeutronHPVector* >* >::iterator it; |
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75 | std::map< G4double , G4NeutronHPVector* >::iterator itt; |
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76 | |
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77 | for ( it = coherent.begin() ; it != coherent.end() ; it++ ) |
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78 | { |
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79 | if ( it->second != NULL ) |
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80 | { |
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81 | for ( itt = it->second->begin() ; itt != it->second->end() ; itt++ ) |
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82 | { |
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83 | delete itt->second; |
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84 | } |
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85 | } |
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86 | delete it->second; |
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87 | } |
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88 | |
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89 | for ( it = incoherent.begin() ; it != incoherent.end() ; it++ ) |
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90 | { |
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91 | if ( it->second != NULL ) |
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92 | { |
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93 | for ( itt = it->second->begin() ; itt != it->second->end() ; itt++ ) |
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94 | { |
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95 | delete itt->second; |
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96 | } |
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97 | } |
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98 | delete it->second; |
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99 | } |
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100 | |
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101 | for ( it = inelastic.begin() ; it != inelastic.end() ; it++ ) |
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102 | { |
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103 | if ( it->second != NULL ) |
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104 | { |
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105 | for ( itt = it->second->begin() ; itt != it->second->end() ; itt++ ) |
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106 | { |
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107 | delete itt->second; |
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108 | } |
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109 | } |
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110 | delete it->second; |
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111 | } |
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112 | |
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113 | coherent.clear(); |
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114 | incoherent.clear(); |
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115 | inelastic.clear(); |
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116 | |
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117 | } |
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118 | |
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119 | |
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120 | |
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121 | G4bool G4NeutronHPThermalScatteringData::IsApplicable( const G4DynamicParticle* aP , const G4Element* anEle ) |
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122 | { |
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123 | G4bool result = false; |
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124 | |
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125 | G4double eKin = aP->GetKineticEnergy(); |
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126 | // Check energy |
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127 | if ( eKin < emax ) |
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128 | { |
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129 | // Check Particle Species |
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130 | if ( aP->GetDefinition() == G4Neutron::Neutron() ) |
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131 | { |
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132 | // anEle is one of Thermal elements |
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133 | G4int ie = (G4int) anEle->GetIndex(); |
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134 | std::vector < G4int >::iterator it; |
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135 | for ( it = indexOfThermalElement.begin() ; it != indexOfThermalElement.end() ; it++ ) |
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136 | { |
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137 | if ( ie == *it ) return true; |
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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 | if ( names->IsThisThermalElement ( anEle->GetName() ) ) |
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144 | { |
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145 | // Check energy and projectile species |
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146 | G4double eKin = aP->GetKineticEnergy(); |
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147 | if ( eKin < emax && aP->GetDefinition() == G4Neutron::Neutron() ) result = true; |
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148 | } |
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149 | */ |
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150 | return result; |
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151 | } |
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152 | |
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153 | |
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154 | void G4NeutronHPThermalScatteringData::BuildPhysicsTable(const G4ParticleDefinition& aP) |
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155 | { |
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156 | |
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157 | if ( &aP != G4Neutron::Neutron() ) |
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158 | throw G4HadronicException(__FILE__, __LINE__, "Attempt to use NeutronHP data for particles other than neutrons!!!"); |
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159 | |
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160 | indexOfThermalElement.clear(); |
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161 | |
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162 | clearCurrentXSData(); |
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163 | |
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164 | static const G4ElementTable* theElementTable = G4Element::GetElementTable(); |
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165 | size_t numberOfElements = G4Element::GetNumberOfElements(); |
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166 | size_t numberOfThermalElements = 0; |
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167 | for ( size_t i = 0 ; i < numberOfElements ; i++ ) |
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168 | { |
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169 | if ( names->IsThisThermalElement ( (*theElementTable)[i]->GetName() ) ) |
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170 | { |
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171 | indexOfThermalElement.push_back( i ); |
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172 | numberOfThermalElements++; |
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173 | } |
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174 | } |
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175 | |
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176 | // Read Cross Section Data files |
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177 | |
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178 | G4String dirName; |
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179 | if ( !getenv( "G4NEUTRONHPDATA" ) ) |
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180 | throw G4HadronicException(__FILE__, __LINE__, "Please setenv G4NEUTRONHPDATA to point to the neutron cross-section files."); |
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181 | G4String baseName = getenv( "G4NEUTRONHPDATA" ); |
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182 | |
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183 | dirName = baseName + "/ThermalScattering"; |
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184 | |
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185 | G4String ndl_filename; |
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186 | G4String name; |
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187 | |
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188 | for ( size_t i = 0 ; i < numberOfThermalElements ; i++ ) |
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189 | { |
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190 | ndl_filename = names->GetTS_NDL_Name( (*theElementTable)[ indexOfThermalElement[ i ] ]->GetName() ); |
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191 | |
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192 | // Coherent |
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193 | name = dirName + "/Coherent/CrossSection/" + ndl_filename; |
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194 | std::map< G4double , G4NeutronHPVector* >* coh_amapTemp_EnergyCross = readData( name ); |
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195 | coherent.insert ( std::pair < G4int , std::map< G4double , G4NeutronHPVector* >* > ( indexOfThermalElement[ i ] , coh_amapTemp_EnergyCross ) ); |
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196 | |
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197 | // Incoherent |
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198 | name = dirName + "/Incoherent/CrossSection/" + ndl_filename; |
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199 | std::map< G4double , G4NeutronHPVector* >* incoh_amapTemp_EnergyCross = readData( name ); |
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200 | incoherent.insert ( std::pair < G4int , std::map< G4double , G4NeutronHPVector* >* > ( indexOfThermalElement[ i ] , incoh_amapTemp_EnergyCross ) ); |
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201 | |
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202 | // Inelastic |
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203 | name = dirName + "/Inelastic/CrossSection/" + ndl_filename; |
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204 | std::map< G4double , G4NeutronHPVector* >* inela_amapTemp_EnergyCross = readData( name ); |
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205 | inelastic.insert ( std::pair < G4int , std::map< G4double , G4NeutronHPVector* >* > ( indexOfThermalElement[ i ] , inela_amapTemp_EnergyCross ) ); |
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206 | } |
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207 | |
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208 | } |
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209 | |
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210 | |
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211 | |
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212 | std::map< G4double , G4NeutronHPVector* >* G4NeutronHPThermalScatteringData::readData ( G4String name ) |
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213 | { |
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214 | |
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215 | std::map< G4double , G4NeutronHPVector* >* aData = new std::map< G4double , G4NeutronHPVector* >; |
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216 | |
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217 | std::ifstream theChannel( name.c_str() ); |
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218 | |
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219 | //G4cout << "G4NeutronHPThermalScatteringData " << name << G4endl; |
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220 | |
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221 | G4int dummy; |
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222 | while ( theChannel >> dummy ) // MF |
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223 | { |
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224 | theChannel >> dummy; // MT |
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225 | G4double temp; |
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226 | theChannel >> temp; |
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227 | G4NeutronHPVector* anEnergyCross = new G4NeutronHPVector; |
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228 | G4int nData; |
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229 | theChannel >> nData; |
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230 | anEnergyCross->Init ( theChannel , nData , eV , barn ); |
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231 | aData->insert ( std::pair < G4double , G4NeutronHPVector* > ( temp , anEnergyCross ) ); |
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232 | } |
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233 | theChannel.close(); |
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234 | |
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235 | return aData; |
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236 | |
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237 | } |
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238 | |
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239 | |
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240 | |
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241 | void G4NeutronHPThermalScatteringData::DumpPhysicsTable( const G4ParticleDefinition& aP ) |
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242 | { |
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243 | if( &aP != G4Neutron::Neutron() ) |
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244 | throw G4HadronicException(__FILE__, __LINE__, "Attempt to use NeutronHP data for particles other than neutrons!!!"); |
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245 | // G4cout << "G4NeutronHPThermalScatteringData::DumpPhysicsTable still to be implemented"<<G4endl; |
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246 | } |
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247 | |
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248 | //#include "G4Nucleus.hh" |
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249 | //#include "G4NucleiPropertiesTable.hh" |
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250 | //#include "G4Neutron.hh" |
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251 | //#include "G4Electron.hh" |
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252 | |
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253 | |
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254 | |
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255 | G4double G4NeutronHPThermalScatteringData::GetCrossSection( const G4DynamicParticle* aP , const G4Element*anE , G4double aT ) |
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256 | { |
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257 | G4double result = 0; |
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258 | |
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259 | G4int iele = anE->GetIndex(); |
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260 | |
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261 | G4double Xcoh = GetX ( aP , aT , coherent.find(iele)->second ); |
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262 | G4double Xincoh = GetX ( aP , aT , incoherent.find(iele)->second ); |
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263 | G4double Xinela = GetX ( aP , aT , inelastic.find(iele)->second ); |
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264 | |
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265 | result = Xcoh + Xincoh + Xinela; |
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266 | |
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267 | //G4cout << "G4NeutronHPThermalScatteringData::GetCrossSection Tot= " << result/barn << " Coherent= " << Xcoh/barn << " Incoherent= " << Xincoh/barn << " Inelastic= " << Xinela/barn << G4endl; |
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268 | |
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269 | return result; |
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270 | } |
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271 | |
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272 | |
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273 | |
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274 | G4double G4NeutronHPThermalScatteringData::GetInelasticCrossSection( const G4DynamicParticle* aP , const G4Element*anE , G4double aT ) |
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275 | { |
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276 | G4double result = 0; |
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277 | G4int iele = anE->GetIndex(); |
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278 | result = GetX ( aP , aT , inelastic.find(iele)->second ); |
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279 | return result; |
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280 | } |
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281 | |
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282 | |
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283 | |
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284 | G4double G4NeutronHPThermalScatteringData::GetCoherentCrossSection( const G4DynamicParticle* aP , const G4Element*anE , G4double aT ) |
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285 | { |
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286 | G4double result = 0; |
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287 | G4int iele = anE->GetIndex(); |
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288 | result = GetX ( aP , aT , coherent.find(iele)->second ); |
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289 | return result; |
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290 | } |
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291 | |
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292 | |
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293 | |
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294 | G4double G4NeutronHPThermalScatteringData::GetIncoherentCrossSection( const G4DynamicParticle* aP , const G4Element*anE , G4double aT ) |
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295 | { |
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296 | G4double result = 0; |
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297 | G4int iele = anE->GetIndex(); |
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298 | result = GetX ( aP , aT , incoherent.find(iele)->second ); |
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299 | return result; |
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300 | } |
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301 | |
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302 | |
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303 | |
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304 | |
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305 | G4double G4NeutronHPThermalScatteringData::GetX ( const G4DynamicParticle* aP, G4double aT , std::map < G4double , G4NeutronHPVector* >* amapTemp_EnergyCross ) |
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306 | { |
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307 | G4double result = 0; |
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308 | if ( amapTemp_EnergyCross->size() == 0 ) return result; |
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309 | |
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310 | std::map< G4double , G4NeutronHPVector* >::iterator it; |
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311 | for ( it = amapTemp_EnergyCross->begin() ; it != amapTemp_EnergyCross->end() ; it++ ) |
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312 | { |
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313 | if ( aT < it->first ) break; |
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314 | } |
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315 | if ( it == amapTemp_EnergyCross->begin() ) it++; // lower than first |
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316 | else if ( it == amapTemp_EnergyCross->end() ) it--; // upper than last |
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317 | |
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318 | G4double eKinetic = aP->GetKineticEnergy(); |
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319 | |
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320 | G4double TH = it->first; |
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321 | G4double XH = it->second->GetXsec ( eKinetic ); |
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322 | |
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323 | //G4cout << "G4NeutronHPThermalScatteringData::GetX TH " << TH << " E " << eKinetic << " XH " << XH << G4endl; |
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324 | |
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325 | it--; |
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326 | G4double TL = it->first; |
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327 | G4double XL = it->second->GetXsec ( eKinetic ); |
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328 | |
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329 | //G4cout << "G4NeutronHPThermalScatteringData::GetX TL " << TL << " E " << eKinetic << " XL " << XL << G4endl; |
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330 | |
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331 | if ( TH == TL ) |
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332 | throw G4HadronicException(__FILE__, __LINE__, "Thermal Scattering Data Error!"); |
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333 | |
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334 | G4double T = aT; |
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335 | G4double X = ( XH - XL ) / ( TH - TL ) * ( T - TL ) + XL; |
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336 | result = X; |
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337 | |
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338 | return result; |
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339 | } |
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