1 | // |
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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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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 | // |
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27 | // 12.08.06 V.Ivanchenko - first implementation |
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28 | // 22.01.07 V.Ivanchenko - add GetIsoZACrossSection |
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29 | // 05.03.07 V.Ivanchenko - use G4NucleonNuclearCrossSection |
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30 | // 06.03.07 V.Ivanchenko - add Initialise function |
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31 | // |
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32 | // |
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33 | |
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34 | |
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35 | #include "G4UInelasticCrossSection.hh" |
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36 | |
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37 | #include "G4ParticleTable.hh" |
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38 | #include "G4GlauberGribovCrossSection.hh" |
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39 | #include "G4NucleonNuclearCrossSection.hh" |
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40 | #include "G4UPiNuclearCrossSection.hh" |
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41 | #include "G4HadronCrossSections.hh" |
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42 | #include "G4ParticleDefinition.hh" |
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43 | #include "G4Element.hh" |
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44 | #include "G4Proton.hh" |
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45 | #include "G4Neutron.hh" |
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46 | #include "G4PionPlus.hh" |
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47 | #include "G4PionMinus.hh" |
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48 | #include "G4NistManager.hh" |
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49 | |
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50 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo...... |
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51 | |
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52 | G4UInelasticCrossSection::G4UInelasticCrossSection(const G4ParticleDefinition* p) |
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53 | { |
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54 | hasGlauber = false; |
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55 | thEnergy = 100.*GeV; |
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56 | fGlauber = new G4GlauberGribovCrossSection(); |
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57 | fGheisha = G4HadronCrossSections::Instance(); |
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58 | fNucleon = 0; |
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59 | fUPi = 0; |
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60 | if(p == G4Proton::Proton() || p == G4Neutron::Neutron()) |
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61 | fNucleon = new G4NucleonNuclearCrossSection(); |
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62 | else if(p == G4PionPlus::PionPlus() || p == G4PionMinus::PionMinus()) |
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63 | fUPi = new G4UPiNuclearCrossSection(); |
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64 | verboseLevel = 0; |
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65 | Initialise(p); |
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66 | } |
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67 | |
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68 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo...... |
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69 | |
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70 | G4UInelasticCrossSection::~G4UInelasticCrossSection() |
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71 | { |
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72 | delete fGlauber; |
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73 | if(fNucleon) delete fNucleon; |
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74 | if(fUPi) delete fUPi; |
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75 | } |
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76 | |
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77 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo...... |
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78 | |
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79 | G4bool G4UInelasticCrossSection::IsApplicable(const G4DynamicParticle* dp, |
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80 | const G4Element* elm) |
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81 | { |
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82 | return IsZAApplicable(dp, elm->GetZ(), elm->GetN()); |
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83 | } |
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84 | |
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85 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo...... |
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86 | |
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87 | G4bool G4UInelasticCrossSection::IsZAApplicable(const G4DynamicParticle* dp, |
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88 | G4double Z, G4double A) |
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89 | { |
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90 | G4bool res = false; |
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91 | if(fNucleon || fUPi) res = true; |
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92 | else res = fGheisha->IsApplicable(dp, Z, A); |
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93 | if(verboseLevel > 1) |
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94 | G4cout << "G4UInelasticCrossSection::IsApplicable for " |
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95 | << dp->GetDefinition()->GetParticleName() |
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96 | << " Ekin(GeV)= " << dp->GetKineticEnergy() |
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97 | << G4endl; |
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98 | return res; |
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99 | } |
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100 | |
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101 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo...... |
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102 | |
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103 | G4double G4UInelasticCrossSection::GetCrossSection(const G4DynamicParticle* dp, |
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104 | const G4Element* elm, |
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105 | G4double temp) |
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106 | { |
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107 | return GetIsoZACrossSection(dp, elm->GetZ(), elm->GetN(), temp); |
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108 | } |
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109 | |
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110 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo...... |
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111 | |
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112 | G4double G4UInelasticCrossSection::GetIsoZACrossSection(const G4DynamicParticle* dp, |
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113 | G4double Z, |
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114 | G4double A, |
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115 | G4double) |
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116 | { |
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117 | G4double cross = 0.0; |
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118 | G4double ekin = dp->GetKineticEnergy(); |
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119 | G4int iz = G4int(Z + 0.5); |
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120 | if(iz > 92) iz = 92; |
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121 | |
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122 | // proton and neutron |
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123 | if(fNucleon) { |
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124 | if(iz == 1) cross = fGheisha->GetInelasticCrossSection(dp, Z, A); |
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125 | else if(ekin > thEnergy) { |
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126 | cross = theFac[iz]*fGlauber->GetInelasticGlauberGribov(dp, Z, A); |
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127 | } else { |
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128 | cross = fNucleon->GetIsoZACrossSection(dp, Z, A); |
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129 | } |
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130 | |
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131 | // pions |
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132 | } else if(fUPi) { |
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133 | if(iz == 1) cross = fGheisha->GetInelasticCrossSection(dp, Z, A); |
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134 | else if(ekin > thEnergy) { |
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135 | cross = theFac[iz]*fGlauber->GetInelasticGlauberGribov(dp, Z, A); |
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136 | } else { |
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137 | cross = fUPi->GetInelasticCrossSection(dp, Z, A); |
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138 | } |
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139 | |
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140 | //others |
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141 | } else { |
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142 | if(hasGlauber && ekin > thEnergy) { |
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143 | cross = theFac[iz]*fGlauber->GetInelasticGlauberGribov(dp, Z, A); |
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144 | } else if(fGheisha->IsApplicable(dp, Z, A)){ |
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145 | cross = fGheisha->GetInelasticCrossSection(dp, Z, A); |
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146 | } |
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147 | } |
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148 | |
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149 | if(verboseLevel > 1) |
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150 | G4cout << "G4UInelasticCrossSection::GetCrossSection for " |
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151 | << dp->GetDefinition()->GetParticleName() |
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152 | << " Ekin(GeV)= " << dp->GetKineticEnergy() |
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153 | << " in nucleus Z= " << Z << " A= " << A |
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154 | << " XS(b)= " << cross/barn |
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155 | << G4endl; |
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156 | |
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157 | return cross; |
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158 | } |
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159 | |
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160 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo...... |
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161 | |
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162 | void G4UInelasticCrossSection::BuildPhysicsTable(const G4ParticleDefinition&) |
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163 | { |
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164 | } |
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165 | |
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166 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo...... |
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167 | |
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168 | void G4UInelasticCrossSection::DumpPhysicsTable(const G4ParticleDefinition&) |
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169 | { |
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170 | G4cout << "G4UInelasticCrossSection:"<<G4endl; |
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171 | } |
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172 | |
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173 | |
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174 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo...... |
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175 | |
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176 | void G4UInelasticCrossSection::Initialise(const G4ParticleDefinition* p) |
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177 | { |
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178 | G4ParticleDefinition* part = const_cast<G4ParticleDefinition*>(p); |
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179 | G4ThreeVector mom(0.0,0.0,1.0); |
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180 | G4DynamicParticle dp(part, mom, thEnergy); |
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181 | |
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182 | G4NistManager* nist = G4NistManager::Instance(); |
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183 | G4double A = nist->GetAtomicMassAmu(2); |
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184 | |
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185 | if(fGlauber->IsZAApplicable(&dp, 2.0, A)) { |
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186 | hasGlauber = true; |
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187 | |
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188 | if(verboseLevel > 0) G4cout << "### G4UInelasticCrossSection::Initialise for " |
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189 | << p->GetParticleName() << G4endl; |
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190 | G4double csup, csdn; |
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191 | for(G4int iz=2; iz<93; iz++) { |
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192 | |
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193 | G4double Z = G4double(iz); |
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194 | A = nist->GetAtomicMassAmu(iz); |
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195 | csup = fGlauber->GetInelasticGlauberGribov(&dp, Z, A); |
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196 | |
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197 | // proton and neutron |
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198 | if(fNucleon) { |
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199 | csdn = fNucleon->GetIsoZACrossSection(&dp, Z, A); |
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200 | |
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201 | // pions |
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202 | } else if(fUPi) { |
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203 | csdn = fUPi->GetInelasticCrossSection(&dp, Z, A); |
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204 | |
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205 | // other |
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206 | } else if(fGheisha->IsApplicable(&dp, Z, A)) { |
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207 | csdn = fGheisha->GetInelasticCrossSection(&dp, Z, A); |
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208 | |
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209 | } else { |
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210 | csdn = csup; |
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211 | } |
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212 | theFac[iz] = csdn/csup; |
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213 | if(verboseLevel > 0) G4cout << "Z= " << Z << " A= " << A |
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214 | << " factor= " << theFac[iz] << G4endl; |
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215 | } |
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216 | } |
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217 | } |
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218 | |
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219 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo...... |
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220 | |
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221 | |
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