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24 | // ******************************************************************** |
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25 | // |
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26 | // $Id: G4BGGPionInelasticXS.cc,v 1.1 2007/03/13 15:19:30 vnivanch Exp $ |
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27 | // GEANT4 tag $Name: $ |
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28 | // |
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29 | // ------------------------------------------------------------------- |
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30 | // |
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31 | // GEANT4 Class file |
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32 | // |
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33 | // |
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34 | // File name: G4BGGPionInelasticXS |
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35 | // |
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36 | // Author: Vladimir Ivanchenko |
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37 | // |
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38 | // Creation date: 01.10.2003 |
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39 | // Modifications: |
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40 | // |
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41 | // |
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42 | // ------------------------------------------------------------------- |
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43 | // |
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44 | |
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45 | #include "G4BGGPionInelasticXS.hh" |
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46 | #include "G4GlauberGribovCrossSection.hh" |
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47 | #include "G4UPiNuclearCrossSection.hh" |
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48 | #include "G4PionPlus.hh" |
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49 | #include "G4PionMinus.hh" |
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50 | #include "G4NistManager.hh" |
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51 | |
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52 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo...... |
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53 | |
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54 | G4BGGPionInelasticXS::G4BGGPionInelasticXS(const G4ParticleDefinition* p) |
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55 | { |
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56 | verboseLevel = 0; |
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57 | thEnergy = 100.*GeV; |
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58 | if(p == G4PionPlus::PionPlus() || p == G4PionMinus::PionMinus()) { |
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59 | fPion = new G4UPiNuclearCrossSection(); |
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60 | fGlauber = new G4GlauberGribovCrossSection(); |
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61 | particle = p; |
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62 | Initialise(); |
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63 | } else { |
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64 | fPion = 0; |
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65 | fGlauber = 0; |
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66 | particle = 0; |
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67 | if(p) G4cout << "### G4BGGPionInelasticXS WARNING: is not applicable to " |
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68 | << p->GetParticleName() |
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69 | << G4endl; |
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70 | else G4cout << "### G4BGGPionInelasticXS WARNING: particle is not defined " |
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71 | << G4endl; |
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72 | } |
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73 | } |
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74 | |
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75 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo...... |
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76 | |
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77 | G4BGGPionInelasticXS::~G4BGGPionInelasticXS() |
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78 | { |
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79 | delete fGlauber; |
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80 | delete fPion; |
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81 | } |
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82 | |
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83 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo...... |
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84 | |
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85 | G4double G4BGGPionInelasticXS::GetIsoZACrossSection(const G4DynamicParticle* dp, |
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86 | G4double Z, |
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87 | G4double A, |
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88 | G4double) |
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89 | { |
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90 | G4double cross = 0.0; |
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91 | G4double ekin = dp->GetKineticEnergy(); |
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92 | G4int iz = G4int(Z + 0.5); |
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93 | if(iz > 92) iz = 92; |
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94 | |
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95 | if(ekin > thEnergy) { |
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96 | cross = theFac[iz]*fGlauber->GetInelasticGlauberGribov(dp, Z, A); |
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97 | } else { |
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98 | cross = fPion->GetInelasticCrossSection(dp, Z, A); |
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99 | } |
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100 | |
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101 | if(verboseLevel > 1) |
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102 | G4cout << "G4BGGPionInelasticXS::GetCrossSection for " |
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103 | << dp->GetDefinition()->GetParticleName() |
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104 | << " Ekin(GeV)= " << dp->GetKineticEnergy() |
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105 | << " in nucleus Z= " << Z << " A= " << A |
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106 | << " XS(b)= " << cross/barn |
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107 | << G4endl; |
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108 | |
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109 | return cross; |
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110 | } |
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111 | |
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112 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo...... |
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113 | |
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114 | void G4BGGPionInelasticXS::BuildPhysicsTable(const G4ParticleDefinition&) |
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115 | { |
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116 | } |
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117 | |
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118 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo...... |
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119 | |
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120 | void G4BGGPionInelasticXS::DumpPhysicsTable(const G4ParticleDefinition&) |
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121 | { |
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122 | G4cout << "G4BGGPionInelasticXS:"<<G4endl; |
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123 | } |
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124 | |
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125 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo...... |
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126 | |
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127 | void G4BGGPionInelasticXS::Initialise() |
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128 | { |
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129 | G4ParticleDefinition* part = const_cast<G4ParticleDefinition*>(particle); |
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130 | G4ThreeVector mom(0.0,0.0,1.0); |
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131 | G4DynamicParticle dp(part, mom, thEnergy); |
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132 | |
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133 | G4NistManager* nist = G4NistManager::Instance(); |
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134 | G4double A = nist->GetAtomicMassAmu(2); |
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135 | |
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136 | G4double csup, csdn; |
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137 | |
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138 | if(verboseLevel > 0) G4cout << "### G4BGGPionInelasticXS::Initialise for " |
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139 | << particle->GetParticleName() << G4endl; |
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140 | |
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141 | for(G4int iz=2; iz<93; iz++) { |
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142 | |
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143 | G4double Z = G4double(iz); |
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144 | A = nist->GetAtomicMassAmu(iz); |
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145 | |
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146 | csup = fGlauber->GetInelasticGlauberGribov(&dp, Z, A); |
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147 | csdn = fPion->GetInelasticCrossSection(&dp, Z, A); |
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148 | |
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149 | theFac[iz] = csdn/csup; |
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150 | if(verboseLevel > 0) G4cout << "Z= " << Z << " A= " << A |
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151 | << " factor= " << theFac[iz] << G4endl; |
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152 | } |
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153 | } |
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154 | |
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155 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo...... |
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156 | |
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157 | |
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