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2 | // ******************************************************************** |
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24 | // ******************************************************************** |
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25 | // |
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26 | // $Id: G4QAtomicElectronScattering.cc,v 1.2 2006/12/13 15:45:19 gunter Exp $ |
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27 | // GEANT4 tag $Name: $ |
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28 | // |
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29 | // ---------------- G4QAtomicElectronScattering class ----------------- |
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30 | // by Mikhail Kossov, December 2003. |
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31 | // G4QAtomicElectronScattering class of the CHIPS Simulation Branch in GEANT4 |
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32 | // --------------------------------------------------------------- |
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33 | // **************************************************************************************** |
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34 | // ********** This CLASS is temporary moved from the photolepton_hadron directory ********* |
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35 | // **************************************************************************************** |
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36 | |
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37 | //#define debug |
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38 | //#define pdebug |
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39 | |
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40 | #include "G4QAtomicElectronScattering.hh" |
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41 | |
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42 | G4QAtomicElectronScattering::G4QAtomicElectronScattering(const G4String& processName): |
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43 | G4VDiscreteProcess(processName) |
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44 | { |
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45 | #ifdef debug |
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46 | G4cout<<"G4QAtomicElectronScattering::Constructor is called"<<G4endl; |
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47 | #endif |
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48 | if (verboseLevel>0) G4cout << GetProcessName() << " process is created "<< G4endl; |
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49 | |
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50 | G4QCHIPSWorld::Get()->GetParticles(nPartCWorld); // Create CHIPS World with 234 particles |
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51 | G4QNucleus::SetParameters(freeNuc,freeDib,clustProb,mediRatio); // Clusterization param's |
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52 | G4Quasmon::SetParameters(Temperature,SSin2Gluons,EtaEtaprime); // Hadronic parameters |
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53 | G4QEnvironment::SetParameters(SolidAngle); // SolAngle of pbar-A secondary mesons capture |
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54 | //@@ Initialize here the G4QuasmonString parameters |
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55 | } |
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56 | |
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57 | G4bool G4QAtomicElectronScattering::manualFlag=false; // If false:use standard parameters |
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58 | G4double G4QAtomicElectronScattering::Temperature=180.; // Critical Temperature (High Ener) |
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59 | G4double G4QAtomicElectronScattering::SSin2Gluons=0.3; // Supression of s-quarks (to u&d) |
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60 | G4double G4QAtomicElectronScattering::EtaEtaprime=0.3; // Supression of eta(gg->qq/3g->qq) |
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61 | G4double G4QAtomicElectronScattering::freeNuc=0.5; // % of free nucleons on a surface |
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62 | G4double G4QAtomicElectronScattering::freeDib=0.05; // % of free diBaryons on a surface |
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63 | G4double G4QAtomicElectronScattering::clustProb=5.; // Nuclear clusterization parameter |
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64 | G4double G4QAtomicElectronScattering::mediRatio=10.; // medium/vacuum hadronizationRatio |
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65 | G4int G4QAtomicElectronScattering::nPartCWorld=152; // #of particles in the CHIPS World |
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66 | G4double G4QAtomicElectronScattering::SolidAngle=0.5; // A part of Solid Angle to capture |
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67 | G4bool G4QAtomicElectronScattering::EnergyFlux=false; // Flag to use EnergyFlux or MultyQ |
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68 | G4double G4QAtomicElectronScattering::PiPrThresh=141.4; // PiProductionThreshold for gammas |
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69 | G4double G4QAtomicElectronScattering::M2ShiftVir=20000.;// M2=-Q2=m_pi^2 shift of virtGamma |
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70 | G4double G4QAtomicElectronScattering::DiNuclMass=1880.; // Double Nucleon Mass for VirtNorm |
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71 | |
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72 | void G4QAtomicElectronScattering::SetManual() {manualFlag=true;} |
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73 | void G4QAtomicElectronScattering::SetStandard() {manualFlag=false;} |
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74 | |
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75 | // Fill the private parameters |
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76 | void G4QAtomicElectronScattering::SetParameters(G4double temper, G4double ssin2g, G4double etaetap, |
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77 | G4double fN, G4double fD, G4double cP, G4double mR, |
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78 | G4int nParCW, G4double solAn, G4bool efFlag, |
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79 | G4double piThresh, G4double mpisq, G4double dinum) |
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80 | {// ============================================================================= |
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81 | Temperature=temper; |
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82 | SSin2Gluons=ssin2g; |
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83 | EtaEtaprime=etaetap; |
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84 | freeNuc=fN; |
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85 | freeDib=fD; |
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86 | clustProb=cP; |
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87 | mediRatio=mR; |
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88 | nPartCWorld = nParCW; |
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89 | EnergyFlux=efFlag; |
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90 | SolidAngle=solAn; |
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91 | PiPrThresh=piThresh; |
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92 | M2ShiftVir=mpisq; |
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93 | DiNuclMass=dinum; |
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94 | G4QCHIPSWorld::Get()->GetParticles(nPartCWorld); // Create CHIPS World with 234 particles |
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95 | G4QNucleus::SetParameters(freeNuc,freeDib,clustProb,mediRatio); // Clusterization param's |
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96 | G4Quasmon::SetParameters(Temperature,SSin2Gluons,EtaEtaprime); // Hadronic parameters |
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97 | G4QEnvironment::SetParameters(SolidAngle); // SolAngle of pbar-A secondary mesons capture |
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98 | } |
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99 | |
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100 | // Destructor |
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101 | |
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102 | G4QAtomicElectronScattering::~G4QAtomicElectronScattering() {} |
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103 | |
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104 | |
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105 | G4LorentzVector G4QAtomicElectronScattering::GetEnegryMomentumConservation() |
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106 | { |
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107 | return EnMomConservation; |
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108 | } |
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109 | |
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110 | G4int G4QAtomicElectronScattering::GetNumberOfNeutronsInTarget() |
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111 | { |
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112 | return nOfNeutrons; |
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113 | } |
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114 | |
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115 | G4double G4QAtomicElectronScattering::GetMeanFreePath(const G4Track& aTrack, |
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116 | G4double,G4ForceCondition* Fc) |
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117 | { |
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118 | *Fc = NotForced; |
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119 | const G4DynamicParticle* incidentParticle = aTrack.GetDynamicParticle(); |
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120 | G4ParticleDefinition* incidentParticleDefinition=incidentParticle->GetDefinition(); |
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121 | if( !IsApplicable(*incidentParticleDefinition)) |
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122 | G4cout<<"-Wa-G4QAtElScat::GetMeanFreePath called for not implemented particle"<<G4endl; |
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123 | // Calculate the mean Cross Section for the set of Elements(*Isotopes) in the Material |
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124 | G4double Momentum = incidentParticle->GetTotalMomentum(); // 3-momentum of the Particle |
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125 | const G4Material* material = aTrack.GetMaterial(); // Get the current material |
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126 | const G4double* NOfNucPerVolume = material->GetVecNbOfAtomsPerVolume(); |
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127 | const G4ElementVector* theElementVector = material->GetElementVector(); |
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128 | G4int nE=material->GetNumberOfElements(); |
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129 | #ifdef debug |
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130 | G4cout<<"G4QAtomElectScattering::GetMeanFreePath:"<<nE<<" Elem's in theMaterial"<<G4endl; |
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131 | #endif |
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132 | G4bool leptoNuc=false; // By default the reaction is not lepto-nuclear |
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133 | G4VQCrossSection* CSmanager=G4QElectronNuclearCrossSection::GetPointer(); |
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134 | if(incidentParticleDefinition == G4Electron::Electron()) |
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135 | { |
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136 | CSmanager=G4QElectronNuclearCrossSection::GetPointer(); |
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137 | leptoNuc=true; |
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138 | } |
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139 | else G4cout<<"G4QAtomEScattering::GetMeanFreePath:Particle isn't known in CHIPS"<<G4endl; |
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140 | |
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141 | G4QIsotope* Isotopes = G4QIsotope::Get(); // Pointer to the G4QIsotopes singelton |
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142 | G4double sigma=0.; |
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143 | for(G4int i=0; i<nE; ++i) |
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144 | { |
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145 | G4int Z = static_cast<G4int>((*theElementVector)[i]->GetZ()); // Z of the Element |
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146 | std::vector<std::pair<G4int,G4double>*>* cs= Isotopes->GetCSVector(Z); // Pointer to CS |
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147 | G4int nIs=cs->size(); // A#Of Isotopes in the Element |
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148 | if(nIs) for(G4int j=0; j<nIs; j++) // Calculate CS for eachIsotope of El |
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149 | { |
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150 | std::pair<G4int,G4double>* curIs=(*cs)[j]; // A pointer, which is used twice |
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151 | G4int N=curIs->first; // #ofNeuterons in the isotope |
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152 | curIs->second = CSmanager->GetCrossSection(true,Momentum,Z,N,13); // CS calculation |
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153 | } // End of temporary initialization of the cross sections in the G4QIsotope singeltone |
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154 | sigma+=Isotopes->GetMeanCrossSection(Z)*NOfNucPerVolume[i]; // SUM(MeanCS*NOFNperV) |
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155 | } // End of LOOP over Elements |
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156 | |
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157 | // Check that cross section is not zero and return the mean free path |
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158 | if(sigma > 0.) return 1./sigma; // Mean path [distance] |
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159 | return DBL_MAX; |
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160 | } |
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161 | |
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162 | |
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163 | G4bool G4QAtomicElectronScattering::IsApplicable(const G4ParticleDefinition& particle) |
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164 | { |
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165 | if (particle == *( G4MuonPlus::MuonPlus() )) return true; |
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166 | else if (particle == *( G4MuonMinus::MuonMinus() )) return true; |
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167 | else if (particle == *( G4TauPlus::TauPlus() )) return true; |
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168 | else if (particle == *( G4TauMinus::TauMinus() )) return true; |
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169 | else if (particle == *( G4Electron::Electron() )) return true; |
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170 | else if (particle == *( G4Positron::Positron() )) return true; |
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171 | else if (particle == *( G4Gamma::Gamma() )) return true; |
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172 | else if (particle == *( G4Proton::Proton() )) return true; |
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173 | //else if (particle == *( G4Neutron::Neutron() )) return true; |
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174 | //else if (particle == *( G4PionMinus::PionMinus() )) return true; |
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175 | //else if (particle == *( G4PionPlus::PionPlus() )) return true; |
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176 | //else if (particle == *( G4KaonPlus::KaonPlus() )) return true; |
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177 | //else if (particle == *( G4KaonMinus::KaonMinus() )) return true; |
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178 | //else if (particle == *( G4KaonZeroLong::KaonZeroLong() )) return true; |
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179 | //else if (particle == *(G4KaonZeroShort::KaonZeroShort())) return true; |
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180 | //else if (particle == *( G4Lambda::Lambda() )) return true; |
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181 | //else if (particle == *( G4SigmaPlus::SigmaPlus() )) return true; |
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182 | //else if (particle == *( G4SigmaMinus::SigmaMinus() )) return true; |
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183 | //else if (particle == *( G4SigmaZero::SigmaZero() )) return true; |
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184 | //else if (particle == *( G4XiMinus::XiMinus() )) return true; |
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185 | //else if (particle == *( G4XiZero::XiZero() )) return true; |
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186 | //else if (particle == *( G4OmegaMinus::OmegaMinus() )) return true; |
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187 | //else if (particle == *( G4AntiNeutron::AntiNeutron() )) return true; |
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188 | //else if (particle == *( G4AntiProton::AntiProton() )) return true; |
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189 | #ifdef debug |
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190 | G4cout<<"***G4QAtomElScattering::IsApplicable: PDG="<<particle.GetPDGEncoding()<<G4endl; |
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191 | #endif |
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192 | return false; |
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193 | } |
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194 | |
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195 | G4VParticleChange* G4QAtomicElectronScattering::PostStepDoIt(const G4Track& track, |
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196 | const G4Step& step) |
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197 | { |
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198 | static const G4double mu=G4MuonMinus::MuonMinus()->GetPDGMass(); // muon mass |
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199 | static const G4double mu2=mu*mu; // squared muon mass |
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200 | //static const G4double dpi=M_PI+M_PI; // 2*pi (for Phi distr.) ***changed to twopi*** |
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201 | static const G4double mNeut= G4QPDGCode(2112).GetMass(); |
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202 | static const G4double mProt= G4QPDGCode(2212).GetMass(); |
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203 | static const G4double dM=mProt+mNeut; // doubled nucleon mass |
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204 | //static const G4double mPi0 = G4QPDGCode(111).GetMass(); |
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205 | //static const G4double mDeut= G4QPDGCode(2112).GetNuclMass(1,1,0); |
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206 | //static const G4double mPi = G4QPDGCode(211).GetMass(); |
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207 | //static const G4double mMu = G4QPDGCode(13).GetMass(); |
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208 | //static const G4double mTau = G4QPDGCode(15).GetMass(); |
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209 | //static const G4double mEl = G4QPDGCode(11).GetMass(); |
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210 | // |
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211 | const G4DynamicParticle* projHadron = track.GetDynamicParticle(); |
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212 | const G4ParticleDefinition* particle=projHadron->GetDefinition(); |
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213 | G4LorentzVector proj4M=projHadron->Get4Momentum(); |
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214 | G4double momentum = projHadron->GetTotalMomentum(); // 3-momentum of the Particle |
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215 | G4double Momentum=proj4M.rho(); |
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216 | if(std::fabs(Momentum-momentum)>.001) G4cerr<<"G4QAtElScat::PSDI P="<<Momentum<<"=" |
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217 | <<momentum<<G4endl; |
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218 | #ifdef debug |
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219 | G4double mp=proj4M.m(); |
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220 | G4cout<<"G4QAtomElScattering::PostStepDoIt called, P="<<Momentum<<"="<<momentum<<G4endl; |
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221 | #endif |
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222 | if (!IsApplicable(*particle)) // Check applicability |
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223 | { |
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224 | G4cerr<<"G4QAtomElectScat::PostStepDoIt:Only gam,e+,e-,mu+,mu-,t+,t-,p are implemented" |
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225 | <<G4endl; |
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226 | return 0; |
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227 | } |
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228 | const G4Material* material = track.GetMaterial(); // Get the current material |
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229 | G4int Z=0; |
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230 | const G4ElementVector* theElementVector = material->GetElementVector(); |
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231 | G4int i=0; |
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232 | G4double sum=0.; |
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233 | G4int nE=material->GetNumberOfElements(); |
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234 | #ifdef debug |
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235 | G4cout<<"G4QAtomElectronScat::PostStepDoIt: "<<nE<<" elements in the material."<<G4endl; |
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236 | #endif |
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237 | G4int projPDG=0; // PDG Code prototype for the captured hadron |
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238 | // Not all these particles are implemented yet (see Is Applicable) |
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239 | if (particle == G4MuonPlus::MuonPlus() ) projPDG= -13; |
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240 | else if (particle == G4MuonMinus::MuonMinus() ) projPDG= 13; |
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241 | else if (particle == G4Electron::Electron() ) projPDG= 11; |
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242 | else if (particle == G4Positron::Positron() ) projPDG= -11; |
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243 | else if (particle == G4Gamma::Gamma() ) projPDG= 22; |
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244 | else if (particle == G4Proton::Proton() ) projPDG= 2212; |
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245 | else if (particle == G4Neutron::Neutron() ) projPDG= 2112; |
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246 | else if (particle == G4PionMinus::PionMinus() ) projPDG= -211; |
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247 | else if (particle == G4PionPlus::PionPlus() ) projPDG= 211; |
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248 | else if (particle == G4KaonPlus::KaonPlus() ) projPDG= 2112; |
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249 | else if (particle == G4KaonMinus::KaonMinus() ) projPDG= -321; |
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250 | else if (particle == G4KaonZeroLong::KaonZeroLong() ) projPDG= 130; |
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251 | else if (particle == G4KaonZeroShort::KaonZeroShort()) projPDG= 310; |
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252 | else if (particle == G4TauPlus::TauPlus() ) projPDG= -15; |
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253 | else if (particle == G4TauMinus::TauMinus() ) projPDG= 15; |
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254 | else if (particle == G4Lambda::Lambda() ) projPDG= 3122; |
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255 | else if (particle == G4SigmaPlus::SigmaPlus() ) projPDG= 3222; |
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256 | else if (particle == G4SigmaMinus::SigmaMinus() ) projPDG= 3112; |
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257 | else if (particle == G4SigmaZero::SigmaZero() ) projPDG= 3212; |
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258 | else if (particle == G4XiMinus::XiMinus() ) projPDG= 3312; |
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259 | else if (particle == G4XiZero::XiZero() ) projPDG= 3322; |
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260 | else if (particle == G4OmegaMinus::OmegaMinus() ) projPDG= 3334; |
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261 | else if (particle == G4AntiNeutron::AntiNeutron() ) projPDG=-2112; |
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262 | else if (particle == G4AntiProton::AntiProton() ) projPDG=-2212; |
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263 | #ifdef debug |
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264 | G4int prPDG=particle->GetPDGEncoding(); |
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265 | G4cout<<"G4QAtomElScat::PostStepRestDoIt: projPDG="<<projPDG<<",stPDG="<<prPDG<<G4endl; |
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266 | #endif |
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267 | if(!projPDG) |
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268 | { |
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269 | G4cerr<<"-Warning-G4QAtomElScattering::PostStepDoIt:Undefined captured hadron"<<G4endl; |
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270 | return 0; |
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271 | } |
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272 | // @@ It's a standard randomization procedure, which can be placed in G4QMaterial class |
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273 | std::vector<G4double> sumfra; |
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274 | for(i=0; i<nE; ++i) |
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275 | { |
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276 | G4double frac=material->GetFractionVector()[i]; |
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277 | sum+=frac; |
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278 | sumfra.push_back(sum); // remember the summation steps |
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279 | } |
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280 | G4double rnd = sum*G4UniformRand(); |
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281 | for(i=0; i<nE; ++i) if (rnd<sumfra[i]) break; |
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282 | G4Element* pElement=(*theElementVector)[i]; |
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283 | Z=static_cast<G4int>(pElement->GetZ()); |
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284 | if(Z<=0) |
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285 | { |
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286 | G4cerr<<"-Warning-G4QAtomicElectronScattering::PostStepDoIt: Element's Z="<<Z<<G4endl; |
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287 | if(Z<0) return 0; |
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288 | } |
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289 | G4int N = Z; |
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290 | G4int isoSize=0; // The default for the isoVectorLength is 0 |
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291 | G4IsotopeVector* isoVector=pElement->GetIsotopeVector(); |
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292 | if(isoVector) isoSize=isoVector->size(); // Get real size of the isotopeVector if exists |
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293 | #ifdef debug |
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294 | G4cout<<"G4QAtomicElectronScattering::PostStepDoIt: isovectorLength="<<isoSize<<G4endl; |
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295 | #endif |
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296 | if(isoSize) // The Element has not trivial abumdance set |
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297 | { |
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298 | // @@ the following solution is temporary till G4Element can contain the QIsotopIndex |
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299 | G4int curInd=G4QIsotope::Get()->GetLastIndex(Z); |
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300 | if(!curInd) // The new artificial element must be defined |
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301 | { |
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302 | std::vector<std::pair<G4int,G4double>*>* newAbund = |
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303 | new std::vector<std::pair<G4int,G4double>*>; |
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304 | G4double* abuVector=pElement->GetRelativeAbundanceVector(); |
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305 | for(G4int j=0; j<isoSize; j++) |
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306 | { |
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307 | N=pElement->GetIsotope(j)->GetN()-Z; |
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308 | if(pElement->GetIsotope(j)->GetZ()!=Z) G4cerr<<"*G4QCaptureAtRest::AtRestDoIt: Z=" |
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309 | <<pElement->GetIsotope(j)->GetZ()<<"#"<<Z<<G4endl; |
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310 | G4double abund=abuVector[j]; |
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311 | std::pair<G4int,G4double>* pr= new std::pair<G4int,G4double>(N,abund); |
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312 | #ifdef debug |
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313 | G4cout<<"G4QAtomElScat::PostStepDoIt:pair#="<<j<<", N="<<N<<",ab="<<abund<<G4endl; |
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314 | #endif |
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315 | newAbund->push_back(pr); |
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316 | } |
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317 | #ifdef debug |
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318 | G4cout<<"G4QAtomElectScat::PostStepDoIt:pairVectorLength="<<newAbund->size()<<G4endl; |
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319 | #endif |
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320 | curInd=G4QIsotope::Get()->InitElement(Z,1,newAbund); |
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321 | for(G4int k=0; k<isoSize; k++) delete (*newAbund)[k]; |
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322 | delete newAbund; |
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323 | } |
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324 | // @@ ^^^^^^^^^^ End of the temporary solution ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ |
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325 | N = G4QIsotope::Get()->GetNeutrons(Z,curInd); |
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326 | } |
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327 | else N = G4QIsotope::Get()->GetNeutrons(Z); |
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328 | nOfNeutrons=N; // Remember it for energy-mom. check |
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329 | G4double dd=0.025; |
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330 | G4double am=Z+N; |
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331 | G4double sr=std::sqrt(am); |
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332 | G4double dsr=0.01*(sr+sr); |
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333 | if(dsr<dd)dsr=dd; |
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334 | if(manualFlag) G4QNucleus::SetParameters(freeNuc,freeDib,clustProb,mediRatio); // ManualP |
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335 | else if(projPDG==-2212) G4QNucleus::SetParameters(1.-dsr-dsr,dd+dd,5.,10.);//aP ClustPars |
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336 | else if(projPDG==-211) G4QNucleus::SetParameters(.67-dsr,.32-dsr,5.,9.);//Pi- ClustPars |
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337 | #ifdef debug |
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338 | G4cout<<"G4QAtomElectScattering::PostStepDoIt: N="<<N<<" for element with Z="<<Z<<G4endl; |
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339 | #endif |
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340 | if(N<0) |
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341 | { |
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342 | G4cerr<<"---Warning---G4QAtomElectScat::PostStepDoIt:Element with N="<<N<< G4endl; |
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343 | return 0; |
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344 | } |
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345 | if(projPDG==11||projPDG==-11||projPDG==13||projPDG==-13||projPDG==15||projPDG==-15) |
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346 | { // Lepto-nuclear case with the equivalent photon algorithm. @@InFuture + neutrino & QE |
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347 | G4double kinEnergy= projHadron->GetKineticEnergy(); |
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348 | G4ParticleMomentum dir = projHadron->GetMomentumDirection(); |
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349 | G4VQCrossSection* CSmanager=G4QElectronNuclearCrossSection::GetPointer(); |
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350 | G4int aProjPDG=std::abs(projPDG); |
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351 | if(aProjPDG==13) CSmanager=G4QMuonNuclearCrossSection::GetPointer(); |
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352 | if(aProjPDG==15) CSmanager=G4QTauNuclearCrossSection::GetPointer(); |
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353 | G4double xSec=CSmanager->GetCrossSection(false,Momentum,Z,N,13);//Recalculate CrossSect |
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354 | // @@ check a possibility to separate p, n, or alpha (!) |
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355 | if(xSec <= 0.) // The cross-section iz 0 -> Do Nothing |
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356 | { |
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357 | //Do Nothing Action insead of the reaction |
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358 | aParticleChange.ProposeEnergy(kinEnergy); |
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359 | aParticleChange.ProposeLocalEnergyDeposit(0.); |
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360 | aParticleChange.ProposeMomentumDirection(dir) ; |
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361 | return G4VDiscreteProcess::PostStepDoIt(track,step); |
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362 | } |
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363 | G4double photonEnergy = CSmanager->GetExchangeEnergy(); // Energy of EqivExchangePart |
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364 | if( kinEnergy < photonEnergy ) |
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365 | { |
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366 | //Do Nothing Action insead of the reaction |
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367 | G4cerr<<"G4QAtomElectScat::PSDoIt: phE="<<photonEnergy<<">leptE="<<kinEnergy<<G4endl; |
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368 | aParticleChange.ProposeEnergy(kinEnergy); |
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369 | aParticleChange.ProposeLocalEnergyDeposit(0.); |
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370 | aParticleChange.ProposeMomentumDirection(dir) ; |
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371 | return G4VDiscreteProcess::PostStepDoIt(track,step); |
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372 | } |
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373 | G4double photonQ2 = CSmanager->GetExchangeQ2(photonEnergy);// Q2(t) of EqivExchangePart |
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374 | G4double W=photonEnergy-photonQ2/dM;// HadronicEnergyFlow (W-energy) for virtual photon |
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375 | if(W<0.) |
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376 | { |
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377 | //Do Nothing Action insead of the reaction |
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378 | G4cout<<"G4QAtomElScat::PostStepDoIt:(lN) negative equivalent energy W="<<W<<G4endl; |
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379 | aParticleChange.ProposeEnergy(kinEnergy); |
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380 | aParticleChange.ProposeLocalEnergyDeposit(0.); |
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381 | aParticleChange.ProposeMomentumDirection(dir) ; |
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382 | return G4VDiscreteProcess::PostStepDoIt(track,step); |
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383 | } |
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384 | // Update G4VParticleChange for the scattered muon |
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385 | G4VQCrossSection* thePhotonData=G4QPhotonNuclearCrossSection::GetPointer(); |
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386 | G4double sigNu=thePhotonData->GetCrossSection(true,photonEnergy, Z, N);// Integrated CS |
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387 | G4double sigK =thePhotonData->GetCrossSection(true, W, Z, N); // Real CrosSect |
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388 | G4double rndFraction = CSmanager->GetVirtualFactor(photonEnergy, photonQ2); |
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389 | if(sigNu*G4UniformRand()>sigK*rndFraction) |
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390 | { |
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391 | //Do NothingToDo Action insead of the reaction |
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392 | G4cout<<"G4QAtomElectScat::PostStepDoIt: probability correction - DoNothing"<<G4endl; |
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393 | aParticleChange.ProposeEnergy(kinEnergy); |
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394 | aParticleChange.ProposeLocalEnergyDeposit(0.); |
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395 | aParticleChange.ProposeMomentumDirection(dir) ; |
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396 | return G4VDiscreteProcess::PostStepDoIt(track,step); |
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397 | } |
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398 | G4double iniE=kinEnergy+mu; // Initial total energy of the muon |
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399 | G4double finE=iniE-photonEnergy; // Final total energy of the muon |
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400 | if(finE>0) aParticleChange.ProposeEnergy(finE) ; |
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401 | else |
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402 | { |
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403 | aParticleChange.ProposeEnergy(0.) ; |
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404 | aParticleChange.ProposeTrackStatus(fStopAndKill); |
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405 | } |
---|
406 | // Scatter the muon |
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407 | G4double EEm=iniE*finE-mu2; // Just an intermediate value to avoid "2*" |
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408 | G4double iniP=std::sqrt(iniE*iniE-mu2); // Initial momentum of the electron |
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409 | G4double finP=std::sqrt(finE*finE-mu2); // Final momentum of the electron |
---|
410 | G4double cost=(EEm+EEm-photonQ2)/iniP/finP; // cos(theta) for the electron scattering |
---|
411 | if(cost>1.) cost=1.; // To avoid the accuracy of calculation problem |
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412 | //else if(cost>1.001) // @@ error report can be done, but not necessary |
---|
413 | if(cost<-1.) cost=-1.; // To avoid the accuracy of calculation problem |
---|
414 | //else if(cost<-1.001) // @@ error report can be done, but not necessary |
---|
415 | // --- Example from electromagnetic physics -- |
---|
416 | //G4ThreeVector newMuonDirection(dirx,diry,dirz); |
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417 | //newMuonDirection.rotateUz(dir); |
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418 | //aParticleChange.ProposeMomentumDirection(newMuonDirection1) ; |
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419 | // The scattering in respect to the derection of the incident muon is made impicitly: |
---|
420 | G4ThreeVector ort=dir.orthogonal(); // Not normed orthogonal vector (!) (to dir) |
---|
421 | G4ThreeVector ortx = ort.unit(); // First unit vector orthogonal to the direction |
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422 | G4ThreeVector orty = dir.cross(ortx);// Second unit vector orthoganal to the direction |
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423 | G4double sint=std::sqrt(1.-cost*cost); // Perpendicular component |
---|
424 | G4double phi=twopi*G4UniformRand(); // phi of scattered electron |
---|
425 | G4double sinx=sint*std::sin(phi); // x-component |
---|
426 | G4double siny=sint*std::cos(phi); // y-component |
---|
427 | G4ThreeVector findir=cost*dir+sinx*ortx+siny*orty; |
---|
428 | aParticleChange.ProposeMomentumDirection(findir); // new direction for the muon |
---|
429 | const G4ThreeVector photon3M=iniP*dir-finP*findir; |
---|
430 | projPDG=22; |
---|
431 | proj4M=G4LorentzVector(photon3M,photon3M.mag()); |
---|
432 | } |
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433 | G4int targPDG=90000000+Z*1000+N; // PDG Code of the target nucleus |
---|
434 | G4QPDGCode targQPDG(targPDG); |
---|
435 | G4double tM=targQPDG.GetMass(); |
---|
436 | EnMomConservation=proj4M+G4LorentzVector(0.,0.,0.,tM); // Total 4-mom of the reaction |
---|
437 | G4QHadronVector* output=new G4QHadronVector; // Prototype of the output G4QHadronVector |
---|
438 | // @@@@@@@@@@@@@@ Temporary for the testing purposes --- Begin |
---|
439 | //G4bool elF=false; // Flag of the ellastic scattering is "false" by default |
---|
440 | //G4double eWei=1.; |
---|
441 | // @@@@@@@@@@@@@@ Temporary for the testing purposes --- End |
---|
442 | #ifdef debug |
---|
443 | G4cout<<"G4QAtomElScat::PostStepDoIt: projPDG="<<projPDG<<", targPDG="<<targPDG<<G4endl; |
---|
444 | #endif |
---|
445 | G4QHadron* pH = new G4QHadron(projPDG,proj4M); // ---> DELETED -->-- -+ |
---|
446 | if(momentum<1000.) // Condition for using G4QEnvironment (not G4QuasmonString) | |
---|
447 | { // | |
---|
448 | G4QHadronVector projHV; // | |
---|
449 | projHV.push_back(pH); // DESTROYED over 2 lines -+ | |
---|
450 | G4QEnvironment* pan= new G4QEnvironment(projHV,targPDG);// ---> DELETED --->-----+ | | |
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451 | std::for_each(projHV.begin(), projHV.end(), DeleteQHadron()); // <---<------<----+-+-+ |
---|
452 | projHV.clear(); // <------------<---------------<-------------------<------------+-+ . |
---|
453 | #ifdef debug |
---|
454 | G4cout<<"G4QAtomElectScat::PostStepDoIt: pPDG="<<projPDG<<", mp="<<mp<<G4endl;// | . |
---|
455 | #endif |
---|
456 | try // | . |
---|
457 | { // | . |
---|
458 | delete output; // | . |
---|
459 | output = pan->Fragment();// DESTROYED in the end of the LOOP work space | . |
---|
460 | } // | . |
---|
461 | catch (G4QException& error)// | . |
---|
462 | { // | . |
---|
463 | //#ifdef pdebug |
---|
464 | G4cerr<<"**G4QAtomElectScat::PostStepDoIt:G4QE Exception is catched"<<G4endl;//| . |
---|
465 | //#endif |
---|
466 | G4Exception("G4QAtomElScat::PostStepDoIt:","27",FatalException,"CHIPScrash");//| . |
---|
467 | } // | . |
---|
468 | delete pan; // Delete the Nuclear Environment <--<--+ . |
---|
469 | } // . |
---|
470 | else // Use G4QuasmonString . |
---|
471 | { // ^ |
---|
472 | G4QuasmonString* pan= new G4QuasmonString(pH,false,targPDG,false);//-> DELETED --+ | |
---|
473 | delete pH; // --------<-------+---+ |
---|
474 | #ifdef debug |
---|
475 | G4double mp=G4QPDGCode(projPDG).GetMass(); // Mass of the projectile particle | |
---|
476 | G4cout<<"G4QAtomElectScat::PostStepDoIt: pPDG="<<projPDG<<", pM="<<mp<<G4endl; //| |
---|
477 | #endif |
---|
478 | //G4int tNH=0; // Prototype of the number of secondaries inOut| |
---|
479 | try // | |
---|
480 | { // | |
---|
481 | delete output; // | |
---|
482 | output = pan->Fragment();// DESTROYED in the end of the LOOP work space | |
---|
483 | // @@@@@@@@@@@@@@ Temporary for the testing purposes --- Begin | |
---|
484 | //tNH=pan->GetNOfHadrons(); // For the test purposes of the String | |
---|
485 | //if(tNH==2) // At least 2 hadrons are in the Constr.Output | |
---|
486 | //{// | |
---|
487 | // elF=true; // Just put a flag for the ellastic Scattering | |
---|
488 | // delete output; // Delete a prototype of dummy G4QHadronVector | |
---|
489 | // output = pan->GetHadrons(); // DESTROYED in the end of the LOOP work space | |
---|
490 | //}// | |
---|
491 | //eWei=pan->GetWeight(); // Just an example for the weight of the event | |
---|
492 | #ifdef debug |
---|
493 | //G4cout<<"=====>>G4QAtomElScat::PostStepDoIt:elF="<<elF<<",n="<<tNH<<G4endl;//| |
---|
494 | #endif |
---|
495 | // @@@@@@@@@@@@@@ Temporary for the testing purposes --- End | |
---|
496 | } // | |
---|
497 | catch (G4QException& error)// | |
---|
498 | { // | |
---|
499 | //#ifdef pdebug |
---|
500 | G4cerr<<"**G4QAtomElectScat::PostStepDoIt: GEN Exception is catched"<<G4endl;//| |
---|
501 | //#endif |
---|
502 | G4Exception("G4QAtomElSct::AtRestDoIt:","27",FatalException,"QString Excep");//| |
---|
503 | } // | |
---|
504 | delete pan; // Delete the Nuclear Environment ---<--+ |
---|
505 | } |
---|
506 | aParticleChange.Initialize(track); |
---|
507 | G4double localtime = track.GetGlobalTime(); |
---|
508 | G4ThreeVector position = track.GetPosition(); |
---|
509 | G4TouchableHandle trTouchable = track.GetTouchableHandle(); |
---|
510 | // ------------- From here the secondaries are filled ------------------------- |
---|
511 | G4int tNH = output->size(); // A#of hadrons in the output |
---|
512 | aParticleChange.SetNumberOfSecondaries(tNH); |
---|
513 | // Now add nuclear fragments |
---|
514 | #ifdef debug |
---|
515 | G4cout<<"G4QAtomElectronScat::PostStepDoIt: "<<tNH<<" particles are generated"<<G4endl; |
---|
516 | #endif |
---|
517 | G4int nOut=output->size(); // Real length of the output @@ Temporary |
---|
518 | if(tNH==1) tNH=0; // @@ Temporary |
---|
519 | if(tNH==2&&2!=nOut) G4cout<<"--Warning--G4QAtomElScat::PostStepDoIt: 2 # "<<nOut<<G4endl; |
---|
520 | // Deal with ParticleChange final state interface to GEANT4 output of the process |
---|
521 | //if(tNH==2) for(i=0; i<tNH; i++) // @@ Temporary tNH==2 instead of just tNH |
---|
522 | if(tNH) for(i=0; i<tNH; i++) // @@ Temporary tNH==2 instead of just tNH |
---|
523 | { |
---|
524 | // Note that one still has to take care of Hypernuclei (with Lambda or Sigma inside) |
---|
525 | // Hypernucleus mass calculation and ion-table interface upgrade => work for Hisaya @@ |
---|
526 | // The decau process for hypernuclei must be developed in GEANT4 (change CHIPS body) |
---|
527 | G4QHadron* hadr=output->operator[](i); // Pointer to the output hadron |
---|
528 | G4int PDGCode = hadr->GetPDGCode(); |
---|
529 | G4int nFrag = hadr->GetNFragments(); |
---|
530 | #ifdef pdebug |
---|
531 | G4cout<<"G4QAtomElectScat::AtRestDoIt: H#"<<i<<",PDG="<<PDGCode<<",nF="<<nFrag<<G4endl; |
---|
532 | #endif |
---|
533 | if(nFrag) // Skip intermediate (decayed) hadrons |
---|
534 | { |
---|
535 | #ifdef debug |
---|
536 | G4cout<<"G4QAtomElScat::PostStepDoIt: Intermediate particle is found i="<<i<<G4endl; |
---|
537 | #endif |
---|
538 | delete hadr; |
---|
539 | continue; |
---|
540 | } |
---|
541 | G4DynamicParticle* theSec = new G4DynamicParticle; |
---|
542 | G4ParticleDefinition* theDefinition; |
---|
543 | if (PDGCode==90000001) theDefinition = G4Neutron::Neutron(); |
---|
544 | else if(PDGCode==90001000) theDefinition = G4Proton::Proton();//While it can be in ions |
---|
545 | else if(PDGCode==91000000) theDefinition = G4Lambda::Lambda(); |
---|
546 | else if(PDGCode==311 || PDGCode==-311) |
---|
547 | { |
---|
548 | if(G4UniformRand()>.5) theDefinition = G4KaonZeroLong::KaonZeroLong(); // K_L |
---|
549 | else theDefinition = G4KaonZeroShort::KaonZeroShort(); // K_S |
---|
550 | } |
---|
551 | else if(PDGCode==91000999) theDefinition = G4SigmaPlus::SigmaPlus(); |
---|
552 | else if(PDGCode==90999001) theDefinition = G4SigmaMinus::SigmaMinus(); |
---|
553 | else if(PDGCode==91999000) theDefinition = G4XiMinus::XiMinus(); |
---|
554 | else if(PDGCode==91999999) theDefinition = G4XiZero::XiZero(); |
---|
555 | else if(PDGCode==92998999) theDefinition = G4OmegaMinus::OmegaMinus(); |
---|
556 | else if(PDGCode >80000000) // Defines hypernuclei as normal nuclei (N=N+S Correction!) |
---|
557 | { |
---|
558 | G4int aZ = hadr->GetCharge(); |
---|
559 | G4int aA = hadr->GetBaryonNumber(); |
---|
560 | #ifdef pdebug |
---|
561 | G4cout<<"G4QAtomicElectronScattering::AtRestDoIt:Ion Z="<<aZ<<", A="<<aA<<G4endl; |
---|
562 | #endif |
---|
563 | theDefinition = G4ParticleTable::GetParticleTable()->FindIon(aZ,aA,0,aZ); |
---|
564 | } |
---|
565 | //else theDefinition = G4ParticleTable::GetParticleTable()->FindParticle(PDGCode); |
---|
566 | else |
---|
567 | { |
---|
568 | #ifdef pdebug |
---|
569 | G4cout<<"G4QAtomElectScat::PostStepDoIt:Define particle with PDG="<<PDGCode<<G4endl; |
---|
570 | #endif |
---|
571 | theDefinition = G4QPDGToG4Particle::Get()->GetParticleDefinition(PDGCode); |
---|
572 | #ifdef pdebug |
---|
573 | G4cout<<"G4QAtomElScat::PostStepDoIt:AfterParticleDefinition PDG="<<PDGCode<<G4endl; |
---|
574 | #endif |
---|
575 | } |
---|
576 | if(!theDefinition) |
---|
577 | { |
---|
578 | G4cout<<"---Warning---G4QAtomElScattering::PostStepDoIt: drop PDG="<<PDGCode<<G4endl; |
---|
579 | delete hadr; |
---|
580 | continue; |
---|
581 | } |
---|
582 | #ifdef pdebug |
---|
583 | G4cout<<"G4QAtomElScat::PostStepDoIt:Name="<<theDefinition->GetParticleName()<<G4endl; |
---|
584 | #endif |
---|
585 | theSec->SetDefinition(theDefinition); |
---|
586 | G4LorentzVector h4M=hadr->Get4Momentum(); |
---|
587 | EnMomConservation-=h4M; |
---|
588 | #ifdef tdebug |
---|
589 | G4cout<<"G4QCollis::PSDI:"<<i<<","<<PDGCode<<h4M<<h4M.m()<<EnMomConservation<<G4endl; |
---|
590 | #endif |
---|
591 | #ifdef debug |
---|
592 | G4cout<<"G4QAtomElectScat::PostStepDoIt:#"<<i<<",PDG="<<PDGCode<<",4M="<<h4M<<G4endl; |
---|
593 | #endif |
---|
594 | theSec->Set4Momentum(h4M); // ^ |
---|
595 | delete hadr; // <-----<-----------<-------------<---------------------<---------<-----+ |
---|
596 | #ifdef debug |
---|
597 | G4ThreeVector curD=theSec->GetMomentumDirection(); // ^ |
---|
598 | G4double curM=theSec->GetMass(); // | |
---|
599 | G4double curE=theSec->GetKineticEnergy()+curM; // ^ |
---|
600 | G4cout<<"G4QCollis::PSDoIt:p="<<curD<<curD.mag()<<",e="<<curE<<",m="<<curM<<G4endl;// | |
---|
601 | #endif |
---|
602 | G4Track* aNewTrack = new G4Track(theSec, localtime, position ); // ^ |
---|
603 | aNewTrack->SetTouchableHandle(trTouchable); // | |
---|
604 | aParticleChange.AddSecondary( aNewTrack ); // | |
---|
605 | #ifdef debug |
---|
606 | G4cout<<"G4QAtomicElectronScattering::PostStepDoIt:#"<<i<<" is done."<<G4endl; // | |
---|
607 | #endif |
---|
608 | } // | |
---|
609 | delete output; // instances of the G4QHadrons from the output are already deleted above + |
---|
610 | aParticleChange.ProposeTrackStatus(fStopAndKill); // Kill the absorbed particle |
---|
611 | //return &aParticleChange; // This is not enough (ClearILL) |
---|
612 | #ifdef debug |
---|
613 | G4cout<<"G4QAtomicElectronScattering::PostStepDoIt:****PostStepDoIt done****"<<G4endl; |
---|
614 | #endif |
---|
615 | return G4VDiscreteProcess::PostStepDoIt(track, step); |
---|
616 | } |
---|