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G4FissLib.cc
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51 // Copyright (c) 2006 The Regents of the University of California.
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53 // UCRL-CODE-224807
54 //
55 //
56 //
57 // neutron_hp -- source file
58 // J.M. Verbeke, Jan-2007
59 // A prototype of the low energy neutron transport model.
60 //
61 #include "G4FissLib.hh"
62 #include "G4SystemOfUnits.hh"
63 
65  :xSec(0)
66 {
67  SetMinEnergy(0.0);
68  SetMaxEnergy(20.*MeV);
69  if(!std::getenv("G4NEUTRONHPDATA")) {
70  G4cout << "Please setenv G4NEUTRONHPDATA to point to the neutron cross-section files." << G4endl;
71  throw G4HadronicException(__FILE__, __LINE__, "Please setenv G4NEUTRONHPDATA to point to the neutron cross-section files.");
72  }
73  dirName = std::getenv("G4NEUTRONHPDATA");
74  G4String tString = "/Fission/";
75  dirName = dirName + tString;
78 
79  for (G4int i=0; i<numEle; i++)
80  {
81 // G4cout << "G4FissLib::G4FissLib(): element "<< i << " : " << (*(G4Element::GetElementTable()))[i]->GetZ()<< G4endl;
82  if((*(G4Element::GetElementTable()))[i]->GetZ()>89)
83  {
86  }
87  }
88 }
89 
91 {
92  delete [] theFission;
93 }
94 
97 {
99 
100  const G4Material* theMaterial = aTrack.GetMaterial();
101  G4int n = theMaterial->GetNumberOfElements();
102  G4int index = theMaterial->GetElement(0)->GetIndex();
103 
104  if (n != 1) {
105  xSec = new G4double[n];
106  G4double sum = 0;
107  G4int i;
108  G4int imat;
109  const G4double * NumAtomsPerVolume = theMaterial->GetVecNbOfAtomsPerVolume();
110  G4double rWeight;
111  G4ParticleHPThermalBoost aThermalE;
112  for (i = 0; i < n; i++) {
113  imat = theMaterial->GetElement(i)->GetIndex();
114  rWeight = NumAtomsPerVolume[i];
115  xSec[i] = theFission[imat].GetXsec(aThermalE.GetThermalEnergy(aTrack,
116  theMaterial->GetElement(i),
117  theMaterial->GetTemperature()));
118  xSec[i] *= rWeight;
119  sum+=xSec[i];
120  }
121 
122  G4double random = G4UniformRand();
123  G4double running = 0;
124  for (i = 0; i < n; i++) {
125  running += xSec[i];
126  index = theMaterial->GetElement(i)->GetIndex();
127  if(random<=running/sum) break;
128  }
129  delete [] xSec;
130  }
131 
132  //return theFission[index].ApplyYourself(aTrack);
133  //Overwrite target parameters
134  G4HadFinalState* result = theFission[index].ApplyYourself(aTrack);
135  aNucleus.SetParameters(G4ParticleHPManager::GetInstance()->GetReactionWhiteBoard()->GetTargA(),G4ParticleHPManager::GetInstance()->GetReactionWhiteBoard()->GetTargZ());
136  const G4Element* target_element = (*G4Element::GetElementTable())[index];
137  const G4Isotope* target_isotope=NULL;
138  G4int iele = target_element->GetNumberOfIsotopes();
139  for ( G4int j = 0 ; j != iele ; j++ ) {
140  target_isotope=target_element->GetIsotope( j );
141  if ( target_isotope->GetN() == G4ParticleHPManager::GetInstance()->GetReactionWhiteBoard()->GetTargA() ) break;
142  }
143  aNucleus.SetIsotope( target_isotope );
145  return result;
146 }
147 
148 const std::pair<G4double, G4double> G4FissLib::GetFatalEnergyCheckLevels() const
149 {
150  // max energy non-conservation is mass of heavy nucleus (taken from G4LFission)
151  return std::pair<G4double, G4double>(5*perCent,250*GeV);
152 }