| 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 | // $Id: G4CrossSectionDataStore.cc,v 1.16 2009/01/24 11:54:47 vnivanch Exp $
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| 27 | // GEANT4 tag $Name: geant4-09-03-cand-01 $
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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: G4CrossSectionDataStore
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| 35 | //
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| 36 | //
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| 37 | // Modifications:
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| 38 | // 23.01.2009 V.Ivanchenko add destruction of data sets
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| 39 | //
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| 40 | //
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| 41 |
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| 42 | #include "G4CrossSectionDataStore.hh"
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| 43 | #include "G4HadronicException.hh"
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| 44 | #include "G4StableIsotopes.hh"
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| 45 | #include "G4HadTmpUtil.hh"
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| 46 | #include "Randomize.hh"
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| 47 | #include "G4Nucleus.hh"
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| 48 |
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| 49 | G4CrossSectionDataStore::G4CrossSectionDataStore() :
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| 50 | NDataSetList(0), verboseLevel(0)
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| 51 | {}
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| 52 |
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| 53 | G4CrossSectionDataStore::~G4CrossSectionDataStore()
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| 54 | {}
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| 55 |
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| 56 | G4double
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| 57 | G4CrossSectionDataStore::GetCrossSection(const G4DynamicParticle* aParticle,
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| 58 | const G4Element* anElement,
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| 59 | G4double aTemperature)
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| 60 | {
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| 61 | if (NDataSetList == 0)
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| 62 | {
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| 63 | throw G4HadronicException(__FILE__, __LINE__,
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| 64 | "G4CrossSectionDataStore: no data sets registered");
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| 65 | return DBL_MIN;
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| 66 | }
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| 67 | for (G4int i = NDataSetList-1; i >= 0; i--) {
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| 68 | if (DataSetList[i]->IsApplicable(aParticle, anElement))
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| 69 | return DataSetList[i]->GetCrossSection(aParticle,anElement,aTemperature);
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| 70 | }
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| 71 | throw G4HadronicException(__FILE__, __LINE__,
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| 72 | "G4CrossSectionDataStore: no applicable data set found "
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| 73 | "for particle/element");
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| 74 | return DBL_MIN;
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| 75 | }
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| 76 |
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| 77 | G4VCrossSectionDataSet*
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| 78 | G4CrossSectionDataStore::whichDataSetInCharge(const G4DynamicParticle* aParticle,
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| 79 | const G4Element* anElement)
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| 80 | {
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| 81 | if (NDataSetList == 0)
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| 82 | {
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| 83 | throw G4HadronicException(__FILE__, __LINE__,
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| 84 | "G4CrossSectionDataStore: no data sets registered");
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| 85 | return 0;
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| 86 | }
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| 87 | for (G4int i = NDataSetList-1; i >= 0; i--) {
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| 88 | if (DataSetList[i]->IsApplicable(aParticle, anElement) )
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| 89 | {
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| 90 | return DataSetList[i];
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| 91 | }
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| 92 | }
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| 93 | throw G4HadronicException(__FILE__, __LINE__,
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| 94 | "G4CrossSectionDataStore: no applicable data set found "
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| 95 | "for particle/element");
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| 96 | return 0;
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| 97 | }
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| 98 |
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| 99 |
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| 100 | G4double
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| 101 | G4CrossSectionDataStore::GetCrossSection(const G4DynamicParticle* aParticle,
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| 102 | const G4Isotope* anIsotope,
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| 103 | G4double aTemperature)
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| 104 | {
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| 105 | if (NDataSetList == 0)
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| 106 | {
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| 107 | throw G4HadronicException(__FILE__, __LINE__,
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| 108 | "G4CrossSectionDataStore: no data sets registered");
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| 109 | return DBL_MIN;
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| 110 | }
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| 111 | for (G4int i = NDataSetList-1; i >= 0; i--) {
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| 112 | if (DataSetList[i]->IsZAApplicable(aParticle, anIsotope->GetZ(), anIsotope->GetN()))
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| 113 | return DataSetList[i]->GetIsoCrossSection(aParticle,anIsotope,aTemperature);
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| 114 | }
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| 115 | throw G4HadronicException(__FILE__, __LINE__,
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| 116 | "G4CrossSectionDataStore: no applicable data set found "
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| 117 | "for particle/element");
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| 118 | return DBL_MIN;
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| 119 | }
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| 120 |
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| 121 |
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| 122 | G4double
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| 123 | G4CrossSectionDataStore::GetCrossSection(const G4DynamicParticle* aParticle,
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| 124 | G4double Z, G4double A,
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| 125 | G4double aTemperature)
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| 126 | {
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| 127 | if (NDataSetList == 0)
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| 128 | {
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| 129 | throw G4HadronicException(__FILE__, __LINE__,
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| 130 | "G4CrossSectionDataStore: no data sets registered");
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| 131 | return DBL_MIN;
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| 132 | }
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| 133 | for (G4int i = NDataSetList-1; i >= 0; i--) {
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| 134 | if (DataSetList[i]->IsZAApplicable(aParticle, Z, A))
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| 135 | return DataSetList[i]->GetIsoZACrossSection(aParticle,Z,A,aTemperature);
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| 136 | }
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| 137 | throw G4HadronicException(__FILE__, __LINE__,
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| 138 | "G4CrossSectionDataStore: no applicable data set found "
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| 139 | "for particle/element");
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| 140 | return DBL_MIN;
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| 141 | }
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| 142 |
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| 143 |
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| 144 | G4double
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| 145 | G4CrossSectionDataStore::GetCrossSection(const G4DynamicParticle* aParticle,
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| 146 | const G4Material* aMaterial)
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| 147 | {
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| 148 | G4double sigma(0);
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| 149 | G4double aTemp = aMaterial->GetTemperature();
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| 150 | G4int nElements = aMaterial->GetNumberOfElements();
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| 151 | const G4double* theAtomsPerVolumeVector = aMaterial->GetVecNbOfAtomsPerVolume();
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| 152 | G4double xSection(0);
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| 153 |
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| 154 | for(G4int i=0; i<nElements; i++) {
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| 155 | xSection = GetCrossSection( aParticle, (*aMaterial->GetElementVector())[i], aTemp);
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| 156 | sigma += theAtomsPerVolumeVector[i] * xSection;
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| 157 | }
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| 158 |
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| 159 | return sigma;
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| 160 | }
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| 161 |
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| 162 |
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| 163 | G4Element* G4CrossSectionDataStore::SampleZandA(const G4DynamicParticle* particle,
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| 164 | const G4Material* aMaterial,
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| 165 | G4Nucleus& target)
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| 166 | {
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| 167 | G4double aTemp = aMaterial->GetTemperature();
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| 168 | const G4int nElements = aMaterial->GetNumberOfElements();
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| 169 | const G4ElementVector* theElementVector = aMaterial->GetElementVector();
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| 170 | G4Element* anElement = (*theElementVector)[0];
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| 171 | G4VCrossSectionDataSet* inCharge;
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| 172 | G4int i;
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| 173 |
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| 174 | // compounds
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| 175 | if(1 < nElements) {
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| 176 | G4double* xsec = new G4double [nElements];
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| 177 | const G4double* theAtomsPerVolumeVector = aMaterial->GetVecNbOfAtomsPerVolume();
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| 178 | G4double cross = 0.0;
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| 179 | for(i=0; i<nElements; i++) {
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| 180 | anElement= (*theElementVector)[i];
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| 181 | inCharge = whichDataSetInCharge(particle, anElement);
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| 182 | cross += theAtomsPerVolumeVector[i]*
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| 183 | inCharge->GetCrossSection(particle, anElement, aTemp);
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| 184 | xsec[i] = cross;
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| 185 | }
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| 186 | cross *= G4UniformRand();
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| 187 |
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| 188 | for(i=0; i<nElements; i++) {
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| 189 | if( cross <= xsec[i] ) {
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| 190 | anElement = (*theElementVector)[i];
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| 191 | break;
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| 192 | }
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| 193 | }
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| 194 | delete [] xsec;
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| 195 | }
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| 196 |
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| 197 | // element have been selected
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| 198 | inCharge = whichDataSetInCharge(particle, anElement);
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| 199 | G4double ZZ = anElement->GetZ();
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| 200 | G4double AA;
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| 201 |
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| 202 | // Collect abundance weighted cross sections and A values for each isotope
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| 203 | // in each element
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| 204 |
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| 205 | const G4int nIsoPerElement = anElement->GetNumberOfIsotopes();
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| 206 |
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| 207 | // user-defined isotope abundances
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| 208 | if (0 < nIsoPerElement) {
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| 209 | G4IsotopeVector* isoVector = anElement->GetIsotopeVector();
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| 210 | AA = G4double((*isoVector)[0]->GetN());
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| 211 | if(1 < nIsoPerElement) {
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| 212 |
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| 213 | G4double* xsec = new G4double [nIsoPerElement];
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| 214 | G4double iso_xs = 0.0;
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| 215 | G4double cross = 0.0;
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| 216 |
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| 217 | G4double* abundVector = anElement->GetRelativeAbundanceVector();
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| 218 | G4bool elementXS = false;
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| 219 | for (i = 0; i<nIsoPerElement; i++) {
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| 220 | if (inCharge->IsZAApplicable(particle, ZZ, G4double((*isoVector)[i]->GetN()))) {
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| 221 | iso_xs = inCharge->GetIsoCrossSection(particle, (*isoVector)[i], aTemp);
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| 222 | } else if (elementXS == false) {
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| 223 | iso_xs = inCharge->GetCrossSection(particle, anElement, aTemp);
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| 224 | elementXS = true;
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| 225 | }
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| 226 |
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| 227 | cross += abundVector[i]*iso_xs;
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| 228 | xsec[i] = cross;
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| 229 | }
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| 230 | cross *= G4UniformRand();
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| 231 | for (i = 0; i<nIsoPerElement; i++) {
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| 232 | if(cross <= xsec[i]) {
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| 233 | AA = G4double((*isoVector)[i]->GetN());
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| 234 | break;
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| 235 | }
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| 236 | }
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| 237 | delete [] xsec;
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| 238 | }
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| 239 | // natural abundances
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| 240 | } else {
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| 241 |
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| 242 | G4StableIsotopes theDefaultIsotopes;
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| 243 | G4int Z = G4int(ZZ + 0.5);
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| 244 | const G4int nIso = theDefaultIsotopes.GetNumberOfIsotopes(Z);
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| 245 | G4int index = theDefaultIsotopes.GetFirstIsotope(Z);
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| 246 | AA = G4double(theDefaultIsotopes.GetIsotopeNucleonCount(index));
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| 247 |
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| 248 | if(1 < nIso) {
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| 249 |
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| 250 | G4double* xsec = new G4double [nIso];
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| 251 | G4double iso_xs = 0.0;
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| 252 | G4double cross = 0.0;
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| 253 | G4bool elementXS= false;
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| 254 |
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| 255 | for (i = 0; i<nIso; i++) {
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| 256 | AA = G4double(theDefaultIsotopes.GetIsotopeNucleonCount(index+i));
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| 257 | if (inCharge->IsZAApplicable(particle, ZZ, AA )) {
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| 258 | iso_xs = inCharge->GetIsoZACrossSection(particle, ZZ, AA, aTemp);
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| 259 | } else if (elementXS == false) {
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| 260 | iso_xs = inCharge->GetCrossSection(particle, anElement, aTemp);
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| 261 | elementXS = true;
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| 262 | }
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| 263 | cross += theDefaultIsotopes.GetAbundance(index+i)*iso_xs;
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| 264 | xsec[i] = cross;
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| 265 | }
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| 266 | cross *= G4UniformRand();
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| 267 | for (i = 0; i<nIso; i++) {
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| 268 | if(cross <= xsec[i]) {
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| 269 | AA = G4double(theDefaultIsotopes.GetIsotopeNucleonCount(index+i));
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| 270 | break;
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| 271 | }
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| 272 | }
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| 273 | delete [] xsec;
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| 274 | }
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| 275 | }
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| 276 | //G4cout << "XS: " << particle->GetDefinition()->GetParticleName()
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| 277 | // << " e(GeV)= " << particle->GetKineticEnergy()/GeV
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| 278 | // << " in " << aMaterial->GetName()
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| 279 | // << " ZZ= " << ZZ << " AA= " << AA << " " << anElement->GetName() << G4endl;
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| 280 |
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| 281 | target.SetParameters(AA, ZZ);
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| 282 | return anElement;
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| 283 | }
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| 284 |
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| 285 | /*
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| 286 | G4Element* G4CrossSectionDataStore::SampleZandA(const G4DynamicParticle* particle,
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| 287 | const G4Material* aMaterial,
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| 288 | G4Nucleus& target)
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| 289 | {
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| 290 | static G4StableIsotopes theDefaultIsotopes; // natural abundances and
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| 291 | // stable isotopes
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| 292 | G4double aTemp = aMaterial->GetTemperature();
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| 293 | G4int nElements = aMaterial->GetNumberOfElements();
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| 294 | const G4ElementVector* theElementVector = aMaterial->GetElementVector();
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| 295 | const G4double* theAtomsPerVolumeVector = aMaterial->GetVecNbOfAtomsPerVolume();
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| 296 | std::vector<std::vector<G4double> > awicsPerElement;
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| 297 | std::vector<std::vector<G4double> > AvaluesPerElement;
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| 298 | G4Element* anElement;
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| 299 |
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| 300 | // Collect abundance weighted cross sections and A values for each isotope
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| 301 | // in each element
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| 302 |
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| 303 | for (G4int i = 0; i < nElements; i++) {
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| 304 | anElement = (*theElementVector)[i];
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| 305 | G4int nIsoPerElement = anElement->GetNumberOfIsotopes();
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| 306 | std::vector<G4double> isoholder;
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| 307 | std::vector<G4double> aholder;
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| 308 | G4double iso_xs = DBL_MIN;
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| 309 |
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| 310 | if (nIsoPerElement) { // user-defined isotope abundances
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| 311 | G4IsotopeVector* isoVector = anElement->GetIsotopeVector();
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| 312 | G4double* abundVector = anElement->GetRelativeAbundanceVector();
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| 313 | G4VCrossSectionDataSet* inCharge = whichDataSetInCharge(particle, anElement);
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| 314 | G4bool elementXS = false;
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| 315 | for (G4int j = 0; j < nIsoPerElement; j++) {
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| 316 | if (inCharge->IsZAApplicable(particle, (*isoVector)[j]->GetZ(),
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| 317 | (*isoVector)[j]->GetN() ) ) {
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| 318 | iso_xs = inCharge->GetIsoCrossSection(particle, (*isoVector)[j], aTemp);
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| 319 | } else if (elementXS == false) {
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| 320 | iso_xs = inCharge->GetCrossSection(particle, anElement, aTemp);
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| 321 | elementXS = true;
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| 322 | }
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| 323 |
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| 324 | isoholder.push_back(abundVector[j]*iso_xs);
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| 325 | aholder.push_back(G4double((*isoVector)[j]->GetN()));
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| 326 | }
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| 327 |
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| 328 | } else { // natural abundances
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| 329 | G4int ZZ = G4lrint(anElement->GetZ());
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| 330 | nIsoPerElement = theDefaultIsotopes.GetNumberOfIsotopes(ZZ);
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| 331 | G4int index = theDefaultIsotopes.GetFirstIsotope(ZZ);
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| 332 | G4double AA;
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| 333 | G4double abundance;
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| 334 |
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| 335 | G4VCrossSectionDataSet* inCharge = whichDataSetInCharge(particle, anElement);
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| 336 | G4bool elementXS = false;
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| 337 |
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| 338 | for (G4int j = 0; j < nIsoPerElement; j++) {
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| 339 | AA = G4double(theDefaultIsotopes.GetIsotopeNucleonCount(index+j));
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| 340 | aholder.push_back(AA);
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| 341 | if (inCharge->IsZAApplicable(particle, G4double(ZZ), AA) ) {
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| 342 | iso_xs = inCharge->GetIsoZACrossSection(particle, G4double(ZZ), AA, aTemp);
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| 343 | } else if (elementXS == false) {
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| 344 | iso_xs = inCharge->GetCrossSection(particle, anElement, aTemp);
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| 345 | elementXS = true;
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| 346 | }
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| 347 | abundance = theDefaultIsotopes.GetAbundance(index+j)/100.0;
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| 348 | isoholder.push_back(abundance*iso_xs);
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| 349 | }
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| 350 | }
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| 351 |
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| 352 | awicsPerElement.push_back(isoholder);
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| 353 | AvaluesPerElement.push_back(aholder);
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| 354 | }
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| 355 |
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| 356 | // Calculate running sums for isotope selection
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| 357 |
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| 358 | G4double crossSectionTotal = 0;
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| 359 | G4double xSectionPerElement;
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| 360 | std::vector<G4double> runningSum;
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| 361 |
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| 362 | for (G4int i=0; i < nElements; i++) {
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| 363 | xSectionPerElement = 0;
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| 364 | for (G4int j=0; j < G4int(awicsPerElement[i].size()); j++)
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| 365 | xSectionPerElement += awicsPerElement[i][j];
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| 366 | runningSum.push_back(theAtomsPerVolumeVector[i]*xSectionPerElement);
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| 367 | crossSectionTotal += runningSum[i];
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| 368 | }
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| 369 |
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| 370 | // Compare random number to running sum over element xc to choose Z
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| 371 |
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| 372 | // Initialize Z and A to first element and first isotope in case
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| 373 | // cross section is zero
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| 374 |
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| 375 | anElement = (*theElementVector)[0];
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| 376 | G4double ZZ = anElement->GetZ();
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| 377 | G4double AA = AvaluesPerElement[0][0];
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| 378 | if (crossSectionTotal != 0.) {
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| 379 | G4double random = G4UniformRand();
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| 380 | for(G4int i=0; i < nElements; i++) {
|
|---|
| 381 | if(i!=0) runningSum[i] += runningSum[i-1];
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|---|
| 382 | if(random <= runningSum[i]/crossSectionTotal) {
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|---|
| 383 | anElement = (*theElementVector)[i];
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|---|
| 384 | ZZ = anElement->GetZ();
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|---|
| 385 |
|
|---|
| 386 | // Compare random number to running sum over isotope xc to choose A
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|---|
| 387 |
|
|---|
| 388 | G4int nIso = awicsPerElement[i].size();
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|---|
| 389 | G4double* running = new G4double[nIso];
|
|---|
| 390 | for (G4int j=0; j < nIso; j++) {
|
|---|
| 391 | running[j] = awicsPerElement[i][j];
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|---|
| 392 | if(j!=0) running[j] += running[j-1];
|
|---|
| 393 | }
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|---|
| 394 |
|
|---|
| 395 | G4double trial = G4UniformRand();
|
|---|
| 396 | for (G4int j=0; j < nIso; j++) {
|
|---|
| 397 | AA = AvaluesPerElement[i][j];
|
|---|
| 398 | if (trial <= running[j]/running[nIso-1]) break;
|
|---|
| 399 | }
|
|---|
| 400 | delete [] running;
|
|---|
| 401 | break;
|
|---|
| 402 | }
|
|---|
| 403 | }
|
|---|
| 404 | }
|
|---|
| 405 |
|
|---|
| 406 | //G4cout << "XS: " << particle->GetDefinition()->GetParticleName()
|
|---|
| 407 | // << " e(GeV)= " << particle->GetKineticEnergy()/GeV
|
|---|
| 408 | // << " in " << aMaterial->GetName()
|
|---|
| 409 | // << " ZZ= " << ZZ << " AA= " << AA << " " << anElement->GetName() << G4endl;
|
|---|
| 410 |
|
|---|
| 411 | target.SetParameters(AA, ZZ);
|
|---|
| 412 | return anElement;
|
|---|
| 413 | }
|
|---|
| 414 |
|
|---|
| 415 | std::pair<G4double, G4double>
|
|---|
| 416 | G4CrossSectionDataStore::SelectRandomIsotope(const G4DynamicParticle* particle,
|
|---|
| 417 | const G4Material* aMaterial)
|
|---|
| 418 | {
|
|---|
| 419 | static G4StableIsotopes theDefaultIsotopes; // natural abundances and
|
|---|
| 420 | // stable isotopes
|
|---|
| 421 | G4double aTemp = aMaterial->GetTemperature();
|
|---|
| 422 | G4int nElements = aMaterial->GetNumberOfElements();
|
|---|
| 423 | const G4ElementVector* theElementVector = aMaterial->GetElementVector();
|
|---|
| 424 | const G4double* theAtomsPerVolumeVector = aMaterial->GetVecNbOfAtomsPerVolume();
|
|---|
| 425 | std::vector<std::vector<G4double> > awicsPerElement;
|
|---|
| 426 | std::vector<std::vector<G4double> > AvaluesPerElement;
|
|---|
| 427 | G4Element* anElement;
|
|---|
| 428 |
|
|---|
| 429 | // Collect abundance weighted cross sections and A values for each isotope
|
|---|
| 430 | // in each element
|
|---|
| 431 |
|
|---|
| 432 | for (G4int i = 0; i < nElements; i++) {
|
|---|
| 433 | anElement = (*theElementVector)[i];
|
|---|
| 434 | G4int nIsoPerElement = anElement->GetNumberOfIsotopes();
|
|---|
| 435 | std::vector<G4double> isoholder;
|
|---|
| 436 | std::vector<G4double> aholder;
|
|---|
| 437 | G4double iso_xs = DBL_MIN;
|
|---|
| 438 |
|
|---|
| 439 | if (nIsoPerElement) { // user-defined isotope abundances
|
|---|
| 440 | G4IsotopeVector* isoVector = anElement->GetIsotopeVector();
|
|---|
| 441 | G4double* abundVector = anElement->GetRelativeAbundanceVector();
|
|---|
| 442 | G4VCrossSectionDataSet* inCharge = whichDataSetInCharge(particle, anElement);
|
|---|
| 443 | G4bool elementXS = false;
|
|---|
| 444 | for (G4int j = 0; j < nIsoPerElement; j++) {
|
|---|
| 445 | if (inCharge->IsZAApplicable(particle, (*isoVector)[j]->GetZ(),
|
|---|
| 446 | (*isoVector)[j]->GetN() ) ) {
|
|---|
| 447 | iso_xs = inCharge->GetIsoCrossSection(particle, (*isoVector)[j], aTemp);
|
|---|
| 448 | } else if (elementXS == false) {
|
|---|
| 449 | iso_xs = inCharge->GetCrossSection(particle, anElement, aTemp);
|
|---|
| 450 | elementXS = true;
|
|---|
| 451 | }
|
|---|
| 452 |
|
|---|
| 453 | isoholder.push_back(abundVector[j]*iso_xs);
|
|---|
| 454 | aholder.push_back(G4double((*isoVector)[j]->GetN()));
|
|---|
| 455 | }
|
|---|
| 456 |
|
|---|
| 457 | } else { // natural abundances
|
|---|
| 458 | G4int ZZ = G4lrint(anElement->GetZ());
|
|---|
| 459 | nIsoPerElement = theDefaultIsotopes.GetNumberOfIsotopes(ZZ);
|
|---|
| 460 | G4int index = theDefaultIsotopes.GetFirstIsotope(ZZ);
|
|---|
| 461 | G4double AA;
|
|---|
| 462 | G4double abundance;
|
|---|
| 463 |
|
|---|
| 464 | G4VCrossSectionDataSet* inCharge = whichDataSetInCharge(particle, anElement);
|
|---|
| 465 | G4bool elementXS = false;
|
|---|
| 466 |
|
|---|
| 467 | for (G4int j = 0; j < nIsoPerElement; j++) {
|
|---|
| 468 | AA = G4double(theDefaultIsotopes.GetIsotopeNucleonCount(index+j));
|
|---|
| 469 | aholder.push_back(AA);
|
|---|
| 470 | if (inCharge->IsZAApplicable(particle, G4double(ZZ), AA) ) {
|
|---|
| 471 | iso_xs = inCharge->GetIsoZACrossSection(particle, G4double(ZZ), AA, aTemp);
|
|---|
| 472 | } else if (elementXS == false) {
|
|---|
| 473 | iso_xs = inCharge->GetCrossSection(particle, anElement, aTemp);
|
|---|
| 474 | elementXS = true;
|
|---|
| 475 | }
|
|---|
| 476 | abundance = theDefaultIsotopes.GetAbundance(index+j)/100.0;
|
|---|
| 477 | isoholder.push_back(abundance*iso_xs);
|
|---|
| 478 | }
|
|---|
| 479 | }
|
|---|
| 480 |
|
|---|
| 481 | awicsPerElement.push_back(isoholder);
|
|---|
| 482 | AvaluesPerElement.push_back(aholder);
|
|---|
| 483 | }
|
|---|
| 484 |
|
|---|
| 485 | // Calculate running sums for isotope selection
|
|---|
| 486 |
|
|---|
| 487 | G4double crossSectionTotal = 0;
|
|---|
| 488 | G4double xSectionPerElement;
|
|---|
| 489 | std::vector<G4double> runningSum;
|
|---|
| 490 |
|
|---|
| 491 | for (G4int i=0; i < nElements; i++) {
|
|---|
| 492 | xSectionPerElement = 0;
|
|---|
| 493 | for (G4int j=0; j < G4int(awicsPerElement[i].size()); j++)
|
|---|
| 494 | xSectionPerElement += awicsPerElement[i][j];
|
|---|
| 495 | runningSum.push_back(theAtomsPerVolumeVector[i]*xSectionPerElement);
|
|---|
| 496 | crossSectionTotal += runningSum[i];
|
|---|
| 497 | }
|
|---|
| 498 |
|
|---|
| 499 | // Compare random number to running sum over element xc to choose Z
|
|---|
| 500 |
|
|---|
| 501 | // Initialize Z and A to first element and first isotope in case
|
|---|
| 502 | // cross section is zero
|
|---|
| 503 |
|
|---|
| 504 | G4double ZZ = (*theElementVector)[0]->GetZ();
|
|---|
| 505 | G4double AA = AvaluesPerElement[0][0];
|
|---|
| 506 | if (crossSectionTotal != 0.) {
|
|---|
| 507 | G4double random = G4UniformRand();
|
|---|
| 508 | for(G4int i=0; i < nElements; i++) {
|
|---|
| 509 | if(i!=0) runningSum[i] += runningSum[i-1];
|
|---|
| 510 | if(random <= runningSum[i]/crossSectionTotal) {
|
|---|
| 511 | ZZ = ((*theElementVector)[i])->GetZ();
|
|---|
| 512 |
|
|---|
| 513 | // Compare random number to running sum over isotope xc to choose A
|
|---|
| 514 |
|
|---|
| 515 | G4int nIso = awicsPerElement[i].size();
|
|---|
| 516 | G4double* running = new G4double[nIso];
|
|---|
| 517 | for (G4int j=0; j < nIso; j++) {
|
|---|
| 518 | running[j] = awicsPerElement[i][j];
|
|---|
| 519 | if(j!=0) running[j] += running[j-1];
|
|---|
| 520 | }
|
|---|
| 521 |
|
|---|
| 522 | G4double trial = G4UniformRand();
|
|---|
| 523 | for (G4int j=0; j < nIso; j++) {
|
|---|
| 524 | AA = AvaluesPerElement[i][j];
|
|---|
| 525 | if (trial <= running[j]/running[nIso-1]) break;
|
|---|
| 526 | }
|
|---|
| 527 | delete [] running;
|
|---|
| 528 | break;
|
|---|
| 529 | }
|
|---|
| 530 | }
|
|---|
| 531 | }
|
|---|
| 532 | return std::pair<G4double, G4double>(ZZ, AA);
|
|---|
| 533 | }
|
|---|
| 534 | */
|
|---|
| 535 |
|
|---|
| 536 | void
|
|---|
| 537 | G4CrossSectionDataStore::AddDataSet(G4VCrossSectionDataSet* aDataSet)
|
|---|
| 538 | {
|
|---|
| 539 | DataSetList.push_back(aDataSet);
|
|---|
| 540 | NDataSetList++;
|
|---|
| 541 | }
|
|---|
| 542 |
|
|---|
| 543 | void
|
|---|
| 544 | G4CrossSectionDataStore::
|
|---|
| 545 | BuildPhysicsTable(const G4ParticleDefinition& aParticleType)
|
|---|
| 546 | {
|
|---|
| 547 | if(NDataSetList > 0) {
|
|---|
| 548 | for (G4int i=0; i<NDataSetList; i++) {
|
|---|
| 549 | DataSetList[i]->BuildPhysicsTable(aParticleType);
|
|---|
| 550 | }
|
|---|
| 551 | }
|
|---|
| 552 | }
|
|---|
| 553 |
|
|---|
| 554 |
|
|---|
| 555 | void
|
|---|
| 556 | G4CrossSectionDataStore::
|
|---|
| 557 | DumpPhysicsTable(const G4ParticleDefinition& aParticleType)
|
|---|
| 558 | {
|
|---|
| 559 | if (NDataSetList == 0) {
|
|---|
| 560 | G4cout << "WARNING - G4CrossSectionDataStore::DumpPhysicsTable: "
|
|---|
| 561 | << " no data sets registered"<<G4endl;
|
|---|
| 562 | return;
|
|---|
| 563 | }
|
|---|
| 564 | for (G4int i = NDataSetList-1; i >= 0; i--) {
|
|---|
| 565 | DataSetList[i]->DumpPhysicsTable(aParticleType);
|
|---|
| 566 | }
|
|---|
| 567 | }
|
|---|
