| 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 $ |
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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++) { |
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| 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 | |
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| 386 | // Compare random number to running sum over isotope xc to choose A |
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| 387 | |
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| 388 | G4int nIso = awicsPerElement[i].size(); |
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| 389 | G4double* running = new G4double[nIso]; |
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| 390 | for (G4int j=0; j < nIso; j++) { |
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| 391 | running[j] = awicsPerElement[i][j]; |
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| 392 | if(j!=0) running[j] += running[j-1]; |
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| 393 | } |
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| 394 | |
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| 395 | G4double trial = G4UniformRand(); |
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| 396 | for (G4int j=0; j < nIso; j++) { |
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| 397 | AA = AvaluesPerElement[i][j]; |
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| 398 | if (trial <= running[j]/running[nIso-1]) break; |
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| 399 | } |
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| 400 | delete [] running; |
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| 401 | break; |
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| 402 | } |
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| 403 | } |
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| 404 | } |
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| 405 | |
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| 406 | //G4cout << "XS: " << particle->GetDefinition()->GetParticleName() |
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| 407 | // << " e(GeV)= " << particle->GetKineticEnergy()/GeV |
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| 408 | // << " in " << aMaterial->GetName() |
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| 409 | // << " ZZ= " << ZZ << " AA= " << AA << " " << anElement->GetName() << G4endl; |
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| 410 | |
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| 411 | target.SetParameters(AA, ZZ); |
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| 412 | return anElement; |
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| 413 | } |
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| 414 | |
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| 415 | std::pair<G4double, G4double> |
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| 416 | G4CrossSectionDataStore::SelectRandomIsotope(const G4DynamicParticle* particle, |
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| 417 | const G4Material* aMaterial) |
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| 418 | { |
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| 419 | static G4StableIsotopes theDefaultIsotopes; // natural abundances and |
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| 420 | // stable isotopes |
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| 421 | G4double aTemp = aMaterial->GetTemperature(); |
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| 422 | G4int nElements = aMaterial->GetNumberOfElements(); |
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| 423 | const G4ElementVector* theElementVector = aMaterial->GetElementVector(); |
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| 424 | const G4double* theAtomsPerVolumeVector = aMaterial->GetVecNbOfAtomsPerVolume(); |
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| 425 | std::vector<std::vector<G4double> > awicsPerElement; |
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| 426 | std::vector<std::vector<G4double> > AvaluesPerElement; |
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| 427 | G4Element* anElement; |
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| 428 | |
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| 429 | // Collect abundance weighted cross sections and A values for each isotope |
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| 430 | // in each element |
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| 431 | |
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| 432 | for (G4int i = 0; i < nElements; i++) { |
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| 433 | anElement = (*theElementVector)[i]; |
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| 434 | G4int nIsoPerElement = anElement->GetNumberOfIsotopes(); |
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| 435 | std::vector<G4double> isoholder; |
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| 436 | std::vector<G4double> aholder; |
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| 437 | G4double iso_xs = DBL_MIN; |
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| 438 | |
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| 439 | if (nIsoPerElement) { // user-defined isotope abundances |
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| 440 | G4IsotopeVector* isoVector = anElement->GetIsotopeVector(); |
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| 441 | G4double* abundVector = anElement->GetRelativeAbundanceVector(); |
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| 442 | G4VCrossSectionDataSet* inCharge = whichDataSetInCharge(particle, anElement); |
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| 443 | G4bool elementXS = false; |
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| 444 | for (G4int j = 0; j < nIsoPerElement; j++) { |
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| 445 | if (inCharge->IsZAApplicable(particle, (*isoVector)[j]->GetZ(), |
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| 446 | (*isoVector)[j]->GetN() ) ) { |
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| 447 | iso_xs = inCharge->GetIsoCrossSection(particle, (*isoVector)[j], aTemp); |
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| 448 | } else if (elementXS == false) { |
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| 449 | iso_xs = inCharge->GetCrossSection(particle, anElement, aTemp); |
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| 450 | elementXS = true; |
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| 451 | } |
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| 452 | |
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| 453 | isoholder.push_back(abundVector[j]*iso_xs); |
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| 454 | aholder.push_back(G4double((*isoVector)[j]->GetN())); |
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| 455 | } |
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| 456 | |
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| 457 | } else { // natural abundances |
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| 458 | G4int ZZ = G4lrint(anElement->GetZ()); |
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| 459 | nIsoPerElement = theDefaultIsotopes.GetNumberOfIsotopes(ZZ); |
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| 460 | G4int index = theDefaultIsotopes.GetFirstIsotope(ZZ); |
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| 461 | G4double AA; |
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| 462 | G4double abundance; |
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| 463 | |
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| 464 | G4VCrossSectionDataSet* inCharge = whichDataSetInCharge(particle, anElement); |
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| 465 | G4bool elementXS = false; |
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| 466 | |
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| 467 | for (G4int j = 0; j < nIsoPerElement; j++) { |
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| 468 | AA = G4double(theDefaultIsotopes.GetIsotopeNucleonCount(index+j)); |
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| 469 | aholder.push_back(AA); |
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| 470 | if (inCharge->IsZAApplicable(particle, G4double(ZZ), AA) ) { |
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| 471 | iso_xs = inCharge->GetIsoZACrossSection(particle, G4double(ZZ), AA, aTemp); |
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| 472 | } else if (elementXS == false) { |
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| 473 | iso_xs = inCharge->GetCrossSection(particle, anElement, aTemp); |
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| 474 | elementXS = true; |
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| 475 | } |
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| 476 | abundance = theDefaultIsotopes.GetAbundance(index+j)/100.0; |
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| 477 | isoholder.push_back(abundance*iso_xs); |
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| 478 | } |
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| 479 | } |
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| 480 | |
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| 481 | awicsPerElement.push_back(isoholder); |
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| 482 | AvaluesPerElement.push_back(aholder); |
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| 483 | } |
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| 484 | |
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| 485 | // Calculate running sums for isotope selection |
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| 486 | |
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| 487 | G4double crossSectionTotal = 0; |
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| 488 | G4double xSectionPerElement; |
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| 489 | std::vector<G4double> runningSum; |
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| 490 | |
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| 491 | for (G4int i=0; i < nElements; i++) { |
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| 492 | xSectionPerElement = 0; |
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| 493 | for (G4int j=0; j < G4int(awicsPerElement[i].size()); j++) |
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| 494 | xSectionPerElement += awicsPerElement[i][j]; |
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| 495 | runningSum.push_back(theAtomsPerVolumeVector[i]*xSectionPerElement); |
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| 496 | crossSectionTotal += runningSum[i]; |
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| 497 | } |
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| 498 | |
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| 499 | // Compare random number to running sum over element xc to choose Z |
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| 500 | |
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| 501 | // Initialize Z and A to first element and first isotope in case |
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| 502 | // cross section is zero |
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| 503 | |
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| 504 | G4double ZZ = (*theElementVector)[0]->GetZ(); |
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| 505 | G4double AA = AvaluesPerElement[0][0]; |
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| 506 | if (crossSectionTotal != 0.) { |
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| 507 | G4double random = G4UniformRand(); |
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| 508 | for(G4int i=0; i < nElements; i++) { |
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| 509 | if(i!=0) runningSum[i] += runningSum[i-1]; |
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| 510 | if(random <= runningSum[i]/crossSectionTotal) { |
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| 511 | ZZ = ((*theElementVector)[i])->GetZ(); |
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| 512 | |
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| 513 | // Compare random number to running sum over isotope xc to choose A |
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| 514 | |
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| 515 | G4int nIso = awicsPerElement[i].size(); |
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| 516 | G4double* running = new G4double[nIso]; |
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| 517 | for (G4int j=0; j < nIso; j++) { |
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| 518 | running[j] = awicsPerElement[i][j]; |
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| 519 | if(j!=0) running[j] += running[j-1]; |
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| 520 | } |
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| 521 | |
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| 522 | G4double trial = G4UniformRand(); |
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| 523 | for (G4int j=0; j < nIso; j++) { |
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| 524 | AA = AvaluesPerElement[i][j]; |
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| 525 | if (trial <= running[j]/running[nIso-1]) break; |
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| 526 | } |
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| 527 | delete [] running; |
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| 528 | break; |
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| 529 | } |
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| 530 | } |
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| 531 | } |
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| 532 | return std::pair<G4double, G4double>(ZZ, AA); |
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| 533 | } |
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| 534 | */ |
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| 535 | |
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| 536 | void |
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| 537 | G4CrossSectionDataStore::AddDataSet(G4VCrossSectionDataSet* aDataSet) |
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| 538 | { |
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| 539 | DataSetList.push_back(aDataSet); |
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| 540 | NDataSetList++; |
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| 541 | } |
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| 542 | |
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| 543 | void |
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| 544 | G4CrossSectionDataStore:: |
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| 545 | BuildPhysicsTable(const G4ParticleDefinition& aParticleType) |
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| 546 | { |
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| 547 | if(NDataSetList > 0) { |
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| 548 | for (G4int i=0; i<NDataSetList; i++) { |
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| 549 | DataSetList[i]->BuildPhysicsTable(aParticleType); |
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| 550 | } |
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| 551 | } |
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| 552 | } |
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| 553 | |
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| 554 | |
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| 555 | void |
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| 556 | G4CrossSectionDataStore:: |
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| 557 | DumpPhysicsTable(const G4ParticleDefinition& aParticleType) |
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| 558 | { |
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| 559 | if (NDataSetList == 0) { |
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| 560 | G4cout << "WARNING - G4CrossSectionDataStore::DumpPhysicsTable: " |
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| 561 | << " no data sets registered"<<G4endl; |
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| 562 | return; |
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| 563 | } |
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| 564 | for (G4int i = NDataSetList-1; i >= 0; i--) { |
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| 565 | DataSetList[i]->DumpPhysicsTable(aParticleType); |
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| 566 | } |
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| 567 | } |
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