[968] | 1 | // ******************************************************************** |
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| 2 | // * License and Disclaimer * |
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| 3 | // * * |
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| 4 | // * The Geant4 software is copyright of the Copyright Holders of * |
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| 5 | // * the Geant4 Collaboration. It is provided under the terms and * |
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| 6 | // * conditions of the Geant4 Software License, included in the file * |
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| 7 | // * LICENSE and available at http://cern.ch/geant4/license . These * |
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| 8 | // * include a list of copyright holders. * |
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| 9 | // * * |
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| 10 | // * Neither the authors of this software system, nor their employing * |
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| 11 | // * institutes,nor the agencies providing financial support for this * |
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| 12 | // * work make any representation or warranty, express or implied, * |
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| 13 | // * regarding this software system or assume any liability for its * |
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| 14 | // * use. Please see the license in the file LICENSE and URL above * |
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| 15 | // * for the full disclaimer and the limitation of liability. * |
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| 16 | // * * |
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| 17 | // * This code implementation is the result of the scientific and * |
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| 18 | // * technical work of the GEANT4 collaboration. * |
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| 19 | // * By using, copying, modifying or distributing the software (or * |
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| 20 | // * any work based on the software) you agree to acknowledge its * |
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| 21 | // * use in resulting scientific publications, and indicate your * |
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| 22 | // * acceptance of all terms of the Geant4 Software license. * |
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| 23 | // ******************************************************************** |
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| 24 | // |
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| 25 | // $Id: G4DNABornIonisationModel.cc,v 1.4 2009/02/16 11:00:11 sincerti Exp $ |
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| 26 | // GEANT4 tag $Name: geant4-09-02-ref-02 $ |
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| 27 | // |
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| 28 | |
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| 29 | #include "G4DNABornIonisationModel.hh" |
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| 30 | |
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| 31 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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| 32 | |
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| 33 | using namespace std; |
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| 34 | |
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| 35 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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| 36 | |
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| 37 | G4DNABornIonisationModel::G4DNABornIonisationModel(const G4ParticleDefinition*, |
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| 38 | const G4String& nam) |
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| 39 | :G4VEmModel(nam),isInitialised(false) |
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| 40 | { |
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| 41 | verboseLevel= 0; |
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| 42 | // Verbosity scale: |
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| 43 | // 0 = nothing |
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| 44 | // 1 = warning for energy non-conservation |
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| 45 | // 2 = details of energy budget |
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| 46 | // 3 = calculation of cross sections, file openings, sampling of atoms |
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| 47 | // 4 = entering in methods |
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| 48 | |
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| 49 | G4cout << "Born ionisation model is constructed " << G4endl; |
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| 50 | } |
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| 51 | |
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| 52 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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| 53 | |
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| 54 | G4DNABornIonisationModel::~G4DNABornIonisationModel() |
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| 55 | { |
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| 56 | // Cross section |
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| 57 | |
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| 58 | std::map< G4String,G4DNACrossSectionDataSet*,std::less<G4String> >::iterator pos; |
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| 59 | for (pos = tableData.begin(); pos != tableData.end(); ++pos) |
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| 60 | { |
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| 61 | G4DNACrossSectionDataSet* table = pos->second; |
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| 62 | delete table; |
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| 63 | } |
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| 64 | |
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| 65 | // Final state |
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| 66 | |
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| 67 | eVecm.clear(); |
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| 68 | pVecm.clear(); |
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| 69 | |
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| 70 | } |
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| 71 | |
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| 72 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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| 73 | |
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| 74 | void G4DNABornIonisationModel::Initialise(const G4ParticleDefinition* particle, |
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| 75 | const G4DataVector& /*cuts*/) |
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| 76 | { |
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| 77 | |
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| 78 | if (verboseLevel > 3) |
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| 79 | G4cout << "Calling G4DNABornIonisationModel::Initialise()" << G4endl; |
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| 80 | |
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| 81 | // Energy limits |
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| 82 | |
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| 83 | G4String fileElectron("dna/sigma_ionisation_e_born"); |
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| 84 | G4String fileProton("dna/sigma_ionisation_p_born"); |
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| 85 | |
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| 86 | G4ParticleDefinition* electronDef = G4Electron::ElectronDefinition(); |
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| 87 | G4ParticleDefinition* protonDef = G4Proton::ProtonDefinition(); |
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| 88 | |
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| 89 | G4String electron; |
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| 90 | G4String proton; |
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| 91 | |
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| 92 | G4double scaleFactor = (1.e-22 / 3.343) * m*m; |
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| 93 | |
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| 94 | char *path = getenv("G4LEDATA"); |
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| 95 | |
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| 96 | if (electronDef != 0) |
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| 97 | { |
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| 98 | electron = electronDef->GetParticleName(); |
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| 99 | |
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| 100 | tableFile[electron] = fileElectron; |
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| 101 | |
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| 102 | lowEnergyLimit[electron] = 12.61 * eV; |
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| 103 | highEnergyLimit[electron] = 30. * keV; |
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| 104 | |
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| 105 | // Cross section |
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| 106 | |
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| 107 | G4DNACrossSectionDataSet* tableE = new G4DNACrossSectionDataSet(new G4LogLogInterpolation, eV,scaleFactor ); |
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| 108 | tableE->LoadData(fileElectron); |
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| 109 | |
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| 110 | tableData[electron] = tableE; |
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| 111 | |
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| 112 | // Final state |
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| 113 | |
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| 114 | std::ostringstream eFullFileName; |
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| 115 | eFullFileName << path << "/dna/sigmadiff_ionisation_e_born.dat"; |
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| 116 | std::ifstream eDiffCrossSection(eFullFileName.str().c_str()); |
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| 117 | |
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| 118 | if (!eDiffCrossSection) |
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| 119 | { |
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| 120 | G4Exception("G4DNABornIonisationModel::ERROR OPENING electron DATA FILE"); |
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| 121 | } |
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| 122 | |
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| 123 | eTdummyVec.push_back(0.); |
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| 124 | while(!eDiffCrossSection.eof()) |
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| 125 | { |
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| 126 | double tDummy; |
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| 127 | double eDummy; |
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| 128 | eDiffCrossSection>>tDummy>>eDummy; |
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| 129 | if (tDummy != eTdummyVec.back()) eTdummyVec.push_back(tDummy); |
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| 130 | for (int j=0; j<5; j++) |
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| 131 | { |
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| 132 | eDiffCrossSection>>eDiffCrossSectionData[j][tDummy][eDummy]; |
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| 133 | |
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| 134 | // SI - only if eof is not reached ! |
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| 135 | if (!eDiffCrossSection.eof()) eDiffCrossSectionData[j][tDummy][eDummy]*=scaleFactor; |
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| 136 | |
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| 137 | eVecm[tDummy].push_back(eDummy); |
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| 138 | |
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| 139 | } |
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| 140 | } |
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| 141 | |
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| 142 | // |
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| 143 | } |
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| 144 | else |
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| 145 | { |
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| 146 | G4Exception("G4DNABornIonisationModel::Initialise(): electron is not defined"); |
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| 147 | } |
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| 148 | |
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| 149 | if (protonDef != 0) |
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| 150 | { |
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| 151 | proton = protonDef->GetParticleName(); |
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| 152 | |
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| 153 | tableFile[proton] = fileProton; |
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| 154 | |
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| 155 | lowEnergyLimit[proton] = 500. * keV; |
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| 156 | highEnergyLimit[proton] = 10. * MeV; |
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| 157 | |
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| 158 | // Cross section |
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| 159 | |
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| 160 | G4DNACrossSectionDataSet* tableP = new G4DNACrossSectionDataSet(new G4LogLogInterpolation, eV,scaleFactor ); |
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| 161 | tableP->LoadData(fileProton); |
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| 162 | |
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| 163 | tableData[proton] = tableP; |
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| 164 | |
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| 165 | // Final state |
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| 166 | |
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| 167 | std::ostringstream pFullFileName; |
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| 168 | pFullFileName << path << "/dna/sigmadiff_ionisation_p_born.dat"; |
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| 169 | std::ifstream pDiffCrossSection(pFullFileName.str().c_str()); |
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| 170 | |
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| 171 | if (!pDiffCrossSection) |
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| 172 | { |
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| 173 | G4Exception("G4DNABornIonisationModel::ERROR OPENING proton DATA FILE"); |
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| 174 | } |
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| 175 | |
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| 176 | pTdummyVec.push_back(0.); |
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| 177 | while(!pDiffCrossSection.eof()) |
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| 178 | { |
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| 179 | double tDummy; |
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| 180 | double eDummy; |
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| 181 | pDiffCrossSection>>tDummy>>eDummy; |
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| 182 | if (tDummy != pTdummyVec.back()) pTdummyVec.push_back(tDummy); |
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| 183 | for (int j=0; j<5; j++) |
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| 184 | { |
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| 185 | pDiffCrossSection>>pDiffCrossSectionData[j][tDummy][eDummy]; |
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| 186 | |
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| 187 | // SI - only if eof is not reached ! |
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| 188 | if (!pDiffCrossSection.eof()) pDiffCrossSectionData[j][tDummy][eDummy]*=scaleFactor; |
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| 189 | |
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| 190 | pVecm[tDummy].push_back(eDummy); |
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| 191 | } |
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| 192 | } |
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| 193 | |
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| 194 | } |
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| 195 | else |
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| 196 | { |
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| 197 | G4Exception("G4DNABornIonisationModel::Initialise(): proton is not defined"); |
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| 198 | } |
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| 199 | |
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| 200 | if (particle==electronDef) |
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| 201 | { |
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| 202 | SetLowEnergyLimit(lowEnergyLimit[electron]); |
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| 203 | SetHighEnergyLimit(highEnergyLimit[electron]); |
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| 204 | } |
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| 205 | |
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| 206 | if (particle==protonDef) |
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| 207 | { |
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| 208 | SetLowEnergyLimit(lowEnergyLimit[proton]); |
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| 209 | SetHighEnergyLimit(highEnergyLimit[proton]); |
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| 210 | } |
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| 211 | |
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| 212 | G4cout << "Born ionisation model is initialized " << G4endl |
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| 213 | << "Energy range: " |
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| 214 | << LowEnergyLimit() / eV << " eV - " |
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| 215 | << HighEnergyLimit() / keV << " keV for " |
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| 216 | << particle->GetParticleName() |
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| 217 | << G4endl; |
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| 218 | |
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| 219 | // |
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| 220 | |
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| 221 | if(!isInitialised) |
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| 222 | { |
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| 223 | isInitialised = true; |
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| 224 | |
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| 225 | if(pParticleChange) |
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| 226 | fParticleChangeForGamma = reinterpret_cast<G4ParticleChangeForGamma*>(pParticleChange); |
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| 227 | else |
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| 228 | fParticleChangeForGamma = new G4ParticleChangeForGamma(); |
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| 229 | } |
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| 230 | |
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| 231 | // InitialiseElementSelectors(particle,cuts); |
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| 232 | |
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| 233 | // Test if water material |
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| 234 | |
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| 235 | flagMaterialIsWater= false; |
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| 236 | densityWater = 0; |
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| 237 | |
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| 238 | const G4ProductionCutsTable* theCoupleTable = G4ProductionCutsTable::GetProductionCutsTable(); |
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| 239 | |
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| 240 | if(theCoupleTable) |
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| 241 | { |
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| 242 | G4int numOfCouples = theCoupleTable->GetTableSize(); |
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| 243 | |
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| 244 | if(numOfCouples>0) |
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| 245 | { |
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| 246 | for (G4int i=0; i<numOfCouples; i++) |
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| 247 | { |
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| 248 | const G4MaterialCutsCouple* couple = theCoupleTable->GetMaterialCutsCouple(i); |
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| 249 | const G4Material* material = couple->GetMaterial(); |
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| 250 | |
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| 251 | size_t j = material->GetNumberOfElements(); |
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| 252 | while (j>0) |
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| 253 | { |
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| 254 | j--; |
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| 255 | const G4Element* element(material->GetElement(j)); |
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| 256 | if (element->GetZ() == 8.) |
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| 257 | { |
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| 258 | G4double density = material->GetAtomicNumDensityVector()[j]; |
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| 259 | if (density > 0.) |
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| 260 | { |
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| 261 | flagMaterialIsWater = true; |
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| 262 | densityWater = density; |
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| 263 | |
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| 264 | if (verboseLevel > 3) |
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| 265 | G4cout << "Water material is found with density(cm^-3)=" << density/(cm*cm*cm) << G4endl; |
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| 266 | } |
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| 267 | } |
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| 268 | } |
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| 269 | |
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| 270 | } |
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| 271 | } // if(numOfCouples>0) |
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| 272 | |
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| 273 | } // if (theCoupleTable) |
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| 274 | |
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| 275 | } |
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| 276 | |
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| 277 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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| 278 | |
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| 279 | G4double G4DNABornIonisationModel::CrossSectionPerVolume(const G4Material*, |
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| 280 | const G4ParticleDefinition* particleDefinition, |
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| 281 | G4double ekin, |
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| 282 | G4double, |
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| 283 | G4double) |
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| 284 | { |
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| 285 | if (verboseLevel > 3) |
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| 286 | G4cout << "Calling CrossSectionPerVolume() of G4DNABornIonisationModel" << G4endl; |
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| 287 | |
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| 288 | if ( |
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| 289 | particleDefinition != G4Proton::ProtonDefinition() |
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| 290 | && |
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| 291 | particleDefinition != G4Electron::ElectronDefinition() |
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| 292 | ) |
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| 293 | |
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| 294 | return 0; |
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| 295 | |
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| 296 | // Calculate total cross section for model |
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| 297 | |
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| 298 | G4double lowLim = 0; |
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| 299 | G4double highLim = 0; |
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| 300 | G4double sigma=0; |
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| 301 | |
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| 302 | if (flagMaterialIsWater) |
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| 303 | { |
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| 304 | const G4String& particleName = particleDefinition->GetParticleName(); |
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| 305 | |
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| 306 | std::map< G4String,G4double,std::less<G4String> >::iterator pos1; |
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| 307 | pos1 = lowEnergyLimit.find(particleName); |
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| 308 | if (pos1 != lowEnergyLimit.end()) |
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| 309 | { |
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| 310 | lowLim = pos1->second; |
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| 311 | } |
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| 312 | |
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| 313 | std::map< G4String,G4double,std::less<G4String> >::iterator pos2; |
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| 314 | pos2 = highEnergyLimit.find(particleName); |
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| 315 | if (pos2 != highEnergyLimit.end()) |
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| 316 | { |
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| 317 | highLim = pos2->second; |
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| 318 | } |
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| 319 | |
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| 320 | if (ekin >= lowLim && ekin < highLim) |
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| 321 | { |
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| 322 | std::map< G4String,G4DNACrossSectionDataSet*,std::less<G4String> >::iterator pos; |
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| 323 | pos = tableData.find(particleName); |
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| 324 | |
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| 325 | if (pos != tableData.end()) |
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| 326 | { |
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| 327 | G4DNACrossSectionDataSet* table = pos->second; |
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| 328 | if (table != 0) |
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| 329 | { |
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| 330 | sigma = table->FindValue(ekin); |
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| 331 | } |
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| 332 | } |
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| 333 | else |
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| 334 | { |
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| 335 | G4Exception("G4DNABornIonisationModel::CrossSectionPerVolume: attempting to calculate cross section for wrong particle"); |
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| 336 | } |
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| 337 | } |
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| 338 | |
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| 339 | if (verboseLevel > 3) |
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| 340 | { |
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| 341 | G4cout << "---> Kinetic energy(eV)=" << ekin/eV << G4endl; |
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| 342 | G4cout << " - Cross section per water molecule (cm^2)=" << sigma/cm/cm << G4endl; |
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| 343 | G4cout << " - Cross section per water molecule (cm^-1)=" << sigma*densityWater/(1./cm) << G4endl; |
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| 344 | } |
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| 345 | |
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| 346 | } // if (waterMaterial) |
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| 347 | |
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| 348 | return sigma*densityWater; |
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| 349 | |
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| 350 | } |
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| 351 | |
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| 352 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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| 353 | |
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| 354 | void G4DNABornIonisationModel::SampleSecondaries(std::vector<G4DynamicParticle*>* fvect, |
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| 355 | const G4MaterialCutsCouple* /*couple*/, |
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| 356 | const G4DynamicParticle* particle, |
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| 357 | G4double, |
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| 358 | G4double) |
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| 359 | { |
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| 360 | |
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| 361 | if (verboseLevel > 3) |
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| 362 | G4cout << "Calling SampleSecondaries() of G4DNABornIonisationModel" << G4endl; |
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| 363 | |
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| 364 | G4double lowLim = 0; |
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| 365 | G4double highLim = 0; |
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| 366 | |
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| 367 | G4double k = particle->GetKineticEnergy(); |
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| 368 | |
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| 369 | const G4String& particleName = particle->GetDefinition()->GetParticleName(); |
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| 370 | |
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| 371 | std::map< G4String,G4double,std::less<G4String> >::iterator pos1; |
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| 372 | pos1 = lowEnergyLimit.find(particleName); |
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| 373 | |
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| 374 | if (pos1 != lowEnergyLimit.end()) |
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| 375 | { |
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| 376 | lowLim = pos1->second; |
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| 377 | } |
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| 378 | |
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| 379 | std::map< G4String,G4double,std::less<G4String> >::iterator pos2; |
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| 380 | pos2 = highEnergyLimit.find(particleName); |
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| 381 | |
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| 382 | if (pos2 != highEnergyLimit.end()) |
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| 383 | { |
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| 384 | highLim = pos2->second; |
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| 385 | } |
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| 386 | |
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| 387 | if (k >= lowLim && k < highLim) |
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| 388 | { |
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| 389 | G4ParticleMomentum primaryDirection = particle->GetMomentumDirection(); |
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| 390 | G4double particleMass = particle->GetDefinition()->GetPDGMass(); |
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| 391 | G4double totalEnergy = k + particleMass; |
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| 392 | G4double pSquare = k * (totalEnergy + particleMass); |
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| 393 | G4double totalMomentum = std::sqrt(pSquare); |
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| 394 | |
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| 395 | G4int ionizationShell = RandomSelect(k,particleName); |
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| 396 | |
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| 397 | G4double secondaryKinetic = RandomizeEjectedElectronEnergy(particle->GetDefinition(),k,ionizationShell); |
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| 398 | |
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| 399 | G4double bindingEnergy = waterStructure.IonisationEnergy(ionizationShell); |
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| 400 | |
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| 401 | G4double cosTheta = 0.; |
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| 402 | G4double phi = 0.; |
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| 403 | RandomizeEjectedElectronDirection(particle->GetDefinition(), k,secondaryKinetic, cosTheta, phi); |
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| 404 | |
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| 405 | G4double sinTheta = std::sqrt(1.-cosTheta*cosTheta); |
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| 406 | G4double dirX = sinTheta*std::cos(phi); |
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| 407 | G4double dirY = sinTheta*std::sin(phi); |
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| 408 | G4double dirZ = cosTheta; |
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| 409 | G4ThreeVector deltaDirection(dirX,dirY,dirZ); |
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| 410 | deltaDirection.rotateUz(primaryDirection); |
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| 411 | |
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| 412 | G4double deltaTotalMomentum = std::sqrt(secondaryKinetic*(secondaryKinetic + 2.*electron_mass_c2 )); |
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| 413 | |
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| 414 | G4double finalPx = totalMomentum*primaryDirection.x() - deltaTotalMomentum*deltaDirection.x(); |
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| 415 | G4double finalPy = totalMomentum*primaryDirection.y() - deltaTotalMomentum*deltaDirection.y(); |
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| 416 | G4double finalPz = totalMomentum*primaryDirection.z() - deltaTotalMomentum*deltaDirection.z(); |
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| 417 | G4double finalMomentum = std::sqrt(finalPx*finalPx + finalPy*finalPy + finalPz*finalPz); |
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| 418 | finalPx /= finalMomentum; |
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| 419 | finalPy /= finalMomentum; |
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| 420 | finalPz /= finalMomentum; |
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| 421 | |
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| 422 | G4ThreeVector direction; |
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| 423 | direction.set(finalPx,finalPy,finalPz); |
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| 424 | |
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| 425 | fParticleChangeForGamma->ProposeMomentumDirection(direction.unit()) ; |
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| 426 | fParticleChangeForGamma->SetProposedKineticEnergy(k-bindingEnergy-secondaryKinetic); |
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| 427 | fParticleChangeForGamma->ProposeLocalEnergyDeposit(bindingEnergy); |
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| 428 | |
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| 429 | G4DynamicParticle* dp = new G4DynamicParticle (G4Electron::Electron(),deltaDirection,secondaryKinetic) ; |
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| 430 | fvect->push_back(dp); |
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| 431 | } |
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| 432 | |
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| 433 | } |
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| 434 | |
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| 435 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo...... |
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| 436 | |
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| 437 | G4double G4DNABornIonisationModel::RandomizeEjectedElectronEnergy(G4ParticleDefinition* particleDefinition, |
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| 438 | G4double k, G4int shell) |
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| 439 | { |
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| 440 | if (particleDefinition == G4Electron::ElectronDefinition()) |
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| 441 | { |
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| 442 | G4double maximumEnergyTransfer=0.; |
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| 443 | if ((k+waterStructure.IonisationEnergy(shell))/2. > k) maximumEnergyTransfer=k; |
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| 444 | else maximumEnergyTransfer = (k+waterStructure.IonisationEnergy(shell))/2.; |
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| 445 | |
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| 446 | G4double crossSectionMaximum = 0.; |
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| 447 | for(G4double value=waterStructure.IonisationEnergy(shell); value<=maximumEnergyTransfer; value+=0.1*eV) |
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| 448 | { |
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| 449 | G4double differentialCrossSection = DifferentialCrossSection(particleDefinition, k/eV, value/eV, shell); |
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| 450 | if(differentialCrossSection >= crossSectionMaximum) crossSectionMaximum = differentialCrossSection; |
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| 451 | } |
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| 452 | |
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| 453 | G4double secondaryElectronKineticEnergy=0.; |
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| 454 | do |
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| 455 | { |
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| 456 | secondaryElectronKineticEnergy = G4UniformRand() * (maximumEnergyTransfer-waterStructure.IonisationEnergy(shell)); |
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| 457 | } while(G4UniformRand()*crossSectionMaximum > |
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| 458 | DifferentialCrossSection(particleDefinition, k/eV,(secondaryElectronKineticEnergy+waterStructure.IonisationEnergy(shell))/eV,shell)); |
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| 459 | |
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| 460 | return secondaryElectronKineticEnergy; |
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| 461 | |
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| 462 | } |
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| 463 | |
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| 464 | if (particleDefinition == G4Proton::ProtonDefinition()) |
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| 465 | { |
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| 466 | G4double maximumKineticEnergyTransfer = 4.* (electron_mass_c2 / proton_mass_c2) * k - (waterStructure.IonisationEnergy(shell)); |
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| 467 | |
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| 468 | G4double crossSectionMaximum = 0.; |
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| 469 | for (G4double value = waterStructure.IonisationEnergy(shell); |
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| 470 | value<=4.*waterStructure.IonisationEnergy(shell) ; |
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| 471 | value+=0.1*eV) |
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| 472 | { |
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| 473 | G4double differentialCrossSection = DifferentialCrossSection(particleDefinition, k/eV, value/eV, shell); |
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| 474 | if (differentialCrossSection >= crossSectionMaximum) crossSectionMaximum = differentialCrossSection; |
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| 475 | } |
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| 476 | |
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| 477 | G4double secondaryElectronKineticEnergy = 0.; |
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| 478 | do |
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| 479 | { |
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| 480 | secondaryElectronKineticEnergy = G4UniformRand() * maximumKineticEnergyTransfer; |
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| 481 | } while(G4UniformRand()*crossSectionMaximum >= |
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| 482 | DifferentialCrossSection(particleDefinition, k/eV,(secondaryElectronKineticEnergy+waterStructure.IonisationEnergy(shell))/eV,shell)); |
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| 483 | |
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| 484 | return secondaryElectronKineticEnergy; |
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| 485 | } |
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| 486 | |
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| 487 | return 0; |
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| 488 | } |
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| 489 | |
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| 490 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo...... |
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| 491 | |
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| 492 | void G4DNABornIonisationModel::RandomizeEjectedElectronDirection(G4ParticleDefinition* particleDefinition, |
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| 493 | G4double k, |
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| 494 | G4double secKinetic, |
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| 495 | G4double & cosTheta, |
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| 496 | G4double & phi ) |
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| 497 | { |
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| 498 | if (particleDefinition == G4Electron::ElectronDefinition()) |
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| 499 | { |
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| 500 | phi = twopi * G4UniformRand(); |
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| 501 | if (secKinetic < 50.*eV) cosTheta = (2.*G4UniformRand())-1.; |
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| 502 | else if (secKinetic <= 200.*eV) |
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| 503 | { |
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| 504 | if (G4UniformRand() <= 0.1) cosTheta = (2.*G4UniformRand())-1.; |
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| 505 | else cosTheta = G4UniformRand()*(std::sqrt(2.)/2); |
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| 506 | } |
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| 507 | else |
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| 508 | { |
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| 509 | G4double sin2O = (1.-secKinetic/k) / (1.+secKinetic/(2.*electron_mass_c2)); |
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| 510 | cosTheta = std::sqrt(1.-sin2O); |
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| 511 | } |
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| 512 | } |
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| 513 | |
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| 514 | if (particleDefinition == G4Proton::ProtonDefinition()) |
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| 515 | { |
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| 516 | G4double maxSecKinetic = 4.* (electron_mass_c2 / proton_mass_c2) * k; |
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| 517 | phi = twopi * G4UniformRand(); |
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| 518 | cosTheta = std::sqrt(secKinetic / maxSecKinetic); |
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| 519 | } |
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| 520 | } |
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| 521 | |
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| 522 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo...... |
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| 523 | |
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| 524 | double G4DNABornIonisationModel::DifferentialCrossSection(G4ParticleDefinition * particleDefinition, |
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| 525 | G4double k, |
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| 526 | G4double energyTransfer, |
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| 527 | G4int ionizationLevelIndex) |
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| 528 | { |
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| 529 | G4double sigma = 0.; |
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| 530 | |
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| 531 | if (energyTransfer >= waterStructure.IonisationEnergy(ionizationLevelIndex)) |
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| 532 | { |
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| 533 | G4double valueT1 = 0; |
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| 534 | G4double valueT2 = 0; |
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| 535 | G4double valueE21 = 0; |
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| 536 | G4double valueE22 = 0; |
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| 537 | G4double valueE12 = 0; |
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| 538 | G4double valueE11 = 0; |
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| 539 | |
---|
| 540 | G4double xs11 = 0; |
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| 541 | G4double xs12 = 0; |
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| 542 | G4double xs21 = 0; |
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| 543 | G4double xs22 = 0; |
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| 544 | |
---|
| 545 | if (particleDefinition == G4Electron::ElectronDefinition()) |
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| 546 | { |
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| 547 | // k should be in eV and energy transfer eV also |
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| 548 | |
---|
| 549 | std::vector<double>::iterator t2 = std::upper_bound(eTdummyVec.begin(),eTdummyVec.end(), k); |
---|
| 550 | |
---|
| 551 | std::vector<double>::iterator t1 = t2-1; |
---|
| 552 | |
---|
| 553 | // SI : the following condition avoids situations where energyTransfer >last vector element |
---|
| 554 | if (energyTransfer <= eVecm[(*t1)].back()) |
---|
| 555 | { |
---|
| 556 | std::vector<double>::iterator e12 = std::upper_bound(eVecm[(*t1)].begin(),eVecm[(*t1)].end(), energyTransfer); |
---|
| 557 | std::vector<double>::iterator e11 = e12-1; |
---|
| 558 | |
---|
| 559 | std::vector<double>::iterator e22 = std::upper_bound(eVecm[(*t2)].begin(),eVecm[(*t2)].end(), energyTransfer); |
---|
| 560 | std::vector<double>::iterator e21 = e22-1; |
---|
| 561 | |
---|
| 562 | valueT1 =*t1; |
---|
| 563 | valueT2 =*t2; |
---|
| 564 | valueE21 =*e21; |
---|
| 565 | valueE22 =*e22; |
---|
| 566 | valueE12 =*e12; |
---|
| 567 | valueE11 =*e11; |
---|
| 568 | |
---|
| 569 | xs11 = eDiffCrossSectionData[ionizationLevelIndex][valueT1][valueE11]; |
---|
| 570 | xs12 = eDiffCrossSectionData[ionizationLevelIndex][valueT1][valueE12]; |
---|
| 571 | xs21 = eDiffCrossSectionData[ionizationLevelIndex][valueT2][valueE21]; |
---|
| 572 | xs22 = eDiffCrossSectionData[ionizationLevelIndex][valueT2][valueE22]; |
---|
| 573 | } |
---|
| 574 | |
---|
| 575 | } |
---|
| 576 | |
---|
| 577 | if (particleDefinition == G4Proton::ProtonDefinition()) |
---|
| 578 | { |
---|
| 579 | // k should be in eV and energy transfer eV also |
---|
| 580 | std::vector<double>::iterator t2 = std::upper_bound(pTdummyVec.begin(),pTdummyVec.end(), k); |
---|
| 581 | std::vector<double>::iterator t1 = t2-1; |
---|
| 582 | |
---|
| 583 | std::vector<double>::iterator e12 = std::upper_bound(pVecm[(*t1)].begin(),pVecm[(*t1)].end(), energyTransfer); |
---|
| 584 | std::vector<double>::iterator e11 = e12-1; |
---|
| 585 | |
---|
| 586 | std::vector<double>::iterator e22 = std::upper_bound(pVecm[(*t2)].begin(),pVecm[(*t2)].end(), energyTransfer); |
---|
| 587 | std::vector<double>::iterator e21 = e22-1; |
---|
| 588 | |
---|
| 589 | valueT1 =*t1; |
---|
| 590 | valueT2 =*t2; |
---|
| 591 | valueE21 =*e21; |
---|
| 592 | valueE22 =*e22; |
---|
| 593 | valueE12 =*e12; |
---|
| 594 | valueE11 =*e11; |
---|
| 595 | |
---|
| 596 | xs11 = pDiffCrossSectionData[ionizationLevelIndex][valueT1][valueE11]; |
---|
| 597 | xs12 = pDiffCrossSectionData[ionizationLevelIndex][valueT1][valueE12]; |
---|
| 598 | xs21 = pDiffCrossSectionData[ionizationLevelIndex][valueT2][valueE21]; |
---|
| 599 | xs22 = pDiffCrossSectionData[ionizationLevelIndex][valueT2][valueE22]; |
---|
| 600 | |
---|
| 601 | } |
---|
| 602 | |
---|
| 603 | G4double xsProduct = xs11 * xs12 * xs21 * xs22; |
---|
| 604 | if (xsProduct != 0.) |
---|
| 605 | { |
---|
| 606 | sigma = QuadInterpolator( valueE11, valueE12, |
---|
| 607 | valueE21, valueE22, |
---|
| 608 | xs11, xs12, |
---|
| 609 | xs21, xs22, |
---|
| 610 | valueT1, valueT2, |
---|
| 611 | k, energyTransfer); |
---|
| 612 | } |
---|
| 613 | |
---|
| 614 | } |
---|
| 615 | |
---|
| 616 | return sigma; |
---|
| 617 | } |
---|
| 618 | |
---|
| 619 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo...... |
---|
| 620 | |
---|
| 621 | G4double G4DNABornIonisationModel::LogLogInterpolate(G4double e1, |
---|
| 622 | G4double e2, |
---|
| 623 | G4double e, |
---|
| 624 | G4double xs1, |
---|
| 625 | G4double xs2) |
---|
| 626 | { |
---|
| 627 | G4double a = (std::log10(xs2)-std::log10(xs1)) / (std::log10(e2)-std::log10(e1)); |
---|
| 628 | G4double b = std::log10(xs2) - a*std::log10(e2); |
---|
| 629 | G4double sigma = a*std::log10(e) + b; |
---|
| 630 | G4double value = (std::pow(10.,sigma)); |
---|
| 631 | return value; |
---|
| 632 | } |
---|
| 633 | |
---|
| 634 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo...... |
---|
| 635 | |
---|
| 636 | G4double G4DNABornIonisationModel::QuadInterpolator(G4double e11, G4double e12, |
---|
| 637 | G4double e21, G4double e22, |
---|
| 638 | G4double xs11, G4double xs12, |
---|
| 639 | G4double xs21, G4double xs22, |
---|
| 640 | G4double t1, G4double t2, |
---|
| 641 | G4double t, G4double e) |
---|
| 642 | { |
---|
| 643 | G4double interpolatedvalue1 = LogLogInterpolate(e11, e12, e, xs11, xs12); |
---|
| 644 | G4double interpolatedvalue2 = LogLogInterpolate(e21, e22, e, xs21, xs22); |
---|
| 645 | G4double value = LogLogInterpolate(t1, t2, t, interpolatedvalue1, interpolatedvalue2); |
---|
| 646 | return value; |
---|
| 647 | } |
---|
| 648 | |
---|
| 649 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo...... |
---|
| 650 | |
---|
| 651 | G4int G4DNABornIonisationModel::RandomSelect(G4double k, const G4String& particle ) |
---|
| 652 | { |
---|
| 653 | G4int level = 0; |
---|
| 654 | |
---|
| 655 | std::map< G4String,G4DNACrossSectionDataSet*,std::less<G4String> >::iterator pos; |
---|
| 656 | pos = tableData.find(particle); |
---|
| 657 | |
---|
| 658 | if (pos != tableData.end()) |
---|
| 659 | { |
---|
| 660 | G4DNACrossSectionDataSet* table = pos->second; |
---|
| 661 | |
---|
| 662 | if (table != 0) |
---|
| 663 | { |
---|
| 664 | G4double* valuesBuffer = new G4double[table->NumberOfComponents()]; |
---|
| 665 | const size_t n(table->NumberOfComponents()); |
---|
| 666 | size_t i(n); |
---|
| 667 | G4double value = 0.; |
---|
| 668 | |
---|
| 669 | while (i>0) |
---|
| 670 | { |
---|
| 671 | i--; |
---|
| 672 | valuesBuffer[i] = table->GetComponent(i)->FindValue(k); |
---|
| 673 | value += valuesBuffer[i]; |
---|
| 674 | } |
---|
| 675 | |
---|
| 676 | value *= G4UniformRand(); |
---|
| 677 | |
---|
| 678 | i = n; |
---|
| 679 | |
---|
| 680 | while (i > 0) |
---|
| 681 | { |
---|
| 682 | i--; |
---|
| 683 | |
---|
| 684 | if (valuesBuffer[i] > value) |
---|
| 685 | { |
---|
| 686 | delete[] valuesBuffer; |
---|
| 687 | return i; |
---|
| 688 | } |
---|
| 689 | value -= valuesBuffer[i]; |
---|
| 690 | } |
---|
| 691 | |
---|
| 692 | if (valuesBuffer) delete[] valuesBuffer; |
---|
| 693 | |
---|
| 694 | } |
---|
| 695 | } |
---|
| 696 | else |
---|
| 697 | { |
---|
| 698 | G4Exception("G4DNABornIonisationModel::RandomSelect attempting to calculate cross section for wrong particle"); |
---|
| 699 | } |
---|
| 700 | |
---|
| 701 | return level; |
---|
| 702 | } |
---|
| 703 | |
---|