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: G4LowEnergyIonisation.cc,v 1.106 2009/06/11 15:47:08 mantero 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 | // File name: G4LowEnergyIonisation |
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32 | // |
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33 | // Author: Alessandra Forti, Vladimir Ivanchenko |
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34 | // |
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35 | // Creation date: March 1999 |
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36 | // |
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37 | // Modifications: |
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38 | // - 11.04.2000 VL |
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39 | // Changing use of float and G4float casts to G4double casts |
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40 | // because of problems with optimisation (bug ?) |
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41 | // 10.04.2000 VL |
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42 | // - Correcting Fluorescence transition probabilities in order to take into account |
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43 | // non-radiative transitions. No Auger electron simulated yet: energy is locally deposited. |
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44 | // 10.04.2000 VL |
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45 | // - Correction of incident electron final momentum direction |
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46 | // 07.04.2000 VL+LU |
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47 | // - First implementation of continuous energy loss |
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48 | // 22.03.2000 VL |
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49 | // - 1 bug corrected in SelectRandomAtom method (units) |
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50 | // 17.02.2000 Veronique Lefebure |
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51 | // - 5 bugs corrected: |
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52 | // *in Fluorescence, 2 bugs affecting |
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53 | // . localEnergyDeposition and |
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54 | // . number of emitted photons that was then always 1 less |
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55 | // *in EnergySampling method: |
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56 | // . expon = Parms[13]+1; (instead of uncorrect -1) |
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57 | // . rejection /= Parms[6];(instead of uncorrect Parms[7]) |
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58 | // . Parms[6] is apparently corrupted in the data file (often = 0) |
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59 | // -->Compute normalisation into local variable rejectionMax |
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60 | // and use rejectionMax in stead of Parms[6] |
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61 | // |
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62 | // Added Livermore data table construction methods A. Forti |
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63 | // Modified BuildMeanFreePath to read new data tables A. Forti |
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64 | // Added EnergySampling method A. Forti |
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65 | // Modified PostStepDoIt to insert sampling with EEDL data A. Forti |
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66 | // Added SelectRandomAtom A. Forti |
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67 | // Added map of the elements A. Forti |
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68 | // 20.09.00 V.Ivanchenko update fluctuations |
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69 | // 24.04.01 V.Ivanchenko remove RogueWave |
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70 | // 22.05.01 V.Ivanchenko update calculation of delta-ray kinematic + |
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71 | // clean up the code |
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72 | // 02.08.01 V.Ivanchenko fix energy conservation for small steps |
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73 | // 18.08.01 V.Ivanchenko fix energy conservation for pathalogical delta-energy |
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74 | // 01.10.01 E. Guardincerri Replaced fluorescence generation in PostStepDoIt |
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75 | // according to design iteration |
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76 | // 04.10.01 MGP Minor clean-up in the fluo section, removal of |
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77 | // compilation warnings and extra protection to |
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78 | // prevent from accessing a null pointer |
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79 | // 29.09.01 V.Ivanchenko revision based on design iteration |
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80 | // 10.10.01 MGP Revision to improve code quality and |
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81 | // consistency with design |
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82 | // 18.10.01 V.Ivanchenko Add fluorescence AlongStepDoIt |
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83 | // 18.10.01 MGP Revision to improve code quality and |
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84 | // consistency with design |
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85 | // 19.10.01 V.Ivanchenko update according to new design, V.Ivanchenko |
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86 | // 26.10.01 V.Ivanchenko clean up deexcitation |
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87 | // 28.10.01 V.Ivanchenko update printout |
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88 | // 29.11.01 V.Ivanchenko New parametrisation introduced |
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89 | // 25.03.02 V.Ivanchneko Fix in fluorescence |
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90 | // 28.03.02 V.Ivanchenko Add flag of fluorescence |
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91 | // 28.05.02 V.Ivanchenko Remove flag fStopAndKill |
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92 | // 31.05.02 V.Ivanchenko Add path of Fluo + Auger cuts to |
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93 | // AtomicDeexcitation |
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94 | // 03.06.02 MGP Restore fStopAndKill |
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95 | // 19.06.02 VI Additional printout |
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96 | // 30.07.02 VI Fix in restricted energy loss |
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97 | // 20.09.02 VI Remove ActivateFlurescence from SetCut... |
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98 | // 21.01.03 VI Cut per region |
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99 | // 12.02.03 VI Change signature for Deexcitation |
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100 | // 12.04.03 V.Ivanchenko Cut per region for fluo AlongStep |
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101 | // 31.08.04 V.Ivanchenko Add density correction |
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102 | // |
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103 | // -------------------------------------------------------------- |
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104 | |
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105 | #include "G4LowEnergyIonisation.hh" |
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106 | #include "G4eIonisationSpectrum.hh" |
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107 | #include "G4eIonisationCrossSectionHandler.hh" |
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108 | #include "G4AtomicTransitionManager.hh" |
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109 | #include "G4AtomicShell.hh" |
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110 | #include "G4VDataSetAlgorithm.hh" |
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111 | #include "G4SemiLogInterpolation.hh" |
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112 | #include "G4LogLogInterpolation.hh" |
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113 | #include "G4EMDataSet.hh" |
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114 | #include "G4VEMDataSet.hh" |
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115 | #include "G4CompositeEMDataSet.hh" |
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116 | #include "G4EnergyLossTables.hh" |
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117 | #include "G4ShellVacancy.hh" |
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118 | #include "G4UnitsTable.hh" |
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119 | #include "G4Electron.hh" |
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120 | #include "G4Gamma.hh" |
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121 | #include "G4ProductionCutsTable.hh" |
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122 | |
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123 | G4LowEnergyIonisation::G4LowEnergyIonisation(const G4String& nam) |
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124 | : G4eLowEnergyLoss(nam), |
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125 | crossSectionHandler(0), |
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126 | theMeanFreePath(0), |
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127 | energySpectrum(0), |
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128 | shellVacancy(0) |
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129 | { |
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130 | cutForPhotons = 250.0*eV; |
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131 | cutForElectrons = 250.0*eV; |
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132 | verboseLevel = 0; |
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133 | |
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134 | G4cout << G4endl; |
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135 | G4cout << "*******************************************************************************" << G4endl; |
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136 | G4cout << "*******************************************************************************" << G4endl; |
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137 | G4cout << " The class G4LowEnergyIonisation is NOT SUPPORTED ANYMORE. " << G4endl; |
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138 | G4cout << " It will be REMOVED with the next major release of Geant4. " << G4endl; |
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139 | G4cout << " Please consult: https://twiki.cern.ch/twiki/bin/view/Geant4/LoweProcesses" << G4endl; |
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140 | G4cout << "*******************************************************************************" << G4endl; |
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141 | G4cout << "*******************************************************************************" << G4endl; |
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142 | G4cout << G4endl; |
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143 | } |
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144 | |
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145 | |
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146 | G4LowEnergyIonisation::~G4LowEnergyIonisation() |
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147 | { |
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148 | delete crossSectionHandler; |
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149 | delete energySpectrum; |
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150 | delete theMeanFreePath; |
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151 | delete shellVacancy; |
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152 | } |
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153 | |
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154 | |
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155 | void G4LowEnergyIonisation::BuildPhysicsTable(const G4ParticleDefinition& aParticleType) |
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156 | { |
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157 | if(verboseLevel > 0) { |
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158 | G4cout << "G4LowEnergyIonisation::BuildPhysicsTable start" |
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159 | << G4endl; |
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160 | } |
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161 | |
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162 | cutForDelta.clear(); |
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163 | |
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164 | // Create and fill IonisationParameters once |
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165 | if( energySpectrum != 0 ) delete energySpectrum; |
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166 | energySpectrum = new G4eIonisationSpectrum(); |
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167 | |
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168 | if(verboseLevel > 0) { |
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169 | G4cout << "G4VEnergySpectrum is initialized" |
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170 | << G4endl; |
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171 | } |
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172 | |
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173 | // Create and fill G4CrossSectionHandler once |
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174 | |
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175 | if ( crossSectionHandler != 0 ) delete crossSectionHandler; |
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176 | G4VDataSetAlgorithm* interpolation = new G4SemiLogInterpolation(); |
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177 | G4double lowKineticEnergy = GetLowerBoundEloss(); |
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178 | G4double highKineticEnergy = GetUpperBoundEloss(); |
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179 | G4int totBin = GetNbinEloss(); |
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180 | crossSectionHandler = new G4eIonisationCrossSectionHandler(energySpectrum, |
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181 | interpolation, |
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182 | lowKineticEnergy, |
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183 | highKineticEnergy, |
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184 | totBin); |
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185 | crossSectionHandler->LoadShellData("ioni/ion-ss-cs-"); |
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186 | |
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187 | if (verboseLevel > 0) { |
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188 | G4cout << GetProcessName() |
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189 | << " is created; Cross section data: " |
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190 | << G4endl; |
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191 | crossSectionHandler->PrintData(); |
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192 | G4cout << "Parameters: " |
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193 | << G4endl; |
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194 | energySpectrum->PrintData(); |
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195 | } |
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196 | |
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197 | // Build loss table for IonisationIV |
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198 | |
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199 | BuildLossTable(aParticleType); |
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200 | |
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201 | if(verboseLevel > 0) { |
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202 | G4cout << "The loss table is built" |
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203 | << G4endl; |
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204 | } |
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205 | |
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206 | if (&aParticleType==G4Electron::Electron()) { |
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207 | |
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208 | RecorderOfElectronProcess[CounterOfElectronProcess] = (*this).theLossTable; |
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209 | CounterOfElectronProcess++; |
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210 | PrintInfoDefinition(); |
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211 | |
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212 | } else { |
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213 | |
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214 | RecorderOfPositronProcess[CounterOfPositronProcess] = (*this).theLossTable; |
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215 | CounterOfPositronProcess++; |
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216 | } |
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217 | |
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218 | // Build mean free path data using cut values |
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219 | |
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220 | if( theMeanFreePath ) delete theMeanFreePath; |
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221 | theMeanFreePath = crossSectionHandler-> |
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222 | BuildMeanFreePathForMaterials(&cutForDelta); |
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223 | |
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224 | if(verboseLevel > 0) { |
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225 | G4cout << "The MeanFreePath table is built" |
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226 | << G4endl; |
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227 | if(verboseLevel > 1) theMeanFreePath->PrintData(); |
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228 | } |
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229 | |
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230 | // Build common DEDX table for all ionisation processes |
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231 | |
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232 | BuildDEDXTable(aParticleType); |
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233 | |
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234 | if (verboseLevel > 0) { |
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235 | G4cout << "G4LowEnergyIonisation::BuildPhysicsTable end" |
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236 | << G4endl; |
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237 | } |
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238 | } |
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239 | |
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240 | |
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241 | void G4LowEnergyIonisation::BuildLossTable(const G4ParticleDefinition& ) |
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242 | { |
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243 | // Build table for energy loss due to soft brems |
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244 | // the tables are built for *MATERIALS* binning is taken from LowEnergyLoss |
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245 | |
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246 | G4double lowKineticEnergy = GetLowerBoundEloss(); |
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247 | G4double highKineticEnergy = GetUpperBoundEloss(); |
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248 | size_t totBin = GetNbinEloss(); |
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249 | |
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250 | // create table |
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251 | |
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252 | if (theLossTable) { |
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253 | theLossTable->clearAndDestroy(); |
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254 | delete theLossTable; |
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255 | } |
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256 | const G4ProductionCutsTable* theCoupleTable= |
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257 | G4ProductionCutsTable::GetProductionCutsTable(); |
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258 | size_t numOfCouples = theCoupleTable->GetTableSize(); |
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259 | theLossTable = new G4PhysicsTable(numOfCouples); |
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260 | |
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261 | if (shellVacancy != 0) delete shellVacancy; |
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262 | shellVacancy = new G4ShellVacancy(); |
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263 | G4DataVector* ksi = 0; |
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264 | G4DataVector* energy = 0; |
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265 | size_t binForFluo = totBin/10; |
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266 | |
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267 | G4PhysicsLogVector* bVector = new G4PhysicsLogVector(lowKineticEnergy, |
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268 | highKineticEnergy, |
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269 | binForFluo); |
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270 | const G4AtomicTransitionManager* transitionManager = G4AtomicTransitionManager::Instance(); |
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271 | |
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272 | // Clean up the vector of cuts |
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273 | |
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274 | cutForDelta.clear(); |
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275 | |
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276 | // Loop for materials |
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277 | |
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278 | for (size_t m=0; m<numOfCouples; m++) { |
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279 | |
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280 | // create physics vector and fill it |
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281 | G4PhysicsLogVector* aVector = new G4PhysicsLogVector(lowKineticEnergy, |
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282 | highKineticEnergy, |
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283 | totBin); |
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284 | |
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285 | // get material parameters needed for the energy loss calculation |
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286 | const G4MaterialCutsCouple* couple = theCoupleTable->GetMaterialCutsCouple(m); |
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287 | const G4Material* material= couple->GetMaterial(); |
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288 | |
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289 | // the cut cannot be below lowest limit |
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290 | G4double tCut = (*(theCoupleTable->GetEnergyCutsVector(1)))[m]; |
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291 | if(tCut > highKineticEnergy) tCut = highKineticEnergy; |
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292 | cutForDelta.push_back(tCut); |
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293 | const G4ElementVector* theElementVector = material->GetElementVector(); |
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294 | size_t NumberOfElements = material->GetNumberOfElements() ; |
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295 | const G4double* theAtomicNumDensityVector = |
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296 | material->GetAtomicNumDensityVector(); |
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297 | if(verboseLevel > 0) { |
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298 | G4cout << "Energy loss for material # " << m |
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299 | << " tCut(keV)= " << tCut/keV |
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300 | << G4endl; |
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301 | } |
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302 | |
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303 | // now comes the loop for the kinetic energy values |
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304 | for (size_t i = 0; i<totBin; i++) { |
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305 | |
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306 | G4double lowEdgeEnergy = aVector->GetLowEdgeEnergy(i); |
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307 | G4double ionloss = 0.; |
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308 | |
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309 | // loop for elements in the material |
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310 | for (size_t iel=0; iel<NumberOfElements; iel++ ) { |
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311 | |
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312 | G4int Z = (G4int)((*theElementVector)[iel]->GetZ()); |
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313 | |
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314 | G4int nShells = transitionManager->NumberOfShells(Z); |
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315 | |
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316 | for (G4int n=0; n<nShells; n++) { |
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317 | |
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318 | G4double e = energySpectrum->AverageEnergy(Z, 0.0, tCut, |
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319 | lowEdgeEnergy, n); |
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320 | G4double cs= crossSectionHandler->FindValue(Z, lowEdgeEnergy, n); |
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321 | ionloss += e * cs * theAtomicNumDensityVector[iel]; |
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322 | |
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323 | if(verboseLevel > 1 || (Z == 14 && lowEdgeEnergy>1. && lowEdgeEnergy<0.)) { |
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324 | G4cout << "Z= " << Z |
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325 | << " shell= " << n |
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326 | << " E(keV)= " << lowEdgeEnergy/keV |
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327 | << " Eav(keV)= " << e/keV |
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328 | << " cs= " << cs |
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329 | << " loss= " << ionloss |
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330 | << " rho= " << theAtomicNumDensityVector[iel] |
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331 | << G4endl; |
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332 | } |
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333 | } |
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334 | G4double esp = energySpectrum->Excitation(Z, lowEdgeEnergy); |
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335 | ionloss += esp * theAtomicNumDensityVector[iel]; |
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336 | |
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337 | } |
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338 | if(verboseLevel > 1 || (m == 0 && lowEdgeEnergy>=1. && lowEdgeEnergy<=0.)) { |
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339 | G4cout << "Sum: " |
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340 | << " E(keV)= " << lowEdgeEnergy/keV |
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341 | << " loss(MeV/mm)= " << ionloss*mm/MeV |
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342 | << G4endl; |
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343 | } |
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344 | aVector->PutValue(i,ionloss); |
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345 | } |
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346 | theLossTable->insert(aVector); |
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347 | |
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348 | // fill data for fluorescence |
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349 | |
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350 | G4VDataSetAlgorithm* interp = new G4LogLogInterpolation(); |
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351 | G4VEMDataSet* xsis = new G4CompositeEMDataSet(interp, 1., 1.); |
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352 | for (size_t iel=0; iel<NumberOfElements; iel++ ) { |
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353 | |
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354 | G4int Z = (G4int)((*theElementVector)[iel]->GetZ()); |
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355 | energy = new G4DataVector(); |
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356 | ksi = new G4DataVector(); |
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357 | |
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358 | for (size_t j = 0; j<binForFluo; j++) { |
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359 | |
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360 | G4double lowEdgeEnergy = bVector->GetLowEdgeEnergy(j); |
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361 | G4double cross = 0.; |
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362 | G4double eAverage= 0.; |
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363 | G4int nShells = transitionManager->NumberOfShells(Z); |
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364 | |
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365 | for (G4int n=0; n<nShells; n++) { |
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366 | |
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367 | G4double e = energySpectrum->AverageEnergy(Z, 0.0, tCut, |
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368 | lowEdgeEnergy, n); |
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369 | G4double pro = energySpectrum->Probability(Z, 0.0, tCut, |
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370 | lowEdgeEnergy, n); |
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371 | G4double cs= crossSectionHandler->FindValue(Z, lowEdgeEnergy, n); |
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372 | eAverage += e * cs * theAtomicNumDensityVector[iel]; |
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373 | cross += cs * pro * theAtomicNumDensityVector[iel]; |
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374 | if(verboseLevel > 1) { |
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375 | G4cout << "Z= " << Z |
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376 | << " shell= " << n |
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377 | << " E(keV)= " << lowEdgeEnergy/keV |
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378 | << " Eav(keV)= " << e/keV |
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379 | << " pro= " << pro |
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380 | << " cs= " << cs |
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381 | << G4endl; |
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382 | } |
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383 | } |
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384 | |
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385 | G4double coeff = 0.0; |
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386 | if(eAverage > 0.) { |
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387 | coeff = cross/eAverage; |
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388 | eAverage /= cross; |
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389 | } |
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390 | |
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391 | if(verboseLevel > 1) { |
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392 | G4cout << "Ksi Coefficient for Z= " << Z |
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393 | << " E(keV)= " << lowEdgeEnergy/keV |
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394 | << " Eav(keV)= " << eAverage/keV |
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395 | << " coeff= " << coeff |
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396 | << G4endl; |
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397 | } |
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398 | |
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399 | energy->push_back(lowEdgeEnergy); |
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400 | ksi->push_back(coeff); |
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401 | } |
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402 | interp = new G4LogLogInterpolation(); |
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403 | G4VEMDataSet* set = new G4EMDataSet(Z,energy,ksi,interp,1.,1.); |
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404 | xsis->AddComponent(set); |
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405 | } |
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406 | if(verboseLevel) xsis->PrintData(); |
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407 | shellVacancy->AddXsiTable(xsis); |
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408 | } |
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409 | delete bVector; |
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410 | } |
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411 | |
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412 | |
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413 | G4VParticleChange* G4LowEnergyIonisation::PostStepDoIt(const G4Track& track, |
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414 | const G4Step& step) |
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415 | { |
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416 | // Delta electron production mechanism on base of the model |
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417 | // J. Stepanek " A program to determine the radiation spectra due |
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418 | // to a single atomic subshell ionisation by a particle or due to |
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419 | // deexcitation or decay of radionuclides", |
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420 | // Comp. Phys. Comm. 1206 pp 1-19 (1997) |
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421 | |
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422 | aParticleChange.Initialize(track); |
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423 | |
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424 | const G4MaterialCutsCouple* couple = track.GetMaterialCutsCouple(); |
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425 | G4double kineticEnergy = track.GetKineticEnergy(); |
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426 | |
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427 | // Select atom and shell |
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428 | |
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429 | G4int Z = crossSectionHandler->SelectRandomAtom(couple, kineticEnergy); |
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430 | G4int shell = crossSectionHandler->SelectRandomShell(Z, kineticEnergy); |
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431 | const G4AtomicShell* atomicShell = |
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432 | (G4AtomicTransitionManager::Instance())->Shell(Z, shell); |
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433 | G4double bindingEnergy = atomicShell->BindingEnergy(); |
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434 | G4int shellId = atomicShell->ShellId(); |
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435 | |
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436 | // Sample delta energy |
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437 | |
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438 | G4int index = couple->GetIndex(); |
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439 | G4double tCut = cutForDelta[index]; |
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440 | G4double tmax = energySpectrum->MaxEnergyOfSecondaries(kineticEnergy); |
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441 | G4double tDelta = energySpectrum->SampleEnergy(Z, tCut, tmax, |
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442 | kineticEnergy, shell); |
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443 | |
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444 | if(tDelta == 0.0) |
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445 | return G4VContinuousDiscreteProcess::PostStepDoIt(track, step); |
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446 | |
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447 | // Transform to shell potential |
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448 | G4double deltaKinE = tDelta + 2.0*bindingEnergy; |
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449 | G4double primaryKinE = kineticEnergy + 2.0*bindingEnergy; |
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450 | |
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451 | // sampling of scattering angle neglecting atomic motion |
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452 | G4double deltaMom = std::sqrt(deltaKinE*(deltaKinE + 2.0*electron_mass_c2)); |
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453 | G4double primaryMom = std::sqrt(primaryKinE*(primaryKinE + 2.0*electron_mass_c2)); |
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454 | |
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455 | G4double cost = deltaKinE * (primaryKinE + 2.0*electron_mass_c2) |
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456 | / (deltaMom * primaryMom); |
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457 | |
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458 | if (cost > 1.) cost = 1.; |
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459 | G4double sint = std::sqrt(1. - cost*cost); |
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460 | G4double phi = twopi * G4UniformRand(); |
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461 | G4double dirx = sint * std::cos(phi); |
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462 | G4double diry = sint * std::sin(phi); |
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463 | G4double dirz = cost; |
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464 | |
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465 | // Rotate to incident electron direction |
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466 | G4ThreeVector primaryDirection = track.GetMomentumDirection(); |
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467 | G4ThreeVector deltaDir(dirx,diry,dirz); |
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468 | deltaDir.rotateUz(primaryDirection); |
---|
469 | dirx = deltaDir.x(); |
---|
470 | diry = deltaDir.y(); |
---|
471 | dirz = deltaDir.z(); |
---|
472 | |
---|
473 | |
---|
474 | // Take into account atomic motion del is relative momentum of the motion |
---|
475 | // kinetic energy of the motion == bindingEnergy in V.Ivanchenko model |
---|
476 | |
---|
477 | cost = 2.0*G4UniformRand() - 1.0; |
---|
478 | sint = std::sqrt(1. - cost*cost); |
---|
479 | phi = twopi * G4UniformRand(); |
---|
480 | G4double del = std::sqrt(bindingEnergy *(bindingEnergy + 2.0*electron_mass_c2)) |
---|
481 | / deltaMom; |
---|
482 | dirx += del* sint * std::cos(phi); |
---|
483 | diry += del* sint * std::sin(phi); |
---|
484 | dirz += del* cost; |
---|
485 | |
---|
486 | // Find out new primary electron direction |
---|
487 | G4double finalPx = primaryMom*primaryDirection.x() - deltaMom*dirx; |
---|
488 | G4double finalPy = primaryMom*primaryDirection.y() - deltaMom*diry; |
---|
489 | G4double finalPz = primaryMom*primaryDirection.z() - deltaMom*dirz; |
---|
490 | |
---|
491 | // create G4DynamicParticle object for delta ray |
---|
492 | G4DynamicParticle* theDeltaRay = new G4DynamicParticle(); |
---|
493 | theDeltaRay->SetKineticEnergy(tDelta); |
---|
494 | G4double norm = 1.0/std::sqrt(dirx*dirx + diry*diry + dirz*dirz); |
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495 | dirx *= norm; |
---|
496 | diry *= norm; |
---|
497 | dirz *= norm; |
---|
498 | theDeltaRay->SetMomentumDirection(dirx, diry, dirz); |
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499 | theDeltaRay->SetDefinition(G4Electron::Electron()); |
---|
500 | |
---|
501 | G4double theEnergyDeposit = bindingEnergy; |
---|
502 | |
---|
503 | // fill ParticleChange |
---|
504 | // changed energy and momentum of the actual particle |
---|
505 | |
---|
506 | G4double finalKinEnergy = kineticEnergy - tDelta - theEnergyDeposit; |
---|
507 | if(finalKinEnergy < 0.0) { |
---|
508 | theEnergyDeposit += finalKinEnergy; |
---|
509 | finalKinEnergy = 0.0; |
---|
510 | aParticleChange.ProposeTrackStatus(fStopAndKill); |
---|
511 | |
---|
512 | } else { |
---|
513 | |
---|
514 | G4double norm = 1.0/std::sqrt(finalPx*finalPx+finalPy*finalPy+finalPz*finalPz); |
---|
515 | finalPx *= norm; |
---|
516 | finalPy *= norm; |
---|
517 | finalPz *= norm; |
---|
518 | aParticleChange.ProposeMomentumDirection(finalPx, finalPy, finalPz); |
---|
519 | } |
---|
520 | |
---|
521 | aParticleChange.ProposeEnergy(finalKinEnergy); |
---|
522 | |
---|
523 | // Generation of Fluorescence and Auger |
---|
524 | size_t nSecondaries = 0; |
---|
525 | size_t totalNumber = 1; |
---|
526 | std::vector<G4DynamicParticle*>* secondaryVector = 0; |
---|
527 | G4DynamicParticle* aSecondary = 0; |
---|
528 | G4ParticleDefinition* type = 0; |
---|
529 | |
---|
530 | // Fluorescence data start from element 6 |
---|
531 | |
---|
532 | if (Fluorescence() && Z > 5 && (bindingEnergy >= cutForPhotons |
---|
533 | || bindingEnergy >= cutForElectrons)) { |
---|
534 | |
---|
535 | secondaryVector = deexcitationManager.GenerateParticles(Z, shellId); |
---|
536 | |
---|
537 | if (secondaryVector != 0) { |
---|
538 | |
---|
539 | nSecondaries = secondaryVector->size(); |
---|
540 | for (size_t i = 0; i<nSecondaries; i++) { |
---|
541 | |
---|
542 | aSecondary = (*secondaryVector)[i]; |
---|
543 | if (aSecondary) { |
---|
544 | |
---|
545 | G4double e = aSecondary->GetKineticEnergy(); |
---|
546 | type = aSecondary->GetDefinition(); |
---|
547 | if (e < theEnergyDeposit && |
---|
548 | ((type == G4Gamma::Gamma() && e > cutForPhotons ) || |
---|
549 | (type == G4Electron::Electron() && e > cutForElectrons ))) { |
---|
550 | |
---|
551 | theEnergyDeposit -= e; |
---|
552 | totalNumber++; |
---|
553 | |
---|
554 | } else { |
---|
555 | |
---|
556 | delete aSecondary; |
---|
557 | (*secondaryVector)[i] = 0; |
---|
558 | } |
---|
559 | } |
---|
560 | } |
---|
561 | } |
---|
562 | } |
---|
563 | |
---|
564 | // Save delta-electrons |
---|
565 | |
---|
566 | aParticleChange.SetNumberOfSecondaries(totalNumber); |
---|
567 | aParticleChange.AddSecondary(theDeltaRay); |
---|
568 | |
---|
569 | // Save Fluorescence and Auger |
---|
570 | |
---|
571 | if (secondaryVector) { |
---|
572 | |
---|
573 | for (size_t l = 0; l < nSecondaries; l++) { |
---|
574 | |
---|
575 | aSecondary = (*secondaryVector)[l]; |
---|
576 | |
---|
577 | if(aSecondary) { |
---|
578 | |
---|
579 | aParticleChange.AddSecondary(aSecondary); |
---|
580 | } |
---|
581 | } |
---|
582 | delete secondaryVector; |
---|
583 | } |
---|
584 | |
---|
585 | if(theEnergyDeposit < 0.) { |
---|
586 | G4cout << "G4LowEnergyIonisation: Negative energy deposit: " |
---|
587 | << theEnergyDeposit/eV << " eV" << G4endl; |
---|
588 | theEnergyDeposit = 0.0; |
---|
589 | } |
---|
590 | aParticleChange.ProposeLocalEnergyDeposit(theEnergyDeposit); |
---|
591 | |
---|
592 | return G4VContinuousDiscreteProcess::PostStepDoIt(track, step); |
---|
593 | } |
---|
594 | |
---|
595 | |
---|
596 | void G4LowEnergyIonisation::PrintInfoDefinition() |
---|
597 | { |
---|
598 | G4String comments = "Total cross sections from EEDL database."; |
---|
599 | comments += "\n Gamma energy sampled from a parametrised formula."; |
---|
600 | comments += "\n Implementation of the continuous dE/dx part."; |
---|
601 | comments += "\n At present it can be used for electrons "; |
---|
602 | comments += "in the energy range [250eV,100GeV]."; |
---|
603 | comments += "\n The process must work with G4LowEnergyBremsstrahlung."; |
---|
604 | |
---|
605 | G4cout << G4endl << GetProcessName() << ": " << comments << G4endl; |
---|
606 | } |
---|
607 | |
---|
608 | G4bool G4LowEnergyIonisation::IsApplicable(const G4ParticleDefinition& particle) |
---|
609 | { |
---|
610 | return ( (&particle == G4Electron::Electron()) ); |
---|
611 | } |
---|
612 | |
---|
613 | std::vector<G4DynamicParticle*>* |
---|
614 | G4LowEnergyIonisation::DeexciteAtom(const G4MaterialCutsCouple* couple, |
---|
615 | G4double incidentEnergy, |
---|
616 | G4double eLoss) |
---|
617 | { |
---|
618 | // create vector of secondary particles |
---|
619 | const G4Material* material = couple->GetMaterial(); |
---|
620 | |
---|
621 | std::vector<G4DynamicParticle*>* partVector = |
---|
622 | new std::vector<G4DynamicParticle*>; |
---|
623 | |
---|
624 | if(eLoss > cutForPhotons && eLoss > cutForElectrons) { |
---|
625 | |
---|
626 | const G4AtomicTransitionManager* transitionManager = |
---|
627 | G4AtomicTransitionManager::Instance(); |
---|
628 | |
---|
629 | size_t nElements = material->GetNumberOfElements(); |
---|
630 | const G4ElementVector* theElementVector = material->GetElementVector(); |
---|
631 | |
---|
632 | std::vector<G4DynamicParticle*>* secVector = 0; |
---|
633 | G4DynamicParticle* aSecondary = 0; |
---|
634 | G4ParticleDefinition* type = 0; |
---|
635 | G4double e; |
---|
636 | G4ThreeVector position; |
---|
637 | G4int shell, shellId; |
---|
638 | |
---|
639 | // sample secondaries |
---|
640 | |
---|
641 | G4double eTot = 0.0; |
---|
642 | std::vector<G4int> n = |
---|
643 | shellVacancy->GenerateNumberOfIonisations(couple, |
---|
644 | incidentEnergy,eLoss); |
---|
645 | for (size_t i=0; i<nElements; i++) { |
---|
646 | |
---|
647 | G4int Z = (G4int)((*theElementVector)[i]->GetZ()); |
---|
648 | size_t nVacancies = n[i]; |
---|
649 | |
---|
650 | G4double maxE = transitionManager->Shell(Z, 0)->BindingEnergy(); |
---|
651 | |
---|
652 | if (nVacancies && Z > 5 && (maxE>cutForPhotons || maxE>cutForElectrons)) { |
---|
653 | |
---|
654 | for (size_t j=0; j<nVacancies; j++) { |
---|
655 | |
---|
656 | shell = crossSectionHandler->SelectRandomShell(Z, incidentEnergy); |
---|
657 | shellId = transitionManager->Shell(Z, shell)->ShellId(); |
---|
658 | G4double maxEShell = |
---|
659 | transitionManager->Shell(Z, shell)->BindingEnergy(); |
---|
660 | |
---|
661 | if (maxEShell>cutForPhotons || maxEShell>cutForElectrons ) { |
---|
662 | |
---|
663 | secVector = deexcitationManager.GenerateParticles(Z, shellId); |
---|
664 | |
---|
665 | if (secVector != 0) { |
---|
666 | |
---|
667 | for (size_t l = 0; l<secVector->size(); l++) { |
---|
668 | |
---|
669 | aSecondary = (*secVector)[l]; |
---|
670 | if (aSecondary != 0) { |
---|
671 | |
---|
672 | e = aSecondary->GetKineticEnergy(); |
---|
673 | type = aSecondary->GetDefinition(); |
---|
674 | if ( eTot + e <= eLoss && |
---|
675 | ((type == G4Gamma::Gamma() && e>cutForPhotons ) || |
---|
676 | (type == G4Electron::Electron() && e>cutForElectrons))) { |
---|
677 | |
---|
678 | eTot += e; |
---|
679 | partVector->push_back(aSecondary); |
---|
680 | |
---|
681 | } else { |
---|
682 | |
---|
683 | delete aSecondary; |
---|
684 | |
---|
685 | } |
---|
686 | } |
---|
687 | } |
---|
688 | delete secVector; |
---|
689 | } |
---|
690 | } |
---|
691 | } |
---|
692 | } |
---|
693 | } |
---|
694 | } |
---|
695 | return partVector; |
---|
696 | } |
---|
697 | |
---|
698 | G4double G4LowEnergyIonisation::GetMeanFreePath(const G4Track& track, |
---|
699 | G4double , // previousStepSize |
---|
700 | G4ForceCondition* cond) |
---|
701 | { |
---|
702 | *cond = NotForced; |
---|
703 | G4int index = (track.GetMaterialCutsCouple())->GetIndex(); |
---|
704 | const G4VEMDataSet* data = theMeanFreePath->GetComponent(index); |
---|
705 | G4double meanFreePath = data->FindValue(track.GetKineticEnergy()); |
---|
706 | return meanFreePath; |
---|
707 | } |
---|
708 | |
---|
709 | void G4LowEnergyIonisation::SetCutForLowEnSecPhotons(G4double cut) |
---|
710 | { |
---|
711 | cutForPhotons = cut; |
---|
712 | deexcitationManager.SetCutForSecondaryPhotons(cut); |
---|
713 | } |
---|
714 | |
---|
715 | void G4LowEnergyIonisation::SetCutForLowEnSecElectrons(G4double cut) |
---|
716 | { |
---|
717 | cutForElectrons = cut; |
---|
718 | deexcitationManager.SetCutForAugerElectrons(cut); |
---|
719 | } |
---|
720 | |
---|
721 | void G4LowEnergyIonisation::ActivateAuger(G4bool val) |
---|
722 | { |
---|
723 | deexcitationManager.ActivateAugerElectronProduction(val); |
---|
724 | } |
---|
725 | |
---|