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: G4hIonisation.cc,v 1.70 2008/01/14 11:59:45 vnivanch Exp $ |
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27 | // GEANT4 tag $Name: geant4-09-01-patch-02 $ |
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28 | // |
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29 | // ------------------------------------------------------------------- |
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30 | // |
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31 | // GEANT4 Class file |
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32 | // |
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33 | // |
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34 | // File name: G4hIonisation |
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35 | // |
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36 | // Author: Laszlo Urban |
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37 | // |
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38 | // Creation date: 30.05.1997 |
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39 | // |
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40 | // Modifications: |
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41 | // |
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42 | // corrected by L.Urban on 24/09/97 |
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43 | // several bugs corrected by L.Urban on 13/01/98 |
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44 | // 07-04-98 remove 'tracking cut' of the ionizing particle, mma |
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45 | // 22-10-98 cleanup L.Urban |
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46 | // 02-02-99 bugs fixed , L.Urban |
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47 | // 29-07-99 correction in BuildLossTable for low energy, L.Urban |
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48 | // 10-02-00 modifications , new e.m. structure, L.Urban |
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49 | // 10-08-00 V.Ivanchenko change BuildLambdaTable, in order to |
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50 | // simulate energy losses of ions; correction to |
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51 | // cross section for particles with spin 1 is inserted as well |
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52 | // 28-05-01 V.Ivanchenko minor changes to provide ANSI -wall compilation |
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53 | // 10-08-01 new methods Store/Retrieve PhysicsTable (mma) |
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54 | // 14-08-01 new function ComputeRestrictedMeandEdx() + 'cleanup' (mma) |
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55 | // 29-08-01 PostStepDoIt: correction for spin 1/2 (instead of 1) (mma) |
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56 | // 17-09-01 migration of Materials to pure STL (mma) |
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57 | // 25-09-01 completion of RetrievePhysicsTable() (mma) |
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58 | // 29-10-01 all static functions no more inlined |
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59 | // 08-11-01 Charge renamed zparticle; added to the dedx |
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60 | // 27-03-02 Bug fix in scaling of lambda table (V.Ivanchenko) |
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61 | // 09-04-02 Update calculation of tables for GenericIons (V.Ivanchenko) |
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62 | // 30-04-02 V.Ivanchenko update to new design |
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63 | // 04-12-02 Add verbose level definition (VI) |
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64 | // 23-12-02 Change interface in order to move to cut per region (V.Ivanchenko) |
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65 | // 26-12-02 Secondary production moved to derived classes (V.Ivanchenko) |
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66 | // 13-02-03 SubCutoff regime is assigned to a region (V.Ivanchenko) |
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67 | // 23-05-03 Define default integral + BohrFluctuations (V.Ivanchenko) |
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68 | // 03-06-03 Fix initialisation problem for STD ionisation (V.Ivanchenko) |
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69 | // 04-08-03 Set integral=false to be default (V.Ivanchenko) |
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70 | // 08-08-03 STD substitute standard (V.Ivanchenko) |
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71 | // 12-11-03 G4EnergyLossSTD -> G4EnergyLossProcess (V.Ivanchenko) |
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72 | // 27-05-04 Set integral to be a default regime (V.Ivanchenko) |
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73 | // 08-11-04 Migration to new interface of Store/Retrieve tables (V.Ivantchenko) |
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74 | // 24-03-05 Optimize internal interfaces (V.Ivantchenko) |
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75 | // 12-08-05 SetStepLimits(0.2, 0.1*mm) (mma) |
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76 | // 10-01-06 SetStepLimits -> SetStepFunction (V.Ivanchenko) |
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77 | // 26-05-06 scale negative particles from pi- and pbar, |
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78 | // positive from pi+ and p (VI) |
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79 | // 14-01-07 use SetEmModel() and SetFluctModel() from G4VEnergyLossProcess (mma) |
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80 | // |
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81 | // ------------------------------------------------------------------- |
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82 | // |
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83 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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84 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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85 | |
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86 | #include "G4hIonisation.hh" |
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87 | #include "G4Electron.hh" |
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88 | #include "G4Proton.hh" |
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89 | #include "G4AntiProton.hh" |
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90 | #include "G4BraggModel.hh" |
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91 | #include "G4BetheBlochModel.hh" |
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92 | #include "G4UniversalFluctuation.hh" |
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93 | #include "G4BohrFluctuations.hh" |
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94 | #include "G4UnitsTable.hh" |
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95 | #include "G4PionPlus.hh" |
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96 | #include "G4PionMinus.hh" |
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97 | #include "G4LossTableManager.hh" |
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98 | |
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99 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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100 | |
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101 | using namespace std; |
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102 | |
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103 | G4hIonisation::G4hIonisation(const G4String& name) |
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104 | : G4VEnergyLossProcess(name), |
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105 | theParticle(0), |
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106 | theBaseParticle(0), |
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107 | isInitialised(false) |
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108 | { |
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109 | SetStepFunction(0.2, 1*mm); |
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110 | SetIntegral(true); |
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111 | SetVerboseLevel(1); |
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112 | mass = 0.0; |
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113 | ratio = 0.0; |
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114 | corr = G4LossTableManager::Instance()->EmCorrections(); |
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115 | nuclearStopping = true; |
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116 | } |
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117 | |
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118 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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119 | |
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120 | G4hIonisation::~G4hIonisation() |
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121 | {} |
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122 | |
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123 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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124 | |
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125 | void G4hIonisation::InitialiseEnergyLossProcess( |
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126 | const G4ParticleDefinition* part, |
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127 | const G4ParticleDefinition* bpart) |
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128 | { |
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129 | if(isInitialised) return; |
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130 | |
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131 | theParticle = part; |
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132 | |
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133 | G4String pname = part->GetParticleName(); |
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134 | |
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135 | // standard base particles |
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136 | if(part == bpart || pname == "proton" || |
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137 | pname == "anti_proton" || pname == "pi+" || pname == "pi-" ) |
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138 | theBaseParticle = 0; |
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139 | |
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140 | // select base particle |
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141 | else if(bpart == 0) { |
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142 | |
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143 | if(pname == "kaon+") theBaseParticle = G4PionPlus::PionPlus(); |
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144 | else if(pname == "kaon-") theBaseParticle = G4PionMinus::PionMinus(); |
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145 | else if(part->GetPDGCharge() > 0.0) theBaseParticle = G4Proton::Proton(); |
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146 | else theBaseParticle = G4AntiProton::AntiProton(); |
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147 | |
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148 | } else theBaseParticle = bpart; |
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149 | |
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150 | SetBaseParticle(theBaseParticle); |
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151 | SetSecondaryParticle(G4Electron::Electron()); |
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152 | mass = theParticle->GetPDGMass(); |
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153 | ratio = electron_mass_c2/mass; |
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154 | massratio = 1.0; |
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155 | if(theBaseParticle) massratio = theBaseParticle->GetPDGMass()/mass; |
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156 | |
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157 | if (!EmModel(1)) SetEmModel(new G4BraggModel(),1); |
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158 | EmModel(1)->SetLowEnergyLimit(100*eV); |
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159 | eth = 2.0*MeV*mass/proton_mass_c2; |
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160 | ethnuc = eth*50.0; |
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161 | EmModel(1)->SetHighEnergyLimit(eth); |
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162 | if (!FluctModel()) SetFluctModel(new G4UniversalFluctuation()); |
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163 | AddEmModel(1, EmModel(1), FluctModel()); |
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164 | |
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165 | if (!EmModel(2)) SetEmModel(new G4BetheBlochModel(),2); |
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166 | EmModel(2)->SetLowEnergyLimit(eth); |
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167 | EmModel(2)->SetHighEnergyLimit(100*TeV); |
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168 | AddEmModel(2, EmModel(2), FluctModel()); |
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169 | |
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170 | isInitialised = true; |
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171 | } |
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172 | |
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173 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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174 | |
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175 | void G4hIonisation::PrintInfo() |
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176 | { |
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177 | if(EmModel(1) && EmModel(2)) |
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178 | G4cout << " Scaling relation is used from proton dE/dx and range." |
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179 | << "\n Delta cross sections and sampling from " |
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180 | << EmModel(2)->GetName() << " model for scaled energy > " |
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181 | << eth/MeV << " MeV" |
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182 | << "\n Parametrisation from " |
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183 | << EmModel(1)->GetName() << " for protons below." |
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184 | << " NuclearStopping= " << nuclearStopping |
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185 | << G4endl; |
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186 | } |
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187 | |
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188 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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189 | |
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190 | void G4hIonisation::CorrectionsAlongStep(const G4MaterialCutsCouple* couple, |
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191 | const G4DynamicParticle* dp, |
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192 | G4double& eloss, |
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193 | G4double& s) |
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194 | { |
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195 | G4double ekin = dp->GetKineticEnergy(); |
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196 | if(nuclearStopping && ekin < ethnuc) { |
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197 | G4double nloss = s*corr->NuclearDEDX(theParticle,couple->GetMaterial(), |
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198 | ekin - eloss*0.5); |
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199 | eloss += nloss; |
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200 | // G4cout << "G4ionIonisation::CorrectionsAlongStep: e= " << preKinEnergy |
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201 | // << " de= " << eloss << " NIEL= " << nloss << G4endl; |
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202 | fParticleChange.ProposeNonIonizingEnergyDeposit(nloss); |
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203 | } |
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204 | } |
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205 | |
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206 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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