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: G4MuIonisation.cc,v 1.59 2009/02/26 11:04:20 vnivanch Exp $ |
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27 | // GEANT4 tag $Name: geant4-09-03 $ |
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28 | // |
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29 | // ------------------------------------------------------------------- |
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30 | // |
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31 | // GEANT4 Class file |
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32 | // |
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33 | // |
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34 | // File name: G4MuIonisation |
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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: 30.09.1997 |
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39 | // |
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40 | // Modifications: |
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41 | // |
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42 | // 08-04-98 remove 'tracking cut' of the ionizing particle (mma) |
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43 | // 26-10-98 new stuff from R.Kokoulin + cleanup , L.Urban |
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44 | // 10-02-00 modifications , new e.m. structure, L.Urban |
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45 | // 23-03-01 R.Kokoulin's correction is commented out, L.Urban |
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46 | // 29-05-01 V.Ivanchenko minor changes to provide ANSI -wall compilation |
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47 | // 10-08-01 new methods Store/Retrieve PhysicsTable (mma) |
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48 | // 28-08-01 new function ComputeRestrictedMeandEdx() + 'cleanup' (mma) |
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49 | // 17-09-01 migration of Materials to pure STL (mma) |
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50 | // 26-09-01 completion of RetrievePhysicsTable (mma) |
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51 | // 29-10-01 all static functions no more inlined (mma) |
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52 | // 07-11-01 correction(Tmax+xsection computation) L.Urban |
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53 | // 08-11-01 particleMass becomes a local variable (mma) |
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54 | // 10-05-02 V.Ivanchenko update to new design |
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55 | // 04-12-02 V.Ivanchenko the low energy limit for Kokoulin model to 10 GeV |
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56 | // 23-12-02 Change interface in order to move to cut per region (V.Ivanchenko) |
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57 | // 26-12-02 Secondary production moved to derived classes (V.Ivanchenko) |
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58 | // 13-02-03 SubCutoff regime is assigned to a region (V.Ivanchenko) |
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59 | // 23-05-03 Define default integral + BohrFluctuations (V.Ivanchenko) |
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60 | // 03-06-03 Add SetIntegral method to choose fluctuation model (V.Ivanchenko) |
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61 | // 03-06-03 Fix initialisation problem for STD ionisation (V.Ivanchenko) |
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62 | // 04-08-03 Set integral=false to be default (V.Ivanchenko) |
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63 | // 08-08-03 STD substitute standard (V.Ivanchenko) |
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64 | // 12-11-03 G4EnergyLossSTD -> G4EnergyLossProcess (V.Ivanchenko) |
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65 | // 10-02-04 Calculation of radiative corrections using R.Kokoulin model (V.Ivanchenko) |
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66 | // 27-05-04 Set integral to be a default regime (V.Ivanchenko) |
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67 | // 17-08-04 Utilise mu+ tables for mu- (V.Ivanchenko) |
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68 | // 08-11-04 Migration to new interface of Store/Retrieve tables (V.Ivantchenko) |
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69 | // 08-04-05 Major optimisation of internal interfaces (V.Ivantchenko) |
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70 | // 12-08-05 SetStepLimits(0.2, 0.1*mm) (mma) |
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71 | // 02-09-05 SetStepLimits(0.2, 1*mm) (V.Ivantchenko) |
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72 | // 12-08-05 SetStepLimits(0.2, 0.1*mm) + integral off (V.Ivantchenko) |
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73 | // 10-01-06 SetStepLimits -> SetStepFunction (V.Ivantchenko) |
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74 | // |
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75 | // ------------------------------------------------------------------- |
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76 | // |
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77 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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78 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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79 | |
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80 | #include "G4MuIonisation.hh" |
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81 | #include "G4Electron.hh" |
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82 | #include "G4MuonPlus.hh" |
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83 | #include "G4MuonMinus.hh" |
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84 | #include "G4BraggModel.hh" |
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85 | #include "G4BetheBlochModel.hh" |
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86 | #include "G4MuBetheBlochModel.hh" |
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87 | #include "G4UniversalFluctuation.hh" |
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88 | #include "G4IonFluctuations.hh" |
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89 | #include "G4BohrFluctuations.hh" |
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90 | #include "G4UnitsTable.hh" |
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91 | |
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92 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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93 | |
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94 | using namespace std; |
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95 | |
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96 | G4MuIonisation::G4MuIonisation(const G4String& name) |
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97 | : G4VEnergyLossProcess(name), |
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98 | theParticle(0), |
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99 | theBaseParticle(0), |
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100 | isInitialised(false) |
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101 | { |
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102 | // SetStepFunction(0.2, 1*mm); |
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103 | //SetIntegral(true); |
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104 | //SetVerboseLevel(1); |
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105 | SetProcessSubType(fIonisation); |
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106 | } |
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107 | |
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108 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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109 | |
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110 | G4MuIonisation::~G4MuIonisation() |
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111 | {} |
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112 | |
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113 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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114 | |
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115 | G4bool G4MuIonisation::IsApplicable(const G4ParticleDefinition& p) |
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116 | { |
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117 | return (p.GetPDGCharge() != 0.0 && p.GetPDGMass() > 10.0*MeV); |
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118 | } |
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119 | |
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120 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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121 | |
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122 | G4double G4MuIonisation::MinPrimaryEnergy(const G4ParticleDefinition*, |
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123 | const G4Material*, |
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124 | G4double cut) |
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125 | { |
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126 | G4double x = 0.5*cut/electron_mass_c2; |
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127 | G4double g = x*ratio + std::sqrt((1. + x)*(1. + x*ratio*ratio)); |
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128 | return mass*(g - 1.0); |
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129 | } |
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130 | |
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131 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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132 | |
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133 | void G4MuIonisation::InitialiseEnergyLossProcess(const G4ParticleDefinition* part, |
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134 | const G4ParticleDefinition* bpart) |
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135 | { |
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136 | if(!isInitialised) { |
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137 | |
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138 | theParticle = part; |
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139 | theBaseParticle = bpart; |
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140 | |
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141 | mass = theParticle->GetPDGMass(); |
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142 | SetSecondaryParticle(G4Electron::Electron()); |
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143 | |
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144 | // Bragg peak model |
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145 | if (!EmModel(1)) SetEmModel(new G4BraggModel(),1); |
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146 | EmModel(1)->SetLowEnergyLimit(MinKinEnergy()); |
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147 | EmModel(1)->SetHighEnergyLimit(0.2*MeV); |
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148 | AddEmModel(1, EmModel(1), new G4IonFluctuations()); |
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149 | |
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150 | // high energy fluctuation model |
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151 | if (!FluctModel()) SetFluctModel(new G4UniversalFluctuation()); |
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152 | |
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153 | // moderate energy model |
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154 | if (!EmModel(2)) SetEmModel(new G4BetheBlochModel(),2); |
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155 | EmModel(2)->SetLowEnergyLimit(0.2*MeV); |
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156 | EmModel(2)->SetHighEnergyLimit(1.0*GeV); |
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157 | AddEmModel(2, EmModel(2), FluctModel()); |
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158 | |
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159 | // high energy model |
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160 | if (!EmModel(3)) SetEmModel(new G4MuBetheBlochModel(),3); |
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161 | EmModel(3)->SetLowEnergyLimit(1.0*GeV); |
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162 | EmModel(3)->SetHighEnergyLimit(MaxKinEnergy()); |
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163 | AddEmModel(3, EmModel(3), FluctModel()); |
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164 | |
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165 | ratio = electron_mass_c2/mass; |
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166 | isInitialised = true; |
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167 | } |
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168 | } |
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169 | |
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170 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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171 | |
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172 | void G4MuIonisation::PrintInfo() |
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173 | {} |
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174 | |
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175 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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176 | |
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177 | |
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178 | |
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179 | |
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