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.hh,v 1.38 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 header 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 | // corrected by L.Urban on 13/01/98 |
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44 | // bugs fixed by L.Urban on 02/02/99 |
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45 | // 10/02/00 modifications , new e.m. structure, L.Urban |
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46 | // 10-08-01 new methods Store/Retrieve PhysicsTable (mma) |
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47 | // 14-08-01 new function ComputeRestrictedMeandEdx() + 'cleanup' (mma) |
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48 | // 19-09-01 come back to previous process name "hIoni" |
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49 | // 29-10-01 all static functions no more inlined |
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50 | // 07-01-02 new design of em processes (V.Ivanchenko) |
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51 | // 26-12-02 secondary production moved to derived classes (VI) |
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52 | // 24-01-03 Make models region aware (V.Ivanchenko) |
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53 | // 05-02-03 Fix compilation warnings (V.Ivanchenko) |
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54 | // 13-02-03 SubCutoff regime is assigned to a region (V.Ivanchenko) |
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55 | // 15-02-03 Add control on delta pointer (V.Ivanchenko) |
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56 | // 23-05-03 Add fluctuation model as a member function (V.Ivanchenko) |
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57 | // 03-06-03 Fix initialisation problem for STD ionisation (V.Ivanchenko) |
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58 | // 16-06-03 ShortLived are not applicable any more (V.Ivanchenko) |
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59 | // 08-08-03 STD substitute standard (V.Ivanchenko) |
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60 | // 12-11-03 G4EnergyLossSTD -> G4EnergyLossProcess (V.Ivanchenko) |
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61 | // 21-01-04 Migrade to G4ParticleChangeForLoss (V.Ivanchenko) |
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62 | // 08-11-04 Migration to new interface of Store/Retrieve tables (V.Ivantchenko) |
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63 | // 08-04-05 Major optimisation of internal interfaces (V.Ivantchenko) |
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64 | // 11-04-04 Move MaxSecondaryEnergy to models (V.Ivanchenko) |
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65 | // |
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66 | // Class Description: |
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67 | // |
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68 | // This class manages the ionisation process for hadrons. |
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69 | // it inherites from G4VContinuousDiscreteProcess via G4VEnergyLoss. |
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70 | // |
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71 | |
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72 | // ------------------------------------------------------------------- |
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73 | // |
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74 | |
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75 | #ifndef G4hIonisation_h |
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76 | #define G4hIonisation_h 1 |
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77 | |
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78 | #include "G4VEnergyLossProcess.hh" |
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79 | #include "G4Electron.hh" |
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80 | #include "G4Positron.hh" |
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81 | #include "globals.hh" |
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82 | #include "G4VEmModel.hh" |
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83 | #include "G4EmCorrections.hh" |
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84 | |
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85 | class G4Material; |
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86 | |
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87 | class G4hIonisation : public G4VEnergyLossProcess |
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88 | { |
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89 | |
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90 | public: |
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91 | |
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92 | G4hIonisation(const G4String& name = "hIoni"); |
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93 | |
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94 | virtual ~G4hIonisation(); |
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95 | |
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96 | G4bool IsApplicable(const G4ParticleDefinition& p); |
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97 | |
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98 | G4double MinPrimaryEnergy(const G4ParticleDefinition* p, |
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99 | const G4Material*, G4double cut); |
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100 | |
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101 | // Print out of the class parameters |
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102 | virtual void PrintInfo(); |
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103 | |
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104 | void ActivateNuclearStopping(G4bool); |
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105 | |
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106 | protected: |
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107 | |
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108 | void CorrectionsAlongStep( |
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109 | const G4MaterialCutsCouple*, |
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110 | const G4DynamicParticle*, |
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111 | G4double& eloss, |
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112 | G4double& length); |
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113 | |
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114 | virtual void InitialiseEnergyLossProcess(const G4ParticleDefinition*, |
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115 | const G4ParticleDefinition*); |
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116 | |
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117 | private: |
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118 | |
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119 | // hide assignment operator |
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120 | G4hIonisation & operator=(const G4hIonisation &right); |
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121 | G4hIonisation(const G4hIonisation&); |
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122 | |
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123 | G4double mass; |
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124 | G4double ratio; |
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125 | |
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126 | const G4ParticleDefinition* theParticle; |
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127 | const G4ParticleDefinition* theBaseParticle; |
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128 | G4EmCorrections* corr; |
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129 | |
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130 | G4bool isInitialised; |
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131 | G4bool nuclearStopping; |
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132 | |
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133 | G4double eth; |
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134 | G4double ethnuc; |
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135 | G4double massratio; |
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136 | |
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137 | }; |
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138 | |
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139 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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140 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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141 | |
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142 | inline G4bool G4hIonisation::IsApplicable(const G4ParticleDefinition& p) |
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143 | { |
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144 | return (p.GetPDGCharge() != 0.0 && p.GetPDGMass() > 10.0*MeV && |
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145 | !p.IsShortLived()); |
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146 | } |
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147 | |
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148 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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149 | |
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150 | inline G4double G4hIonisation::MinPrimaryEnergy(const G4ParticleDefinition*, |
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151 | const G4Material*, |
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152 | G4double cut) |
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153 | { |
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154 | G4double x = 0.5*cut/electron_mass_c2; |
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155 | G4double y = electron_mass_c2/mass; |
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156 | G4double g = x*y + std::sqrt((1. + x)*(1. + x*y*y)); |
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157 | return mass*(g - 1.0); |
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158 | } |
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159 | |
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160 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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161 | |
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162 | inline void G4hIonisation::ActivateNuclearStopping(G4bool val) |
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163 | { |
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164 | nuclearStopping = val; |
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165 | } |
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166 | |
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167 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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168 | |
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169 | #endif |
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