1 | // |
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2 | // ******************************************************************** |
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3 | // * License and Disclaimer * |
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11 | // * Neither the authors of this software system, nor their employing * |
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15 | // * use. Please see the license in the file LICENSE and URL above * |
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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 | // |
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27 | // $Id: G4PAIySection.hh,v 1.1 2007/10/01 17:45:14 vnivanch Exp $ |
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28 | // GEANT4 tag $Name: geant4-09-02-ref-02 $ |
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29 | // |
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30 | // |
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31 | // G4PAIySection.hh -- header file |
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32 | // |
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33 | // |
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34 | // Preparation of ionizing collision cross section according to Photo Absorption |
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35 | // Ionization (PAI) model for simulation of ionization energy losses in very thin |
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36 | // absorbers. Author: Vladimir.Grichine@cern.ch |
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37 | // |
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38 | // History: |
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39 | // |
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40 | // 01.10.07, V.Ivanchenko create using V.Grichine G4PAIxSection class |
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41 | |
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42 | #ifndef G4PAIYSECTION_HH |
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43 | #define G4PAIYSECTION_HH |
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44 | |
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45 | #include "G4ios.hh" |
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46 | #include "globals.hh" |
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47 | #include "Randomize.hh" |
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48 | |
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49 | #include "G4SandiaTable.hh" |
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50 | |
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51 | class G4PAIySection |
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52 | { |
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53 | public: |
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54 | |
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55 | G4PAIySection(); |
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56 | |
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57 | ~G4PAIySection(); |
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58 | |
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59 | void Initialize(const G4Material* material, |
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60 | G4double maxEnergyTransfer, |
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61 | G4double betaGammaSq); |
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62 | |
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63 | void InitPAI() ; |
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64 | |
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65 | void NormShift( G4double betaGammaSq ) ; |
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66 | |
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67 | void SplainPAI( G4double betaGammaSq ) ; |
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68 | |
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69 | // Physical methods |
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70 | G4double RutherfordIntegral( G4int intervalNumber, |
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71 | G4double limitLow, |
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72 | G4double limitHigh ) ; |
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73 | |
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74 | G4double ImPartDielectricConst( G4int intervalNumber, |
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75 | G4double energy ) ; |
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76 | |
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77 | G4double RePartDielectricConst(G4double energy) ; |
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78 | |
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79 | G4double DifPAIySection( G4int intervalNumber, |
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80 | G4double betaGammaSq ) ; |
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81 | |
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82 | G4double PAIdNdxCerenkov( G4int intervalNumber, |
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83 | G4double betaGammaSq ) ; |
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84 | |
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85 | G4double PAIdNdxPlasmon( G4int intervalNumber, |
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86 | G4double betaGammaSq ) ; |
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87 | |
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88 | void IntegralPAIySection() ; |
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89 | void IntegralCerenkov() ; |
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90 | void IntegralPlasmon() ; |
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91 | |
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92 | G4double SumOverInterval(G4int intervalNumber) ; |
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93 | G4double SumOverIntervaldEdx(G4int intervalNumber) ; |
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94 | G4double SumOverInterCerenkov(G4int intervalNumber) ; |
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95 | G4double SumOverInterPlasmon(G4int intervalNumber) ; |
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96 | |
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97 | G4double SumOverBorder( G4int intervalNumber, |
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98 | G4double energy ) ; |
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99 | G4double SumOverBorderdEdx( G4int intervalNumber, |
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100 | G4double energy ) ; |
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101 | G4double SumOverBordCerenkov( G4int intervalNumber, |
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102 | G4double energy ) ; |
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103 | G4double SumOverBordPlasmon( G4int intervalNumber, |
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104 | G4double energy ) ; |
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105 | |
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106 | G4double GetStepEnergyLoss( G4double step ) ; |
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107 | G4double GetStepCerenkovLoss( G4double step ) ; |
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108 | G4double GetStepPlasmonLoss( G4double step ) ; |
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109 | |
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110 | // Inline access functions |
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111 | |
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112 | G4int GetNumberOfGammas() const { return fNumberOfGammas ; } |
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113 | |
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114 | G4int GetSplineSize() const { return fSplineNumber ; } |
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115 | |
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116 | G4int GetIntervalNumber() const { return fIntervalNumber ; } |
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117 | |
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118 | G4double GetEnergyInterval(G4int i){ return fEnergyInterval[i] ; } |
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119 | |
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120 | G4double GetDifPAIySection(G4int i){ return fDifPAIySection[i] ; } |
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121 | G4double GetPAIdNdxCrenkov(G4int i){ return fdNdxCerenkov[i] ; } |
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122 | G4double GetPAIdNdxPlasmon(G4int i){ return fdNdxPlasmon[i] ; } |
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123 | |
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124 | G4double GetMeanEnergyLoss() const {return fIntegralPAIySection[0] ; } |
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125 | G4double GetMeanCerenkovLoss() const {return fIntegralCerenkov[0] ; } |
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126 | G4double GetMeanPlasmonLoss() const {return fIntegralPlasmon[0] ; } |
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127 | |
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128 | G4double GetNormalizationCof() const { return fNormalizationCof ; } |
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129 | |
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130 | inline G4double GetPAItable(G4int i,G4int j) const ; |
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131 | |
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132 | inline G4double GetLorentzFactor(G4int i) const ; |
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133 | |
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134 | inline G4double GetSplineEnergy(G4int i) const ; |
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135 | |
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136 | inline G4double GetIntegralPAIySection(G4int i) const ; |
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137 | inline G4double GetIntegralPAIdEdx(G4int i) const ; |
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138 | inline G4double GetIntegralCerenkov(G4int i) const ; |
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139 | inline G4double GetIntegralPlasmon(G4int i) const ; |
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140 | |
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141 | private : |
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142 | |
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143 | // Local class constants |
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144 | |
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145 | static const G4double fDelta ; // energy shift from interval border = 0.001 |
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146 | static const G4double fError ; // error in lin-log approximation = 0.005 |
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147 | |
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148 | static G4int fNumberOfGammas ; // = 111 ; |
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149 | static const G4double fLorentzFactor[112] ; // static gamma array |
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150 | |
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151 | static |
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152 | const G4int fRefGammaNumber ; // The number of gamma for creation of spline (15) |
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153 | |
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154 | G4int fIntervalNumber ; // The number of energy intervals |
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155 | G4double fNormalizationCof ; // Normalization cof for PhotoAbsorptionXsection |
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156 | |
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157 | G4double fDensity ; // Current density |
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158 | G4double fElectronDensity ; // Current electron (number) density |
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159 | G4int fSplineNumber ; // Current size of spline |
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160 | |
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161 | G4SandiaTable* fSandia; |
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162 | |
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163 | G4double fEnergyInterval[500] ; |
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164 | G4double fA1[500] ; |
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165 | G4double fA2[500] ; |
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166 | G4double fA3[500] ; |
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167 | G4double fA4[500] ; |
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168 | |
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169 | static |
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170 | const G4int fMaxSplineSize ; // Max size of output splain arrays = 500 |
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171 | |
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172 | G4double fSplineEnergy[500] ; // energy points of splain |
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173 | G4double fRePartDielectricConst[500] ; // Real part of dielectric const |
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174 | G4double fImPartDielectricConst[500] ; // Imaginary part of dielectric const |
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175 | G4double fIntegralTerm[500] ; // Integral term in PAI cross section |
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176 | G4double fDifPAIySection[500] ; // Differential PAI cross section |
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177 | G4double fdNdxCerenkov[500] ; // dNdx of Cerenkov collisions |
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178 | G4double fdNdxPlasmon[500] ; // dNdx of Plasmon collisions |
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179 | |
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180 | G4double fIntegralPAIySection[500] ; // Integral PAI cross section ? |
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181 | G4double fIntegralPAIdEdx[500] ; // Integral PAI dEdx ? |
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182 | G4double fIntegralCerenkov[500] ; // Integral Cerenkov N>omega ? |
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183 | G4double fIntegralPlasmon[500] ; // Integral Plasmon N>omega ? |
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184 | |
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185 | G4double fPAItable[500][112] ; // Output array |
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186 | |
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187 | } ; |
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188 | |
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189 | //////////////// Inline methods ////////////////////////////////// |
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190 | // |
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191 | |
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192 | |
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193 | inline G4double G4PAIySection::GetPAItable(G4int i, G4int j) const |
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194 | { |
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195 | return fPAItable[i][j] ; |
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196 | } |
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197 | |
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198 | inline G4double G4PAIySection::GetLorentzFactor(G4int j) const |
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199 | { |
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200 | return fLorentzFactor[j] ; |
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201 | } |
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202 | |
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203 | inline G4double G4PAIySection::GetSplineEnergy(G4int i) const |
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204 | { |
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205 | if(i < 1 || i > fSplineNumber) |
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206 | { |
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207 | G4Exception("Invalid argument in G4PAIySection::GetSplineEnergy"); |
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208 | } |
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209 | return fSplineEnergy[i] ; |
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210 | } |
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211 | |
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212 | inline G4double G4PAIySection::GetIntegralPAIySection(G4int i) const |
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213 | { |
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214 | if(i < 1 || i > fSplineNumber) |
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215 | { |
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216 | G4Exception("Invalid argument in G4PAIySection::GetIntegralPAIySection"); |
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217 | } |
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218 | return fIntegralPAIySection[i] ; |
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219 | } |
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220 | |
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221 | inline G4double G4PAIySection::GetIntegralPAIdEdx(G4int i) const |
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222 | { |
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223 | if(i < 1 || i > fSplineNumber) |
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224 | { |
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225 | G4Exception("Invalid argument in G4PAIySection::GetIntegralPAIySection"); |
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226 | } |
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227 | return fIntegralPAIdEdx[i] ; |
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228 | } |
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229 | |
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230 | inline G4double G4PAIySection::GetIntegralCerenkov(G4int i) const |
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231 | { |
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232 | if(i < 1 || i > fSplineNumber) |
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233 | { |
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234 | G4Exception("Invalid argument in G4PAIySection::GetIntegralCerenkov"); |
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235 | } |
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236 | return fIntegralCerenkov[i] ; |
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237 | } |
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238 | |
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239 | inline G4double G4PAIySection::GetIntegralPlasmon(G4int i) const |
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240 | { |
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241 | if(i < 1 || i > fSplineNumber) |
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242 | { |
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243 | G4Exception("Invalid argument in G4PAIySection::GetIntegralPlasmon"); |
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244 | } |
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245 | return fIntegralPlasmon[i] ; |
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246 | } |
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247 | |
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248 | #endif |
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249 | |
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250 | // ----------------- end of G4PAIySection header file ------------------- |
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