[819] | 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 | // |
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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: $ |
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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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