[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 | // ------------------------------------------------------------------- |
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| 28 | // |
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| 29 | // GEANT4 Class file |
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| 30 | // |
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| 31 | // |
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| 32 | // File name: G4hICRU49p |
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| 33 | // |
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| 34 | // Author: V.Ivanchenko (Vladimir.Ivanchenko@cern.ch) |
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| 35 | // |
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| 36 | // Creation date: 20 July 2000 |
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| 37 | // |
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| 38 | // Modifications: |
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| 39 | // 20/07/2000 V.Ivanchenko First implementation |
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| 40 | // 18/09/2000 V.Ivanchenko clean up - all variable are the same as in ICRU |
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| 41 | // 03/10/2000 V.Ivanchenko clean up accoding to CodeWizard |
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| 42 | // 10/05/2001 V.Ivanchenko Clean up againist Linux compilation with -Wall |
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| 43 | // |
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| 44 | // Class Description: |
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| 45 | // |
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| 46 | // Electronic stopping power parametrised according to |
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| 47 | // ICRU Report N49, 1993, for protons. |
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| 48 | // |
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| 49 | // Class Description: End |
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| 50 | // |
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| 51 | // ------------------------------------------------------------------- |
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| 52 | // |
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| 53 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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| 54 | |
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| 55 | #include "G4hICRU49p.hh" |
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| 56 | #include "G4UnitsTable.hh" |
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| 57 | #include "globals.hh" |
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| 58 | #include "G4Material.hh" |
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| 59 | |
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| 60 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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| 61 | |
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| 62 | G4hICRU49p::G4hICRU49p():G4VhElectronicStoppingPower(), |
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| 63 | iMolecula(0), |
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| 64 | protonMassAMU(1.007276) |
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| 65 | {;} |
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| 66 | |
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| 67 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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| 68 | |
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| 69 | G4hICRU49p::~G4hICRU49p() |
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| 70 | {;} |
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| 71 | |
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| 72 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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| 73 | |
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| 74 | G4bool G4hICRU49p::HasMaterial(const G4Material* material) |
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| 75 | { |
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| 76 | G4String chFormula = material->GetChemicalFormula() ; |
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| 77 | G4String myFormula = G4String(" ") ; |
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| 78 | |
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| 79 | if (myFormula == chFormula ) { |
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| 80 | if(1 == (material->GetNumberOfElements())) return true; |
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| 81 | return false ; |
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| 82 | } |
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| 83 | |
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| 84 | // ICRU Report N49, 1993. Power's model for He. |
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| 85 | const size_t numberOfMolecula = 11 ; |
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| 86 | static G4String name[numberOfMolecula] = { |
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| 87 | "Al_2O_3", "CO_2", "CH_4", |
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| 88 | "(C_2H_4)_N-Polyethylene", "(C_2H_4)_N-Polypropylene", "(C_8H_8)_N", |
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| 89 | "C_3H_8", "SiO_2", "H_2O", |
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| 90 | "H_2O-Gas", "Graphite" } ; |
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| 91 | |
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| 92 | // Special treatment for water in gas state |
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| 93 | const G4State theState = material->GetState() ; |
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| 94 | |
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| 95 | myFormula = G4String("H_2O"); |
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| 96 | if( theState == kStateGas && myFormula == chFormula) { |
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| 97 | chFormula = G4String("H_2O-Gas"); |
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| 98 | } |
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| 99 | |
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| 100 | // Search for the material in the table |
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| 101 | for (size_t i=0; i<numberOfMolecula; i++) { |
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| 102 | if (chFormula == name[i]) { |
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| 103 | SetMoleculaNumber(i) ; |
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| 104 | return true ; |
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| 105 | } |
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| 106 | } |
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| 107 | return false ; |
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| 108 | } |
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| 109 | |
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| 110 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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| 111 | |
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| 112 | G4double G4hICRU49p::StoppingPower(const G4Material* material, |
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| 113 | G4double kineticEnergy) |
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| 114 | { |
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| 115 | G4double ionloss = 0.0 ; |
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| 116 | |
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| 117 | // pure material (normally not the case for this function) |
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| 118 | if(1 == (material->GetNumberOfElements())) { |
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| 119 | G4double z = material->GetZ() ; |
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| 120 | ionloss = ElectronicStoppingPower( z, kineticEnergy ) ; |
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| 121 | |
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| 122 | } else if (iMolecula < 11) { |
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| 123 | |
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| 124 | // The data and the fit from: |
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| 125 | // ICRU Report N49, 1993. Ziegler's model for protons. |
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| 126 | // Proton kinetic energy for parametrisation (keV/amu) |
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| 127 | |
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| 128 | G4double T = kineticEnergy/(keV*protonMassAMU) ; |
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| 129 | |
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| 130 | static G4double a[11][5] = { |
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| 131 | {1.187E+1, 1.343E+1, 1.069E+4, 7.723E+2, 2.153E-2}, |
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| 132 | {7.802E+0, 8.814E+0, 8.303E+3, 7.446E+2, 7.966E-3}, |
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| 133 | {7.294E+0, 8.284E+0, 5.010E+3, 4.544E+2, 8.153E-3}, |
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| 134 | {8.646E+0, 9.800E+0, 7.066E+3, 4.581E+2, 9.383E-3}, |
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| 135 | {1.286E+1, 1.462E+1, 5.625E+3, 2.621E+3, 3.512E-2}, |
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| 136 | {3.229E+1, 3.696E+1, 8.918E+3, 3.244E+3, 1.273E-1}, |
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| 137 | {1.604E+1, 1.825E+1, 6.967E+3, 2.307E+3, 3.775E-2}, |
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| 138 | {8.049E+0, 9.099E+0, 9.257E+3, 3.846E+2, 1.007E-2}, |
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| 139 | {4.015E+0, 4.542E+0, 3.955E+3, 4.847E+2, 7.904E-3}, |
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| 140 | {4.571E+0, 5.173E+0, 4.346E+3, 4.779E+2, 8.572E-3}, |
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| 141 | {2.631E+0, 2.601E+0, 1.701E+3, 1.279E+3, 1.638E-2} }; |
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| 142 | |
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| 143 | |
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| 144 | if ( T < 10.0 ) { |
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| 145 | ionloss = a[iMolecula][0] * std::sqrt(T) ; |
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| 146 | |
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| 147 | } else if ( T < 10000.0 ) { |
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| 148 | G4double slow = a[iMolecula][1] * std::pow(T, 0.45) ; |
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| 149 | G4double shigh = std::log( 1.0 + a[iMolecula][3]/T |
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| 150 | + a[iMolecula][4]*T ) * a[iMolecula][2]/T ; |
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| 151 | ionloss = slow*shigh / (slow + shigh) ; |
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| 152 | } |
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| 153 | |
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| 154 | if ( ionloss < 0.0) ionloss = 0.0 ; |
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| 155 | ///////////////////////////////////////////////////////////////// |
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| 156 | // Graphite may be implemented in a very approximate way (scaling |
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| 157 | // amorphous results according to rough fits to ICRU tables of results: |
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| 158 | // 1-100 keV: *(1+0.023+0.0066*std::log10(E)) |
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| 159 | // 100-700 keV: *(1+0.089-0.0248*std::log10(E-99.)) |
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| 160 | // 700-10000 keV: *(1+0.089-0.0248*std::log10(700.-99.)) |
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| 161 | // continuity is (should!) be garanteed, but not continuity of the |
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| 162 | // first derivative. A better fit is in order! |
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| 163 | if ( 10 == iMolecula ) { |
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| 164 | if (T < 100.0) { |
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| 165 | ionloss *= (1.0+0.023+0.0066*std::log10(T)); |
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| 166 | } |
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| 167 | else if (T < 700.0) { |
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| 168 | ionloss *=(1.0+0.089-0.0248*std::log10(T-99.)); |
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| 169 | } |
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| 170 | else if (T < 10000.0) { |
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| 171 | ionloss *=(1.0+0.089-0.0248*std::log10(700.-99.)); |
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| 172 | } |
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| 173 | } |
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| 174 | } |
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| 175 | |
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| 176 | return ionloss; |
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| 177 | } |
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| 178 | |
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| 179 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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| 180 | |
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| 181 | G4double G4hICRU49p::ElectronicStoppingPower(G4double z, |
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| 182 | G4double kineticEnergy) const |
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| 183 | { |
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| 184 | G4double ionloss ; |
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| 185 | G4int i = G4int(z)-1 ; // index of atom |
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| 186 | if(i < 0) i = 0 ; |
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| 187 | if(i > 91) i = 91 ; |
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| 188 | |
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| 189 | // The data and the fit from: |
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| 190 | // ICRU Report 49, 1993. Ziegler's type of parametrisations. |
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| 191 | // Proton kinetic energy for parametrisation (keV/amu) |
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| 192 | |
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| 193 | G4double T = kineticEnergy/(keV*protonMassAMU) ; |
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| 194 | |
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| 195 | static G4double a[92][5] = { |
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| 196 | {1.254E+0, 1.440E+0, 2.426E+2, 1.200E+4, 1.159E-1}, |
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| 197 | {1.229E+0, 1.397E+0, 4.845E+2, 5.873E+3, 5.225E-2}, |
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| 198 | {1.411E+0, 1.600E+0, 7.256E+2, 3.013E+3, 4.578E-2}, |
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| 199 | {2.248E+0, 2.590E+0, 9.660E+2, 1.538E+2, 3.475E-2}, |
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| 200 | {2.474E+0, 2.815E+0, 1.206E+3, 1.060E+3, 2.855E-2}, |
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| 201 | {2.631E+0, 2.601E+0, 1.701E+3, 1.279E+3, 1.638E-2}, |
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| 202 | {2.954E+0, 3.350E+0, 1.683E+3, 1.900E+3, 2.513E-2}, |
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| 203 | {2.652E+0, 3.000E+0, 1.920E+3, 2.000E+3, 2.230E-2}, |
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| 204 | {2.085E+0, 2.352E+0, 2.157E+3, 2.634E+3, 1.816E-2}, |
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| 205 | {1.951E+0, 2.199E+0, 2.393E+3, 2.699E+3, 1.568E-2}, |
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| 206 | {2.542E+0, 2.869E+0, 2.628E+3, 1.854E+3, 1.472E-2}, |
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| 207 | {3.791E+0, 4.293E+0, 2.862E+3, 1.009E+3, 1.397E-2}, |
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| 208 | {4.154E+0, 4.739E+0, 2.766E+3, 1.645E+2, 2.023E-2}, |
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| 209 | {4.914E+0, 5.598E+0, 3.193E+3, 2.327E+2, 1.419E-2}, |
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| 210 | {3.232E+0, 3.647E+0, 3.561E+3, 1.560E+3, 1.267E-2}, |
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| 211 | {3.447E+0, 3.891E+0, 3.792E+3, 1.219E+3, 1.211E-2}, |
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| 212 | {5.301E+0, 6.008E+0, 3.969E+3, 6.451E+2, 1.183E-2}, |
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| 213 | {5.731E+0, 6.500E+0, 4.253E+3, 5.300E+2, 1.123E-2}, |
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| 214 | {5.152E+0, 5.833E+0, 4.482E+3, 5.457E+2, 1.129E-2}, |
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| 215 | {5.521E+0, 6.252E+0, 4.710E+3, 5.533E+2, 1.112E-2}, |
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| 216 | {5.201E+0, 5.884E+0, 4.938E+3, 5.609E+2, 9.995E-3}, |
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| 217 | {4.858E+0, 5.489E+0, 5.260E+3, 6.511E+2, 8.930E-3}, |
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| 218 | {4.479E+0, 5.055E+0, 5.391E+3, 9.523E+2, 9.117E-3}, |
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| 219 | {3.983E+0, 4.489E+0, 5.616E+3, 1.336E+3, 8.413E-3}, |
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| 220 | {3.469E+0, 3.907E+0, 5.725E+3, 1.461E+3, 8.829E-3}, |
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| 221 | {3.519E+0, 3.963E+0, 6.065E+3, 1.243E+3, 7.782E-3}, |
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| 222 | {3.140E+0, 3.535E+0, 6.288E+3, 1.372E+3, 7.361E-3}, |
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| 223 | {3.553E+0, 4.004E+0, 6.205E+3, 5.551E+2, 8.763E-3}, |
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| 224 | {3.696E+0, 4.194E+0, 4.649E+3, 8.113E+1, 2.242E-2}, |
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| 225 | {4.210E+0, 4.750E+0, 6.953E+3, 2.952E+2, 6.809E-3}, |
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| 226 | {5.041E+0, 5.697E+0, 7.173E+3, 2.026E+2, 6.725E-3}, |
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| 227 | {5.554E+0, 6.300E+0, 6.496E+3, 1.100E+2, 9.689E-3}, |
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| 228 | {5.323E+0, 6.012E+0, 7.611E+3, 2.925E+2, 6.447E-3}, |
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| 229 | {5.874E+0, 6.656E+0, 7.395E+3, 1.175E+2, 7.684E-3}, |
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| 230 | {6.658E+0, 7.536E+0, 7.694E+3, 2.223E+2, 6.509E-3}, |
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| 231 | {6.413E+0, 7.240E+0, 1.185E+4, 1.537E+2, 2.880E-3}, |
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| 232 | {5.694E+0, 6.429E+0, 8.478E+3, 2.929E+2, 6.087E-3}, |
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| 233 | {6.339E+0, 7.159E+0, 8.693E+3, 3.303E+2, 6.003E-3}, |
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| 234 | {6.407E+0, 7.234E+0, 8.907E+3, 3.678E+2, 5.889E-3}, |
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| 235 | {6.734E+0, 7.603E+0, 9.120E+3, 4.052E+2, 5.765E-3}, |
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| 236 | {6.901E+0, 7.791E+0, 9.333E+3, 4.427E+2, 5.587E-3}, |
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| 237 | {6.424E+0, 7.248E+0, 9.545E+3, 4.802E+2, 5.376E-3}, |
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| 238 | {6.799E+0, 7.671E+0, 9.756E+3, 5.176E+2, 5.315E-3}, |
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| 239 | {6.109E+0, 6.887E+0, 9.966E+3, 5.551E+2, 5.151E-3}, |
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| 240 | {5.924E+0, 6.677E+0, 1.018E+4, 5.925E+2, 4.919E-3}, |
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| 241 | {5.238E+0, 5.900E+0, 1.038E+4, 6.300E+2, 4.758E-3}, |
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| 242 | {5.345E+0, 6.038E+0, 6.790E+3, 3.978E+2, 1.676E-2}, |
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| 243 | {5.814E+0, 6.554E+0, 1.080E+4, 3.555E+2, 4.626E-3}, |
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| 244 | {6.229E+0, 7.024E+0, 1.101E+4, 3.709E+2, 4.540E-3}, |
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| 245 | {6.409E+0, 7.227E+0, 1.121E+4, 3.864E+2, 4.474E-3}, |
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| 246 | {7.500E+0, 8.480E+0, 8.608E+3, 3.480E+2, 9.074E-3}, |
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| 247 | {6.979E+0, 7.871E+0, 1.162E+4, 3.924E+2, 4.402E-3}, |
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| 248 | {7.725E+0, 8.716E+0, 1.183E+4, 3.948E+2, 4.376E-3}, |
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| 249 | {8.337E+0, 9.425E+0, 1.051E+4, 2.696E+2, 6.206E-3}, |
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| 250 | {7.287E+0, 8.218E+0, 1.223E+4, 3.997E+2, 4.447E-3}, |
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| 251 | {7.899E+0, 8.911E+0, 1.243E+4, 4.021E+2, 4.511E-3}, |
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| 252 | {8.041E+0, 9.071E+0, 1.263E+4, 4.045E+2, 4.540E-3}, |
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| 253 | {7.488E+0, 8.444E+0, 1.283E+4, 4.069E+2, 4.420E-3}, |
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| 254 | {7.291E+0, 8.219E+0, 1.303E+4, 4.093E+2, 4.298E-3}, |
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| 255 | {7.098E+0, 8.000E+0, 1.323E+4, 4.118E+2, 4.182E-3}, |
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| 256 | {6.909E+0, 7.786E+0, 1.343E+4, 4.142E+2, 4.058E-3}, |
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| 257 | {6.728E+0, 7.580E+0, 1.362E+4, 4.166E+2, 3.976E-3}, |
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| 258 | {6.551E+0, 7.380E+0, 1.382E+4, 4.190E+2, 3.877E-3}, |
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| 259 | {6.739E+0, 7.592E+0, 1.402E+4, 4.214E+2, 3.863E-3}, |
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| 260 | {6.212E+0, 6.996E+0, 1.421E+4, 4.239E+2, 3.725E-3}, |
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| 261 | {5.517E+0, 6.210E+0, 1.440E+4, 4.263E+2, 3.632E-3}, |
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| 262 | {5.220E+0, 5.874E+0, 1.460E+4, 4.287E+2, 3.498E-3}, |
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| 263 | {5.071E+0, 5.706E+0, 1.479E+4, 4.330E+2, 3.405E-3}, |
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| 264 | {4.926E+0, 5.542E+0, 1.498E+4, 4.335E+2, 3.342E-3}, |
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| 265 | {4.788E+0, 5.386E+0, 1.517E+4, 4.359E+2, 3.292E-3}, |
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| 266 | {4.893E+0, 5.505E+0, 1.536E+4, 4.384E+2, 3.243E-3}, |
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| 267 | {5.028E+0, 5.657E+0, 1.555E+4, 4.408E+2, 3.195E-3}, |
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| 268 | {4.738E+0, 5.329E+0, 1.574E+4, 4.432E+2, 3.186E-3}, |
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| 269 | {4.587E+0, 5.160E+0, 1.541E+4, 4.153E+2, 3.406E-3}, |
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| 270 | {5.201E+0, 5.851E+0, 1.612E+4, 4.416E+2, 3.122E-3}, |
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| 271 | {5.071E+0, 5.704E+0, 1.630E+4, 4.409E+2, 3.082E-3}, |
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| 272 | {4.946E+0, 5.563E+0, 1.649E+4, 4.401E+2, 2.965E-3}, |
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| 273 | {4.477E+0, 5.034E+0, 1.667E+4, 4.393E+2, 2.871E-3}, |
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| 274 | {4.844E+0, 5.458E+0, 7.852E+3, 9.758E+2, 2.077E-2}, |
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| 275 | {4.307E+0, 4.843E+0, 1.704E+4, 4.878E+2, 2.882E-3}, |
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| 276 | {4.723E+0, 5.311E+0, 1.722E+4, 5.370E+2, 2.913E-3}, |
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| 277 | {5.319E+0, 5.982E+0, 1.740E+4, 5.863E+2, 2.871E-3}, |
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| 278 | {5.956E+0, 6.700E+0, 1.780E+4, 6.770E+2, 2.660E-3}, |
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| 279 | {6.158E+0, 6.928E+0, 1.777E+4, 5.863E+2, 2.812E-3}, |
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| 280 | {6.203E+0, 6.979E+0, 1.795E+4, 5.863E+2, 2.776E-3}, |
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| 281 | {6.181E+0, 6.954E+0, 1.812E+4, 5.863E+2, 2.748E-3}, |
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| 282 | {6.949E+0, 7.820E+0, 1.830E+4, 5.863E+2, 2.737E-3}, |
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| 283 | {7.506E+0, 8.448E+0, 1.848E+4, 5.863E+2, 2.727E-3}, |
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| 284 | {7.648E+0, 8.609E+0, 1.866E+4, 5.863E+2, 2.697E-3}, |
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| 285 | {7.711E+0, 8.679E+0, 1.883E+4, 5.863E+2, 2.641E-3}, |
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| 286 | {7.407E+0, 8.336E+0, 1.901E+4, 5.863E+2, 2.603E-3}, |
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| 287 | {7.290E+0, 8.204E+0, 1.918E+4, 5.863E+2, 2.673E-3} |
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| 288 | }; |
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| 289 | |
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| 290 | G4double fac = 1.0 ; |
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| 291 | |
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| 292 | // Carbon specific case for E < 40 keV |
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| 293 | if ( T < 40.0 && 5 == i) { |
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| 294 | fac = std::sqrt(T/40.0) ; |
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| 295 | T = 40.0 ; |
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| 296 | |
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| 297 | // Free electron gas model |
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| 298 | } else if ( T < 10.0 ) { |
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| 299 | fac = std::sqrt(T*0.1) ; |
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| 300 | T =10.0 ; |
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| 301 | } |
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| 302 | |
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| 303 | // Main parametrisation |
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| 304 | G4double slow = a[i][1] * std::pow(T, 0.45) ; |
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| 305 | G4double shigh = std::log( 1.0 + a[i][3]/T + a[i][4]*T ) * a[i][2]/T ; |
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| 306 | ionloss = slow*shigh*fac / (slow + shigh) ; |
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| 307 | |
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| 308 | if ( ionloss < 0.0) ionloss = 0.0 ; |
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| 309 | |
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| 310 | return ionloss; |
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| 311 | } |
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| 312 | |
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| 313 | |
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| 314 | |
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