[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: G4hICRU49Nuclear |
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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 | // 10/05/2001 V.Ivanchenko Clean up againist Linux compilation with -Wall |
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| 41 | // |
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| 42 | // Class Description: |
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| 43 | // |
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| 44 | // Nuclear stopping power parametrised according to |
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| 45 | // ICRU Report N49, 1993. Moliere model. |
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| 46 | // G.Moliere "Theorie der Streuung schneller geladener Teilchen I; |
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| 47 | // Einzelstreuungam abbgeschirmten Coulomb-Feld" Z. f. Naturforsch, A2, |
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| 48 | // 133 (1947). |
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| 49 | // |
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| 50 | // Class Description: End |
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| 51 | // |
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| 52 | // ------------------------------------------------------------------- |
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| 53 | // |
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| 54 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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| 55 | |
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| 56 | #include "G4hICRU49Nuclear.hh" |
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| 57 | #include "G4UnitsTable.hh" |
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| 58 | #include "globals.hh" |
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| 59 | #include "Randomize.hh" |
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| 60 | |
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| 61 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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| 62 | |
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| 63 | G4hICRU49Nuclear::G4hICRU49Nuclear():G4VhNuclearStoppingPower() |
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| 64 | {;} |
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| 65 | |
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| 66 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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| 67 | |
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| 68 | G4hICRU49Nuclear::~G4hICRU49Nuclear() |
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| 69 | {;} |
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| 70 | |
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| 71 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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| 72 | |
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| 73 | G4double G4hICRU49Nuclear::NuclearStoppingPower(G4double kineticEnergy, |
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| 74 | G4double z1, G4double z2, |
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| 75 | G4double m1, G4double m2) const |
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| 76 | { |
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| 77 | G4double energy = kineticEnergy/keV ; // energy in keV |
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| 78 | G4double ionloss = 0.0; |
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| 79 | |
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| 80 | G4double rm = (m1 + m2) * ( std::pow(z1, .23) + std::pow(z2, .23) ) ; |
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| 81 | |
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| 82 | G4double er = 32.536 * m2 * energy / ( z1 * z2 * rm ) ; // reduced energy |
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| 83 | |
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| 84 | static G4double a[104][2] = { |
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| 85 | { 1.0E+8, 5.831E-8}, |
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| 86 | { 8.0E+7, 7.288E-8}, |
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| 87 | { 6.0E+7, 9.719E-8}, |
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| 88 | { 5.0E+7, 1.166E-7}, |
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| 89 | { 4.0E+7, 1.457E-7}, |
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| 90 | { 3.0E+7, 1.942E-7}, |
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| 91 | { 2.0E+7, 2.916E-7}, |
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| 92 | { 1.5E+7, 3.887E-7}, |
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| 93 | |
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| 94 | { 1.0E+7, 5.833E-7}, |
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| 95 | { 8.0E+6, 7.287E-7}, |
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| 96 | { 6.0E+6, 9.712E-7}, |
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| 97 | { 5.0E+6, 1.166E-6}, |
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| 98 | { 4.0E+6, 1.457E-6}, |
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| 99 | { 3.0E+6, 1.941E-6}, |
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| 100 | { 2.0E+6, 2.911E-6}, |
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| 101 | { 1.5E+6, 3.878E-6}, |
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| 102 | |
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| 103 | { 1.0E+6, 5.810E-6}, |
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| 104 | { 8.0E+5, 7.262E-6}, |
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| 105 | { 6.0E+5, 9.663E-6}, |
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| 106 | { 5.0E+5, 1.157E-5}, |
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| 107 | { 4.0E+5, 1.442E-5}, |
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| 108 | { 3.0E+5, 1.913E-5}, |
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| 109 | { 2.0E+5, 2.845E-5}, |
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| 110 | { 1.5E+5, 3.762E-5}, |
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| 111 | |
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| 112 | { 1.0E+5, 5.554E-5}, |
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| 113 | { 8.0E+4, 6.866E-5}, |
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| 114 | { 6.0E+4, 9.020E-5}, |
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| 115 | { 5.0E+4, 1.070E-4}, |
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| 116 | { 4.0E+4, 1.319E-4}, |
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| 117 | { 3.0E+4, 1.722E-4}, |
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| 118 | { 2.0E+4, 2.499E-4}, |
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| 119 | { 1.5E+4, 3.248E-4}, |
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| 120 | |
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| 121 | { 1.0E+4, 4.688E-4}, |
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| 122 | { 8.0E+3, 5.729E-4}, |
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| 123 | { 6.0E+3, 7.411E-4}, |
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| 124 | { 5.0E+3, 8.718E-4}, |
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| 125 | { 4.0E+3, 1.063E-3}, |
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| 126 | { 3.0E+3, 1.370E-3}, |
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| 127 | { 2.0E+3, 1.955E-3}, |
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| 128 | { 1.5E+3, 2.511E-3}, |
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| 129 | |
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| 130 | { 1.0E+3, 3.563E-3}, |
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| 131 | { 8.0E+2, 4.314E-3}, |
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| 132 | { 6.0E+2, 5.511E-3}, |
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| 133 | { 5.0E+2, 6.430E-3}, |
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| 134 | { 4.0E+2, 7.756E-3}, |
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| 135 | { 3.0E+2, 9.855E-3}, |
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| 136 | { 2.0E+2, 1.375E-2}, |
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| 137 | { 1.5E+2, 1.736E-2}, |
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| 138 | |
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| 139 | { 1.0E+2, 2.395E-2}, |
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| 140 | { 8.0E+1, 2.850E-2}, |
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| 141 | { 6.0E+1, 3.552E-2}, |
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| 142 | { 5.0E+1, 4.073E-2}, |
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| 143 | { 4.0E+1, 4.802E-2}, |
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| 144 | { 3.0E+1, 5.904E-2}, |
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| 145 | { 1.5E+1, 9.426E-2}, |
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| 146 | |
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| 147 | { 1.0E+1, 1.210E-1}, |
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| 148 | { 8.0E+0, 1.377E-1}, |
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| 149 | { 6.0E+0, 1.611E-1}, |
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| 150 | { 5.0E+0, 1.768E-1}, |
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| 151 | { 4.0E+0, 1.968E-1}, |
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| 152 | { 3.0E+0, 2.235E-1}, |
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| 153 | { 2.0E+0, 2.613E-1}, |
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| 154 | { 1.5E+0, 2.871E-1}, |
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| 155 | |
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| 156 | { 1.0E+0, 3.199E-1}, |
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| 157 | { 8.0E-1, 3.354E-1}, |
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| 158 | { 6.0E-1, 3.523E-1}, |
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| 159 | { 5.0E-1, 3.609E-1}, |
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| 160 | { 4.0E-1, 3.693E-1}, |
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| 161 | { 3.0E-1, 3.766E-1}, |
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| 162 | { 2.0E-1, 3.803E-1}, |
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| 163 | { 1.5E-1, 3.788E-1}, |
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| 164 | |
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| 165 | { 1.0E-1, 3.711E-1}, |
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| 166 | { 8.0E-2, 3.644E-1}, |
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| 167 | { 6.0E-2, 3.530E-1}, |
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| 168 | { 5.0E-2, 3.444E-1}, |
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| 169 | { 4.0E-2, 3.323E-1}, |
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| 170 | { 3.0E-2, 3.144E-1}, |
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| 171 | { 2.0E-2, 2.854E-1}, |
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| 172 | { 1.5E-2, 2.629E-1}, |
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| 173 | |
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| 174 | { 1.0E-2, 2.298E-1}, |
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| 175 | { 8.0E-3, 2.115E-1}, |
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| 176 | { 6.0E-3, 1.883E-1}, |
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| 177 | { 5.0E-3, 1.741E-1}, |
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| 178 | { 4.0E-3, 1.574E-1}, |
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| 179 | { 3.0E-3, 1.372E-1}, |
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| 180 | { 2.0E-3, 1.116E-1}, |
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| 181 | { 1.5E-3, 9.559E-2}, |
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| 182 | |
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| 183 | { 1.0E-3, 7.601E-2}, |
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| 184 | { 8.0E-4, 6.668E-2}, |
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| 185 | { 6.0E-4, 5.605E-2}, |
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| 186 | { 5.0E-4, 5.008E-2}, |
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| 187 | { 4.0E-4, 4.352E-2}, |
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| 188 | { 3.0E-4, 3.617E-2}, |
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| 189 | { 2.0E-4, 2.768E-2}, |
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| 190 | { 1.5E-4, 2.279E-2}, |
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| 191 | |
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| 192 | { 1.0E-4, 1.723E-2}, |
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| 193 | { 8.0E-5, 1.473E-2}, |
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| 194 | { 6.0E-5, 1.200E-2}, |
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| 195 | { 5.0E-5, 1.052E-2}, |
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| 196 | { 4.0E-5, 8.950E-3}, |
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| 197 | { 3.0E-5, 7.246E-3}, |
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| 198 | { 2.0E-5, 5.358E-3}, |
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| 199 | { 1.5E-5, 4.313E-3}, |
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| 200 | { 0.0, 3.166E-3} |
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| 201 | }; |
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| 202 | |
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| 203 | for (G4int i=1; i<104; i++) |
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| 204 | { |
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| 205 | if (er > a[i][0]) { |
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| 206 | ionloss = |
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| 207 | (a[i][1]-a[i-1][1])*(er-a[i-1][0])/(a[i][0]-a[i-1][0])+a[i-1][1]; |
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| 208 | break; |
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| 209 | } |
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| 210 | } |
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| 211 | |
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| 212 | // Stragling |
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| 213 | if(lossFlucFlag) { |
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| 214 | G4double sig = 4.0 * m1 * m2 / ((m1 + m2)*(m1 + m2)* |
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| 215 | (4.0 + 0.197*std::pow(er,-1.6991)+6.584*std::pow(er,-1.0494))) ; |
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| 216 | |
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| 217 | ionloss *= G4RandGauss::shoot(1.0,sig) ; |
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| 218 | } |
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| 219 | |
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| 220 | ionloss *= 8.462 * z1 * z2 * m1 / rm ; // Return to [ev/(10^15 atoms/cm^2] |
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| 221 | |
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| 222 | if ( ionloss < 0.0) ionloss = 0.0 ; |
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| 223 | |
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| 224 | return ionloss; |
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| 225 | } |
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| 226 | |
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| 227 | |
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| 228 | |
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| 229 | |
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| 230 | |
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