| 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: G4IonisParamElm.cc,v 1.15 2008/06/03 14:30:10 vnivanch Exp $ |
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| 28 | // GEANT4 tag $Name: materials-V09-02-18 $ |
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| 29 | // |
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| 30 | // |
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| 31 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... ....oooOO0OOooo.... |
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| 32 | // |
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| 33 | // 06-09-04, Update calculated values after any change of ionisation |
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| 34 | // potential change. V.Ivanchenko |
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| 35 | // 17-10-02, Fix excitation energy interpolation. V.Ivanchenko |
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| 36 | // 08-03-01, correct handling of fShellCorrectionVector. M.Maire |
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| 37 | // 22-11-00, tabulation of ionisation potential from |
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| 38 | // the ICRU Report N#37. V.Ivanchenko |
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| 39 | // 09-07-98, data moved from G4Element. M.Maire |
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| 40 | // |
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| 41 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... ....oooOO0OOooo.... |
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| 42 | |
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| 43 | #include "G4IonisParamElm.hh" |
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| 44 | |
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| 45 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... ....oooOO0OOooo.... |
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| 46 | |
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| 47 | G4IonisParamElm::G4IonisParamElm(G4double Z) |
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| 48 | { |
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| 49 | if (Z < 1.) |
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| 50 | G4Exception (" ERROR! It is not allowed to create an Element with Z < 1" ); |
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| 51 | |
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| 52 | // some basic functions of the atomic number |
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| 53 | fZ = Z; |
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| 54 | fZ3 = std::pow(fZ, 1./3.); |
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| 55 | fZZ3 = std::pow(fZ*(fZ+1.), 1./3.); |
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| 56 | flogZ3 = std::log(fZ)/3.; |
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| 57 | |
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| 58 | // Parameters for energy loss by ionisation |
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| 59 | |
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| 60 | // Mean excitation energy |
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| 61 | // from "Stopping Powers for Electrons and Positrons" |
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| 62 | // ICRU Report N#37, 1984 (energy in eV) |
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| 63 | static double exc[100] = { |
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| 64 | 21.8, 20.9, 13.3, 15.9, 15.2, 13.0, 11.7, 11.9, 11.5, 13.7, |
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| 65 | 13.6, 13.0, 12.8, 12.4, 11.5, 11.3, 10.2, 10.4, 10.0, 9.6, |
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| 66 | 10.3, 10.6, 10.7, 10.7, 10.9, 11.0, 11.0, 11.1, 11.1, 11.0, |
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| 67 | 10.8, 10.4, 10.5, 10.2, 9.8, 9.8, 9.8, 9.6, 9.7, 9.8, |
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| 68 | 10.2, 10.1, 10.0, 10.0, 10.0, 10.2, 10.0, 9.8, 10.0, 9.8, |
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| 69 | 9.5, 9.3, 9.3, 8.9, 8.9, 8.8, 8.8, 8.8, 9.1, 9.1, |
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| 70 | 9.2, 9.3, 9.2, 9.2, 9.4, 9.5, 9.7, 9.7, 9.8, 9.8, |
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| 71 | 9.8, 9.8, 9.8, 9.8, 9.8, 9.8, 9.8, 10.1, 10.0, 10.0, |
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| 72 | 10.0, 10.0, 9.9, 9.9, 9.7, 9.2, 9.5, 9.4, 9.4, 9.4, |
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| 73 | 9.6, 9.7, 9.7, 9.8, 9.8, 9.8, 9.8, 9.9, 9.9, 9.9 }; |
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| 74 | |
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| 75 | G4int iz = (G4int)Z - 1 ; |
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| 76 | if(0 > iz) iz = 0; |
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| 77 | else if(99 < iz) iz = 99 ; |
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| 78 | fMeanExcitationEnergy = fZ * exc[iz] * eV ; |
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| 79 | |
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| 80 | // compute parameters for ion transport |
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| 81 | // The aproximation from: |
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| 82 | // J.F.Ziegler, J.P. Biersack, U. Littmark |
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| 83 | // The Stopping and Range of Ions in Matter, |
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| 84 | // Vol.1, Pergamon Press, 1985 |
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| 85 | // Fast ions or hadrons |
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| 86 | |
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| 87 | if(91 < iz) iz = 91; |
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| 88 | |
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| 89 | static G4double vFermi[92] = { |
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| 90 | 1.0309, 0.15976, 0.59782, 1.0781, 1.0486, 1.0, 1.058, 0.93942, 0.74562, 0.3424, |
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| 91 | 0.45259, 0.71074, 0.90519, 0.97411, 0.97184, 0.89852, 0.70827, 0.39816, 0.36552, 0.62712, |
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| 92 | 0.81707, 0.9943, 1.1423, 1.2381, 1.1222, 0.92705, 1.0047, 1.2, 1.0661, 0.97411, |
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| 93 | 0.84912, 0.95, 1.0903, 1.0429, 0.49715, 0.37755, 0.35211, 0.57801, 0.77773, 1.0207, |
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| 94 | 1.029, 1.2542, 1.122, 1.1241, 1.0882, 1.2709, 1.2542, 0.90094, 0.74093, 0.86054, |
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| 95 | 0.93155, 1.0047, 0.55379, 0.43289, 0.32636, 0.5131, 0.695, 0.72591, 0.71202, 0.67413, |
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| 96 | 0.71418, 0.71453, 0.5911, 0.70263, 0.68049, 0.68203, 0.68121, 0.68532, 0.68715, 0.61884, |
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| 97 | 0.71801, 0.83048, 1.1222, 1.2381, 1.045, 1.0733, 1.0953, 1.2381, 1.2879, 0.78654, |
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| 98 | 0.66401, 0.84912, 0.88433, 0.80746, 0.43357, 0.41923, 0.43638, 0.51464, 0.73087, 0.81065, |
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| 99 | 1.9578, 1.0257} ; |
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| 100 | |
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| 101 | static G4double lFactor[92] = { |
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| 102 | 1.0, 1.0, 1.1, 1.06, 1.01, 1.03, 1.04, 0.99, 0.95, 0.9, |
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| 103 | 0.82, 0.81, 0.83, 0.88, 1.0, 0.95, 0.97, 0.99, 0.98, 0.97, |
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| 104 | 0.98, 0.97, 0.96, 0.93, 0.91, 0.9, 0.88, 0.9, 0.9, 0.9, |
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| 105 | 0.9, 0.85, 0.9, 0.9, 0.91, 0.92, 0.9, 0.9, 0.9, 0.9, |
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| 106 | 0.9, 0.88, 0.9, 0.88, 0.88, 0.9, 0.9, 0.88, 0.9, 0.9, |
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| 107 | 0.9, 0.9, 0.96, 1.2, 0.9, 0.88, 0.88, 0.85, 0.9, 0.9, |
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| 108 | 0.92, 0.95, 0.99, 1.03, 1.05, 1.07, 1.08, 1.1, 1.08, 1.08, |
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| 109 | 1.08, 1.08, 1.09, 1.09, 1.1, 1.11, 1.12, 1.13, 1.14, 1.15, |
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| 110 | 1.17, 1.2, 1.18, 1.17, 1.17, 1.16, 1.16, 1.16, 1.16, 1.16, |
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| 111 | 1.16, 1.16} ; |
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| 112 | |
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| 113 | fVFermi = vFermi[iz]; |
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| 114 | fLFactor = lFactor[iz]; |
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| 115 | |
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| 116 | // obsolete parameters for ionisation |
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| 117 | fTau0 = 0.1*fZ3*MeV/proton_mass_c2; |
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| 118 | fTaul = 2.*MeV/proton_mass_c2; |
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| 119 | |
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| 120 | // compute the Bethe-Bloch formula for energy = fTaul*particle mass |
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| 121 | G4double rate = fMeanExcitationEnergy/electron_mass_c2 ; |
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| 122 | G4double w = fTaul*(fTaul+2.) ; |
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| 123 | fBetheBlochLow = (fTaul+1.)*(fTaul+1.)*std::log(2.*w/rate)/w - 1. ; |
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| 124 | fBetheBlochLow = 2.*fZ*twopi_mc2_rcl2*fBetheBlochLow ; |
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| 125 | |
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| 126 | fClow = std::sqrt(fTaul)*fBetheBlochLow; |
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| 127 | fAlow = 6.458040 * fClow/fTau0; |
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| 128 | G4double Taum = 0.035*fZ3*MeV/proton_mass_c2; |
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| 129 | fBlow =-3.229020*fClow/(fTau0*std::sqrt(Taum)); |
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| 130 | |
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| 131 | // Shell correction parameterization |
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| 132 | fShellCorrectionVector = new G4double[3]; //[3] |
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| 133 | rate = 0.001*fMeanExcitationEnergy/eV; |
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| 134 | G4double rate2 = rate*rate; |
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| 135 | /* |
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| 136 | fShellCorrectionVector[0] = ( 1.10289e5 + 5.14781e8*rate)*rate2 ; |
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| 137 | fShellCorrectionVector[1] = ( 7.93805e3 - 2.22565e7*rate)*rate2 ; |
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| 138 | fShellCorrectionVector[2] = (-9.92256e1 + 2.10823e5*rate)*rate2 ; |
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| 139 | */ |
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| 140 | fShellCorrectionVector[0] = ( 0.422377 + 3.858019*rate)*rate2 ; |
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| 141 | fShellCorrectionVector[1] = ( 0.0304043 - 0.1667989*rate)*rate2 ; |
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| 142 | fShellCorrectionVector[2] = (-0.00038106 + 0.00157955*rate)*rate2 ; |
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| 143 | } |
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| 144 | |
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| 145 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... ....oooOO0OOooo.... |
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| 146 | |
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| 147 | // Fake default constructor - sets only member data and allocates memory |
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| 148 | // for usage restricted to object persistency |
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| 149 | |
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| 150 | G4IonisParamElm::G4IonisParamElm(__void__&) |
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| 151 | : fShellCorrectionVector(0) |
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| 152 | { |
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| 153 | } |
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| 154 | |
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| 155 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... ....oooOO0OOooo.... |
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| 156 | |
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| 157 | G4IonisParamElm::~G4IonisParamElm() |
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| 158 | { |
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| 159 | if (fShellCorrectionVector) delete [] fShellCorrectionVector; |
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| 160 | } |
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| 161 | |
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| 162 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... ....oooOO0OOooo.... |
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| 163 | |
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| 164 | G4IonisParamElm::G4IonisParamElm(G4IonisParamElm& right) |
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| 165 | { |
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| 166 | *this = right; |
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| 167 | } |
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| 168 | |
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| 169 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... ....oooOO0OOooo.... |
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| 170 | |
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| 171 | const G4IonisParamElm& G4IonisParamElm::operator=(const G4IonisParamElm& right) |
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| 172 | { |
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| 173 | if (this != &right) |
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| 174 | { |
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| 175 | fZ = right.fZ; |
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| 176 | fZ3 = right.fZ3; |
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| 177 | fZZ3 = right.fZZ3; |
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| 178 | flogZ3 = right.flogZ3; |
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| 179 | fTau0 = right.fTau0; |
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| 180 | fTaul = right.fTaul; |
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| 181 | fBetheBlochLow = right.fBetheBlochLow; |
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| 182 | fAlow = right.fAlow; |
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| 183 | fBlow = right.fBlow; |
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| 184 | fClow = right.fClow; |
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| 185 | fMeanExcitationEnergy = right.fMeanExcitationEnergy; |
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| 186 | if (fShellCorrectionVector) delete [] fShellCorrectionVector; |
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| 187 | fShellCorrectionVector = new G4double[3]; |
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| 188 | fShellCorrectionVector[0] = right.fShellCorrectionVector[0]; |
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| 189 | fShellCorrectionVector[1] = right.fShellCorrectionVector[1]; |
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| 190 | fShellCorrectionVector[2] = right.fShellCorrectionVector[2]; |
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| 191 | } |
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| 192 | return *this; |
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| 193 | } |
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| 194 | |
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| 195 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... ....oooOO0OOooo.... |
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| 196 | |
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| 197 | G4int G4IonisParamElm::operator==(const G4IonisParamElm& right) const |
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| 198 | { |
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| 199 | return (this == (G4IonisParamElm *) &right); |
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| 200 | } |
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| 201 | |
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| 202 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... ....oooOO0OOooo.... |
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| 203 | |
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| 204 | G4int G4IonisParamElm::operator!=(const G4IonisParamElm& right) const |
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| 205 | { |
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| 206 | return (this != (G4IonisParamElm *) &right); |
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| 207 | } |
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| 208 | |
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| 209 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... ....oooOO0OOooo.... |
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