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 | // $Id: G4eIonisationSpectrum.hh,v 1.7 2006/06/29 19:37:40 gunter Exp $ |
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27 | // GEANT4 tag $Name: geant4-09-03 $ |
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28 | // |
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29 | // ------------------------------------------------------------------- |
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30 | // |
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31 | // GEANT4 Class file |
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32 | // |
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33 | // |
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34 | // File name: G4eIonisationSpectrum |
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35 | // |
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36 | // Author: V.Ivanchenko (Vladimir.Ivantchenko@cern.ch) |
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37 | // |
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38 | // Creation date: 27 September 2001 |
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39 | // |
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40 | // Modifications: |
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41 | // 10.10.01 MGP Revision to improve code quality and |
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42 | // consistency with design |
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43 | // 29.11.01 V.Ivanchenko Parametrisation is updated |
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44 | // 30.05.02 VI Add inline functions |
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45 | // |
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46 | // ------------------------------------------------------------------- |
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47 | |
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48 | // Class Description: |
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49 | // Provides various integration over delta-electron spectrum for e- |
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50 | // ionisation process. Spectrum is parametrised accourding to |
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51 | // EEDL database, details are described in the Physics Reference Manual |
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52 | // Further documentation available from http://www.ge.infn.it/geant4/lowE |
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53 | |
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54 | // ------------------------------------------------------------------- |
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55 | |
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56 | #ifndef G4EIONISATIONSPECTRUM_HH |
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57 | #define G4EIONISATIONSPECTRUM_HH 1 |
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58 | |
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59 | #include "G4VEnergySpectrum.hh" |
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60 | #include "G4eIonisationParameters.hh" |
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61 | |
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62 | //class G4eIonisationParameters; |
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63 | class G4DataVector; |
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64 | |
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65 | class G4eIonisationSpectrum : public G4VEnergySpectrum |
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66 | { |
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67 | |
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68 | public: |
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69 | |
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70 | G4eIonisationSpectrum(); |
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71 | |
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72 | ~G4eIonisationSpectrum(); |
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73 | |
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74 | G4double Probability(G4int Z, G4double tMin, G4double tMax, |
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75 | G4double kineticEnergy, G4int shell, |
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76 | const G4ParticleDefinition* pd=0) const; |
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77 | |
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78 | G4double AverageEnergy(G4int Z, G4double tMin, G4double tMax, |
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79 | G4double kineticEnergy, G4int shell, |
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80 | const G4ParticleDefinition* pd=0) const; |
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81 | |
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82 | G4double SampleEnergy(G4int Z, G4double tMin, G4double tMax, |
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83 | G4double kineticEnergy, G4int shell, |
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84 | const G4ParticleDefinition* pd=0) const; |
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85 | |
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86 | G4double MaxEnergyOfSecondaries(G4double kineticEnergy, |
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87 | G4int Z = 0, |
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88 | const G4ParticleDefinition* pd=0) const; |
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89 | |
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90 | G4double Excitation(G4int Z, G4double e) const; |
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91 | |
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92 | void PrintData() const; |
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93 | |
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94 | protected: |
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95 | |
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96 | private: |
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97 | |
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98 | G4double IntSpectrum(G4double xMin, G4double xMax, |
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99 | const G4DataVector& p) const; |
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100 | |
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101 | G4double AverageValue(G4double xMin, G4double xMax, |
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102 | const G4DataVector& p) const; |
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103 | |
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104 | G4double Function(G4double x, const G4DataVector& p) const; |
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105 | |
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106 | // Hide copy constructor and assignment operator |
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107 | G4eIonisationSpectrum(const G4eIonisationSpectrum&); |
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108 | G4eIonisationSpectrum & operator = (const G4eIonisationSpectrum &right); |
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109 | |
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110 | private: |
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111 | |
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112 | G4eIonisationParameters* theParam; |
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113 | G4double lowestE; |
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114 | G4double factor; |
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115 | G4int iMax; |
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116 | G4int verbose; |
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117 | }; |
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118 | |
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119 | |
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120 | inline G4double G4eIonisationSpectrum::Function(G4double x, |
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121 | const G4DataVector& p) const |
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122 | { |
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123 | G4double f = 1.0 - p[0] - p[iMax]*x |
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124 | + x*x*(1.0 - p[iMax] + (1.0/(1.0 - x) - p[iMax])/(1.0 - x)) |
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125 | + 0.5*p[0]/x; |
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126 | |
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127 | return f; |
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128 | } |
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129 | |
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130 | inline G4double G4eIonisationSpectrum::Excitation(G4int Z, G4double e) const |
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131 | { |
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132 | return theParam->Excitation(Z, e); |
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133 | } |
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134 | |
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135 | |
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136 | #endif |
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