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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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: G4LowEnergyPolarizedCompton.hh,v 1.10 2008/05/02 13:04:41 flongo Exp $ |
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28 | // GEANT4 tag $Name: geant4-09-03 $ |
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29 | // |
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30 | // ------------------------------------------------------------ |
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31 | // GEANT 4 class header file |
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32 | // CERN Geneva Switzerland |
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33 | // |
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34 | |
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35 | // --------- G4LowEnergyPolarizedCompton class ----- |
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36 | // |
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37 | // by G.Depaola & F.Longo (21 may 2001) |
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38 | // 24 May 2001 - MGP Modified to inherit from G4VDiscreteProcess |
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39 | // 25 May 2001 - MGP Added protections to avoid crashes |
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40 | // |
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41 | // 17 October 2001 - F.Longo Major revision according to design iteration |
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42 | // |
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43 | // 21 February 2002 - F.Longo Revisions with A.Zoglauer and G.Depaola |
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44 | // - better description of parallelism |
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45 | // - system of ref change method improved |
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46 | // |
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47 | // |
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48 | // Class description: |
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49 | // Low Energy electromagnetic process, Polarised Compton scattering |
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50 | // Further documentation available from http://www.ge.infn.it/geant4/lowE |
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51 | |
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52 | // ------------------------------------------------------------ |
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53 | |
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54 | #ifndef G4LOWENERGYPOLARIZEDCOMPTON_H |
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55 | #define G4LOWENERGYPOLARIZEDCOMPTON_H 1 |
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56 | |
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57 | #include "globals.hh" |
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58 | #include "G4VDiscreteProcess.hh" |
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59 | |
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60 | // Doppler Broadening |
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61 | |
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62 | #include "G4ShellData.hh" |
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63 | #include "G4DopplerProfile.hh" |
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64 | |
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65 | |
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66 | class G4Track; |
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67 | class G4Step; |
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68 | class G4ParticleDefinition; |
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69 | class G4VParticleChange; |
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70 | class G4VEMDataSet; |
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71 | class G4VCrossSectionHandler; |
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72 | class G4VRangeTest; |
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73 | |
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74 | class G4LowEnergyPolarizedCompton : public G4VDiscreteProcess |
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75 | { |
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76 | public: |
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77 | |
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78 | G4LowEnergyPolarizedCompton(const G4String& processName = "polarLowEnCompt"); |
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79 | |
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80 | ~G4LowEnergyPolarizedCompton(); |
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81 | |
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82 | G4bool IsApplicable(const G4ParticleDefinition& definition); |
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83 | |
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84 | void BuildPhysicsTable(const G4ParticleDefinition& photon); |
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85 | G4VParticleChange* PostStepDoIt(const G4Track& aTrack, const G4Step& aStep); |
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86 | |
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87 | |
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88 | // For testing purpose only |
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89 | G4double DumpMeanFreePath(const G4Track& aTrack, |
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90 | G4double previousStepSize, |
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91 | G4ForceCondition* condition) |
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92 | { return GetMeanFreePath(aTrack, previousStepSize, condition); } |
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93 | |
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94 | |
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95 | protected: |
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96 | |
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97 | G4double GetMeanFreePath(const G4Track& aTrack, |
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98 | G4double previousStepSize, |
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99 | G4ForceCondition* condition); |
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100 | private: |
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101 | |
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102 | // Hide copy constructor and assignment operator as private |
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103 | |
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104 | G4LowEnergyPolarizedCompton& operator=(const G4LowEnergyPolarizedCompton& |
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105 | right); |
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106 | G4LowEnergyPolarizedCompton(const G4LowEnergyPolarizedCompton& ); |
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107 | |
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108 | G4double lowEnergyLimit; // low energy limit applied to the process |
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109 | G4double highEnergyLimit; // high energy limit applied to the process |
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110 | |
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111 | G4VEMDataSet* meanFreePathTable; |
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112 | G4VEMDataSet* scatterFunctionData; |
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113 | |
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114 | G4VCrossSectionHandler* crossSectionHandler; |
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115 | G4VRangeTest* rangeTest; |
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116 | |
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117 | const G4double intrinsicLowEnergyLimit; // intrinsic validity range |
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118 | const G4double intrinsicHighEnergyLimit; |
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119 | |
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120 | // specific methods for polarization |
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121 | |
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122 | G4ThreeVector GetRandomPolarization(G4ThreeVector& direction0); // Random Polarization |
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123 | G4ThreeVector GetPerpendicularPolarization(const G4ThreeVector& direction0, const G4ThreeVector& polarization0) const; |
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124 | |
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125 | G4ThreeVector SetPerpendicularVector(G4ThreeVector& a); // temporary |
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126 | G4ThreeVector SetNewPolarization(G4double epsilon, G4double sinSqrTheta, |
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127 | G4double phi, G4double cosTheta); |
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128 | G4double SetPhi(G4double, G4double); |
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129 | |
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130 | void SystemOfRefChange(G4ThreeVector& direction0, G4ThreeVector& direction1, |
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131 | G4ThreeVector& polarization0, G4ThreeVector& polarization1); |
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132 | |
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133 | // Doppler Broadening |
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134 | |
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135 | G4ShellData shellData; |
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136 | G4DopplerProfile profileData; |
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137 | |
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138 | |
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139 | }; |
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140 | |
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141 | #endif |
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142 | |
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143 | |
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144 | |
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145 | |
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146 | |
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147 | |
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148 | |
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149 | |
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150 | |
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