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: G4DynamicParticle.cc,v 1.30 2010/08/10 15:47:42 kurasige Exp $ |
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28 | // GEANT4 tag $Name: particles-V09-03-15 $ |
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29 | // |
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30 | // |
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31 | // -------------------------------------------------------------- |
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32 | // GEANT 4 class implementation file |
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33 | // |
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34 | // History: first implementation, based on object model of |
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35 | // 2nd December 1995, G.Cosmo |
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36 | // ---------------- G4DynamicParticle ---------------- |
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37 | // first implementation by Makoto Asai, 29 January 1996 |
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38 | // revised by G.Cosmo, 29 February 1996 |
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39 | // revised by H.Kurashige 06 May 1996 |
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40 | // revised by Hisaya Kurashige, 27 July 1996 |
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41 | // modify thePreAssignedDecayProducts |
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42 | // add void SetMomentum(G4ThreeVector &momentum) |
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43 | // add void Set4Momentum(G4LorentzVector &momentum) |
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44 | // add G4DynamicParticle(G4ParticleDefinition * aParticleDefinition, |
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45 | // G4LorentzVector &p4vector) |
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46 | // revised by Hisaya Kurashige, 19 Oct 1996 |
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47 | // add theKillProcess |
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48 | // add ProperTime |
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49 | // revised by Hisaya Kurashige, 26 Mar 1997 |
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50 | // modify destructor |
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51 | // revised by Hisaya Kurashige, 05 June 1997 |
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52 | // modify DumpInfo() |
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53 | // revised by Hisaya Kurashige, 5 June 1998 |
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54 | // remove theKillProcess |
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55 | // revised by Hisaya Kurashige, 5 Mar 2001 |
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56 | // fixed SetDefinition() |
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57 | // revised by V.Ivanchenko, 12 June 2003 |
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58 | // fixed problem of massless particles |
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59 | // revised by V.Ivanchenko, 18 June 2003 |
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60 | // take into account the case of virtual photons |
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61 | // revised by M.Kelsey 12 May 2010 |
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62 | // ensure that all constructors initialize all data members |
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63 | //-------------------------------------------------------------- |
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64 | |
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65 | #include "G4DynamicParticle.hh" |
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66 | #include "G4DecayProducts.hh" |
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67 | #include "G4LorentzVector.hh" |
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68 | #include "G4ParticleDefinition.hh" |
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69 | #include "G4ParticleTable.hh" |
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70 | #include "G4IonTable.hh" |
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71 | |
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72 | G4Allocator<G4DynamicParticle> aDynamicParticleAllocator; |
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73 | |
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74 | static const G4double EnergyMomentumRelationAllowance = keV; |
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75 | |
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76 | //////////////////// |
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77 | G4DynamicParticle::G4DynamicParticle(): |
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78 | theMomentumDirection(0.0,0.0,1.0), |
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79 | theParticleDefinition(0), |
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80 | theKineticEnergy(0.0), |
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81 | theProperTime(0.0), |
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82 | theDynamicalMass(0.0), |
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83 | theDynamicalCharge(0.0), |
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84 | theDynamicalSpin(0.0), |
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85 | theDynamicalMagneticMoment(0.0), |
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86 | theElectronOccupancy(0), |
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87 | thePreAssignedDecayProducts(0), |
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88 | thePreAssignedDecayTime(-1.0), |
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89 | verboseLevel(1), |
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90 | primaryParticle(0), |
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91 | thePDGcode(0) {} |
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92 | |
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93 | //////////////////// |
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94 | // -- constructors ---- |
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95 | //////////////////// |
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96 | G4DynamicParticle::G4DynamicParticle(const G4ParticleDefinition * aParticleDefinition, |
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97 | const G4ThreeVector& aMomentumDirection, |
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98 | G4double aKineticEnergy): |
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99 | theMomentumDirection(aMomentumDirection), |
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100 | theParticleDefinition(aParticleDefinition), |
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101 | theKineticEnergy(aKineticEnergy), |
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102 | theProperTime(0.0), |
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103 | theDynamicalMass(aParticleDefinition->GetPDGMass()), |
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104 | theDynamicalCharge(aParticleDefinition->GetPDGCharge()), |
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105 | theDynamicalSpin(aParticleDefinition->GetPDGSpin()), |
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106 | theDynamicalMagneticMoment(aParticleDefinition->GetPDGMagneticMoment()), |
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107 | theElectronOccupancy(0), |
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108 | thePreAssignedDecayProducts(0), |
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109 | thePreAssignedDecayTime(-1.0), |
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110 | verboseLevel(1), |
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111 | primaryParticle(0), |
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112 | thePDGcode(0) {} |
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113 | |
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114 | //////////////////// |
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115 | G4DynamicParticle::G4DynamicParticle(const G4ParticleDefinition * aParticleDefinition, |
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116 | const G4ThreeVector& aParticleMomentum): |
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117 | theParticleDefinition(aParticleDefinition), |
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118 | theKineticEnergy(0.0), |
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119 | theProperTime(0.0), |
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120 | theDynamicalMass(aParticleDefinition->GetPDGMass()), |
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121 | theDynamicalCharge(aParticleDefinition->GetPDGCharge()), |
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122 | theDynamicalSpin(aParticleDefinition->GetPDGSpin()), |
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123 | theDynamicalMagneticMoment(aParticleDefinition->GetPDGMagneticMoment()), |
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124 | theElectronOccupancy(0), |
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125 | thePreAssignedDecayProducts(0), |
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126 | thePreAssignedDecayTime(-1.0), |
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127 | verboseLevel(1), |
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128 | primaryParticle(0), |
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129 | thePDGcode(0) |
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130 | { |
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131 | // 3-dim momentum is given |
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132 | SetMomentum(aParticleMomentum); |
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133 | } |
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134 | |
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135 | //////////////////// |
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136 | G4DynamicParticle::G4DynamicParticle(const G4ParticleDefinition * aParticleDefinition, |
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137 | const G4LorentzVector &aParticleMomentum): |
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138 | theParticleDefinition(aParticleDefinition), |
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139 | theKineticEnergy(0.0), |
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140 | theProperTime(0.0), |
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141 | theDynamicalMass(aParticleDefinition->GetPDGMass()), |
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142 | theDynamicalCharge(aParticleDefinition->GetPDGCharge()), |
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143 | theDynamicalSpin(aParticleDefinition->GetPDGSpin()), |
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144 | theDynamicalMagneticMoment(aParticleDefinition->GetPDGMagneticMoment()), |
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145 | theElectronOccupancy(0), |
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146 | thePreAssignedDecayProducts(0), |
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147 | thePreAssignedDecayTime(-1.0), |
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148 | verboseLevel(1), |
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149 | primaryParticle(0), |
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150 | thePDGcode(0) |
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151 | { |
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152 | // 4-momentum vector (Lorentz vecotr) is given |
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153 | Set4Momentum(aParticleMomentum); |
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154 | } |
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155 | |
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156 | G4DynamicParticle::G4DynamicParticle(const G4ParticleDefinition * aParticleDefinition, |
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157 | G4double totalEnergy, |
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158 | const G4ThreeVector &aParticleMomentum): |
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159 | theParticleDefinition(aParticleDefinition), |
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160 | theKineticEnergy(0.0), |
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161 | theProperTime(0.0), |
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162 | theDynamicalMass(aParticleDefinition->GetPDGMass()), |
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163 | theDynamicalCharge(aParticleDefinition->GetPDGCharge()), |
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164 | theDynamicalSpin(aParticleDefinition->GetPDGSpin()), |
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165 | theDynamicalMagneticMoment(aParticleDefinition->GetPDGMagneticMoment()), |
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166 | theElectronOccupancy(0), |
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167 | thePreAssignedDecayProducts(0), |
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168 | thePreAssignedDecayTime(-1.0), |
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169 | verboseLevel(1), |
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170 | primaryParticle(0), |
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171 | thePDGcode(0) |
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172 | { |
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173 | // total energy and 3-dim momentum are given |
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174 | G4double pModule2 = aParticleMomentum.mag2(); |
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175 | if (pModule2>0.0) { |
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176 | G4double mass2 = totalEnergy*totalEnergy - pModule2; |
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177 | if(mass2 < EnergyMomentumRelationAllowance*EnergyMomentumRelationAllowance) { |
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178 | theDynamicalMass = 0.; |
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179 | SetMomentumDirection(aParticleMomentum.unit()); |
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180 | SetKineticEnergy(totalEnergy); |
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181 | } else { |
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182 | theDynamicalMass = std::sqrt(mass2); |
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183 | SetMomentum(aParticleMomentum); |
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184 | } |
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185 | } else { |
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186 | SetMomentumDirection(1.0,0.0,0.0); |
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187 | SetKineticEnergy(0.0); |
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188 | } |
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189 | } |
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190 | |
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191 | //////////////////// |
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192 | G4DynamicParticle::G4DynamicParticle(const G4DynamicParticle &right): |
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193 | theMomentumDirection(right.theMomentumDirection), |
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194 | theParticleDefinition(right.theParticleDefinition), |
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195 | thePolarization(right.thePolarization), |
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196 | theKineticEnergy(right.theKineticEnergy), |
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197 | theProperTime(0.0), |
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198 | theDynamicalMass(right.theDynamicalMass), |
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199 | theDynamicalCharge(right.theDynamicalCharge), |
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200 | theDynamicalSpin(right.theDynamicalSpin), |
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201 | theDynamicalMagneticMoment(right.theDynamicalMagneticMoment), |
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202 | theElectronOccupancy(0), |
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203 | thePreAssignedDecayProducts(0), // Do not copy preassignedDecayProducts |
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204 | thePreAssignedDecayTime(-1.0), |
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205 | verboseLevel(right.verboseLevel), |
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206 | primaryParticle(right.primaryParticle), |
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207 | thePDGcode(right.thePDGcode) |
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208 | { |
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209 | if (right.theElectronOccupancy != 0) { |
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210 | theElectronOccupancy = |
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211 | new G4ElectronOccupancy(*right.theElectronOccupancy); |
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212 | } |
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213 | } |
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214 | |
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215 | //////////////////// |
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216 | // -- destructor ---- |
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217 | //////////////////// |
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218 | G4DynamicParticle::~G4DynamicParticle() { |
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219 | |
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220 | // delete thePreAssignedDecayProducts |
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221 | if (thePreAssignedDecayProducts != 0) delete thePreAssignedDecayProducts; |
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222 | thePreAssignedDecayProducts = 0; |
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223 | |
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224 | if (theElectronOccupancy != 0) delete theElectronOccupancy; |
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225 | theElectronOccupancy =0; |
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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 | // -- operators ---- |
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231 | //////////////////// |
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232 | G4DynamicParticle & G4DynamicParticle::operator=(const G4DynamicParticle &right) |
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233 | { |
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234 | if (this != &right) { |
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235 | theMomentumDirection = right.theMomentumDirection; |
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236 | theParticleDefinition = right.theParticleDefinition; |
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237 | thePolarization = right.thePolarization; |
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238 | theKineticEnergy = right.theKineticEnergy; |
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239 | theProperTime = right.theProperTime; |
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240 | |
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241 | theDynamicalMass = right.theDynamicalMass; |
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242 | theDynamicalCharge = right.theDynamicalCharge; |
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243 | theDynamicalSpin = right.theDynamicalSpin; |
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244 | theDynamicalMagneticMoment = right.theDynamicalMagneticMoment; |
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245 | |
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246 | if (theElectronOccupancy != 0) delete theElectronOccupancy; |
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247 | if (right.theElectronOccupancy != 0){ |
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248 | theElectronOccupancy = |
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249 | new G4ElectronOccupancy(*right.theElectronOccupancy); |
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250 | } else { |
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251 | theElectronOccupancy = 0; |
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252 | } |
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253 | |
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254 | // thePreAssignedDecayProducts must not be copied. |
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255 | thePreAssignedDecayProducts = 0; |
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256 | thePreAssignedDecayTime = -1.0; |
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257 | |
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258 | verboseLevel = right.verboseLevel; |
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259 | |
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260 | // Primary particle information must be preserved |
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261 | //*** primaryParticle = right.primaryParticle; |
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262 | |
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263 | thePDGcode = right.thePDGcode; |
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264 | } |
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265 | return *this; |
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266 | } |
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267 | |
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268 | //////////////////// |
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269 | void G4DynamicParticle::SetDefinition(const G4ParticleDefinition * aParticleDefinition) |
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270 | { |
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271 | // remove preassigned decay |
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272 | if (thePreAssignedDecayProducts != 0) { |
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273 | #ifdef G4VERBOSE |
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274 | if (verboseLevel>0) { |
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275 | G4cerr << " G4DynamicParticle::SetDefinition()::" |
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276 | << "!!! Pre-assigned decay products is attached !!!! " << G4endl; |
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277 | G4cerr << "!!! New Definition is " << aParticleDefinition->GetParticleName() |
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278 | << " !!! " << G4endl; |
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279 | G4cerr << "!!! Pre-assigned decay products will be deleted !!!! " << G4endl; |
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280 | } |
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281 | #endif |
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282 | delete thePreAssignedDecayProducts; |
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283 | } |
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284 | thePreAssignedDecayProducts = 0; |
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285 | |
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286 | theParticleDefinition = aParticleDefinition; |
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287 | |
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288 | // set Dynamic mass/chrge |
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289 | theDynamicalMass = theParticleDefinition->GetPDGMass(); |
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290 | theDynamicalCharge = theParticleDefinition->GetPDGCharge(); |
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291 | theDynamicalSpin = theParticleDefinition->GetPDGSpin(); |
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292 | theDynamicalMagneticMoment = theParticleDefinition->GetPDGMagneticMoment(); |
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293 | |
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294 | // Set electron orbits |
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295 | if (theElectronOccupancy != 0) delete theElectronOccupancy; |
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296 | theElectronOccupancy =0; |
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297 | //AllocateElectronOccupancy(); |
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298 | |
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299 | } |
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300 | |
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301 | //////////////////// |
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302 | G4int G4DynamicParticle::operator==(const G4DynamicParticle &right) const |
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303 | { |
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304 | return (this == (G4DynamicParticle *) &right); |
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305 | } |
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306 | |
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307 | //////////////////// |
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308 | G4int G4DynamicParticle::operator!=(const G4DynamicParticle &right) const |
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309 | { |
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310 | return (this != (G4DynamicParticle *) &right); |
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311 | } |
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312 | |
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313 | |
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314 | |
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315 | //////////////////// |
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316 | // -- AllocateElectronOccupancy -- |
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317 | //////////////////// |
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318 | void G4DynamicParticle::AllocateElectronOccupancy() |
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319 | { |
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320 | const G4ParticleDefinition* particle = GetDefinition(); |
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321 | |
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322 | if (G4IonTable::IsIon(particle)) { |
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323 | // Only ions can have ElectronOccupancy |
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324 | theElectronOccupancy = new G4ElectronOccupancy(); |
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325 | |
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326 | } else { |
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327 | theElectronOccupancy = 0; |
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328 | |
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329 | } |
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330 | } |
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331 | |
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332 | //////////////////// |
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333 | // -- methods for setting Energy/Momentum -- |
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334 | //////////////////// |
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335 | void G4DynamicParticle::SetMomentum(const G4ThreeVector &momentum) |
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336 | { |
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337 | G4double pModule2 = momentum.mag2(); |
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338 | if (pModule2>0.0) { |
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339 | G4double mass = theDynamicalMass; |
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340 | SetMomentumDirection(momentum.unit()); |
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341 | SetKineticEnergy(std::sqrt(pModule2 + mass*mass)-mass); |
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342 | } else { |
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343 | SetMomentumDirection(1.0,0.0,0.0); |
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344 | SetKineticEnergy(0.0); |
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345 | } |
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346 | } |
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347 | |
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348 | //////////////////// |
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349 | void G4DynamicParticle::Set4Momentum(const G4LorentzVector &momentum ) |
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350 | { |
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351 | G4double pModule2 = momentum.vect().mag2(); |
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352 | if (pModule2>0.0) { |
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353 | SetMomentumDirection(momentum.vect().unit()); |
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354 | G4double totalenergy = momentum.t(); |
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355 | G4double mass2 = totalenergy*totalenergy - pModule2; |
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356 | if(mass2 < EnergyMomentumRelationAllowance*EnergyMomentumRelationAllowance) { |
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357 | theDynamicalMass = 0.; |
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358 | SetKineticEnergy(totalenergy); |
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359 | } else { |
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360 | theDynamicalMass = std::sqrt(mass2); |
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361 | SetKineticEnergy(totalenergy-theDynamicalMass); |
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362 | } |
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363 | } else { |
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364 | SetMomentumDirection(1.0,0.0,0.0); |
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365 | SetKineticEnergy(0.0); |
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366 | } |
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367 | } |
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368 | |
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369 | |
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370 | //////////////////// |
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371 | // --- Dump Information -- |
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372 | //////////////////// |
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373 | void G4DynamicParticle::DumpInfo(G4int mode) const |
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374 | { |
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375 | #ifdef G4VERBOSE |
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376 | if (theParticleDefinition == 0) { |
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377 | G4cout << " G4DynamicParticle::DumpInfo():: !!!Particle type not defined !!!! " << G4endl; |
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378 | } else { |
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379 | G4cout << " Particle type - " << theParticleDefinition->GetParticleName() << G4endl |
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380 | << " mass: " << GetMass()/GeV << "[GeV]" <<G4endl |
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381 | << " charge: " << GetCharge()/eplus << "[e]" <<G4endl |
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382 | << " Direction x: " << GetMomentumDirection().x() << ", y: " |
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383 | << GetMomentumDirection().y() << ", z: " |
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384 | << GetMomentumDirection().z() << G4endl |
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385 | << " Total Momentum = " << GetTotalMomentum() /GeV << "[GeV]" << G4endl |
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386 | << " Momentum: " << GetMomentum().x() /GeV << "[GeV]" << ", y: " |
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387 | << GetMomentum().y() /GeV << "[GeV]" << ", z: " |
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388 | << GetMomentum().z() /GeV << "[GeV]" << G4endl |
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389 | << " Total Energy = " << GetTotalEnergy()/GeV << "[GeV]" << G4endl |
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390 | << " Kinetic Energy = " << GetKineticEnergy() /GeV << "[GeV]" << G4endl |
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391 | << " MagneticMoment [MeV/T]: " << GetMagneticMoment()/MeV*tesla << G4endl |
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392 | << " ProperTime = " << GetProperTime() /ns << "[ns]" << G4endl; |
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393 | |
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394 | if (mode>0) { |
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395 | if( theElectronOccupancy != 0) { |
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396 | theElectronOccupancy->DumpInfo(); |
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397 | } |
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398 | } |
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399 | } |
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400 | #endif |
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401 | } |
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402 | |
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403 | //////////////////////// |
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404 | G4double G4DynamicParticle::GetElectronMass() const |
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405 | { |
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406 | static G4double electronMass = 0.0; |
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407 | |
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408 | // check if electron exits and get the mass |
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409 | if (electronMass<=0.0) { |
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410 | G4ParticleDefinition* electron = G4ParticleTable::GetParticleTable()->FindParticle("e-"); |
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411 | if (electron == 0) { |
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412 | G4Exception("G4DynamicParticle: G4Electron is not defined !!"); |
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413 | } |
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414 | electronMass = electron->GetPDGMass(); |
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415 | } |
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416 | |
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417 | return electronMass; |
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418 | } |
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