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 | // J.L. Chuma, TRIUMF, 31-Oct-1996 |
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29 | // last modified: 19-Dec-1996 |
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30 | // Modified by J.L.Chuma, 05-May-97 |
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31 | |
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32 | #include "G4ReactionProduct.hh" |
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33 | |
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34 | G4ReactionProduct::G4ReactionProduct() : |
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35 | theParticleDefinition(NULL), |
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36 | formationTime(0.0), |
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37 | hasInitialStateParton(false), |
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38 | mass(0.0), |
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39 | totalEnergy(0.0), |
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40 | kineticEnergy(0.0), |
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41 | timeOfFlight(0.0), |
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42 | side(0), |
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43 | NewlyAdded(false), |
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44 | MayBeKilled(true) |
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45 | { |
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46 | SetMomentum( 0.0, 0.0, 0.0 ); |
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47 | SetPositionInNucleus( 0.0, 0.0, 0.0 ); |
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48 | } |
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49 | |
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50 | G4ReactionProduct::G4ReactionProduct( |
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51 | G4ParticleDefinition *aParticleDefinition ) |
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52 | { |
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53 | SetMomentum( 0.0, 0.0, 0.0 ); |
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54 | SetPositionInNucleus( 0.0, 0.0, 0.0 ); |
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55 | formationTime = 0.0; |
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56 | hasInitialStateParton = false; |
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57 | theParticleDefinition = aParticleDefinition; |
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58 | mass = aParticleDefinition->GetPDGMass(); |
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59 | totalEnergy = mass; |
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60 | kineticEnergy = 0.0; |
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61 | (aParticleDefinition->GetPDGEncoding()<0) ? timeOfFlight=-1.0 : timeOfFlight=1.0; |
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62 | side = 0; |
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63 | NewlyAdded = false; |
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64 | MayBeKilled = true; |
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65 | } |
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66 | |
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67 | G4ReactionProduct::G4ReactionProduct( |
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68 | const G4ReactionProduct &right ) |
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69 | { |
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70 | theParticleDefinition = right.theParticleDefinition; |
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71 | positionInNucleus = right.positionInNucleus; |
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72 | formationTime = right.formationTime; |
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73 | hasInitialStateParton = right.hasInitialStateParton; |
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74 | momentum = right.momentum; |
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75 | mass = right.mass; |
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76 | totalEnergy = right.totalEnergy; |
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77 | kineticEnergy = right.kineticEnergy; |
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78 | timeOfFlight = right.timeOfFlight; |
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79 | side = right.side; |
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80 | NewlyAdded = right.NewlyAdded; |
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81 | MayBeKilled = right.MayBeKilled; |
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82 | } |
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83 | |
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84 | G4ReactionProduct &G4ReactionProduct::operator=( |
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85 | const G4ReactionProduct &right ) |
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86 | { |
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87 | if( this != &right ) { |
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88 | theParticleDefinition = right.theParticleDefinition; |
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89 | positionInNucleus = right.positionInNucleus; |
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90 | formationTime = right.formationTime; |
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91 | hasInitialStateParton = right.hasInitialStateParton; |
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92 | momentum = right.momentum; |
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93 | mass = right.mass; |
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94 | totalEnergy = right.totalEnergy; |
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95 | kineticEnergy = right.kineticEnergy; |
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96 | timeOfFlight = right.timeOfFlight; |
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97 | side = right.side; |
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98 | NewlyAdded = right.NewlyAdded; |
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99 | MayBeKilled = right.MayBeKilled; |
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100 | } |
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101 | return *this; |
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102 | } |
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103 | |
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104 | G4ReactionProduct &G4ReactionProduct::operator=( |
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105 | const G4DynamicParticle &right ) |
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106 | { |
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107 | theParticleDefinition = right.GetDefinition(); |
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108 | SetPositionInNucleus( 0.0, 0.0, 0.0 ); |
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109 | formationTime = 0.0; |
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110 | hasInitialStateParton = false; |
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111 | momentum = right.GetMomentum(); |
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112 | mass = right.GetDefinition()->GetPDGMass(); |
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113 | totalEnergy = right.GetTotalEnergy(); |
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114 | kineticEnergy = right.GetKineticEnergy(); |
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115 | (right.GetDefinition()->GetPDGEncoding()<0) ? timeOfFlight=-1.0 : timeOfFlight=1.0; |
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116 | side = 0; |
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117 | NewlyAdded = false; |
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118 | MayBeKilled = true; |
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119 | return *this; |
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120 | } |
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121 | |
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122 | G4ReactionProduct &G4ReactionProduct::operator=( |
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123 | const G4HadProjectile &right ) |
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124 | { |
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125 | theParticleDefinition = const_cast<G4ParticleDefinition *>(right.GetDefinition()); |
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126 | SetPositionInNucleus( 0.0, 0.0, 0.0 ); |
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127 | formationTime = 0.0; |
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128 | hasInitialStateParton = false; |
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129 | momentum = right.Get4Momentum().vect(); |
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130 | mass = right.GetDefinition()->GetPDGMass(); |
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131 | totalEnergy = right.Get4Momentum().e(); |
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132 | kineticEnergy = right.GetKineticEnergy(); |
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133 | (right.GetDefinition()->GetPDGEncoding()<0) ? timeOfFlight=-1.0 : timeOfFlight=1.0; |
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134 | side = 0; |
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135 | NewlyAdded = false; |
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136 | MayBeKilled = true; |
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137 | return *this; |
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138 | } |
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139 | |
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140 | void G4ReactionProduct::SetDefinitionAndUpdateE( |
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141 | G4ParticleDefinition *aParticleDefinition ) |
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142 | { |
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143 | G4double aKineticEnergy = GetKineticEnergy(); |
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144 | G4double pp = GetMomentum().mag(); |
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145 | G4ThreeVector aMomentum = GetMomentum(); |
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146 | SetDefinition( aParticleDefinition ); |
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147 | SetKineticEnergy( aKineticEnergy ); |
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148 | if( pp > DBL_MIN ) |
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149 | SetMomentum( aMomentum * (std::sqrt(aKineticEnergy*aKineticEnergy + |
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150 | 2*aKineticEnergy*GetMass())/pp) ); |
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151 | } |
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152 | |
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153 | void G4ReactionProduct::SetDefinition( |
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154 | G4ParticleDefinition *aParticleDefinition ) |
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155 | { |
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156 | theParticleDefinition = aParticleDefinition; |
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157 | mass = aParticleDefinition->GetPDGMass(); |
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158 | totalEnergy = mass; |
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159 | kineticEnergy = 0.0; |
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160 | (aParticleDefinition->GetPDGEncoding()<0) ? |
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161 | timeOfFlight=-1.0 : timeOfFlight=1.0; |
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162 | } |
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163 | |
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164 | void G4ReactionProduct::SetMomentum( |
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165 | const G4double x, const G4double y, const G4double z ) |
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166 | { |
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167 | momentum.setX( x ); |
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168 | momentum.setY( y ); |
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169 | momentum.setZ( z ); |
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170 | } |
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171 | |
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172 | void G4ReactionProduct::SetMomentum( |
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173 | const G4double x, const G4double y ) |
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174 | { |
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175 | momentum.setX( x ); |
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176 | momentum.setY( y ); |
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177 | } |
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178 | |
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179 | void G4ReactionProduct::SetMomentum( const G4double z ) |
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180 | { |
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181 | momentum.setZ( z ); |
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182 | } |
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183 | |
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184 | void G4ReactionProduct::SetZero() |
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185 | { |
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186 | SetMomentum( 0.0, 0.0, 0.0 ); |
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187 | totalEnergy = 0.0; |
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188 | kineticEnergy = 0.0; |
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189 | mass = 0.0; |
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190 | timeOfFlight = 0.0; |
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191 | side = 0; |
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192 | NewlyAdded = false; |
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193 | SetPositionInNucleus( 0.0, 0.0, 0.0 ); |
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194 | formationTime = 0.0; |
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195 | hasInitialStateParton = false; |
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196 | } |
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197 | |
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198 | void G4ReactionProduct::Lorentz( |
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199 | const G4ReactionProduct &p1, const G4ReactionProduct &p2 ) |
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200 | { |
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201 | G4ThreeVector p1M = p1.momentum; |
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202 | G4ThreeVector p2M = p2.momentum; |
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203 | G4double p1x = p1M.x(); G4double p1y = p1M.y(); G4double p1z = p1M.z(); |
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204 | G4double p2x = p2M.x(); G4double p2y = p2M.y(); G4double p2z = p2M.z(); |
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205 | G4double a = ( (p1x*p2x+p1y*p2y+p1z*p2z)/(p2.totalEnergy+p2.mass) - |
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206 | p1.totalEnergy ) / p2.mass; |
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207 | G4double x = p1x+a*p2x; |
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208 | G4double y = p1y+a*p2y; |
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209 | G4double z = p1z+a*p2z; |
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210 | G4double p = std::sqrt(x*x+y*y+z*z); |
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211 | SetMass( p1.mass ); |
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212 | SetTotalEnergy( std::sqrt( (p1.mass+p)*(p1.mass+p) - 2.*p1.mass*p ) ); |
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213 | //SetTotalEnergy( std::sqrt( p1.mass*p1.mass + x*x + y*y + z*z ) ); |
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214 | SetMomentum( x, y, z ); |
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215 | } |
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216 | |
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217 | G4double G4ReactionProduct::Angle( |
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218 | const G4ReactionProduct& p ) const |
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219 | { |
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220 | G4ThreeVector tM = momentum; |
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221 | G4ThreeVector pM = p.momentum; |
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222 | G4double tx = tM.x(); G4double ty = tM.y(); G4double tz = tM.z(); |
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223 | G4double px = pM.x(); G4double py = pM.y(); G4double pz = pM.z(); |
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224 | G4double a = std::sqrt( ( px*px + py*py + pz*pz ) * ( tx*tx + ty*ty + tz*tz ) ); |
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225 | if( a == 0.0 ) { |
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226 | return 0.0; |
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227 | } else { |
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228 | a = ( tx*px + ty*py + tz*pz ) / a; |
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229 | if( std::fabs(a) > 1.0 ) { a<0.0 ? a=-1.0 : a=1.0; } |
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230 | return std::acos( a ); |
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231 | } |
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232 | } |
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233 | |
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234 | G4ReactionProduct operator+( |
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235 | const G4ReactionProduct& p1, const G4ReactionProduct& p2 ) |
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236 | { |
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237 | G4double totEnergy = p1.totalEnergy + p2.totalEnergy; |
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238 | G4double x = p1.momentum.x() + p2.momentum.x(); |
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239 | G4double y = p1.momentum.y() + p2.momentum.y(); |
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240 | G4double z = p1.momentum.z() + p2.momentum.z(); |
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241 | G4double newMass = totEnergy*totEnergy - ( x*x + y*y + z*z ); |
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242 | if( newMass < 0.0 ) |
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243 | newMass = -1. * std::sqrt( -newMass ); |
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244 | else |
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245 | newMass = std::sqrt( newMass ); |
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246 | G4ReactionProduct result; |
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247 | result.SetMass( newMass ); |
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248 | result.SetMomentum( x, y, z ); |
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249 | result.SetTotalEnergy( totEnergy ); |
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250 | result.SetPositionInNucleus( 0.0, 0.0, 0.0 ); |
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251 | result.SetFormationTime(0.0); |
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252 | result.HasInitialStateParton(false); |
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253 | return result; |
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254 | } |
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255 | |
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256 | G4ReactionProduct operator-( |
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257 | const G4ReactionProduct& p1, const G4ReactionProduct& p2 ) |
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258 | { |
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259 | G4double totEnergy = p1.totalEnergy - p2.totalEnergy; |
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260 | G4double x = p1.momentum.x() - p2.momentum.x(); |
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261 | G4double y = p1.momentum.y() - p2.momentum.y(); |
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262 | G4double z = p1.momentum.z() - p2.momentum.z(); |
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263 | G4double newMass = totEnergy*totEnergy - ( x*x + y*y + z*z ); |
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264 | if( newMass < 0.0 ) |
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265 | newMass = -1. * std::sqrt( -newMass ); |
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266 | else |
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267 | newMass = std::sqrt( newMass ); |
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268 | G4ReactionProduct result; |
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269 | result.SetMass( newMass ); |
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270 | result.SetMomentum( x, y, z ); |
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271 | result.SetTotalEnergy( totEnergy ); |
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272 | result.SetPositionInNucleus( 0.0, 0.0, 0.0 ); |
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273 | result.SetFormationTime(0.0); |
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274 | result.HasInitialStateParton(false); |
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275 | return result; |
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276 | } |
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277 | /* end of code */ |
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278 | |
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