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 | // $Id: G4KineticTrack.hh,v 1.0 1998/05/20 |
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29 | // ----------------------------------------------------------------------------- |
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30 | // GEANT 4 class header file |
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31 | // |
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32 | // History: first implementation, A. Feliciello, 20th May 1998 |
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33 | // ----------------------------------------------------------------------------- |
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34 | |
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35 | #ifndef G4KineticTrack_h |
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36 | #define G4KineticTrack_h 1 |
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37 | |
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38 | #include "globals.hh" |
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39 | #include "G4ios.hh" |
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40 | |
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41 | |
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42 | #include "Randomize.hh" |
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43 | #include "G4ThreeVector.hh" |
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44 | #include "G4LorentzVector.hh" |
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45 | #include "G4VKineticNucleon.hh" |
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46 | #include "G4Nucleon.hh" |
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47 | #include "G4ParticleDefinition.hh" |
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48 | #include "G4VDecayChannel.hh" |
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49 | |
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50 | // #include "G4Allocator.hh" |
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51 | |
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52 | class G4KineticTrackVector; |
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53 | |
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54 | |
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55 | |
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56 | |
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57 | |
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58 | class G4KineticTrack : public G4VKineticNucleon |
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59 | { |
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60 | public: |
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61 | |
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62 | G4KineticTrack(); |
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63 | |
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64 | G4KineticTrack(const G4KineticTrack& right); |
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65 | |
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66 | G4KineticTrack(G4ParticleDefinition* aDefinition, |
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67 | G4double aFormationTime, |
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68 | G4ThreeVector aPosition, |
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69 | G4LorentzVector& a4Momentum); |
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70 | G4KineticTrack(G4Nucleon * nucleon, |
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71 | G4ThreeVector aPosition, |
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72 | G4LorentzVector& a4Momentum); |
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73 | |
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74 | ~G4KineticTrack(); |
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75 | |
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76 | const G4KineticTrack& operator=(const G4KineticTrack& right); |
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77 | |
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78 | G4int operator==(const G4KineticTrack& right) const; |
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79 | |
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80 | G4int operator!=(const G4KineticTrack& right) const; |
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81 | /* |
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82 | inline void *operator new(size_t); |
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83 | inline void operator delete(void *aTrack); |
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84 | */ |
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85 | G4ParticleDefinition* GetDefinition() const; |
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86 | void SetDefinition(G4ParticleDefinition* aDefinition); |
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87 | |
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88 | G4double GetFormationTime() const; |
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89 | void SetFormationTime(G4double aFormationTime); |
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90 | |
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91 | const G4ThreeVector& GetPosition() const; |
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92 | void SetPosition(const G4ThreeVector aPosition); |
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93 | |
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94 | const G4LorentzVector& Get4Momentum() const; |
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95 | void Set4Momentum(const G4LorentzVector& a4Momentum); |
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96 | void Update4Momentum(G4double aEnergy); // update E and p, not changing mass |
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97 | void Update4Momentum(const G4ThreeVector & aMomentum); // idem |
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98 | void SetTrackingMomentum(const G4LorentzVector& a4Momentum); |
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99 | void UpdateTrackingMomentum(G4double aEnergy); // update E and p, not changing mass |
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100 | void UpdateTrackingMomentum(const G4ThreeVector & aMomentum); // idem |
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101 | |
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102 | const G4LorentzVector& GetTrackingMomentum() const; |
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103 | |
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104 | G4double SampleResidualLifetime(); |
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105 | |
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106 | void Hit(); |
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107 | void SetNucleon(G4Nucleon * aN) {theNucleon = aN;} |
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108 | |
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109 | G4bool IsParticipant() const; |
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110 | |
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111 | G4KineticTrackVector* Decay(); |
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112 | |
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113 | // LB move to public (before was private) LB |
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114 | G4double* GetActualWidth() const; |
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115 | |
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116 | G4double GetActualMass() const; |
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117 | G4int GetnChannels() const; |
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118 | |
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119 | // position relativ to nucleus "state" |
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120 | enum CascadeState {undefined, outside, going_in, inside, |
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121 | going_out, gone_out, captured, miss_nucleus }; |
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122 | |
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123 | CascadeState SetState(const CascadeState new_state); |
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124 | CascadeState GetState() const; |
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125 | void SetProjectilePotential(const G4double aPotential); |
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126 | G4double GetProjectilePotential() const; |
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127 | |
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128 | |
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129 | private: |
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130 | |
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131 | |
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132 | void SetnChannels(const G4int aChannel); |
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133 | |
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134 | void SetActualWidth(G4double* anActualWidth); |
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135 | |
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136 | G4double EvaluateTotalActualWidth(); |
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137 | |
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138 | G4double EvaluateCMMomentum (const G4double mass, |
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139 | const G4double* m_ij) const; |
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140 | |
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141 | G4double IntegrateCMMomentum(const G4double lowerLimit) const; |
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142 | |
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143 | G4double IntegrateCMMomentum(const G4double lowerLimit ,const G4double polemass) const; |
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144 | |
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145 | G4double IntegrateCMMomentum2() const; |
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146 | |
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147 | public: |
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148 | |
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149 | G4double BrWig(const G4double Gamma, |
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150 | const G4double rmass, |
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151 | const G4double mass) const; |
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152 | |
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153 | private: |
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154 | G4double IntegrandFunction1 (G4double xmass) const; |
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155 | G4double IntegrandFunction2 (G4double xmass) const; |
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156 | G4double IntegrandFunction3 (G4double xmass) const; |
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157 | G4double IntegrandFunction4 (G4double xmass) const; |
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158 | public: |
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159 | // friend G4double IntegrandFunction3 (G4double xmass); |
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160 | |
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161 | // friend G4double IntegrandFunction4 (G4double xmass); |
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162 | |
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163 | // LB new variable created LB |
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164 | G4int chosench; |
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165 | |
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166 | |
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167 | private: |
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168 | |
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169 | G4ParticleDefinition* theDefinition; |
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170 | |
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171 | G4double theFormationTime; |
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172 | |
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173 | G4ThreeVector thePosition; |
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174 | |
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175 | G4LorentzVector the4Momentum; |
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176 | G4LorentzVector theFermi3Momentum; |
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177 | G4LorentzVector theTotal4Momentum; |
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178 | |
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179 | G4Nucleon * theNucleon; |
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180 | |
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181 | G4int nChannels; |
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182 | |
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183 | G4double theActualMass; |
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184 | |
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185 | G4double* theActualWidth; |
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186 | |
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187 | // Temporary storage for daughter masses and widths |
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188 | // (needed because Integrand Function cannot take > 1 argument) |
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189 | G4double* theDaughterMass; |
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190 | G4double* theDaughterWidth; |
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191 | |
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192 | CascadeState theStateToNucleus; |
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193 | |
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194 | G4double theProjectilePotential; |
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195 | }; |
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196 | |
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197 | // extern G4Allocator<G4KineticTrack> theKTAllocator; |
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198 | |
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199 | |
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200 | // Class G4KineticTrack |
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201 | /* |
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202 | inline void * G4KineticTrack::operator new(size_t) |
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203 | { |
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204 | void * aT; |
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205 | aT = (void *) theKTAllocator.MallocSingle(); |
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206 | return aT; |
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207 | } |
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208 | |
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209 | inline void G4KineticTrack::operator delete(void * aT) |
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210 | { |
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211 | theKTAllocator.FreeSingle((G4KineticTrack *) aT); |
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212 | } |
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213 | */ |
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214 | |
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215 | inline G4ParticleDefinition* G4KineticTrack::GetDefinition() const |
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216 | { |
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217 | return theDefinition; |
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218 | } |
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219 | |
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220 | inline void G4KineticTrack::SetDefinition(G4ParticleDefinition* aDefinition) |
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221 | { |
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222 | theDefinition = aDefinition; |
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223 | } |
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224 | |
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225 | |
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226 | |
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227 | inline G4double G4KineticTrack::GetFormationTime() const |
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228 | { |
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229 | return theFormationTime; |
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230 | } |
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231 | |
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232 | inline void G4KineticTrack::SetFormationTime(G4double aFormationTime) |
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233 | { |
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234 | theFormationTime = aFormationTime; |
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235 | } |
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236 | |
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237 | |
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238 | |
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239 | inline const G4ThreeVector& G4KineticTrack::GetPosition() const |
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240 | { |
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241 | return thePosition; |
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242 | } |
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243 | |
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244 | inline void G4KineticTrack::SetPosition(const G4ThreeVector aPosition) |
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245 | { |
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246 | thePosition = aPosition; |
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247 | } |
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248 | |
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249 | |
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250 | inline const G4LorentzVector& G4KineticTrack::Get4Momentum() const |
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251 | { |
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252 | return theTotal4Momentum; |
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253 | } |
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254 | |
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255 | inline const G4LorentzVector& G4KineticTrack::GetTrackingMomentum() const |
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256 | { |
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257 | return the4Momentum; |
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258 | } |
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259 | |
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260 | inline void G4KineticTrack::Set4Momentum(const G4LorentzVector& a4Momentum) |
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261 | { |
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262 | // set the4Momentum and update theTotal4Momentum |
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263 | |
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264 | theTotal4Momentum=a4Momentum; |
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265 | the4Momentum = theTotal4Momentum; |
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266 | theFermi3Momentum=G4LorentzVector(0); |
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267 | } |
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268 | |
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269 | inline void G4KineticTrack::Update4Momentum(G4double aEnergy) |
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270 | { |
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271 | // update the4Momentum with aEnergy at constant mass (the4Momentum.mag() |
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272 | // updates theTotal4Momentum as well. |
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273 | G4double newP(0); |
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274 | G4double mass2=theTotal4Momentum.mag2(); |
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275 | if ( sqr(aEnergy) > mass2 ) |
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276 | { |
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277 | newP = std::sqrt(sqr(aEnergy) - mass2 ); |
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278 | } else |
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279 | { |
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280 | aEnergy=std::sqrt(mass2); |
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281 | } |
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282 | Set4Momentum(G4LorentzVector(newP*the4Momentum.vect().unit(), aEnergy)); |
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283 | } |
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284 | |
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285 | inline void G4KineticTrack::Update4Momentum(const G4ThreeVector & aMomentum) |
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286 | { |
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287 | // update the4Momentum with aMomentum at constant mass (the4Momentum.mag() |
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288 | // updates theTotal4Momentum as well. |
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289 | G4double newE=std::sqrt(theTotal4Momentum.mag2() + aMomentum.mag2()); |
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290 | Set4Momentum(G4LorentzVector(aMomentum, newE)); |
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291 | } |
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292 | |
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293 | inline void G4KineticTrack::SetTrackingMomentum(const G4LorentzVector& aMomentum) |
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294 | { |
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295 | // set the4Momentum and update theTotal4Momentum, keep the mass of aMomentum |
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296 | |
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297 | the4Momentum = aMomentum; |
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298 | theTotal4Momentum=the4Momentum+theFermi3Momentum; |
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299 | // keep mass of aMomentum for the total momentum |
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300 | G4double m2 = aMomentum.mag2(); |
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301 | G4double p2=theTotal4Momentum.vect().mag2(); |
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302 | theTotal4Momentum.setE(std::sqrt(m2+p2)); |
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303 | } |
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304 | |
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305 | inline void G4KineticTrack::UpdateTrackingMomentum(G4double aEnergy) |
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306 | { |
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307 | // update the4Momentum with aEnergy at constant mass (the4Momentum.mag() |
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308 | // updates theTotal4Momentum as well. |
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309 | G4double newP(0); |
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310 | G4double mass2=theTotal4Momentum.mag2(); |
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311 | if ( sqr(aEnergy) > mass2 ) |
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312 | { |
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313 | newP = std::sqrt(sqr(aEnergy) - mass2 ); |
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314 | } else |
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315 | { |
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316 | aEnergy=std::sqrt(mass2); |
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317 | } |
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318 | SetTrackingMomentum(G4LorentzVector(newP*the4Momentum.vect().unit(), aEnergy)); |
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319 | } |
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320 | |
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321 | inline void G4KineticTrack::UpdateTrackingMomentum(const G4ThreeVector & aMomentum) |
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322 | { |
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323 | // update the4Momentum with aMomentum at constant mass (the4Momentum.mag() |
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324 | // updates theTotal4Momentum as well. |
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325 | G4double newE=std::sqrt(theTotal4Momentum.mag2() + aMomentum.mag2()); |
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326 | SetTrackingMomentum(G4LorentzVector(aMomentum, newE)); |
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327 | } |
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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 | inline G4double G4KineticTrack::GetActualMass() const |
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333 | { |
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334 | return std::sqrt(std::abs(the4Momentum.mag2())); |
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335 | } |
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336 | |
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337 | |
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338 | |
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339 | inline G4int G4KineticTrack::GetnChannels() const |
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340 | { |
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341 | return nChannels; |
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342 | } |
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343 | |
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344 | inline void G4KineticTrack::SetnChannels(const G4int numberOfChannels) |
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345 | { |
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346 | nChannels = numberOfChannels; |
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347 | } |
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348 | |
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349 | |
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350 | |
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351 | inline G4double* G4KineticTrack::GetActualWidth() const |
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352 | { |
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353 | return theActualWidth; |
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354 | } |
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355 | |
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356 | inline void G4KineticTrack::SetActualWidth(G4double* anActualWidth) |
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357 | { |
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358 | theActualWidth = anActualWidth; |
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359 | } |
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360 | |
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361 | |
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362 | |
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363 | inline G4double G4KineticTrack::EvaluateTotalActualWidth() |
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364 | { |
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365 | G4int index; |
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366 | G4double theTotalActualWidth = 0.0; |
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367 | for (index = nChannels - 1; index >= 0; index--) |
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368 | { |
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369 | theTotalActualWidth += theActualWidth[index]; |
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370 | } |
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371 | return theTotalActualWidth; |
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372 | } |
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373 | |
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374 | |
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375 | |
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376 | inline G4double G4KineticTrack::SampleResidualLifetime() |
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377 | { |
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378 | G4double theTotalActualWidth = this->EvaluateTotalActualWidth(); |
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379 | G4double tau = hbar_Planck * (-1.0 / theTotalActualWidth); |
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380 | G4double theResidualLifetime = tau * std::log(G4UniformRand()); |
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381 | return theResidualLifetime*the4Momentum.gamma(); |
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382 | } |
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383 | |
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384 | |
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385 | |
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386 | inline G4double G4KineticTrack::EvaluateCMMomentum(const G4double m, |
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387 | const G4double* m_ij) const |
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388 | { |
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389 | G4double theCMMomentum; |
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390 | if((m_ij[0]+m_ij[1])<m) |
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391 | theCMMomentum = 1 / (2 * m) * |
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392 | std::sqrt (((m * m) - (m_ij[0] + m_ij[1]) * (m_ij[0] + m_ij[1])) * |
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393 | ((m * m) - (m_ij[0] - m_ij[1]) * (m_ij[0] - m_ij[1]))); |
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394 | else |
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395 | theCMMomentum=0.; |
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396 | |
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397 | return theCMMomentum; |
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398 | } |
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399 | |
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400 | inline G4double G4KineticTrack::BrWig(const G4double Gamma, const G4double rmass, const G4double mass) const |
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401 | { |
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402 | G4double Norm = twopi; |
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403 | return (Gamma/((mass-rmass)*(mass-rmass)+Gamma*Gamma/4.))/Norm; |
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404 | } |
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405 | |
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406 | inline |
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407 | void G4KineticTrack::Hit() |
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408 | { |
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409 | if(theNucleon) |
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410 | { |
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411 | theNucleon->Hit(1); |
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412 | } |
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413 | } |
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414 | |
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415 | inline |
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416 | G4bool G4KineticTrack::IsParticipant() const |
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417 | { |
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418 | if(!theNucleon) return true; |
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419 | return theNucleon->AreYouHit(); |
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420 | } |
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421 | |
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422 | inline |
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423 | G4KineticTrack::CascadeState G4KineticTrack::GetState() const |
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424 | { |
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425 | return theStateToNucleus; |
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426 | } |
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427 | |
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428 | inline |
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429 | G4KineticTrack::CascadeState G4KineticTrack::SetState(const CascadeState new_state) |
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430 | { |
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431 | CascadeState old_state=theStateToNucleus; |
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432 | theStateToNucleus=new_state; |
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433 | return old_state; |
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434 | } |
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435 | |
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436 | inline |
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437 | void G4KineticTrack::SetProjectilePotential(G4double aPotential) |
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438 | { |
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439 | theProjectilePotential = aPotential; |
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440 | } |
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441 | inline |
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442 | G4double G4KineticTrack::GetProjectilePotential() const |
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443 | { |
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444 | return theProjectilePotential; |
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445 | } |
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446 | |
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447 | #endif |
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448 | |
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449 | |
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450 | |
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