[819] | 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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