| 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 | #include "globals.hh" |
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| 28 | #include "G4VAnnihilationCollision.hh" |
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| 29 | #include "G4KineticTrack.hh" |
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| 30 | #include "G4VCrossSectionSource.hh" |
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| 31 | #include "G4Proton.hh" |
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| 32 | #include "G4Neutron.hh" |
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| 33 | #include "G4XNNElastic.hh" |
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| 34 | #include "G4AngularDistribution.hh" |
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| 35 | #include "G4ThreeVector.hh" |
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| 36 | #include "G4LorentzVector.hh" |
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| 37 | #include "G4LorentzRotation.hh" |
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| 38 | #include "G4KineticTrackVector.hh" |
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| 39 | #include "Randomize.hh" |
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| 40 | #include "G4PionPlus.hh" |
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| 41 | |
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| 42 | |
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| 43 | G4VAnnihilationCollision::G4VAnnihilationCollision() |
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| 44 | { |
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| 45 | } |
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| 46 | |
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| 47 | |
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| 48 | G4VAnnihilationCollision::~G4VAnnihilationCollision() |
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| 49 | { |
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| 50 | } |
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| 51 | |
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| 52 | |
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| 53 | G4KineticTrackVector* G4VAnnihilationCollision::FinalState(const G4KineticTrack& trk1, |
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| 54 | const G4KineticTrack& trk2) const |
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| 55 | { |
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| 56 | G4LorentzVector p = trk1.Get4Momentum() + trk2.Get4Momentum(); |
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| 57 | G4double sqrtS = p.m(); |
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| 58 | // G4double s = sqrtS * sqrtS; |
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| 59 | |
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| 60 | // G4double m1 = trk1.GetActualMass(); |
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| 61 | // G4double m2 = trk2.GetActualMass(); |
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| 62 | |
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| 63 | G4ParticleDefinition* OutputDefinition = const_cast<G4ParticleDefinition *>( GetOutgoingParticle(trk1,trk2) ); |
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| 64 | |
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| 65 | // Unit vector of three-momentum |
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| 66 | |
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| 67 | G4ThreeVector pFinal(0.0, 0.0, 0.0); |
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| 68 | G4double eFinal = sqrtS; |
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| 69 | |
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| 70 | G4LorentzVector p4Final(pFinal, eFinal); |
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| 71 | |
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| 72 | // Lorentz transformation |
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| 73 | G4LorentzRotation toLabFrame(p.boostVector()); |
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| 74 | p4Final *= toLabFrame; |
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| 75 | |
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| 76 | G4KineticTrack* final = new G4KineticTrack(OutputDefinition, 0.0, |
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| 77 | trk1.GetPosition(), p4Final); |
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| 78 | |
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| 79 | G4KineticTrackVector* finalTracks = new G4KineticTrackVector; |
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| 80 | |
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| 81 | finalTracks->push_back(final); |
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| 82 | |
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| 83 | return finalTracks; |
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| 84 | } |
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| 85 | |
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