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25 //
26 // INCL++ intra-nuclear cascade model
27 // Alain Boudard, CEA-Saclay, France
28 // Joseph Cugnon, University of Liege, Belgium
29 // Jean-Christophe David, CEA-Saclay, France
30 // Pekka Kaitaniemi, CEA-Saclay, France, and Helsinki Institute of Physics, Finland
31 // Sylvie Leray, CEA-Saclay, France
32 // Davide Mancusi, CEA-Saclay, France
33 //
34 #define INCLXX_IN_GEANT4_MODE 1
35
36 #include "globals.hh"
37
38 #include "G4INCLNNToNNEtaChannel.hh"
39 #include "G4INCLKinematicsUtils.hh"
40 #include "G4INCLBinaryCollisionAvatar.hh"
41 #include "G4INCLRandom.hh"
42 #include "G4INCLGlobals.hh"
43 #include "G4INCLLogger.hh"
44 #include <algorithm>
45 #include "G4INCLPhaseSpaceGenerator.hh"
46
47 namespace G4INCL {
48
49 const G4double NNToNNEtaChannel::angularSlope = 6.; // why 6.? same as in multipions...
50
51 NNToNNEtaChannel::NNToNNEtaChannel(Particle *p1, Particle *p2)
52 : iso1(0),
53 iso2(0),
54 particle1(p1),
55 particle2(p2)
56 {}
57
58 NNToNNEtaChannel::~NNToNNEtaChannel(){
59
60 }
61
62 void NNToNNEtaChannel::fillFinalState(FinalState *fs) {
63
64 iso1=ParticleTable::getIsospin(particle1->getType());
65 iso2=ParticleTable::getIsospin(particle2->getType());
66
67 ParticleList list;
68 list.push_back(particle1);
69 list.push_back(particle2);
70 fs->addModifiedParticle(particle1);
71 fs->addModifiedParticle(particle2);
72
73 const G4double sqrtS = KinematicsUtils::totalEnergyInCM(particle1, particle2);
74
75 const ParticleType tn1=ParticleTable::getNucleonType(iso1);
76 particle1->setType(tn1);
77 const ParticleType tn2=ParticleTable::getNucleonType(iso2);
78 particle2->setType(tn2);
79 const ThreeVector &rcolnucleon1 = particle1->getPosition();
80 const ThreeVector &rcolnucleon2 = particle2->getPosition();
81 const ThreeVector rcol = (rcolnucleon1+rcolnucleon2)*0.5;
82 const ThreeVector zero;
83 ParticleType etaType=Eta;
84 Particle *etaCreated = new Particle(etaType,zero,rcol);
85 list.push_back(etaCreated);
86 fs->addCreatedParticle(etaCreated);
87
88 G4int biasIndex = ((Random::shoot()<0.5) ? 0 : 1);
89 PhaseSpaceGenerator::generateBiased(sqrtS, list, biasIndex, angularSlope);
90
91 }
92
93 }
94