G4INCLNNToNSKChannel.cc

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//
// INCL++ intra-nuclear cascade model
// Alain Boudard, CEA-Saclay, France
// Joseph Cugnon, University of Liege, Belgium
// Jean-Christophe David, CEA-Saclay, France
// Pekka Kaitaniemi, CEA-Saclay, France, and Helsinki Institute of Physics, Finland
// Sylvie Leray, CEA-Saclay, France
// Davide Mancusi, CEA-Saclay, France
//
#define INCLXX_IN_GEANT4_MODE 1
 
#include "globals.hh"
 
#include "G4INCLNNToNSKChannel.hh"
#include "G4INCLKinematicsUtils.hh"
#include "G4INCLBinaryCollisionAvatar.hh"
#include "G4INCLRandom.hh"
#include "G4INCLGlobals.hh"
#include "G4INCLLogger.hh"
#include <algorithm>
#include "G4INCLPhaseSpaceGenerator.hh"
 
namespace G4INCL {
    
    const G4double NNToNSKChannel::angularSlope = 2.; // What is the exact effect? Sould be check
    
    NNToNSKChannel::NNToNSKChannel(Particle *p1, Particle *p2)
        : particle1(p1), particle2(p2)
        {}
    
    NNToNSKChannel::~NNToNSKChannel(){}
    
    void NNToNSKChannel::fillFinalState(FinalState *fs) {
    
        
        const G4double sqrtS = KinematicsUtils::totalEnergyInCM(particle1, particle2);
        
        const G4int iso = ParticleTable::getIsospin(particle1->getType()) + ParticleTable::getIsospin(particle2->getType());
        
        ParticleType KaonType;
        const G4double rdm = Random::shoot();
        // pp->pS+K0 (1/4)
        // pp->pS0K+ (1/8) // HEM
        // pp->pS0K+ (1/4) // Data
        // pp->nS+K+ (1)
        
        // pn->nS+K0 (1/4)
        // pn->pS-K+ (1/4)
        // pn->nS0K+ (5/8)
        // pn->pS0K0 (5/8)
        
        if(iso == 2){
            if(rdm * 6. < 4.){
                KaonType = KPlus;
                particle2->setType(SigmaPlus);
                particle1->setType(Neutron);
            }
            else if(rdm * 6. < 5.){
                KaonType = KZero;
                particle2->setType(SigmaPlus);
            }
            else{
                KaonType = KPlus;
                particle2->setType(SigmaZero);
            }
        }
        else if(iso == -2){
            if(rdm * 6. < 8.){
                KaonType = KZero;
                particle2->setType(SigmaMinus);
                particle1->setType(Proton);
            }
            else if(rdm * 6. < 5.){
                KaonType = KPlus;
                particle2->setType(SigmaMinus);
            }
            else{
                KaonType = KZero;
                particle2->setType(SigmaZero);
            }
        }
        else{
            if(rdm * 14. < 2.){
                KaonType = KZero;
                particle2->setType(SigmaPlus);
                particle1->setType(Neutron);
            }
            else if(rdm * 14. < 4.){
                KaonType = KPlus;
                particle2->setType(SigmaMinus);
                particle1->setType(Proton);
            }
            else if(rdm * 14. < 9.){
                KaonType = KPlus;
                particle2->setType(SigmaZero);
                particle1->setType(Neutron);
            }
            else{
                KaonType = KZero;
                particle2->setType(SigmaZero);
                particle1->setType(Proton);
            }
        }
        
        ParticleList list;
        list.push_back(particle1);
        list.push_back(particle2);
        const ThreeVector &rcol = particle2->getPosition();
        const ThreeVector zero;
        Particle *kaon = new Particle(KaonType,zero,rcol);
        list.push_back(kaon);
        
        if(Random::shoot()<0.5) PhaseSpaceGenerator::generateBiased(sqrtS, list, 0, angularSlope);
        else PhaseSpaceGenerator::generateBiased(sqrtS, list, 1, angularSlope);
        
        fs->addModifiedParticle(particle1);
        fs->addModifiedParticle(particle2);
        fs->addCreatedParticle(kaon);
        
        
    }
}