G4BinaryLightIonReaction Class Reference

#include <G4BinaryLightIonReaction.hh>

Inheritance diagram for G4BinaryLightIonReaction:

Public Member Functions
	G4BinaryLightIonReaction (G4VPreCompoundModel *ptr=0)
virtual	~G4BinaryLightIonReaction ()
G4HadFinalState *	ApplyYourself (const G4HadProjectile &aTrack, G4Nucleus &theNucleus)
void	SetPrecompound (G4VPreCompoundModel *ptr)
void	SetDeExcitation (G4ExcitationHandler *ptr)
virtual void	ModelDescription (std::ostream &) const
Public Member Functions inherited from G4HadronicInteraction
	G4HadronicInteraction (const G4String &modelName="HadronicModel")
virtual	~G4HadronicInteraction ()
virtual G4double	SampleInvariantT (const G4ParticleDefinition *p, G4double plab, G4int Z, G4int A)
virtual G4bool	IsApplicable (const G4HadProjectile &, G4Nucleus &)
G4double	GetMinEnergy () const
G4double	GetMinEnergy (const G4Material *aMaterial, const G4Element *anElement) const
void	SetMinEnergy (G4double anEnergy)
void	SetMinEnergy (G4double anEnergy, const G4Element *anElement)
void	SetMinEnergy (G4double anEnergy, const G4Material *aMaterial)
G4double	GetMaxEnergy () const
G4double	GetMaxEnergy (const G4Material *aMaterial, const G4Element *anElement) const
void	SetMaxEnergy (const G4double anEnergy)
void	SetMaxEnergy (G4double anEnergy, const G4Element *anElement)
void	SetMaxEnergy (G4double anEnergy, const G4Material *aMaterial)
const G4HadronicInteraction *	GetMyPointer () const
virtual G4int	GetVerboseLevel () const
virtual void	SetVerboseLevel (G4int value)
const G4String &	GetModelName () const
void	DeActivateFor (const G4Material *aMaterial)
void	ActivateFor (const G4Material *aMaterial)
void	DeActivateFor (const G4Element *anElement)
void	ActivateFor (const G4Element *anElement)
G4bool	IsBlocked (const G4Material *aMaterial) const
G4bool	IsBlocked (const G4Element *anElement) const
void	SetRecoilEnergyThreshold (G4double val)
G4double	GetRecoilEnergyThreshold () const
G4bool	operator== (const G4HadronicInteraction &right) const
G4bool	operator!= (const G4HadronicInteraction &right) const
virtual const std::pair < G4double, G4double >	GetFatalEnergyCheckLevels () const
virtual std::pair< G4double, G4double >	GetEnergyMomentumCheckLevels () const
void	SetEnergyMomentumCheckLevels (G4double relativeLevel, G4double absoluteLevel)

Additional Inherited Members
Protected Member Functions inherited from G4HadronicInteraction
void	SetModelName (const G4String &nam)
G4bool	IsBlocked () const
void	Block ()
Protected Attributes inherited from G4HadronicInteraction
G4HadFinalState	theParticleChange
G4int	verboseLevel
G4double	theMinEnergy
G4double	theMaxEnergy
G4bool	isBlocked

Detailed Description

Definition at line 34 of file G4BinaryLightIonReaction.hh.

Constructor & Destructor Documentation

G4BinaryLightIonReaction::G4BinaryLightIonReaction

(

G4VPreCompoundModel *

ptr = 0

)

Definition at line 49 of file G4BinaryLightIonReaction.cc.

References G4HadronicInteractionRegistry::FindModel(), G4VPreCompoundModel::GetExcitationHandler(), and G4HadronicInteractionRegistry::Instance().

: G4HadronicInteraction("Binary Light Ion Cascade"),
  theProjectileFragmentation(ptr),
  pA(0),pZ(0), tA(0),tZ(0),spectatorA(0),spectatorZ(0),
  projectile3dNucleus(0),target3dNucleus(0)
{
    if(!ptr) {
      G4HadronicInteraction* p =
        G4HadronicInteractionRegistry::Instance()->FindModel("PRECO");
      G4VPreCompoundModel* pre = static_cast<G4VPreCompoundModel*>(p);
      if(!pre) { pre = new G4PreCompoundModel(); }
      theProjectileFragmentation = pre;
    }
    theModel = new G4BinaryCascade(theProjectileFragmentation);
    theHandler = theProjectileFragmentation->GetExcitationHandler();

    debug_G4BinaryLightIonReactionResults=getenv("debug_G4BinaryLightIonReactionResults")!=0;
}

G4BinaryLightIonReaction::~G4BinaryLightIonReaction ( )

virtual

Definition at line 68 of file G4BinaryLightIonReaction.cc.

{}

Member Function Documentation

G4HadFinalState * G4BinaryLightIonReaction::ApplyYourself ( const G4HadProjectile &  aTrack, G4Nucleus &  theNucleus  )

virtual

Implements G4HadronicInteraction.

Definition at line 87 of file G4BinaryLightIonReaction.cc.

References G4HadFinalState::AddSecondary(), G4HadFinalState::Clear(), debug, CLHEP::HepLorentzVector::e(), python.hepunit::eplus, G4cerr, G4cout, G4endl, G4lrint(), G4HadProjectile::Get4Momentum(), G4DynamicParticle::Get4Momentum(), G4Nucleus::GetA_asInt(), G4ParticleDefinition::GetBaryonNumber(), G4HadProjectile::GetDefinition(), G4IonTable::GetIonMass(), G4ParticleTable::GetIonTable(), G4HadProjectile::GetKineticEnergy(), G4HadFinalState::GetNumberOfSecondaries(), G4ParticleTable::GetParticleTable(), G4ParticleDefinition::GetPDGCharge(), CLHEP::HepLorentzVector::getT(), G4HadProjectile::GetTotalEnergy(), G4Nucleus::GetZ_asInt(), CLHEP::HepLorentzRotation::inverse(), isAlive, python.hepunit::keV, CLHEP::Hep3Vector::mag(), python.hepunit::MeV, CLHEP::HepLorentzRotation::rotateY(), CLHEP::HepLorentzRotation::rotateZ(), G4DynamicParticle::Set4Momentum(), G4HadFinalState::SetEnergyChange(), G4HadFinalState::SetMomentumChange(), G4HadFinalState::SetStatusChange(), CLHEP::HepLorentzVector::setT(), CLHEP::HepLorentzVector::setVect(), stopAndKill, CLHEP::Hep3Vector::unit(), and CLHEP::HepLorentzVector::vect().

{
    if(getenv("BLICDEBUG") ) G4cerr << " ######### Binary Light Ion Reaction starts ######### " << G4endl;
    G4ping debug("debug_G4BinaryLightIonReaction");
    pA=aTrack.GetDefinition()->GetBaryonNumber();
    pZ=G4lrint(aTrack.GetDefinition()->GetPDGCharge()/eplus);
    tA=targetNucleus.GetA_asInt();
    tZ=targetNucleus.GetZ_asInt();

    G4LorentzVector mom(aTrack.Get4Momentum());
   //G4cout << "proj mom : " << mom << G4endl;
    G4LorentzRotation toBreit(mom.boostVector());

    G4bool swapped=SetLighterAsProjectile(mom, toBreit);
   //G4cout << "after swap, swapped? / mom " << swapped << " / " << mom <<G4endl;
    G4ReactionProductVector * result = 0;
    G4ReactionProductVector * cascaders=0; //new G4ReactionProductVector;
//  G4double m_nucl(0);      // to check energy balance


    //    G4double m1=G4ParticleTable::GetParticleTable()->GetIonTable()->GetIonMass(pZ,pA);
    //    G4cout << "Entering the decision point "
    //           << (mom.t()-mom.mag())/pA << " "
    //     << pA<<" "<< pZ<<" "
    //     << tA<<" "<< tZ<<G4endl
    //     << " "<<mom.t()-mom.mag()<<" "
    //     << mom.t()- m1<<G4endl;
    if( (mom.t()-mom.mag())/pA < 50*MeV )
    {
        //      G4cout << "Using pre-compound only, E= "<<mom.t()-mom.mag()<<G4endl;
        //      m_nucl = mom.mag();
      cascaders=FuseNucleiAndPrompound(mom);
      if( !cascaders )
      {

         // abort!! happens for too low energy for nuclei to fuse

         theResult.Clear();
         theResult.SetStatusChange(isAlive);
         theResult.SetEnergyChange(aTrack.GetKineticEnergy());
         theResult.SetMomentumChange(aTrack.Get4Momentum().vect().unit());
         return &theResult;
      }
    }
    else
    {
       result=Interact(mom,toBreit);

      if(! result )
      {
            // abort!!

            G4cerr << "G4BinaryLightIonReaction no final state for: " << G4endl;
            G4cerr << " Primary " << aTrack.GetDefinition()
               << ", (A,Z)=(" << aTrack.GetDefinition()->GetBaryonNumber()
               << "," << aTrack.GetDefinition()->GetPDGCharge()/eplus << ") "
               << ", kinetic energy " << aTrack.GetKineticEnergy()
               << G4endl;
            G4cerr << " Target nucleus (A,Z)=("
                   <<  (swapped?pA:tA)  << ","
                   << (swapped?pZ:tZ) << ")" << G4endl;
            G4cerr << " if frequent, please submit above information as bug report"
                  << G4endl << G4endl;

            theResult.Clear();
            theResult.SetStatusChange(isAlive);
            theResult.SetEnergyChange(aTrack.GetKineticEnergy());
            theResult.SetMomentumChange(aTrack.Get4Momentum().vect().unit());
            return &theResult;
      }

        // Calculate excitation energy,
      G4double theStatisticalExEnergy = GetProjectileExcitation();


        pInitialState = mom;
        //G4cout << "pInitialState from aTrack : " << pInitialState;
        pInitialState.setT(pInitialState.getT() +
             G4ParticleTable::GetParticleTable()->GetIonTable()->GetIonMass(tZ,tA));
      //G4cout << "target nucleus added : " << pInitialState << G4endl;

        delete target3dNucleus;target3dNucleus=0;
        delete projectile3dNucleus;projectile3dNucleus=0;

      G4ReactionProductVector * spectators= new G4ReactionProductVector;

      cascaders = new G4ReactionProductVector;

      G4LorentzVector pspectators=SortResult(result,spectators,cascaders);

      //      pFinalState=std::accumulate(cascaders->begin(),cascaders->end(),pFinalState,ReactionProduct4Mom);
      std::vector<G4ReactionProduct *>::iterator iter;

      //G4cout << "pInitialState, pFinalState / pspectators"<< pInitialState << " / " << pFinalState << " / " << pspectators << G4endl;
        //      if ( spectA-spectatorA !=0 || spectZ-spectatorZ !=0)
        //      {
        //          G4cout << "spect Nucl != spectators: nucl a,z; spect a,z" <<
        //        spectatorA <<" "<< spectatorZ <<" ; " << spectA <<" "<< spectZ << G4endl;
        //      }
        delete result;
        result=0;
        G4LorentzVector momentum(pInitialState-pFinalState);
        G4int loopcount(0);
        //G4cout << "momentum, pspectators : " << momentum << " / " << pspectators << G4endl;
        while (std::abs(momentum.e()-pspectators.e()) > 10*MeV)
        {
            G4LorentzVector pCorrect(pInitialState-pspectators);
           //G4cout << "BIC nonconservation? (pInitialState-pFinalState) / spectators :" << momentum << " / " << pspectators << "pCorrect "<< pCorrect<< G4endl;
            // Correct outgoing casacde particles.... to have momentum of (initial state - spectators)
            G4bool EnergyIsCorrect=EnergyAndMomentumCorrector(cascaders, pCorrect);
            if ( ! EnergyIsCorrect && debug_G4BinaryLightIonReactionResults)
            {
                G4cout << "Warning - G4BinaryLightIonReaction E/P correction for cascaders failed" << G4endl;
            }
            pFinalState=G4LorentzVector(0,0,0,0);
            for(iter=cascaders->begin(); iter!=cascaders->end(); iter++)
            {
                pFinalState += G4LorentzVector( (*iter)->GetMomentum(), (*iter)->GetTotalEnergy() );
            }
            momentum=pInitialState-pFinalState;
            if (++loopcount > 10 )
            {
                if ( momentum.vect().mag() - momentum.e()> 10*keV  )
                {
                    G4cerr << "G4BinaryLightIonReaction.cc: Cannot correct 4-momentum of cascade particles" << G4endl;
                    throw G4HadronicException(__FILE__, __LINE__, "G4BinaryCasacde::ApplyCollision()");
                } else {
                    break;
                }

            }
        }

    if (spectatorA > 0 )
        {
           // check spectator momentum
           if ( momentum.vect().mag() - momentum.e()> 10*keV )
           {

              for (iter=spectators->begin();iter!=spectators->end();iter++)
              {
                 delete *iter;
              }
              delete spectators;
              for(iter=cascaders->begin(); iter!=cascaders->end(); iter++)
              {
                 delete *iter;
              }
              delete cascaders;

              G4cout << "G4BinaryLightIonReaction.cc: mom check: " <<  momentum
                    << " 3.mag "<< momentum.vect().mag() << G4endl
                    << " .. pInitialState/pFinalState/spectators " << pInitialState <<" "
                    << pFinalState << " " << pspectators << G4endl
                    << " .. A,Z " << spectatorA <<" "<< spectatorZ << G4endl;
              G4cout << "G4BinaryLightIonReaction invalid final state for: " << G4endl;
              G4cout << " Primary " << aTrack.GetDefinition()
                      << ", (A,Z)=(" << aTrack.GetDefinition()->GetBaryonNumber()
                      << "," << aTrack.GetDefinition()->GetPDGCharge()/eplus << ") "
                      << ", kinetic energy " << aTrack.GetKineticEnergy()
                      << G4endl;
              G4cout << " Target nucleus (A,Z)=(" <<  targetNucleus.GetA_asInt()
                          << "," << targetNucleus.GetZ_asInt() << ")" << G4endl;
              G4cout << " if frequent, please submit above information as bug report"
                    << G4endl << G4endl;

              theResult.Clear();
              theResult.SetStatusChange(isAlive);
              theResult.SetEnergyChange(aTrack.GetKineticEnergy());
              theResult.SetMomentumChange(aTrack.Get4Momentum().vect().unit());
              return &theResult;
           }


           DeExciteSpectatorNucleus(spectators, cascaders, theStatisticalExEnergy, momentum);
        } else {
           delete spectators;
        }
    }
    // Rotate to lab
    G4LorentzRotation toZ;
    toZ.rotateZ(-1*mom.phi());
    toZ.rotateY(-1*mom.theta());
    G4LorentzRotation toLab(toZ.inverse());

    // Fill the particle change, while rotating. Boost from projectile breit-frame in case we swapped.
    // theResult.Clear();
    theResult.Clear();
    theResult.SetStatusChange(stopAndKill);
    G4double Etot(0);
    G4ReactionProductVector::iterator iter;
    for(iter=cascaders->begin(); iter!=cascaders->end(); iter++)
    {
        if((*iter)->GetNewlyAdded())
        {
            G4DynamicParticle * aNew =
                    new G4DynamicParticle((*iter)->GetDefinition(),
                            (*iter)->GetTotalEnergy(),
                            (*iter)->GetMomentum() );
            G4LorentzVector tmp = aNew->Get4Momentum();
            if(swapped)
            {
                tmp*=toBreit.inverse();
                tmp.setVect(-tmp.vect());
            }
            tmp *= toLab;
            aNew->Set4Momentum(tmp);
            //G4cout << "result[" << i << "], 4vect: " << tmp << G4endl;
            theResult.AddSecondary(aNew);
            Etot += tmp.e();
            //        G4cout << "LIBIC: Secondary " << aNew->GetDefinition()->GetParticleName()
            //               <<" "<<  aNew->GetMomentum()
            //        <<" "<<  aNew->GetTotalEnergy()
            //        << G4endl;
        }
        delete *iter;
    }
    delete cascaders;

#ifdef debug_BLIR_result
    G4cout << "Result analysis, secondaries" << theResult.GetNumberOfSecondaries() << G4endl;
    G4cout << " Energy conservation initial/primary/nucleus/final/delta(init-final) "
          << aTrack.GetTotalEnergy() + m_nucl << aTrack.GetTotalEnergy() << m_nucl <<Etot
          << aTrack.GetTotalEnergy() + m_nucl - Etot;
#endif

    if(getenv("BLICDEBUG") ) G4cerr << " ######### Binary Light Ion Reaction number ends ######### " << G4endl;

    return &theResult;
}

void G4BinaryLightIonReaction::ModelDescription ( std::ostream &  outFile ) const

virtual

Reimplemented from G4HadronicInteraction.

Definition at line 71 of file G4BinaryLightIonReaction.cc.

{
    outFile << "G4Binary Light Ion Cascade is an intra-nuclear cascade model\n"
            << "using G4BinaryCasacde to model the interaction of a light\n"
            << "nucleus with a nucleus.\n"
            << "The lighter of the two nuclei is treated like a set of projectiles\n"
            << "which are transported simultanously through the heavier nucleus.\n";
}

void G4BinaryLightIonReaction::SetDeExcitation ( G4ExcitationHandler *  ptr )

inline

Definition at line 74 of file G4BinaryLightIonReaction.hh.

References G4VPreCompoundModel::SetExcitationHandler().

{
  theProjectileFragmentation->SetExcitationHandler(ptr);
  theHandler = ptr;
}

void G4BinaryLightIonReaction::SetPrecompound ( G4VPreCompoundModel *  ptr )

inline

Definition at line 69 of file G4BinaryLightIonReaction.hh.

References G4VPreCompoundModel::GetExcitationHandler().

{
  if(ptr) { theProjectileFragmentation = ptr; }
  theHandler = theProjectileFragmentation->GetExcitationHandler();
}

---

The documentation for this class was generated from the following files:

• G4BinaryLightIonReaction.hh
• G4BinaryLightIonReaction.cc