#include <G4NeutronRadCapture.hh>

Inheritance diagram for G4NeutronRadCapture:

Public Member Functions
	G4NeutronRadCapture ()

virtual	~G4NeutronRadCapture ()

G4HadFinalState *	ApplyYourself (const G4HadProjectile &aTrack, G4Nucleus &targetNucleus)

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)

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

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 51 of file G4NeutronRadCapture.hh.

Constructor & Destructor Documentation

G4NeutronRadCapture::G4NeutronRadCapture ( )

Definition at line 53 of file G4NeutronRadCapture.cc.

References python.hepunit::eV, G4ParticleTable::GetIonTable(), G4ParticleTable::GetParticleTable(), python.hepunit::GeV, python.hepunit::keV, G4HadronicInteraction::SetMaxEnergy(), G4HadronicInteraction::SetMinEnergy(), and python.hepunit::TeV.

   : G4HadronicInteraction("nRadCapture")
 {
   lowestEnergyLimit = 0.1*eV;
   minExcitation = 1*keV;
   SetMinEnergy( 0.0*GeV );
   SetMaxEnergy( 100.*TeV );
   photonEvaporation = new G4PhotonEvaporation();
   //photonEvaporation = 0;
   theTableOfIons = G4ParticleTable::GetParticleTable()->GetIonTable();
 }

G4NeutronRadCapture::~G4NeutronRadCapture ( )

virtual

Definition at line 65 of file G4NeutronRadCapture.cc.

 {
   delete photonEvaporation;
 }

Member Function Documentation

G4HadFinalState * G4NeutronRadCapture::ApplyYourself	(	const G4HadProjectile &	aTrack,
		G4Nucleus &	targetNucleus
	)

virtual

Implements G4HadronicInteraction.

Definition at line 70 of file G4NeutronRadCapture.cc.

References G4HadFinalState::AddSecondary(), G4Alpha::Alpha(), CLHEP::HepLorentzVector::boost(), CLHEP::HepLorentzVector::boostVector(), G4PhotonEvaporation::BreakUpFragment(), G4HadFinalState::Clear(), G4Deuteron::Deuteron(), CLHEP::HepLorentzVector::e(), G4cout, G4endl, G4UniformRand, G4Gamma::Gamma(), G4HadProjectile::Get4Momentum(), G4Fragment::GetA_asInt(), G4Nucleus::GetA_asInt(), G4Fragment::GetCreationTime(), G4Ions::GetExcitationEnergy(), G4Fragment::GetExcitationEnergy(), G4HadProjectile::GetGlobalTime(), G4IonTable::GetIon(), G4HadProjectile::GetKineticEnergy(), G4Fragment::GetMomentum(), G4NucleiProperties::GetNuclearMass(), G4Fragment::GetParticleDefinition(), G4ParticleDefinition::GetParticleName(), G4ParticleDefinition::GetPDGMass(), G4Fragment::GetZ_asInt(), G4Nucleus::GetZ_asInt(), G4He3::He3(), CLHEP::HepLorentzVector::mag(), python.hepunit::MeV, n, G4HadFinalState::SetStatusChange(), G4HadSecondary::SetTime(), stopAndKill, G4HadronicInteraction::theParticleChange, G4Triton::Triton(), CLHEP::Hep3Vector::unit(), CLHEP::HepLorentzVector::vect(), and G4HadronicInteraction::verboseLevel.

 {
   theParticleChange.Clear();
   theParticleChange.SetStatusChange(stopAndKill);
 
   G4int A = theNucleus.GetA_asInt();
   G4int Z = theNucleus.GetZ_asInt();
 
   G4double time = aTrack.GetGlobalTime();
 
   // Create initial state
   G4double m1 = G4NucleiProperties::GetNuclearMass(A, Z);
   G4LorentzVector lv0(0.0,0.0,0.0,m1);   
   G4LorentzVector lv1 = aTrack.Get4Momentum() + lv0;
 
   // simplified method of 1 gamma emission
   if(A <= 3) {
 
     G4ThreeVector bst = lv1.boostVector();
     G4double M  = lv1.mag();
 
     ++A;
     G4double mass = G4NucleiProperties::GetNuclearMass(A, Z);
     if(M - mass <= lowestEnergyLimit) {
       return &theParticleChange;
     }
  
     if (verboseLevel > 1) {
       G4cout << "G4NeutronRadCapture::DoIt: Eini(MeV)=" 
          << aTrack.GetKineticEnergy()/MeV << "  Eexc(MeV)= " 
          << (M - mass)/MeV 
          << "  Z= " << Z << "  A= " << A << G4endl;
     }
     G4double e1 = (M - mass)*(M + mass)/(2*M);
     G4double cost = 2.0*G4UniformRand() - 1.0;
     if(cost > 1.0) {cost = 1.0;}
     else if(cost < -1.0) {cost = -1.0;}
     G4double sint = std::sqrt((1. - cost)*(1.0 + cost));
     G4double phi  = G4UniformRand()*CLHEP::twopi;
     G4LorentzVector lv2(e1*sint*std::cos(phi),e1*sint*std::sin(phi),e1*cost,e1);
     lv2.boost(bst);
     G4HadSecondary* news = 
       new G4HadSecondary(new G4DynamicParticle(G4Gamma::Gamma(), lv2));
     news->SetTime(time);
     theParticleChange.AddSecondary(*news);
     delete news;
 
     G4ParticleDefinition* theDef = 0;
 
     lv1 -= lv2; 
     if      (Z == 1 && A == 2) {theDef = G4Deuteron::Deuteron();}
     else if (Z == 1 && A == 3) {theDef = G4Triton::Triton();}
     else if (Z == 2 && A == 3) {theDef = G4He3::He3();}
     else if (Z == 2 && A == 4) {theDef = G4Alpha::Alpha();}
     else {  theDef = theTableOfIons->GetIon(Z,A,0); }
 
     if (verboseLevel > 1) {
       G4cout << "Gamma 4-mom: " << lv2 << "   " 
          << theDef->GetParticleName() << "   " << lv1 << G4endl;
     }
     if(theDef) {
       news = new G4HadSecondary(new G4DynamicParticle(theDef, lv1));
       news->SetTime(time);
       theParticleChange.AddSecondary(*news);
       delete news;
     }
  
   // Use photon evaporation  
   } else {
  
     G4Fragment* aFragment = new G4Fragment(A+1, Z, lv1);
 
     if (verboseLevel > 1) {
       G4cout << "G4NeutronRadCapture::ApplyYourself initial G4Fragmet:" << G4endl;
       G4cout << aFragment << G4endl;
     }
 
     //
     // Sample final state
     //
     G4FragmentVector* fv = photonEvaporation->BreakUpFragment(aFragment);
     if(!fv) { fv = new G4FragmentVector(); }
     fv->push_back(aFragment);
     size_t n = fv->size();
 
     if (verboseLevel > 1) {
       G4cout << "G4NeutronRadCapture: " << n << " final particle" << G4endl;
     }
     for(size_t i=0; i<n; ++i) {
 
       G4Fragment* f = (*fv)[i];    
       G4double etot = f->GetMomentum().e();
 
       Z = f->GetZ_asInt();
       A = f->GetA_asInt();
 
       G4ParticleDefinition* theDef = 0;
       if(0 == Z && 0 == A) {theDef =  f->GetParticleDefinition();}
       else if (Z == 1 && A == 2) {theDef = G4Deuteron::Deuteron();}
       else if (Z == 1 && A == 3) {theDef = G4Triton::Triton();}
       else if (Z == 2 && A == 3) {theDef = G4He3::He3();}
       else if (Z == 2 && A == 4) {theDef = G4Alpha::Alpha();}
       else {
         G4double eexc = f->GetExcitationEnergy();
         G4double excitation = eexc;
     G4int level = 0;
     theDef = theTableOfIons->GetIon(Z, A, level);
     /*
     G4cout << "### Find ion Z= " << theFragmentZ << " A= " << theFragmentA
            << " Eexc(MeV)= " << excitation/MeV << "  " 
            << theKindOfFragment << G4endl;
     */
     // production of an isomer
         if(eexc > minExcitation) {
           G4double elevel1 = 0.0;
           G4double elevel2 = 0.0;
       G4ParticleDefinition* ion = 0; 
           for(level=1; level<9; ++level) {
         ion = theTableOfIons->GetIon(Z, A, level);
             //G4cout << level << "  " << ion << G4endl;
             if(ion) {
           G4Ions* ip = dynamic_cast<G4Ions*>(ion);
           if(ip) {
         elevel2 = ip->GetExcitationEnergy();
         //G4cout<<"   Level "<<level<<" E(MeV)= "<<elevel2/MeV<<G4endl;
         // close level
         if(std::fabs(eexc - elevel2) < minExcitation) {
           excitation = eexc - elevel2;
           theDef = ion;
           break;
           // previous level was closer
         } else if(elevel2 - eexc >= eexc - elevel1) {
           excitation = eexc - elevel1;
           break;
           // will check next level and save current
         } else {
           theDef = ion;
           excitation = eexc - elevel2;
           elevel1 = elevel2;
         }
           }
         } else {
           break;
         }
       }
     }
     // correction of total energy for ground state isotopes
     etot += excitation;
         etot -= theDef->GetPDGMass();
         if(etot < 0.0) { etot = 0.0; }
       }
       if (verboseLevel > 1) {
     G4cout << i << ". " << theDef->GetParticleName()
            << " Ekin(MeV)= " << etot/MeV
            << " p: " << f->GetMomentum().vect() 
            << G4endl;
       }
       if(theDef) {
     G4HadSecondary* news = 
       new G4HadSecondary(new G4DynamicParticle(theDef,
                            f->GetMomentum().vect().unit(),
                            etot));
         G4double timeF = f->GetCreationTime();
         if(timeF < 0.0) { timeF = 0.0; }
     news->SetTime(time + timeF);
     theParticleChange.AddSecondary(*news);
     delete news;
       }
       delete f;
     }
     delete fv;
   }
   return &theParticleChange;
 }

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

Public Member Functions

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation