#include <G4NeutronRadCaptureHP.hh>

Inheritance diagram for G4NeutronRadCaptureHP:

Public Member Functions
	G4NeutronRadCaptureHP ()

	~G4NeutronRadCaptureHP () override

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

void	BuildPhysicsTable (const G4ParticleDefinition &) override

G4NeutronRadCaptureHP &	operator= (const G4NeutronRadCaptureHP &right)=delete

	G4NeutronRadCaptureHP (const G4NeutronRadCaptureHP &)=delete

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 &aTrack, G4Nucleus &targetNucleus)

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)

G4int	GetVerboseLevel () const

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

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

virtual void	InitialiseModel ()

	G4HadronicInteraction (const G4HadronicInteraction &right)=delete

const G4HadronicInteraction &	operator= (const G4HadronicInteraction &right)=delete

G4bool	operator== (const G4HadronicInteraction &right) const =delete

G4bool	operator!= (const G4HadronicInteraction &right) const =delete

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 54 of file G4NeutronRadCaptureHP.hh.

Constructor & Destructor Documentation

◆ G4NeutronRadCaptureHP() [1/2]

G4NeutronRadCaptureHP::G4NeutronRadCaptureHP ( )

Definition at line 60 of file G4NeutronRadCaptureHP.cc.

  : G4HadronicInteraction("nRadCaptureHP"),
    electron(G4Electron::Electron()),
    fManagerHP(G4ParticleHPManager::GetInstance()),
    lowestEnergyLimit(1.0e-11*CLHEP::eV),
    minExcitation(0.1*CLHEP::keV),
    emax(20*CLHEP::MeV),
    emaxT(fManagerHP->GetMaxEnergyDoppler()),
    lab4mom(0.,0.,0.,0.)
{
  SetMaxEnergy( G4HadronicParameters::Instance()->GetMaxEnergy() );
  theTableOfIons = G4ParticleTable::GetParticleTable()->GetIonTable();
}

◆ ~G4NeutronRadCaptureHP()

G4NeutronRadCaptureHP::~G4NeutronRadCaptureHP ( )

override

Definition at line 74 of file G4NeutronRadCaptureHP.cc.

{
  if (fLocalPE) { delete photonEvaporation; }
}

◆ G4NeutronRadCaptureHP() [2/2]

G4NeutronRadCaptureHP::G4NeutronRadCaptureHP ( const G4NeutronRadCaptureHP & )

delete

Member Function Documentation

◆ ApplyYourself()

G4HadFinalState * G4NeutronRadCaptureHP::ApplyYourself	(	const G4HadProjectile &	aTrack,
		G4Nucleus &	targetNucleus )

overridevirtual

Reimplemented from G4HadronicInteraction.

Definition at line 103 of file G4NeutronRadCaptureHP.cc.

{
  theParticleChange.Clear();
  G4double ekin = aTrack.GetKineticEnergy();
  if (ekin > emax) {
    return &theParticleChange;
  }
 
  theParticleChange.SetStatusChange(stopAndKill);
  G4double T = aTrack.GetMaterial()->GetTemperature();
 
  G4int A = theNucleus.GetA_asInt();
  G4int Z = theNucleus.GetZ_asInt();
 
  G4double time = aTrack.GetGlobalTime();
 
  // Create initial state
  G4double mass = G4NucleiProperties::GetNuclearMass(A, Z);
 
  // no Doppler broading
  G4double factT = T/CLHEP::STP_Temperature; 
 
  if (ekin >= emaxT*factT || fManagerHP->GetNeglectDoppler()) {
    lab4mom.set(0.,0.,0.,mass);
  } else {
    G4double lambda = 1.0/(CLHEP::k_Boltzmann*T);
    G4double erand = G4RandGamma::shoot(2.0, lambda);
    auto mom = G4RandomDirection()*std::sqrt(2*mass*erand);
    lab4mom.set(mom.x(), mom.y(), mom.z(), mass + erand);
  }
 
  lab4mom += aTrack.Get4Momentum();
 
  G4double M = lab4mom.mag();
  ++A;
  mass = G4NucleiProperties::GetNuclearMass(A, Z);
  //G4cout << "Capture start: Z= " << Z << " A= " << A 
  //     << " LabM= " << M << " Mcompound= " << mass << G4endl;
 
  // simplified method of 1 gamma emission
  if (A <= 4) {
 
    if (verboseLevel > 1) {
      G4cout << "G4NeutronRadCaptureHP::DoIt: Eini(MeV)=" 
         << ekin/MeV << "  Eexc(MeV)= " 
         << (M - mass)/MeV 
         << "  Z= " << Z << "  A= " << A << G4endl;
    }
    if (M - mass > lowestEnergyLimit) {
      G4ThreeVector bst = lab4mom.boostVector();
      G4double e1 = (M - mass)*(M + mass)/(2*M);
      G4LorentzVector lv2(e1*G4RandomDirection(),e1);
      lv2.boost(bst);
      if (verboseLevel > 1) {
        G4cout << "Gamma 4-mom: " << lv2 << " Escm(MeV)=" << e1/CLHEP::MeV << G4endl;
      }
      lab4mom -= lv2; 
      G4HadSecondary* news = 
    new G4HadSecondary(new G4DynamicParticle(G4Gamma::Gamma(), lv2));
      news->SetTime(time);
      news->SetCreatorModelID(secID);
      theParticleChange.AddSecondary(*news);
      delete news;
    }
 
    const G4ParticleDefinition* theDef = nullptr;
 
    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, 0.0, noFloat, 0); }
 
    if (nullptr != theDef) {
      G4HadSecondary* news =
        new G4HadSecondary(new G4DynamicParticle(theDef, lab4mom));
      news->SetTime(time);
      news->SetCreatorModelID(secID);
      theParticleChange.AddSecondary(*news);
      delete news;
    }
 
  // Use photon evaporation  
  } else {
 
    // protection against wrong kinematic 
    if (M < mass) {
      G4double etot = std::max(mass, lab4mom.e());
      G4double ptot = std::sqrt((etot - mass)*(etot + mass));
      G4ThreeVector v = lab4mom.vect().unit();
      lab4mom.set(v.x()*ptot,v.y()*ptot,v.z()*ptot,etot);
    }
 
    G4Fragment* aFragment = new G4Fragment(A, Z, lab4mom);
 
    if (verboseLevel > 1) {
      G4cout << "G4NeutronRadCaptureHP::ApplyYourself initial G4Fragmet:" 
         << G4endl;
      G4cout << aFragment << G4endl;
    }
 
    //
    // Sample final state
    //
    G4FragmentVector* fv = photonEvaporation->BreakUpFragment(aFragment);
    if (nullptr == fv) { fv = new G4FragmentVector(); }
    fv->push_back(aFragment);
 
    if (verboseLevel > 1) {
      G4cout << "G4NeutronRadCaptureHP: " << fv->size() << " final particle icID= "
         << icID << G4endl;
    }
    for (auto const & f : *fv) {
      G4double etot = f->GetMomentum().e();
 
      Z = f->GetZ_asInt();
      A = f->GetA_asInt();
 
      const G4ParticleDefinition* theDef;
      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();
    if (eexc <= minExcitation) { eexc = 0.0; }
    theDef = theTableOfIons->GetIon(Z, A, eexc, noFloat, 0);
    /*  
    G4cout << "### NC Find ion Z= " << Z << " A= " << A
           << " Eexc(MeV)= " << eexc/MeV << "  " 
           << theDef << G4endl;
    */
      }
      ekin = std::max(0.0, etot - theDef->GetPDGMass());
      if (verboseLevel > 1) {
    G4cout << theDef->GetParticleName()
           << " Ekin(MeV)= " << ekin/MeV
           << " p: " << f->GetMomentum().vect() 
           << G4endl;
      }
      G4HadSecondary* news =
        new G4HadSecondary(new G4DynamicParticle(theDef,
                                                 f->GetMomentum().vect().unit(),
                                                 ekin));
      G4double timeF = std::max(f->GetCreationTime(), 0.0);
      news->SetTime(time + timeF);
      if (theDef == electron) { 
        news->SetCreatorModelID(icID); 
      } else {
        news->SetCreatorModelID(secID);
      }
      theParticleChange.AddSecondary(*news);
      delete news;
      delete f;
    }
    delete fv;
  }
  //G4cout << "Capture done" << G4endl;
  return &theParticleChange;
}

◆ BuildPhysicsTable()

void G4NeutronRadCaptureHP::BuildPhysicsTable ( const G4ParticleDefinition & )

overridevirtual

Reimplemented from G4HadronicInteraction.

Definition at line 79 of file G4NeutronRadCaptureHP.cc.

{
  if (photonEvaporation != nullptr) { return; }
  G4HadronicInteraction* p =
    G4HadronicInteractionRegistry::Instance()->FindModel("PRECO");
  if (nullptr != p) {
    auto handler =
      (static_cast<G4VPreCompoundModel*>(p))->GetExcitationHandler();
    if (nullptr != handler)
      photonEvaporation = handler->GetPhotonEvaporation();
  }
  G4DeexPrecoParameters* param = 
    G4NuclearLevelData::GetInstance()->GetParameters();
  minExcitation = param->GetMinExcitation();
  icID = G4PhysicsModelCatalog::GetModelID("model_e-InternalConversion");
  secID = G4PhysicsModelCatalog::GetModelID("model_" + GetModelName());
  if (nullptr == photonEvaporation) {
    photonEvaporation = new G4PhotonEvaporation();
    fLocalPE = true;
  }
  photonEvaporation->Initialise();
  photonEvaporation->SetICM(true);
}

◆ operator=()

G4NeutronRadCaptureHP & G4NeutronRadCaptureHP::operator= ( const G4NeutronRadCaptureHP & right )