G4NeutronInelasticXS Class Reference

#include <G4NeutronInelasticXS.hh>

Inheritance diagram for G4NeutronInelasticXS:

Public Member Functions
	G4NeutronInelasticXS ()
	~G4NeutronInelasticXS () final
G4bool	IsElementApplicable (const G4DynamicParticle *, G4int Z, const G4Material *) final
G4bool	IsIsoApplicable (const G4DynamicParticle *, G4int Z, G4int A, const G4Element *, const G4Material *) final
G4double	GetElementCrossSection (const G4DynamicParticle *, G4int Z, const G4Material *) final
G4double	GetIsoCrossSection (const G4DynamicParticle *, G4int Z, G4int A, const G4Isotope *iso, const G4Element *elm, const G4Material *mat) final
const G4Isotope *	SelectIsotope (const G4Element *, G4double kinEnergy, G4double logE) final
void	BuildPhysicsTable (const G4ParticleDefinition &) final
void	CrossSectionDescription (std::ostream &) const final
G4double	IsoCrossSection (G4double ekin, G4double logekin, G4int Z, G4int A)
G4NeutronInelasticXS &	operator= (const G4NeutronInelasticXS &right)=delete
	G4NeutronInelasticXS (const G4NeutronInelasticXS &)=delete
Public Member Functions inherited from G4VCrossSectionDataSet
	G4VCrossSectionDataSet (const G4String &nam="")
virtual	~G4VCrossSectionDataSet ()
virtual G4bool	IsElementApplicable (const G4DynamicParticle *, G4int Z, const G4Material *mat=nullptr)
virtual G4bool	IsIsoApplicable (const G4DynamicParticle *, G4int Z, G4int A, const G4Element *elm=nullptr, const G4Material *mat=nullptr)
G4double	GetCrossSection (const G4DynamicParticle *, const G4Element *, const G4Material *mat=nullptr)
G4double	ComputeCrossSection (const G4DynamicParticle *, const G4Element *, const G4Material *mat=nullptr)
virtual G4double	GetElementCrossSection (const G4DynamicParticle *, G4int Z, const G4Material *mat=nullptr)
virtual G4double	GetIsoCrossSection (const G4DynamicParticle *, G4int Z, G4int A, const G4Isotope *iso=nullptr, const G4Element *elm=nullptr, const G4Material *mat=nullptr)
virtual const G4Isotope *	SelectIsotope (const G4Element *, G4double kinEnergy, G4double logE)
virtual void	BuildPhysicsTable (const G4ParticleDefinition &)
virtual void	DumpPhysicsTable (const G4ParticleDefinition &)
virtual void	CrossSectionDescription (std::ostream &) const
virtual G4int	GetVerboseLevel () const
virtual void	SetVerboseLevel (G4int value)
G4double	GetMinKinEnergy () const
void	SetMinKinEnergy (G4double value)
G4double	GetMaxKinEnergy () const
void	SetMaxKinEnergy (G4double value)
bool	ForAllAtomsAndEnergies () const
void	SetForAllAtomsAndEnergies (G4bool val)
const G4String &	GetName () const

Static Public Member Functions
static const char *	Default_Name ()

Additional Inherited Members
Protected Member Functions inherited from G4VCrossSectionDataSet
void	SetName (const G4String &)
Protected Attributes inherited from G4VCrossSectionDataSet
G4int	verboseLevel

Detailed Description

Definition at line 58 of file G4NeutronInelasticXS.hh.

Constructor & Destructor Documentation

G4NeutronInelasticXS() [1/2]

G4NeutronInelasticXS::G4NeutronInelasticXS ( )

explicit

Definition at line 65 of file G4NeutronInelasticXS.cc.

  : G4VCrossSectionDataSet(Default_Name()),
    neutron(G4Neutron::Neutron())
{
  verboseLevel = 0;
  if(verboseLevel > 0){
    G4cout << "G4NeutronInelasticXS::G4NeutronInelasticXS Initialise for Z < " 
        << MAXZINEL << G4endl;
  }
  ggXsection = G4CrossSectionDataSetRegistry::Instance()->GetComponentCrossSection("Glauber-Gribov");
  if(ggXsection == nullptr) ggXsection = new G4ComponentGGHadronNucleusXsc();
  SetForAllAtomsAndEnergies(true);
  isMaster = false;
  temp.resize(13,0.0);
}

~G4NeutronInelasticXS()

G4NeutronInelasticXS::~G4NeutronInelasticXS ( )

final

Definition at line 81 of file G4NeutronInelasticXS.cc.

{
  if(isMaster) { delete data; data = nullptr; }
}

G4NeutronInelasticXS() [2/2]

G4NeutronInelasticXS::G4NeutronInelasticXS ( const G4NeutronInelasticXS &  )

delete

Member Function Documentation

BuildPhysicsTable()

void G4NeutronInelasticXS::BuildPhysicsTable ( const G4ParticleDefinition &  p )

finalvirtual

Reimplemented from G4VCrossSectionDataSet.

Definition at line 254 of file G4NeutronInelasticXS.cc.

{
  if(verboseLevel > 0) {
    G4cout << "G4NeutronInelasticXS::BuildPhysicsTable for " 
       << p.GetParticleName() << G4endl;
  }
  if(p.GetParticleName() != "neutron") { 
    G4ExceptionDescription ed;
    ed << p.GetParticleName() << " is a wrong particle type -"
       << " only neutron is allowed";
    G4Exception("G4NeutronInelasticXS::BuildPhysicsTable(..)","had012",
        FatalException, ed, "");
    return; 
  }
 
  if(nullptr == data) { 
#ifdef G4MULTITHREADED
    G4MUTEXLOCK(&neutronInelasticXSMutex);
    if(nullptr == data) { 
#endif
      isMaster = true;
      data = new G4ElementData(); 
      data->SetName("NeutronInelastic");
      FindDirectoryPath();
#ifdef G4MULTITHREADED
    }
    G4MUTEXUNLOCK(&neutronInelasticXSMutex);
#endif
  }
 
  // it is possible re-initialisation for the new run
  if(isMaster) {
 
    // Access to elements
    auto theCoupleTable = G4ProductionCutsTable::GetProductionCutsTable();
    size_t numOfCouples = theCoupleTable->GetTableSize();
    for(size_t j=0; j<numOfCouples; ++j) {
      auto mat = theCoupleTable->GetMaterialCutsCouple(j)->GetMaterial();
      auto elmVec = mat->GetElementVector();
      size_t numOfElem = mat->GetNumberOfElements();
      for (size_t ie = 0; ie < numOfElem; ++ie) {
    G4int Z = std::max(1,std::min(((*elmVec)[ie])->GetZasInt(), MAXZINEL-1));
    if(nullptr == data->GetElementData(Z)) { Initialise(Z); }
      }
    }  
  }
}

CrossSectionDescription()

void G4NeutronInelasticXS::CrossSectionDescription ( std::ostream &  outFile ) const

finalvirtual

Reimplemented from G4VCrossSectionDataSet.

Definition at line 86 of file G4NeutronInelasticXS.cc.

{
  outFile << "G4NeutronInelasticXS calculates the neutron inelastic scattering\n"
          << "cross section on nuclei using data from the high precision\n"
          << "neutron database.  These data are simplified and smoothed over\n"
          << "the resonance region in order to reduce CPU time.\n"
          << "For high energy Glauber-Gribov cross section model is used\n";
}

Default_Name()

static const char * G4NeutronInelasticXS::Default_Name ( )

inlinestatic

Definition at line 66 of file G4NeutronInelasticXS.hh.

{return "G4NeutronInelasticXS";}

Referenced by G4INCLXXNeutronBuilder::Build(), and G4NeutronCrossSectionXS::ConstructProcess().

GetElementCrossSection()

G4double G4NeutronInelasticXS::GetElementCrossSection ( const G4DynamicParticle *  aParticle, G4int  Z, const G4Material *    )

finalvirtual

Reimplemented from G4VCrossSectionDataSet.

Definition at line 110 of file G4NeutronInelasticXS.cc.

{
  G4double xs = 0.0;
  G4double ekin = aParticle->GetKineticEnergy();
 
  G4int Z = (ZZ >= MAXZINEL) ? MAXZINEL - 1 : ZZ; 
 
  auto pv = GetPhysicsVector(Z);
  if(pv == nullptr) { return xs; }
  //  G4cout  << "G4NeutronInelasticXS::GetCrossSection e= " << ekin 
  //  << " Z= " << Z << G4endl;
 
  if(ekin <= pv->GetMaxEnergy()) { 
    xs = pv->LogVectorValue(ekin, aParticle->GetLogKineticEnergy()); 
  } else {
    xs = coeff[Z]*ggXsection->GetInelasticElementCrossSection(neutron,
                  ekin, Z, aeff[Z]);
  }
 
#ifdef G4VERBOSE
  if(verboseLevel > 1) {
    G4cout  << "Z= " << Z << " Ekin(MeV)= " << ekin/CLHEP::MeV 
        << ", ElmXSinel(b)= " << xs/CLHEP::barn 
        << G4endl;
  }
#endif
  return xs;
}

GetIsoCrossSection()

G4double G4NeutronInelasticXS::GetIsoCrossSection ( const G4DynamicParticle *  aParticle, G4int  Z, G4int  A, const G4Isotope *  iso, const G4Element *  elm, const G4Material *  mat  )

finalvirtual

Reimplemented from G4VCrossSectionDataSet.

Definition at line 141 of file G4NeutronInelasticXS.cc.

{
  return IsoCrossSection(aParticle->GetKineticEnergy(), 
                         aParticle->GetLogKineticEnergy(), Z, A);
}

IsElementApplicable()

G4bool G4NeutronInelasticXS::IsElementApplicable ( const G4DynamicParticle *  , G4int  Z, const G4Material *    )

finalvirtual

Reimplemented from G4VCrossSectionDataSet.

Definition at line 96 of file G4NeutronInelasticXS.cc.

{
  return true;
}

IsIsoApplicable()

G4bool G4NeutronInelasticXS::IsIsoApplicable ( const G4DynamicParticle *  , G4int  Z, G4int  A, const G4Element *  , const G4Material *    )

finalvirtual

Reimplemented from G4VCrossSectionDataSet.

Definition at line 103 of file G4NeutronInelasticXS.cc.

{
  return true;
}

IsoCrossSection()

G4double G4NeutronInelasticXS::IsoCrossSection	(	G4double	ekin,
		G4double	logekin,
		G4int	Z,
		G4int	A
	)

Definition at line 152 of file G4NeutronInelasticXS.cc.

{
  G4double xs = 0.0;
  G4int Z = (ZZ >= MAXZINEL) ? MAXZINEL - 1 : ZZ; 
 
  /*
  G4cout << "IsoCrossSection  Z= " << Z << "  A= " << A 
         << "  Amin= " << amin[Z] << " Amax= " << amax[Z]
         << " E(MeV)= " << ekin << G4endl;
  */
  auto pv = GetPhysicsVector(Z);
  if(pv == nullptr) { return xs; }
 
  // compute isotope cross section if applicable
  const G4double emax = pv->GetMaxEnergy(); 
  if(ekin <= emax && amin[Z] > 0 && A >= amin[Z] && A <= amax[Z]) {
    auto pviso = data->GetComponentDataByIndex(Z, A - amin[Z]);
    if(pviso) { 
      xs = pviso->LogVectorValue(ekin, logekin); 
#ifdef G4VERBOSE
      if(verboseLevel > 1) {
    G4cout << "G4NeutronInelasticXS::IsoXS: Ekin(MeV)= " 
               << ekin/CLHEP::MeV 
           << "  xs(b)= " << xs/CLHEP::barn 
           << "  Z= " << Z << "  A= " << A << G4endl;
      }
#endif
      return xs;
    }
  }
 
  // use element x-section
  if(ekin <= emax) { 
    xs = pv->LogVectorValue(ekin, logekin); 
  } else {
    xs = coeff[Z]*ggXsection->GetInelasticElementCrossSection(neutron,
                  ekin, Z, aeff[Z]);
  }
  xs *= A/aeff[Z];
#ifdef G4VERBOSE
  if(verboseLevel > 1) {
    G4cout  << "G4NeutronInelasticXS::IsoXS: Z= " << Z << " A= " << A 
        << " Ekin(MeV)= " << ekin/CLHEP::MeV 
        << ", ElmXS(b)= " << xs/CLHEP::barn << G4endl;
  }
#endif
  return xs;
}

Referenced by GetIsoCrossSection(), and SelectIsotope().

operator=()

G4NeutronInelasticXS & G4NeutronInelasticXS::operator= ( const G4NeutronInelasticXS &  right )

delete

SelectIsotope()

const G4Isotope * G4NeutronInelasticXS::SelectIsotope ( const G4Element *  anElement, G4double  kinEnergy, G4double  logE  )

finalvirtual

Reimplemented from G4VCrossSectionDataSet.

Definition at line 202 of file G4NeutronInelasticXS.cc.

{
  size_t nIso = anElement->GetNumberOfIsotopes();
  const G4Isotope* iso = anElement->GetIsotope(0);
 
  //G4cout << "SelectIsotope NIso= " << nIso << G4endl;
  if(1 == nIso) { return iso; }
 
  // more than 1 isotope
  G4int Z = anElement->GetZasInt();
  //G4cout << "SelectIsotope Z= " << Z << G4endl;
 
  const G4double* abundVector = anElement->GetRelativeAbundanceVector();
  G4double q = G4UniformRand();
  G4double sum = 0.0;
  size_t j;
 
  // isotope wise cross section not available
  if(0 == amin[Z] || Z >= MAXZINEL) {
    for (j=0; j<nIso; ++j) {
      sum += abundVector[j];
      if(q <= sum) {
    iso = anElement->GetIsotope(j);
    break;
      }
    }
    return iso;
  }
 
  // use isotope cross sections
  size_t nn = temp.size();
  if(nn < nIso) { temp.resize(nIso, 0.); }
 
  for (j=0; j<nIso; ++j) {
    //G4cout << j << "-th isotope " << (*isoVector)[j]->GetN() 
    //       <<  " abund= " << abundVector[j] << G4endl;
    sum += abundVector[j]*IsoCrossSection(kinEnergy, logE, Z, 
                      anElement->GetIsotope(j)->GetN());
    temp[j] = sum;
  }
  sum *= q;
  for (j = 0; j<nIso; ++j) {
    if(temp[j] >= sum) {
      iso = anElement->GetIsotope(j);
      break;
    }
  }
  return iso;
}

---

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

• G4NeutronInelasticXS.hh
• G4NeutronInelasticXS.cc