G4ParticleInelasticXS Class Reference

#include <G4ParticleInelasticXS.hh>

Inheritance diagram for G4ParticleInelasticXS:

Public Member Functions
	G4ParticleInelasticXS (const G4ParticleDefinition *)
	~G4ParticleInelasticXS () override=default
G4bool	IsElementApplicable (const G4DynamicParticle *, G4int Z, const G4Material *mat=nullptr) final
G4bool	IsIsoApplicable (const G4DynamicParticle *, G4int Z, G4int A, const G4Element *elm=nullptr, const G4Material *mat=nullptr) final
G4double	GetElementCrossSection (const G4DynamicParticle *, G4int Z, const G4Material *mat=nullptr) final
G4double	ComputeCrossSectionPerElement (G4double kinEnergy, G4double loge, const G4ParticleDefinition *, const G4Element *, const G4Material *) final
G4double	ComputeIsoCrossSection (G4double kinEnergy, G4double loge, const G4ParticleDefinition *, G4int Z, G4int A, const G4Isotope *iso, const G4Element *elm, const G4Material *mat) final
G4double	GetIsoCrossSection (const G4DynamicParticle *, G4int Z, G4int A, const G4Isotope *iso=nullptr, const G4Element *elm=nullptr, const G4Material *mat=nullptr) final
const G4Isotope *	SelectIsotope (const G4Element *, G4double kinEnergy, G4double logE) final
void	BuildPhysicsTable (const G4ParticleDefinition &) final
void	CrossSectionDescription (std::ostream &) const final
G4double	ElementCrossSection (G4double kinEnergy, G4double loge, G4int Z)
G4double	IsoCrossSection (G4double ekin, G4double logE, G4int Z, G4int A)
G4ParticleInelasticXS &	operator= (const G4ParticleInelasticXS &right)=delete
	G4ParticleInelasticXS (const G4ParticleInelasticXS &)=delete
Public Member Functions inherited from G4VCrossSectionDataSet
	G4VCrossSectionDataSet (const G4String &nam="")
virtual	~G4VCrossSectionDataSet ()
G4double	GetCrossSection (const G4DynamicParticle *, const G4Element *, const G4Material *mat=nullptr)
G4double	ComputeCrossSection (const G4DynamicParticle *, const G4Element *, const G4Material *mat=nullptr)
virtual void	DumpPhysicsTable (const G4ParticleDefinition &)
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
void	SetName (const G4String &nam)
G4VCrossSectionDataSet &	operator= (const G4VCrossSectionDataSet &right)=delete
	G4VCrossSectionDataSet (const G4VCrossSectionDataSet &)=delete

Additional Inherited Members
Protected Attributes inherited from G4VCrossSectionDataSet
G4int	verboseLevel
G4String	name

Detailed Description

Definition at line 56 of file G4ParticleInelasticXS.hh.

Constructor & Destructor Documentation

G4ParticleInelasticXS() [1/2]

G4ParticleInelasticXS::G4ParticleInelasticXS ( const G4ParticleDefinition * part )

explicit

Definition at line 72 of file G4ParticleInelasticXS.cc.

  : G4VCrossSectionDataSet("G4ParticleInelasticXS"),
    particle(part),
    elimit(20*CLHEP::MeV)
{
  if(nullptr == part) {
    G4Exception("G4ParticleInelasticXS::G4ParticleInelasticXS(..)","had015",
        FatalException, "NO particle definition in constructor");
  } else {
    verboseLevel = 0;
    const G4String& particleName = particle->GetParticleName();
    if(verboseLevel > 1) {
      G4cout << "G4ParticleInelasticXS::G4ParticleInelasticXS for " 
         << particleName << " on atoms with Z < " << MAXZINELP << G4endl;
    }
    auto xsr = G4CrossSectionDataSetRegistry::Instance();
    if(particleName == "proton") {
      highEnergyXsection = xsr->GetComponentCrossSection("Glauber-Gribov");
      if(highEnergyXsection == nullptr) {
    highEnergyXsection = new G4ComponentGGHadronNucleusXsc();
      }
    } else {
      highEnergyXsection = 
        xsr->GetComponentCrossSection("Glauber-Gribov Nucl-nucl");
      if(highEnergyXsection == nullptr) {
    highEnergyXsection = new G4ComponentGGNuclNuclXsc();
      }
      for (index=1; index<5; ++index) {
        if (particleName == pname[index]) { break; }
      }
      if (index == 5) {
        G4ExceptionDescription ed;
        ed << particleName << " is a wrong particle type";
    G4Exception("G4ParticleInelasticXS::BuildPhysicsTable(..)","had012",
            FatalException, ed, "");
      }
      if (1 < index) { SetMaxKinEnergy(25.6*CLHEP::PeV); }
    }
  }
  SetForAllAtomsAndEnergies(true);
  if (data[0] == nullptr) {
    for (G4int i=0; i<5; ++i) { 
      data[i] = new G4ElementData(MAXZINELP);
      data[i]->SetName(pname[i] + "IonInel");
    }
    FindDirectoryPath();
  }
}

~G4ParticleInelasticXS()

G4ParticleInelasticXS::~G4ParticleInelasticXS ( )

overridedefault

G4ParticleInelasticXS() [2/2]

G4ParticleInelasticXS::G4ParticleInelasticXS ( const G4ParticleInelasticXS & )

delete

Member Function Documentation

BuildPhysicsTable()

void G4ParticleInelasticXS::BuildPhysicsTable ( const G4ParticleDefinition & p )

finalvirtual

Reimplemented from G4VCrossSectionDataSet.

Definition at line 291 of file G4ParticleInelasticXS.cc.

{
  if (verboseLevel > 0){
    G4cout << "G4ParticleInelasticXS::BuildPhysicsTable for " 
       << p.GetParticleName() << G4endl;
  }
  if (&p != particle) { 
    G4ExceptionDescription ed;
    ed << p.GetParticleName() << " is a wrong particle type -"
       << particle->GetParticleName() << " is expected";
    G4Exception("G4ParticleInelasticXS::BuildPhysicsTable(..)","had012",
        FatalException, ed, "");
    return; 
  }
 
  // it is possible re-initialisation for the new run
  const G4ElementTable* table = G4Element::GetElementTable();
 
  // initialise static tables only once
  std::call_once(applyOnce, [this]() { isInitializer = true; });
 
  if (isInitializer) {
    G4AutoLock l(&pInelasticXSMutex);
 
    // Access to elements
    for ( auto const & elm : *table ) {
      G4int Z = std::max( 1, std::min( elm->GetZasInt(), MAXZINELP-1) );
      for (G4int i=0; i<5; ++i) { 
    if ( nullptr == (data[i])->GetElementData(Z) ) { Initialise(Z, i); }
      }
    }
    l.unlock();
  }
  // prepare isotope selection
  std::size_t nIso = temp.size();
  for ( auto const & elm : *table ) {
    std::size_t n = elm->GetNumberOfIsotopes();
    if (n > nIso) { nIso = n; }
  }
  temp.resize(nIso, 0.0);
}

ComputeCrossSectionPerElement()

G4double G4ParticleInelasticXS::ComputeCrossSectionPerElement ( G4double kinEnergy, G4double loge, const G4ParticleDefinition * , const G4Element * elm, const G4Material *  )

finalvirtual

Reimplemented from G4VCrossSectionDataSet.

Definition at line 154 of file G4ParticleInelasticXS.cc.

{
  return ElementCrossSection(ekin, loge, elm->GetZasInt());
}

ComputeIsoCrossSection()

G4double G4ParticleInelasticXS::ComputeIsoCrossSection ( G4double kinEnergy, G4double loge, const G4ParticleDefinition * , G4int Z, G4int A, const G4Isotope * iso, const G4Element * elm, const G4Material * mat )

finalvirtual

Reimplemented from G4VCrossSectionDataSet.

Definition at line 183 of file G4ParticleInelasticXS.cc.

{
  return IsoCrossSection(ekin, loge, Z, A); 
}

CrossSectionDescription()

void G4ParticleInelasticXS::CrossSectionDescription ( std::ostream & outFile ) const

finalvirtual

Reimplemented from G4VCrossSectionDataSet.

Definition at line 121 of file G4ParticleInelasticXS.cc.

{
  outFile << "G4ParticleInelasticXS calculates n, p, d, t, he3, he4 inelastic\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";
}

ElementCrossSection()

G4double G4ParticleInelasticXS::ElementCrossSection	(	G4double	kinEnergy,
		G4double	loge,
		G4int	Z )

Definition at line 162 of file G4ParticleInelasticXS.cc.

{
  G4int Z = (ZZ >= MAXZINELP) ? MAXZINELP - 1 : ZZ; 
  auto pv = GetPhysicsVector(Z);
 
  G4double xs = (ekin <= pv->GetMaxEnergy()) ? pv->LogVectorValue(ekin, loge) 
    : coeff[Z][index]*highEnergyXsection->GetInelasticElementCrossSection(particle,
                    ekin, Z, aeff[Z]);
 
#ifdef G4VERBOSE
  if(verboseLevel > 1) {
    G4cout  << "ElmXS: Z= " << Z << " Ekin(MeV)= " << ekin/CLHEP::MeV 
        << " xs(bn)= " << xs/CLHEP::barn << " element data for "
        << particle->GetParticleName()
            << " idx= " << index << G4endl;
  }
#endif
  return xs;
}

Referenced by ComputeCrossSectionPerElement(), and GetElementCrossSection().

GetElementCrossSection()

G4double G4ParticleInelasticXS::GetElementCrossSection ( const G4DynamicParticle * aParticle, G4int Z, const G4Material * mat = nullptr )

finalvirtual

Reimplemented from G4VCrossSectionDataSet.

Definition at line 146 of file G4ParticleInelasticXS.cc.

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

GetIsoCrossSection()

G4double G4ParticleInelasticXS::GetIsoCrossSection ( const G4DynamicParticle * aParticle, G4int Z, G4int A, const G4Isotope * iso = nullptr, const G4Element * elm = nullptr, const G4Material * mat = nullptr )

finalvirtual

Reimplemented from G4VCrossSectionDataSet.

Definition at line 192 of file G4ParticleInelasticXS.cc.

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

IsElementApplicable()

G4bool G4ParticleInelasticXS::IsElementApplicable ( const G4DynamicParticle * , G4int Z, const G4Material * mat = nullptr )

finalvirtual

Reimplemented from G4VCrossSectionDataSet.

Definition at line 131 of file G4ParticleInelasticXS.cc.

{
  return true;
}

IsIsoApplicable()

G4bool G4ParticleInelasticXS::IsIsoApplicable ( const G4DynamicParticle * , G4int Z, G4int A, const G4Element * elm = nullptr, const G4Material * mat = nullptr )

finalvirtual

Reimplemented from G4VCrossSectionDataSet.

Definition at line 138 of file G4ParticleInelasticXS.cc.

{
  return true;
}

IsoCrossSection()

G4double G4ParticleInelasticXS::IsoCrossSection	(	G4double	ekin,
		G4double	logE,
		G4int	Z,
		G4int	A )

Definition at line 201 of file G4ParticleInelasticXS.cc.

{
  G4double xs = 0.0;
  G4int Z = (ZZ >= MAXZINELP) ? MAXZINELP - 1 : ZZ; 
  auto pv = GetPhysicsVector(Z);
 
  // compute isotope cross section if applicable 
  if (ekin <= elimit && data[index]->GetNumberOfComponents(Z) > 0) {
    auto pviso = data[index]->GetComponentDataByID(Z, A);
    if(pviso != nullptr) { 
      xs = pviso->LogVectorValue(ekin, logE);
#ifdef G4VERBOSE
      if(verboseLevel > 1) {
    G4cout << "G4ParticleInelasticXS::IsoXS: for " 
               << particle->GetParticleName() << " Ekin(MeV)= " 
               << ekin/CLHEP::MeV << "  xs(b)= " << xs/CLHEP::barn 
           << "  Z= " << Z << "  A= " << A 
               << " idx= " << index << G4endl;
      }
#endif
      return xs;
    }
  }
  // use element x-section
  xs = (ekin <= pv->GetMaxEnergy()) ? pv->LogVectorValue(ekin, logE) 
    : coeff[Z][index] *
      highEnergyXsection->GetInelasticElementCrossSection(particle,
              ekin, Z, aeff[Z]);
  xs *= A/aeff[Z];
#ifdef G4VERBOSE
  if(verboseLevel > 1) {
    G4cout  << "IsoXS for " << particle->GetParticleName() 
        << " Target Z= " << Z << " A= " << A 
        << " Ekin(MeV)= " << ekin/CLHEP::MeV 
        << " xs(bn)= " << xs/CLHEP::barn
            << " idx= " << index << G4endl;
  }
#endif
  return xs;
}

Referenced by ComputeIsoCrossSection(), GetIsoCrossSection(), and SelectIsotope().

operator=()

G4ParticleInelasticXS & G4ParticleInelasticXS::operator= ( const G4ParticleInelasticXS & right )

delete

SelectIsotope()

const G4Isotope * G4ParticleInelasticXS::SelectIsotope ( const G4Element * anElement, G4double kinEnergy, G4double logE )

finalvirtual

Reimplemented from G4VCrossSectionDataSet.

Definition at line 243 of file G4ParticleInelasticXS.cc.

{
  G4int nIso = (G4int)anElement->GetNumberOfIsotopes();
  const G4Isotope* iso = anElement->GetIsotope(0);
 
  if (1 == nIso) { return iso; }
 
  // more than 1 isotope
  G4int Z = anElement->GetZasInt();
  if (nullptr == data[index]->GetElementData(Z)) { InitialiseOnFly(Z); }
 
  const G4double* abundVector = anElement->GetRelativeAbundanceVector();
  G4double q = G4UniformRand();
  G4double sum = 0.0;
  G4int j;
 
  // isotope wise cross section not available
  if (Z >= MAXZINELP || 0 == data[index]->GetNumberOfComponents(Z)) {
    for (j=0; j<nIso; ++j) {
      sum += abundVector[j];
      if(q <= sum) {
    iso = anElement->GetIsotope(j);
    break;
      }
    }
    return iso;
  }
 
  G4int nn = (G4int)temp.size();
  if (nn < nIso) { temp.resize(nIso, 0.); }
 
  for (j=0; j<nIso; ++j) {
    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:

• G4ParticleInelasticXS.hh
• G4ParticleInelasticXS.cc