#include <G4GammaNuclearXS.hh>

Inheritance diagram for G4GammaNuclearXS:

Public Member Functions
void	BuildPhysicsTable (const G4ParticleDefinition &) final

G4double	ComputeCrossSection (const G4DynamicParticle , const G4Element , const G4Material *mat=nullptr)

void	CrossSectionDescription (std::ostream &) const final

virtual void	DumpPhysicsTable (const G4ParticleDefinition &)

G4double	ElementCrossSection (G4double ekin, G4int Z)

bool	ForAllAtomsAndEnergies () const

	G4GammaNuclearXS ()

	G4GammaNuclearXS (const G4GammaNuclearXS &)=delete

G4double	GetCrossSection (const G4DynamicParticle , const G4Element , const G4Material *mat=nullptr)

G4double	GetElementCrossSection (const G4DynamicParticle , G4int Z, const G4Material mat=nullptr) final

G4double	GetIsoCrossSection (const G4DynamicParticle , G4int Z, G4int A, const G4Isotope iso=nullptr, const G4Element elm=nullptr, const G4Material mat=nullptr) final

G4double	GetMaxKinEnergy () const

G4double	GetMinKinEnergy () const

const G4String &	GetName () const

virtual G4int	GetVerboseLevel () const

G4bool	IsElementApplicable (const G4DynamicParticle , G4int Z, const G4Material ) final

G4bool	IsIsoApplicable (const G4DynamicParticle , G4int Z, G4int A, const G4Element , const G4Material *mat) final

G4double	IsoCrossSection (G4double ekin, G4int Z, G4int A)

G4GammaNuclearXS &	operator= (const G4GammaNuclearXS &right)=delete

const G4Isotope *	SelectIsotope (const G4Element *, G4double kinEnergy, G4double logE) final

void	SetForAllAtomsAndEnergies (G4bool val)

void	SetMaxKinEnergy (G4double value)

void	SetMinKinEnergy (G4double value)

void	SetName (const G4String &nam)

virtual void	SetVerboseLevel (G4int value)

	~G4GammaNuclearXS () final

Static Public Member Functions
static const char *	Default_Name ()

Protected Attributes
G4String	name

G4int	verboseLevel

Private Member Functions
const G4String &	FindDirectoryPath ()

G4PhysicsVector *	GetPhysicsVector (G4int Z)

void	Initialise (G4int Z)

void	InitialiseOnFly (G4int Z)

G4PhysicsVector *	RetrieveVector (std::ostringstream &in, G4bool isElement, G4int Z)

Private Attributes
const G4int	freeVectorException [11] = {4, 6, 7, 8, 27, 39, 45, 65, 67, 69, 73}

const G4ParticleDefinition *	gamma

G4VCrossSectionDataSet *	ggXsection = nullptr

G4bool	isForAllAtomsAndEnergies

G4bool	isMaster = false

G4double	maxKinEnergy

G4double	minKinEnergy

G4CrossSectionDataSetRegistry *	registry

std::vector< G4double >	temp

Static Private Attributes
static G4double	coeff [3][3]

static G4ElementData *	data = nullptr

static G4String	gDataDirectory = ""

static const G4int	MAXZGAMMAXS = 95

static const G4int	rTransitionBound = 150.*CLHEP::MeV

static G4double	xs150 [MAXZGAMMAXS] = {0.0}

Detailed Description

Definition at line 63 of file G4GammaNuclearXS.hh.

Constructor & Destructor Documentation

◆ G4GammaNuclearXS() [1/2]

G4GammaNuclearXS::G4GammaNuclearXS ( )

explicit

Definition at line 67 of file G4GammaNuclearXS.cc.

  : G4VCrossSectionDataSet(Default_Name()),
   gamma(G4Gamma::Gamma())
{
  //  verboseLevel = 0;
  if(verboseLevel > 0){
    G4cout  << "G4GammaNuclearXS::G4GammaNuclearXS Initialise for Z < " 
        << MAXZGAMMAXS << G4endl;
  }
  ggXsection = G4CrossSectionDataSetRegistry::Instance()->GetCrossSectionDataSet("PhotoNuclearXS");
  if(ggXsection == nullptr) ggXsection = new G4PhotoNuclearCrossSection();
  SetForAllAtomsAndEnergies(true);
}

References G4cout, G4endl, G4CrossSectionDataSetRegistry::GetCrossSectionDataSet(), ggXsection, G4CrossSectionDataSetRegistry::Instance(), MAXZGAMMAXS, G4VCrossSectionDataSet::SetForAllAtomsAndEnergies(), and G4VCrossSectionDataSet::verboseLevel.

◆ ~G4GammaNuclearXS()

G4GammaNuclearXS::~G4GammaNuclearXS ( )

final

Definition at line 81 of file G4GammaNuclearXS.cc.

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

References data, and isMaster.

◆ G4GammaNuclearXS() [2/2]

G4GammaNuclearXS::G4GammaNuclearXS ( const G4GammaNuclearXS & )

delete

Member Function Documentation

◆ BuildPhysicsTable()

void G4GammaNuclearXS::BuildPhysicsTable ( const G4ParticleDefinition & p )

finalvirtual

Reimplemented from G4VCrossSectionDataSet.

Definition at line 282 of file G4GammaNuclearXS.cc.

{
  if(verboseLevel > 0){
    G4cout << "G4GammaNuclearXS::BuildPhysicsTable for " 
       << p.GetParticleName() << G4endl;
  }
  if(p.GetParticleName() != "gamma") { 
    G4ExceptionDescription ed;
    ed << p.GetParticleName() << " is a wrong particle type -"
       << " only gamma is allowed";
    G4Exception("G4GammaNuclearXS::BuildPhysicsTable(..)","had012",
        FatalException, ed, "");
    return; 
  }
 
    if(nullptr == data) { 
#ifdef G4MULTITHREADED
    G4MUTEXLOCK(&gNuclearXSMutex);
    if(nullptr == data) { 
#endif
      isMaster = true;
      data = new G4ElementData(); 
      data->SetName("PhotoNuclear");
      FindDirectoryPath();
#ifdef G4MULTITHREADED
    }
    G4MUTEXUNLOCK(&gNuclearXSMutex);
#endif
  }
    
 
  // it is possible re-initialisation for the second run
  // Upload data for elements used in geometry
  const G4ElementTable* table = G4Element::GetElementTable();
  if(isMaster) {
    for ( auto & elm : *table ) {
      G4int Z = std::max( 1, std::min( elm->GetZasInt(), MAXZGAMMAXS-1) );
      if ( nullptr == data->GetElementData(Z) ) { Initialise(Z); }
    }
  }
 
    // prepare isotope selection
  size_t nIso = temp.size();
  for ( auto & elm : *table ) {
    size_t n = elm->GetNumberOfIsotopes();
    if(n > nIso) { nIso = n; }
  }
  temp.resize(nIso, 0.0);   
}

References data, FatalException, FindDirectoryPath(), G4cout, G4endl, G4Exception(), G4MUTEXLOCK, G4MUTEXUNLOCK, G4ElementData::GetElementData(), G4Element::GetElementTable(), G4ParticleDefinition::GetParticleName(), Initialise(), isMaster, G4INCL::Math::max(), MAXZGAMMAXS, G4INCL::Math::min(), CLHEP::detail::n, G4ElementData::SetName(), temp, G4VCrossSectionDataSet::verboseLevel, and Z.

◆ ComputeCrossSection()

G4double G4VCrossSectionDataSet::ComputeCrossSection	(	const G4DynamicParticle *	part,
		const G4Element *	elm,
		const G4Material *	mat = `nullptr`
	)

inherited

Definition at line 81 of file G4VCrossSectionDataSet.cc.

{
  G4int Z = elm->GetZasInt();
 
  if (IsElementApplicable(part, Z, mat)) { 
    return GetElementCrossSection(part, Z, mat);
  }
 
  // isotope-wise cross section making sum over available
  // isotope cross sections, which may be incomplete, so
  // the result is corrected 
  size_t nIso = elm->GetNumberOfIsotopes();    
  G4double fact = 0.0;
  G4double xsec = 0.0;
 
  // user-defined isotope abundances        
  const G4IsotopeVector* isoVector = elm->GetIsotopeVector();
  const G4double* abundVector = elm->GetRelativeAbundanceVector();
 
  for (size_t j=0; j<nIso; ++j) {
    const G4Isotope* iso = (*isoVector)[j];
    G4int A = iso->GetN();
    if(abundVector[j] > 0.0 && IsIsoApplicable(part, Z, A, elm, mat)) {
      fact += abundVector[j];
      xsec += abundVector[j]*GetIsoCrossSection(part, Z, A, iso, elm, mat);
    }
  }
  return (fact > 0.0) ? xsec/fact : 0.0; 
}

References A, G4VCrossSectionDataSet::GetElementCrossSection(), G4VCrossSectionDataSet::GetIsoCrossSection(), G4Element::GetIsotopeVector(), G4Isotope::GetN(), G4Element::GetNumberOfIsotopes(), G4Element::GetRelativeAbundanceVector(), G4Element::GetZasInt(), G4VCrossSectionDataSet::IsElementApplicable(), G4VCrossSectionDataSet::IsIsoApplicable(), and Z.

Referenced by G4VCrossSectionDataSet::GetCrossSection().

◆ CrossSectionDescription()

void G4GammaNuclearXS::CrossSectionDescription ( std::ostream & outFile ) const

finalvirtual

Reimplemented from G4VCrossSectionDataSet.

Definition at line 89 of file G4GammaNuclearXS.cc.

{
  outFile << "G4GammaNuclearXS calculates the gamma nuclear\n"
          << "cross-section for GDR energy region on nuclei using data from the high precision\n"
          << "IAEA photonuclear database (2019). Then liniear connection\n"
      <<"implemented with previous CHIPS photonuclear model\n";
}

◆ Default_Name()

static const char * G4GammaNuclearXS::Default_Name ( )

inlinestatic

Definition at line 71 of file G4GammaNuclearXS.hh.

71{return "GammaNuclearXS";}

◆ DumpPhysicsTable()

void G4VCrossSectionDataSet::DumpPhysicsTable ( const G4ParticleDefinition & )

virtualinherited

Reimplemented in G4CrossSectionElastic, G4CrossSectionInelastic, G4LENDCrossSection, G4ParticleHPCaptureData, G4ParticleHPElasticData, G4ParticleHPFissionData, G4ParticleHPInelasticData, G4ParticleHPJENDLHEData, G4ParticleHPThermalScatteringData, and G4UPiNuclearCrossSection.

Definition at line 174 of file G4VCrossSectionDataSet.cc.

175{}

◆ ElementCrossSection()

G4double G4GammaNuclearXS::ElementCrossSection	(	G4double	ekin,
		G4int	Z
	)

Definition at line 145 of file G4GammaNuclearXS.cc.

{    
  G4DynamicParticle theGamma(gamma, G4ThreeVector(1,0,0), ekin);
  return GetElementCrossSection(&theGamma, ZZ);
}

References gamma, and GetElementCrossSection().

◆ FindDirectoryPath()

const G4String & G4GammaNuclearXS::FindDirectoryPath ( )

private

Definition at line 332 of file G4GammaNuclearXS.cc.

{
  // check environment variable
  // build the complete string identifying the file with the data set
  if(gDataDirectory.empty()) {
    char* path = std::getenv("G4PARTICLEXSDATA");
    if (nullptr != path) {
      std::ostringstream ost;
      ost << path << "/gamma/inel";
      gDataDirectory = ost.str();
    } else {
      G4Exception("G4GammaNuclearXS::Initialise(..)","had013",
          FatalException,
          "Environment variable G4PARTICLEXSDATA is not defined");
    }
  }
  return gDataDirectory;
}

References FatalException, G4Exception(), and gDataDirectory.

Referenced by BuildPhysicsTable(), and Initialise().

◆ ForAllAtomsAndEnergies()

bool G4VCrossSectionDataSet::ForAllAtomsAndEnergies ( ) const

inlineinherited

Definition at line 230 of file G4VCrossSectionDataSet.hh.

{
  return isForAllAtomsAndEnergies;
}

References G4VCrossSectionDataSet::isForAllAtomsAndEnergies.

Referenced by G4CrossSectionDataStore::AddDataSet().

◆ GetCrossSection()

G4double G4VCrossSectionDataSet::GetCrossSection	(	const G4DynamicParticle *	dp,
		const G4Element *	elm,
		const G4Material *	mat = `nullptr`
	)

inlineinherited

Definition at line 187 of file G4VCrossSectionDataSet.hh.

{
  return ComputeCrossSection(dp, elm, mat);
}

References G4VCrossSectionDataSet::ComputeCrossSection().

◆ GetElementCrossSection()

G4double G4GammaNuclearXS::GetElementCrossSection	(	const G4DynamicParticle *	aParticle,
		G4int	Z,
		const G4Material *	mat = `nullptr`
	)

finalvirtual

Reimplemented from G4VCrossSectionDataSet.

Definition at line 112 of file G4GammaNuclearXS.cc.

{
  const G4int Z = (ZZ >= MAXZGAMMAXS) ? MAXZGAMMAXS - 1 : ZZ;
  auto pv = GetPhysicsVector(Z);
 
  if(pv == nullptr) {
    return ggXsection->GetElementCrossSection(aParticle, Z, mat);
  }
  const G4double emax = pv->GetMaxEnergy();
  const G4double ekin = aParticle->GetKineticEnergy();
  G4double xs = 0.0;
  if(ekin <= emax) {
    xs = pv->Value(ekin);
  } else if(ekin >= rTransitionBound){
    xs = ggXsection->GetElementCrossSection(aParticle, Z, mat);
  } else {
    const G4double rxs = xs150[Z];
    const G4double lxs = pv->Value(emax);
    xs = lxs + (ekin - emax)*(rxs - lxs)/(rTransitionBound-emax);
  }
 
#ifdef G4VERBOSE
  if(verboseLevel > 1) {
    G4cout  << "Z= " << Z << " Ekin(MeV)= " << ekin/CLHEP::MeV 
        << ",  nElmXS(b)= " << xs/CLHEP::barn 
        << G4endl;
  }
#endif
  return xs;
}

References CLHEP::barn, emax, G4cout, G4endl, G4VCrossSectionDataSet::GetElementCrossSection(), G4DynamicParticle::GetKineticEnergy(), GetPhysicsVector(), ggXsection, MAXZGAMMAXS, CLHEP::MeV, rTransitionBound, G4VCrossSectionDataSet::verboseLevel, xs150, and Z.

Referenced by ElementCrossSection().

◆ GetIsoCrossSection()

G4double G4GammaNuclearXS::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 158 of file G4GammaNuclearXS.cc.

{
  const G4int Z = (ZZ >= MAXZGAMMAXS) ? MAXZGAMMAXS - 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 ggXsection->GetIsoCrossSection(aParticle, Z, A);
  }
  const G4double ekin = aParticle->GetKineticEnergy();
  const G4double emax = pv->GetMaxEnergy();
  G4double xs = 0.0;
 
  // compute isotope cross section if applicable
  if(amin[Z] < amax[Z] && A >= amin[Z] && A <= amax[Z] && 
     ekin < rTransitionBound) {
    auto pviso = data->GetComponentDataByIndex(Z, A - amin[Z]);
    // isotope file exists
    if(nullptr != pviso) {
      const G4double emaxiso = pviso->GetMaxEnergy();
      if(ekin <= emaxiso) {
    xs = pviso->Value(ekin);
      } else {
    G4DynamicParticle 
      theGamma(gamma, G4ThreeVector(0,0,1.), rTransitionBound);
    const G4double rxs = ggXsection->GetIsoCrossSection(&theGamma, Z, A);
    const G4double lxs = pviso->Value(emaxiso);
    xs = lxs + (ekin - emaxiso)*(rxs - lxs)/(rTransitionBound-emaxiso);
      }   
#ifdef G4VERBOSE
      if(verboseLevel > 1) {
    G4cout  << "G4GammaNuclearXS::IsoXS: Z= " << Z << " A= " << A 
        << " Ekin(MeV)= " << ekin/CLHEP::MeV 
        << ", ElmXS(b)= " << xs/CLHEP::barn << G4endl;
      }
#endif
      return xs;
    }
  }
 
  // use element x-section
  // for the hydrogen target there is no element data
  if(ekin <= emax && Z != 1) { 
    xs = pv->Value(ekin)*A/aeff[Z];
 
    // CHIPS for high energy and for the hydrogen target
  } else if(ekin >= rTransitionBound || Z == 1) {
    if(Z <= 2 && ekin > 10.*GeV) { 
      xs = coeff[Z][A - amin[Z]]*
    ggXsection->GetElementCrossSection(aParticle, Z, 0);
    } else {
      xs = ggXsection->GetIsoCrossSection(aParticle, Z, A);
    }
 
    // transition GDR to CHIPS
  } else {
    const G4double rxs = xs150[Z];
    const G4double lxs = pv->Value(emax)*A/aeff[Z];
    xs = lxs + (ekin - emax)*(rxs - lxs)/(rTransitionBound-emax);
  }
#ifdef G4VERBOSE
  if(verboseLevel > 1) {
    G4cout  << "G4GammaNuclearXS::IsoXS: Z= " << Z << " A= " << A 
        << " Ekin(MeV)= " << ekin/CLHEP::MeV 
        << ", ElmXS(b)= " << xs/CLHEP::barn << G4endl;
  }
#endif
  return xs;
}

References A, aeff, amax, amin, CLHEP::barn, coeff, data, emax, G4cout, G4endl, gamma, G4ElementData::GetComponentDataByIndex(), G4VCrossSectionDataSet::GetElementCrossSection(), G4VCrossSectionDataSet::GetIsoCrossSection(), G4DynamicParticle::GetKineticEnergy(), G4PhysicsVector::GetMaxEnergy(), GetPhysicsVector(), GeV, ggXsection, MAXZGAMMAXS, CLHEP::MeV, rTransitionBound, G4VCrossSectionDataSet::verboseLevel, xs150, and Z.

Referenced by IsoCrossSection().

◆ GetMaxKinEnergy()

G4double G4VCrossSectionDataSet::GetMaxKinEnergy ( ) const

inlineinherited

Definition at line 220 of file G4VCrossSectionDataSet.hh.

{
  return maxKinEnergy;
}

References G4VCrossSectionDataSet::maxKinEnergy.

Referenced by G4CrossSectionElastic::IsElementApplicable(), G4CrossSectionInelastic::IsElementApplicable(), G4LENDCrossSection::IsIsoApplicable(), G4ParticleHPCaptureData::IsIsoApplicable(), G4ParticleHPElasticData::IsIsoApplicable(), G4ParticleHPFissionData::IsIsoApplicable(), and G4ParticleHPInelasticData::IsIsoApplicable().

◆ GetMinKinEnergy()

G4double G4VCrossSectionDataSet::GetMinKinEnergy ( ) const

inlineinherited

Definition at line 210 of file G4VCrossSectionDataSet.hh.

{
  return minKinEnergy;
}

References G4VCrossSectionDataSet::minKinEnergy.

Referenced by G4CrossSectionElastic::IsElementApplicable(), G4CrossSectionInelastic::IsElementApplicable(), G4LENDCrossSection::IsIsoApplicable(), G4ParticleHPCaptureData::IsIsoApplicable(), G4ParticleHPElasticData::IsIsoApplicable(), G4ParticleHPFissionData::IsIsoApplicable(), and G4ParticleHPInelasticData::IsIsoApplicable().

◆ GetName()

const G4String & G4VCrossSectionDataSet::GetName ( ) const

inlineinherited

Definition at line 225 of file G4VCrossSectionDataSet.hh.

{
  return name;
}

References G4VCrossSectionDataSet::name.

Referenced by G4LENDCrossSection::DumpLENDTargetInfo(), G4LENDCrossSection::DumpPhysicsTable(), G4LENDCrossSection::GetIsoCrossSection(), and G4CrossSectionDataStore::PrintCrossSectionHtml().

◆ GetPhysicsVector()

G4PhysicsVector * G4GammaNuclearXS::GetPhysicsVector ( G4int Z )

inlineprivate

Definition at line 140 of file G4GammaNuclearXS.hh.

{
  G4PhysicsVector* pv = data->GetElementData(Z);
  if(pv == nullptr) { 
    InitialiseOnFly(Z);
    pv = data->GetElementData(Z);
  }
  return pv;
}

References data, G4ElementData::GetElementData(), InitialiseOnFly(), and Z.

Referenced by GetElementCrossSection(), and GetIsoCrossSection().

◆ GetVerboseLevel()

G4int G4VCrossSectionDataSet::GetVerboseLevel ( ) const

inlinevirtualinherited

Reimplemented in G4ParticleHPCaptureData, G4ParticleHPElasticData, G4ParticleHPFissionData, and G4ParticleHPInelasticData.

Definition at line 195 of file G4VCrossSectionDataSet.hh.

{
  return verboseLevel;
}

References G4VCrossSectionDataSet::verboseLevel.

◆ Initialise()

void G4GammaNuclearXS::Initialise ( G4int Z )

private

Definition at line 364 of file G4GammaNuclearXS.cc.

{
  if(nullptr != data->GetElementData(Z)) { return; }
 
  // upload data from file
  std::ostringstream ost;
  ost << FindDirectoryPath() << Z ;
  G4PhysicsVector* v = RetrieveVector(ost, true, Z);
  
  data->InitialiseForElement(Z, v);
  /*
  G4cout << "G4GammaNuclearXS::Initialise for Z= " << Z 
     << " A= " << Amean << "  Amin= " << amin[Z] 
     << "  Amax= " << amax[Z] << G4endl;
  */
  // upload isotope data
  G4DynamicParticle theGamma(gamma, G4ThreeVector(1,0,0), rTransitionBound);
  xs150[Z] = ggXsection->GetElementCrossSection(&theGamma, Z, 0);
  if(amax[Z] > amin[Z]) {
    size_t nmax = (size_t)(amax[Z]-amin[Z]+1);
    data->InitialiseForComponent(Z, nmax);
    for(G4int A=amin[Z]; A<=amax[Z]; ++A) {
      std::ostringstream ost1;
      ost1 << gDataDirectory << Z << "_" << A;
      G4PhysicsVector* v1 = RetrieveVector(ost1, false, Z);
      data->AddComponent(Z, A, v1);
      if(Z<=2){
    theGamma.SetKineticEnergy(10.*GeV);
    G4double sig1 = ggXsection->GetIsoCrossSection(&theGamma, Z, A);
    G4double sig2 = ggXsection->GetElementCrossSection(&theGamma, Z, 0);
    if(sig2 > 0.) coeff[Z][A-amin[Z]]=(sig1/sig2);
    else coeff[Z][A-amin[Z]]=1.;
      }
    }
  }
}

References A, G4ElementData::AddComponent(), amax, amin, coeff, data, FindDirectoryPath(), gamma, gDataDirectory, G4VCrossSectionDataSet::GetElementCrossSection(), G4ElementData::GetElementData(), G4VCrossSectionDataSet::GetIsoCrossSection(), GeV, ggXsection, G4ElementData::InitialiseForComponent(), G4ElementData::InitialiseForElement(), RetrieveVector(), rTransitionBound, G4DynamicParticle::SetKineticEnergy(), xs150, and Z.

Referenced by BuildPhysicsTable(), and InitialiseOnFly().

◆ InitialiseOnFly()

void G4GammaNuclearXS::InitialiseOnFly ( G4int Z )

private

Definition at line 351 of file G4GammaNuclearXS.cc.

{
#ifdef G4MULTITHREADED
   G4MUTEXLOCK(&gNuclearXSMutex);
   if(nullptr == data->GetElementData(Z)) { 
#endif
     Initialise(Z);
#ifdef G4MULTITHREADED
   }
   G4MUTEXUNLOCK(&gNuclearXSMutex);
#endif
}

References data, G4MUTEXLOCK, G4MUTEXUNLOCK, G4ElementData::GetElementData(), Initialise(), and Z.

Referenced by GetPhysicsVector().

◆ IsElementApplicable()

G4bool G4GammaNuclearXS::IsElementApplicable	(	const G4DynamicParticle *	,
		G4int	Z,
		const G4Material *
	)

finalvirtual

Reimplemented from G4VCrossSectionDataSet.

Definition at line 98 of file G4GammaNuclearXS.cc.

{
  return true;
}

◆ IsIsoApplicable()

G4bool G4GammaNuclearXS::IsIsoApplicable	(	const G4DynamicParticle *	,
		G4int	Z,
		G4int	A,
		const G4Element *	,
		const G4Material *	mat
	)

finalvirtual

Reimplemented from G4VCrossSectionDataSet.

Definition at line 104 of file G4GammaNuclearXS.cc.

{
  return true;
}

◆ IsoCrossSection()

G4double G4GammaNuclearXS::IsoCrossSection	(	G4double	ekin,
		G4int	Z,
		G4int	A
	)

Definition at line 152 of file G4GammaNuclearXS.cc.

{
  G4DynamicParticle theGamma(gamma, G4ThreeVector(1,0,0), ekin);
  return GetIsoCrossSection(&theGamma, ZZ, A);
}

References A, gamma, and GetIsoCrossSection().

Referenced by SelectIsotope().

◆ operator=()

G4GammaNuclearXS & G4GammaNuclearXS::operator= ( const G4GammaNuclearXS & right )

delete

◆ RetrieveVector()

G4PhysicsVector * G4GammaNuclearXS::RetrieveVector	(	std::ostringstream &	in,
		G4bool	isElement,
		G4int	Z
	)

private

Definition at line 402 of file G4GammaNuclearXS.cc.

{
  G4PhysicsVector* v = nullptr;
 
  std::ifstream filein(ost.str().c_str());
  if (!filein.is_open()) {
    if(isElement) {
      G4ExceptionDescription ed;
      ed << "Data file <" << ost.str().c_str()
     << "> is not opened!";
      G4Exception("G4GammaNuclearXS::RetrieveVector(..)","had014",
          FatalException, ed, "Check G4PARTICLEXSDATA");
    }
  } else {
    if(verboseLevel > 1) {
      G4cout << "File " << ost.str() 
         << " is opened by G4GammaNuclearXS" << G4endl;
    }
    // retrieve data from DB
    if(std::find(std::begin(freeVectorException), std::end(freeVectorException), Z ) == std::end(freeVectorException) && isElement) {
      v = new G4PhysicsLinearVector();
    } else {
      v = new G4PhysicsVector();
    }
    if(!v->Retrieve(filein, true)) {
      G4ExceptionDescription ed;
      ed << "Data file <" << ost.str().c_str()
     << "> is not retrieved!";
      G4Exception("G4GammaNuclearXS::RetrieveVector(..)","had015",
          FatalException, ed, "Check G4PARTICLEXSDATA");
    }
  }
 return v;
}

References FatalException, freeVectorException, G4cout, G4endl, G4Exception(), G4PhysicsVector::Retrieve(), G4VCrossSectionDataSet::verboseLevel, and Z.

Referenced by Initialise().

◆ SelectIsotope()

const G4Isotope * G4GammaNuclearXS::SelectIsotope	(	const G4Element *	anElement,
		G4double	kinEnergy,
		G4double	logE
	)

finalvirtual

Reimplemented from G4VCrossSectionDataSet.

Definition at line 235 of file G4GammaNuclearXS.cc.

{
  size_t nIso = anElement->GetNumberOfIsotopes();
  const G4Isotope* iso = anElement->GetIsotope(0);
 
  if(1 == nIso) { return iso; }
 
  const G4double* abundVector = anElement->GetRelativeAbundanceVector();
  G4double q = G4UniformRand();
  G4double sum = 0.0;
  size_t j;
  G4int Z = anElement->GetZasInt();
 
  // condition to use only isotope abundance
  if(amax[Z] == amin[Z] || kinEnergy > rTransitionBound || Z >= MAXZGAMMAXS ) {
    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, 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;
}