#include <G4BGGPionElasticXS.hh>

Inheritance diagram for G4BGGPionElasticXS:

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 &)

bool	ForAllAtomsAndEnergies () const

	G4BGGPionElasticXS (const G4ParticleDefinition *)

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

G4double	GetElementCrossSection (const G4DynamicParticle , G4int Z, 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

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 elm, const G4Material *mat) final

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

void	SetForAllAtomsAndEnergies (G4bool val)

void	SetMaxKinEnergy (G4double value)

void	SetMinKinEnergy (G4double value)

void	SetName (const G4String &nam)

virtual void	SetVerboseLevel (G4int value)

	~G4BGGPionElasticXS () final

Protected Attributes
G4String	name

G4int	verboseLevel

Private Member Functions
G4double	CoulombFactorPiPlus (G4double kinEnergy, G4int Z)

G4double	FactorPiMinus (G4double kinEnergy)

	G4BGGPionElasticXS (const G4BGGPionElasticXS &)

G4BGGPionElasticXS &	operator= (const G4BGGPionElasticXS &right)

Private Attributes
G4Pow *	fG4pow

G4ComponentGGHadronNucleusXsc *	fGlauber

G4double	fGlauberEnergy

G4HadronNucleonXsc *	fHadron

G4double	fLowEnergy

G4double	fLowestEnergy

G4UPiNuclearCrossSection *	fPion

G4bool	isForAllAtomsAndEnergies

G4bool	isMaster

G4bool	isPiplus

G4double	maxKinEnergy

G4double	minKinEnergy

G4CrossSectionDataSetRegistry *	registry

const G4ParticleDefinition *	thePiPlus

const G4ParticleDefinition *	theProton

Static Private Attributes
static G4int	theA [93] = {0}

static G4double	theCoulombFacPiMinus [93] = {0.0}

static G4double	theCoulombFacPiPlus [93] = {0.0}

static G4double	theGlauberFacPiMinus [93] = {0.0}

static G4double	theGlauberFacPiPlus [93] = {0.0}

Detailed Description

Definition at line 64 of file G4BGGPionElasticXS.hh.

Constructor & Destructor Documentation

◆ G4BGGPionElasticXS() [1/2]

G4BGGPionElasticXS::G4BGGPionElasticXS ( const G4ParticleDefinition * p )

explicit

Definition at line 68 of file G4BGGPionElasticXS.cc.

 : G4VCrossSectionDataSet("BarashenkovGlauberGribov") 
{
  verboseLevel = 0;
  fGlauberEnergy = 91.*GeV;
  fLowEnergy = 20.*MeV;
  fLowestEnergy = 1.*MeV;
  SetMinKinEnergy(0.0);
  SetMaxKinEnergy( G4HadronicParameters::Instance()->GetMaxEnergy() );
 
  fPion = nullptr;
  fGlauber = nullptr;
  fHadron  = nullptr;
 
  fG4pow   = G4Pow::GetInstance();
 
  theProton= G4Proton::Proton();
  thePiPlus= G4PionPlus::PionPlus();
  isPiplus = (p == thePiPlus);
  isMaster = false;
  SetForAllAtomsAndEnergies(true);
}

References fG4pow, fGlauber, fGlauberEnergy, fHadron, fLowEnergy, fLowestEnergy, fPion, G4Pow::GetInstance(), GeV, G4HadronicParameters::Instance(), isMaster, isPiplus, MeV, G4PionPlus::PionPlus(), G4Proton::Proton(), G4VCrossSectionDataSet::SetForAllAtomsAndEnergies(), G4VCrossSectionDataSet::SetMaxKinEnergy(), G4VCrossSectionDataSet::SetMinKinEnergy(), thePiPlus, theProton, and G4VCrossSectionDataSet::verboseLevel.

◆ ~G4BGGPionElasticXS()

G4BGGPionElasticXS::~G4BGGPionElasticXS ( )

final

Definition at line 93 of file G4BGGPionElasticXS.cc.

{
  delete fHadron;
}

References fHadron.

◆ G4BGGPionElasticXS() [2/2]

G4BGGPionElasticXS::G4BGGPionElasticXS ( const G4BGGPionElasticXS & )

private

Member Function Documentation

◆ BuildPhysicsTable()

void G4BGGPionElasticXS::BuildPhysicsTable ( const G4ParticleDefinition & p )

finalvirtual

Reimplemented from G4VCrossSectionDataSet.

Definition at line 175 of file G4BGGPionElasticXS.cc.

{
  if(fPion) { return; }
  if(verboseLevel > 1) {
    G4cout << "G4BGGPionElasticXS::BuildPhysicsTable for " 
           << p.GetParticleName() << G4endl;
  } 
  if(&p == G4PionPlus::PionPlus() || &p == G4PionMinus::PionMinus()) {
    isPiplus = (&p == G4PionPlus::PionPlus());
  } else {
    G4ExceptionDescription ed;
    ed << "This BGG cross section is applicable only to pions and not to " 
       << p.GetParticleName() << G4endl; 
    G4Exception("G4BGGPionElasticXS::BuildPhysicsTable", "had001", 
                FatalException, ed);
    return;
  }
 
  fPion    = new G4UPiNuclearCrossSection();
  fGlauber = new G4ComponentGGHadronNucleusXsc();
  fHadron  = new G4HadronNucleonXsc();
 
  fPion->BuildPhysicsTable(p);
 
  if(0 == theA[0]) { 
#ifdef G4MULTITHREADED
    G4MUTEXLOCK(&pionElasticXSMutex);
    if(0 == theA[0]) { 
#endif
      isMaster = true;
#ifdef G4MULTITHREADED
    }
    G4MUTEXUNLOCK(&pionElasticXSMutex);
#endif
  } else {
    return;
  }
 
  if(isMaster && 0 == theA[0]) {
 
    theA[0] = theA[1] = 1;
    G4ThreeVector mom(0.0,0.0,1.0);
    G4DynamicParticle dp(thePiPlus, mom, fGlauberEnergy);
 
    G4NistManager* nist = G4NistManager::Instance();
 
    G4double csup, csdn;
    for(G4int iz=2; iz<93; ++iz) {
 
      G4int A = G4lrint(nist->GetAtomicMassAmu(iz));
      theA[iz] = A;
 
      csup = fGlauber->GetElasticGlauberGribov(&dp, iz, A);
      csdn = fPion->GetElasticCrossSection(&dp, iz, A);
      theGlauberFacPiPlus[iz] = csdn/csup;
    }
 
    dp.SetDefinition(G4PionMinus::PionMinus());
    for(G4int iz=2; iz<93; ++iz) {
      csup = fGlauber->GetElasticGlauberGribov(&dp, iz, theA[iz]);
      csdn = fPion->GetElasticCrossSection(&dp, iz, theA[iz]);
      theGlauberFacPiMinus[iz] = csdn/csup;
 
      if(verboseLevel > 0) {
        G4cout << "Z= " << iz <<  "  A= " << theA[iz] 
               << " factorPiPlus= " << theGlauberFacPiPlus[iz] 
               << " factorPiMinus= " << theGlauberFacPiMinus[iz] 
               << G4endl; 
      }
    }
    theCoulombFacPiPlus[1] = 1.0;
    theCoulombFacPiMinus[1]= 1.0;
    dp.SetKineticEnergy(fLowEnergy);
    dp.SetDefinition(thePiPlus);
    for(G4int iz=2; iz<93; ++iz) {
      theCoulombFacPiPlus[iz] = fPion->GetElasticCrossSection(&dp, iz, theA[iz])
        /CoulombFactorPiPlus(fLowEnergy, iz);
    }
    dp.SetDefinition(G4PionMinus::PionMinus());
    for(G4int iz=2; iz<93; ++iz) {
      theCoulombFacPiMinus[iz] = fPion->GetElasticCrossSection(&dp, iz, theA[iz])
        /FactorPiMinus(fLowEnergy);
 
      if(verboseLevel > 0) {
        G4cout << "Z= " << iz <<  "  A= " << theA[iz] 
               << " CoulombFactorPiPlus= " << theCoulombFacPiPlus[iz] 
               << " CoulombFactorPiMinus= " << theCoulombFacPiMinus[iz] 
               << G4endl; 
      }
    }
  }
}

References A, G4UPiNuclearCrossSection::BuildPhysicsTable(), CoulombFactorPiPlus(), FactorPiMinus(), FatalException, fGlauber, fGlauberEnergy, fHadron, fLowEnergy, fPion, G4cout, G4endl, G4Exception(), G4lrint(), G4MUTEXLOCK, G4MUTEXUNLOCK, G4NistManager::GetAtomicMassAmu(), G4UPiNuclearCrossSection::GetElasticCrossSection(), G4ComponentGGHadronNucleusXsc::GetElasticGlauberGribov(), G4ParticleDefinition::GetParticleName(), G4NistManager::Instance(), isMaster, isPiplus, G4PionMinus::PionMinus(), G4PionPlus::PionPlus(), G4DynamicParticle::SetDefinition(), G4DynamicParticle::SetKineticEnergy(), theA, theCoulombFacPiMinus, theCoulombFacPiPlus, theGlauberFacPiMinus, theGlauberFacPiPlus, thePiPlus, and G4VCrossSectionDataSet::verboseLevel.

Referenced by G4QMDReaction::G4QMDReaction().

◆ 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().

◆ CoulombFactorPiPlus()

G4double G4BGGPionElasticXS::CoulombFactorPiPlus	(	G4double	kinEnergy,
		G4int	Z
	)

private

Definition at line 270 of file G4BGGPionElasticXS.cc.

{
  return (kinEnergy > 0.0) ? 
    G4NuclearRadii::CoulombFactor(Z, theA[Z], thePiPlus, kinEnergy) : 0.0;
}

References G4NuclearRadii::CoulombFactor(), theA, thePiPlus, and Z.

Referenced by BuildPhysicsTable(), and GetElementCrossSection().

◆ CrossSectionDescription()

void G4BGGPionElasticXS::CrossSectionDescription ( std::ostream & outFile ) const

finalvirtual

Reimplemented from G4VCrossSectionDataSet.

Definition at line 286 of file G4BGGPionElasticXS.cc.

{
  outFile << "The Barashenkov-Glauber-Gribov cross section handles elastic\n"
          << "scattering of pions from nuclei at all energies. The\n"
          << "Barashenkov parameterization is used below 91 GeV and the\n"
          << "Glauber-Gribov parameterization is used above 91 GeV.\n";
}

◆ 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{}

◆ FactorPiMinus()

G4double G4BGGPionElasticXS::FactorPiMinus ( G4double kinEnergy )

private

Definition at line 278 of file G4BGGPionElasticXS.cc.

{
  return 1.0/std::sqrt(kinEnergy);
}

Referenced by BuildPhysicsTable(), and GetElementCrossSection().

◆ 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 G4BGGPionElasticXS::GetElementCrossSection	(	const G4DynamicParticle *	dp,
		G4int	Z,
		const G4Material *	mat
	)

finalvirtual

Reimplemented from G4VCrossSectionDataSet.

Definition at line 119 of file G4BGGPionElasticXS.cc.

{
  // this method should be called only for Z > 1
  G4double cross = 0.0;
  G4double ekin = std::max(dp->GetKineticEnergy(), fLowestEnergy);
  G4int Z = std::min(ZZ, 92);
  if(1 == Z) {
    cross = 1.0115*GetIsoCrossSection(dp,1,1);
  } else {
    if(ekin <= fLowEnergy) {
      cross = (isPiplus) ? theCoulombFacPiPlus[Z]*CoulombFactorPiPlus(ekin, Z)
        : theCoulombFacPiMinus[Z]*FactorPiMinus(ekin);
    } else if(ekin > fGlauberEnergy) {
      cross = (isPiplus) ? theGlauberFacPiPlus[Z] : theGlauberFacPiMinus[Z];
      cross *= fGlauber->GetElasticGlauberGribov(dp, Z, theA[Z]);
    } else {
      cross = fPion->GetElasticCrossSection(dp, Z, theA[Z]);
    }
  }
  if(verboseLevel > 1) {
    G4cout << "G4BGGPionElasticXS::GetElementCrossSection  for "
           << dp->GetDefinition()->GetParticleName()
           << "  Ekin(GeV)= " << dp->GetKineticEnergy()
           << " in nucleus Z= " << Z << "  A= " << theA[Z]
           << " XS(b)= " << cross/barn 
           << G4endl;
  }
  return cross;
}

References barn, CoulombFactorPiPlus(), FactorPiMinus(), fGlauber, fGlauberEnergy, fLowEnergy, fLowestEnergy, fPion, G4cout, G4endl, G4DynamicParticle::GetDefinition(), G4UPiNuclearCrossSection::GetElasticCrossSection(), G4ComponentGGHadronNucleusXsc::GetElasticGlauberGribov(), GetIsoCrossSection(), G4DynamicParticle::GetKineticEnergy(), G4ParticleDefinition::GetParticleName(), isPiplus, G4INCL::Math::max(), G4INCL::Math::min(), theA, theCoulombFacPiMinus, theCoulombFacPiPlus, theGlauberFacPiMinus, theGlauberFacPiPlus, G4VCrossSectionDataSet::verboseLevel, and Z.

Referenced by G4QMDReaction::ApplyYourself().

◆ GetIsoCrossSection()

G4double G4BGGPionElasticXS::GetIsoCrossSection	(	const G4DynamicParticle *	dp,
		G4int	Z,
		G4int	A,
		const G4Isotope *	iso = `nullptr`,
		const G4Element *	elm = `nullptr`,
		const G4Material *	mat = `nullptr`
	)

finalvirtual

Reimplemented from G4VCrossSectionDataSet.

Definition at line 151 of file G4BGGPionElasticXS.cc.

{
  // this method should be called only for Z = 1
  fHadron->HadronNucleonXscNS(dp->GetDefinition(), theProton, 
                              dp->GetKineticEnergy());
  G4double cross = A*fHadron->GetElasticHadronNucleonXsc();
 
  if(verboseLevel > 1) {
    G4cout << "G4BGGPionElasticXS::GetIsoCrossSection  for "
           << dp->GetDefinition()->GetParticleName()
           << "  Ekin(GeV)= " << dp->GetKineticEnergy()
           << " in nucleus Z= " << Z << "  A= " << A
           << " XS(b)= " << cross/barn 
           << G4endl;
  }
  return cross;
}

References A, barn, fHadron, G4cout, G4endl, G4DynamicParticle::GetDefinition(), G4HadronNucleonXsc::GetElasticHadronNucleonXsc(), G4DynamicParticle::GetKineticEnergy(), G4ParticleDefinition::GetParticleName(), G4HadronNucleonXsc::HadronNucleonXscNS(), theProton, G4VCrossSectionDataSet::verboseLevel, and Z.

Referenced by GetElementCrossSection().

◆ 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().

◆ 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.

◆ IsElementApplicable()

G4bool G4BGGPionElasticXS::IsElementApplicable	(	const G4DynamicParticle *	,
		G4int	Z,
		const G4Material *
	)

finalvirtual

Reimplemented from G4VCrossSectionDataSet.

Definition at line 101 of file G4BGGPionElasticXS.cc.

{
  return true;
}

◆ IsIsoApplicable()

G4bool G4BGGPionElasticXS::IsIsoApplicable	(	const G4DynamicParticle *	,
		G4int	Z,
		G4int	A,
		const G4Element *	elm,
		const G4Material *	mat
	)

finalvirtual

Reimplemented from G4VCrossSectionDataSet.

Definition at line 109 of file G4BGGPionElasticXS.cc.

{
  return (1 == Z);
}

References Z.

◆ operator=()

G4BGGPionElasticXS & G4BGGPionElasticXS::operator= ( const G4BGGPionElasticXS & right )

private

◆ SelectIsotope()

const G4Isotope * G4VCrossSectionDataSet::SelectIsotope	(	const G4Element *	anElement,
		G4double	kinEnergy,
		G4double	logE
	)

virtualinherited

Reimplemented in G4GammaNuclearXS, G4NeutronCaptureXS, G4NeutronElasticXS, G4NeutronInelasticXS, and G4ParticleInelasticXS.

Definition at line 149 of file G4VCrossSectionDataSet.cc.

{
  size_t nIso = anElement->GetNumberOfIsotopes();
  const G4Isotope* iso = anElement->GetIsotope(0);
 
  // more than 1 isotope
  if(1 < nIso) {
    const G4double* abundVector = anElement->GetRelativeAbundanceVector();
    G4double sum = 0.0;
    G4double q = G4UniformRand();
    for (size_t j=0; j<nIso; ++j) {
      sum += abundVector[j];
      if(q <= sum) {
    iso = anElement->GetIsotope(j);
    break;
      }
    }
  }
  return iso;
}