G4XMesonBaryonElastic Class Reference

#include <G4XMesonBaryonElastic.hh>

Inheritance diagram for G4XMesonBaryonElastic:

Public Member Functions
virtual G4double	CrossSection (const G4KineticTrack &trk1, const G4KineticTrack &trk2) const
	G4XMesonBaryonElastic ()
virtual const G4CrossSectionVector *	GetComponents () const
virtual G4double	HighLimit () const
virtual G4bool	IsValid (G4double e) const
virtual G4double	LowLimit () const
virtual G4String	Name () const
G4bool	operator!= (const G4VCrossSectionSource &right) const
G4bool	operator!= (const G4XMesonBaryonElastic &right) const
G4bool	operator== (const G4VCrossSectionSource &right) const
G4bool	operator== (const G4XMesonBaryonElastic &right) const
virtual void	Print () const
virtual void	PrintAll (const G4KineticTrack &trk1, const G4KineticTrack &trk2) const
virtual	~G4XMesonBaryonElastic ()

Protected Member Functions
G4double	FcrossX (G4double e, G4double e0, G4double sigma, G4double eParam, G4double power) const
const G4ParticleDefinition *	FindKeyParticle (const G4KineticTrack &trk1, const G4KineticTrack &trk2) const
const G4ParticleDefinition *	FindLightParticle (const G4KineticTrack &trk1, const G4KineticTrack &trk2) const
G4bool	InLimits (G4double e, G4double eLow, G4double eHigh) const

Private Member Functions
	G4XMesonBaryonElastic (const G4XMesonBaryonElastic &right)
const G4XMesonBaryonElastic &	operator= (const G4XMesonBaryonElastic &right)

Private Attributes
G4double	highLimit
G4double	lowLimit

Detailed Description

Definition at line 50 of file G4XMesonBaryonElastic.hh.

Constructor & Destructor Documentation

G4XMesonBaryonElastic() [1/2]

G4XMesonBaryonElastic::G4XMesonBaryonElastic

(

)

Definition at line 38 of file G4XMesonBaryonElastic.cc.

{ 
  // As a first approximation the model is assumed to be valid over 
  // the entire energy range
  lowLimit = 0.;
  highLimit = DBL_MAX;
}

References DBL_MAX, highLimit, and lowLimit.

~G4XMesonBaryonElastic()

G4XMesonBaryonElastic::~G4XMesonBaryonElastic ( )

virtual

Definition at line 47 of file G4XMesonBaryonElastic.cc.

{ }

G4XMesonBaryonElastic() [2/2]

G4XMesonBaryonElastic::G4XMesonBaryonElastic ( const G4XMesonBaryonElastic &  right )

private

Member Function Documentation

CrossSection()

G4double G4XMesonBaryonElastic::CrossSection ( const G4KineticTrack &  trk1, const G4KineticTrack &  trk2  ) const

virtual

Implements G4VCrossSectionSource.

Definition at line 63 of file G4XMesonBaryonElastic.cc.

{
  G4double sigma;
 
  // No gamma-baryon elastic scattering 
  const G4ParticleDefinition* defLight = FindLightParticle(trk1,trk2);
  if (defLight == G4Gamma::GammaDefinition())
    {
      sigma = 0;
    }
  else
    {
 
      G4LorentzVector p41 = trk1.Get4Momentum();
      G4ThreeVector p3 = trk1.GetPosition();
      G4ParticleDefinition* def = G4PionPlus::PionPlusDefinition();
 
      G4KineticTrack piTrk(def,
               trk1.GetFormationTime(),
               p3,
               (G4LorentzVector&)p41);
 
      G4LorentzVector p42 = trk2.Get4Momentum();    
      G4KineticTrack pTrk(((G4ParticleDefinition*)G4Proton::ProtonDefinition()),
              trk2.GetFormationTime(),
              (G4ThreeVector)trk2.GetPosition(),
              (G4LorentzVector&)p42);
      
      G4XAqmElastic aqm;
      G4double xAqmDummy = aqm.CrossSection(piTrk,pTrk);
      G4double xAqm = aqm.CrossSection(trk1,trk2);
      G4double factor = 1.;
      if (xAqmDummy != 0.0)
    {
      factor = xAqm / xAqmDummy;
    }
      G4XPDGElastic pdg;
      
      sigma = pdg.CrossSection(piTrk,pTrk);
      sigma = sigma * factor;
    }
  
  return sigma;
}

References G4XAqmElastic::CrossSection(), G4XPDGElastic::CrossSection(), G4VCrossSectionSource::FindLightParticle(), G4Gamma::GammaDefinition(), G4KineticTrack::Get4Momentum(), G4KineticTrack::GetFormationTime(), G4KineticTrack::GetPosition(), G4PionPlus::PionPlusDefinition(), and G4Proton::ProtonDefinition().

FcrossX()

G4double G4VCrossSectionSource::FcrossX ( G4double  e, G4double  e0, G4double  sigma, G4double  eParam, G4double  power  ) const

protectedinherited

Definition at line 174 of file G4VCrossSectionSource.cc.

{
  G4double result = 0.;
 
  G4double denom = eParam*eParam + (e-e0)*(e-e0);
  if (denom > 0.) 
  {
    G4double value = (2.* eParam * sigma * (e-e0) / denom) * G4Pow::GetInstance()->powA(((e0 + eParam) / e), power);
    result = std::max(0., value);
  }
  return result;
}     

References G4Pow::GetInstance(), G4INCL::Math::max(), and G4Pow::powA().

FindKeyParticle()

const G4ParticleDefinition * G4VCrossSectionSource::FindKeyParticle ( const G4KineticTrack &  trk1, const G4KineticTrack &  trk2  ) const

protectedinherited

Definition at line 49 of file G4VCrossSectionSource.cc.

{
  const G4ParticleDefinition * result;
  
  const G4ParticleDefinition * p1 = trk1.GetDefinition();
  const G4ParticleDefinition * p2 = trk2.GetDefinition();
  
  if( (p1==G4Proton::Proton() && p2==G4Proton::Proton() ) ||
      (p1==G4Neutron::Neutron() && p2==G4Neutron::Neutron()) )
  {
    result = G4Proton::Proton();
  }
  else if( (p1==G4Neutron::Neutron() && p2==G4Proton::Proton()) ||
           (p2==G4Neutron::Neutron() && p1==G4Proton::Proton()) )
  {
    result = G4Neutron::Neutron();
  }
  else
  {
    throw G4HadronicException(__FILE__, __LINE__, "G4VCrossSectionSource: unklnown particles in FindKeyParticle");
  }
  return result;
}

References G4KineticTrack::GetDefinition(), G4Neutron::Neutron(), and G4Proton::Proton().

Referenced by G4XNNElasticLowE::CrossSection(), and G4XNNTotalLowE::CrossSection().

FindLightParticle()

const G4ParticleDefinition * G4VCrossSectionSource::FindLightParticle ( const G4KineticTrack &  trk1, const G4KineticTrack &  trk2  ) const

protectedinherited

Definition at line 158 of file G4VCrossSectionSource.cc.

{
  G4double mass1 = trk1.GetDefinition()->GetPDGMass();
  G4double mass2 = trk2.GetDefinition()->GetPDGMass();
  if (mass1 < mass2)
    {
      return trk1.GetDefinition();
    }
  else
    {
      return trk2.GetDefinition();
    }
}

References G4KineticTrack::GetDefinition(), and G4ParticleDefinition::GetPDGMass().

Referenced by CrossSection().

GetComponents()

virtual const G4CrossSectionVector * G4XMesonBaryonElastic::GetComponents ( ) const

inlinevirtual

Implements G4VCrossSectionSource.

Definition at line 64 of file G4XMesonBaryonElastic.hh.

{ return 0; }

HighLimit()

G4double G4VCrossSectionSource::HighLimit ( ) const

virtualinherited

Reimplemented in G4XNNElasticLowE, G4XNNTotalLowE, G4XnpElasticLowE, and G4XnpTotalLowE.

Definition at line 146 of file G4VCrossSectionSource.cc.

{
  return DBL_MAX; 
}

References DBL_MAX.

Referenced by G4CrossSectionPatch::CrossSection(), G4VCrossSectionSource::IsValid(), and G4CrossSectionPatch::Transition().

InLimits()

G4bool G4VCrossSectionSource::InLimits ( G4double  e, G4double  eLow, G4double  eHigh  ) const

protectedinherited

Definition at line 133 of file G4VCrossSectionSource.cc.

{
  G4bool answer = false;
  if (e >= eLow && e <= eHigh) answer = true;
  return answer;
}

Referenced by G4XAnnihilationChannel::IsValid(), G4XAqmElastic::IsValid(), G4XAqmTotal::IsValid(), IsValid(), G4XNNElasticLowE::IsValid(), G4XnpElasticLowE::IsValid(), G4XnpTotalLowE::IsValid(), G4XPDGElastic::IsValid(), and G4XPDGTotal::IsValid().

IsValid()

G4bool G4XMesonBaryonElastic::IsValid ( G4double  e ) const

virtual

Reimplemented from G4VCrossSectionSource.

Definition at line 117 of file G4XMesonBaryonElastic.cc.

{
  G4bool answer = InLimits(e,lowLimit,highLimit);
 
  return answer;
}

References highLimit, G4VCrossSectionSource::InLimits(), and lowLimit.

LowLimit()

G4double G4VCrossSectionSource::LowLimit ( ) const

virtualinherited

Reimplemented in G4XPDGElastic, and G4XPDGTotal.

Definition at line 140 of file G4VCrossSectionSource.cc.

{
  return 0.; 
}

Referenced by G4CrossSectionPatch::CrossSection(), G4VCrossSectionSource::IsValid(), and G4CrossSectionPatch::Transition().

Name()

G4String G4XMesonBaryonElastic::Name ( ) const

virtual

Implements G4VCrossSectionSource.

Definition at line 109 of file G4XMesonBaryonElastic.cc.

{
  G4String name("MesonBaryonElasticCrossSection");
  return name;
}

References G4InuclParticleNames::name().

operator!=() [1/2]

G4bool G4VCrossSectionSource::operator!= ( const G4VCrossSectionSource &  right ) const

inherited

Definition at line 80 of file G4VCrossSectionSource.cc.

{
  return (this != (G4VCrossSectionSource *) &right);
}

operator!=() [2/2]

G4bool G4XMesonBaryonElastic::operator!=

(

const G4XMesonBaryonElastic &

right

)

const

Definition at line 57 of file G4XMesonBaryonElastic.cc.

{
  return (this != (G4XMesonBaryonElastic *) &right);
}

operator=()

const G4XMesonBaryonElastic & G4XMesonBaryonElastic::operator= ( const G4XMesonBaryonElastic &  right )

private

operator==() [1/2]

G4bool G4VCrossSectionSource::operator== ( const G4VCrossSectionSource &  right ) const

inherited

Definition at line 74 of file G4VCrossSectionSource.cc.

{
  return (this == (G4VCrossSectionSource *) &right);
}

operator==() [2/2]

G4bool G4XMesonBaryonElastic::operator==

(

const G4XMesonBaryonElastic &

right

)

const

Definition at line 51 of file G4XMesonBaryonElastic.cc.

{
  return (this == (G4XMesonBaryonElastic *) &right);
}

Print()

void G4VCrossSectionSource::Print ( ) const

virtualinherited

Reimplemented in G4XNNElasticLowE, G4XnpElasticLowE, and G4XnpTotalLowE.

Definition at line 86 of file G4VCrossSectionSource.cc.

{
  G4int nComponents = 0;
  const G4CrossSectionVector* components = GetComponents();
  if (components)
    {
      nComponents = components->size();
    }
  G4cout << "---- " << this->Name() << " ---- has " << nComponents << " components" <<G4endl;
  G4int i;
  for (i=0; i<nComponents; i++)
    {
      G4cout << "-" <<  this->Name() << " - Component " << i << ": " <<G4endl;
 
      G4CrossSectionSourcePtr componentPtr = (*components)[i];
      G4VCrossSectionSource* component = componentPtr();
      component->Print();
    }
}

References G4cout, G4endl, G4VCrossSectionSource::GetComponents(), G4VCrossSectionSource::Name(), and G4VCrossSectionSource::Print().

Referenced by G4VCollision::Print(), G4VCrossSectionSource::Print(), G4XNNElasticLowE::Print(), G4XnpElasticLowE::Print(), and G4XnpTotalLowE::Print().

PrintAll()

void G4VCrossSectionSource::PrintAll ( const G4KineticTrack &  trk1, const G4KineticTrack &  trk2  ) const

virtualinherited

Definition at line 107 of file G4VCrossSectionSource.cc.

{
  G4double sqrtS = (trk1.Get4Momentum() + trk2.Get4Momentum()).mag();
  G4double sigma = CrossSection(trk1,trk2) / millibarn;
  G4cout << "---- " << Name() << ": "
     << "Ecm = " << sqrtS / GeV << " GeV -  " 
     << " Cross section = " << sigma << " mb "
     << G4endl;
 
  G4int nComponents = 0;
  const G4CrossSectionVector* components = GetComponents();
  if (components != 0)
    {
      nComponents = components->size();
    }
  G4int i;
  for (i=0; i<nComponents; i++)
    {
      G4cout << "* Component " << i << ": ";
      G4CrossSectionSourcePtr componentPtr = (*components)[i];
      G4VCrossSectionSource* component = componentPtr();
      component->PrintAll(trk1,trk2);
    }
}

References G4VCrossSectionSource::CrossSection(), G4cout, G4endl, G4KineticTrack::Get4Momentum(), G4VCrossSectionSource::GetComponents(), GeV, millibarn, G4VCrossSectionSource::Name(), and G4VCrossSectionSource::PrintAll().

Referenced by G4VCrossSectionSource::PrintAll().

Field Documentation

highLimit

G4double G4XMesonBaryonElastic::highLimit

private

Definition at line 80 of file G4XMesonBaryonElastic.hh.

Referenced by G4XMesonBaryonElastic(), and IsValid().

lowLimit

G4double G4XMesonBaryonElastic::lowLimit

private

Definition at line 79 of file G4XMesonBaryonElastic.hh.

Referenced by G4XMesonBaryonElastic(), and IsValid().

---

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

• source/processes/hadronic/models/im_r_matrix/include/G4XMesonBaryonElastic.hh
• source/processes/hadronic/models/im_r_matrix/src/G4XMesonBaryonElastic.cc