G4HETCNeutron Class Reference

#include <G4HETCNeutron.hh>

Inheritance diagram for G4HETCNeutron:

Public Member Functions
	G4HETCNeutron ()
	~G4HETCNeutron ()
virtual G4double	SampleKineticEnergy (const G4Fragment &aFragment)
Public Member Functions inherited from G4HETCFragment
	G4HETCFragment (const G4ParticleDefinition *, G4VCoulombBarrier *aCoulombBarrier)
virtual	~G4HETCFragment ()
G4double	CalcEmissionProbability (const G4Fragment &aFragment)
Public Member Functions inherited from G4VPreCompoundFragment
	G4VPreCompoundFragment (const G4ParticleDefinition *, G4VCoulombBarrier *aCoulombBarrier)
virtual	~G4VPreCompoundFragment ()
void	Initialize (const G4Fragment &aFragment)
virtual G4double	CalcEmissionProbability (const G4Fragment &aFragment)=0
virtual G4double	SampleKineticEnergy (const G4Fragment &aFragment)=0
G4bool	IsItPossible (const G4Fragment &aFragment) const
G4ReactionProduct *	GetReactionProduct () const
G4int	GetA () const
G4int	GetZ () const
G4int	GetRestA () const
G4int	GetRestZ () const
G4double	GetBindingEnergy () const
G4double	GetEnergyThreshold () const
G4double	GetEmissionProbability () const
G4double	GetNuclearMass () const
G4double	GetRestNuclearMass () const
const G4LorentzVector &	GetMomentum () const
void	SetMomentum (const G4LorentzVector &value)
void	SetOPTxs (G4int)
void	UseSICB (G4bool)

Protected Member Functions
virtual G4double	GetAlpha () const
virtual G4double	GetBeta () const
virtual G4double	GetSpinFactor () const
virtual G4double	K (const G4Fragment &aFragment)
Protected Member Functions inherited from G4HETCFragment
virtual G4double	K (const G4Fragment &aFragment)=0
virtual G4double	GetSpinFactor () const =0
virtual G4double	GetAlpha () const =0
virtual G4double	GetBeta () const =0
G4double	BetaRand (G4int N, G4int L) const
virtual G4double	GetAlpha () const =0
virtual G4double	GetBeta () const =0

Additional Inherited Members
Protected Attributes inherited from G4VPreCompoundFragment
G4NuclearLevelData *	fNucData
G4DeexPrecoParameters *	theParameters
G4Pow *	g4calc
G4int	theA
G4int	theZ
G4int	theResA
G4int	theResZ
G4int	theFragA
G4int	theFragZ
G4double	theResA13
G4double	theBindingEnergy
G4double	theMinKinEnergy
G4double	theMaxKinEnergy
G4double	theResMass
G4double	theReducedMass
G4double	theMass
G4double	theEmissionProbability
G4double	theCoulombBarrier
G4int	OPTxs
G4bool	useSICB

Detailed Description

Definition at line 40 of file G4HETCNeutron.hh.

Constructor & Destructor Documentation

G4HETCNeutron()

G4HETCNeutron::G4HETCNeutron

(

)

Definition at line 39 of file G4HETCNeutron.cc.

  : G4HETCFragment(G4Neutron::Neutron(), &theNeutronCoulombBarrier)
{}

~G4HETCNeutron()

G4HETCNeutron::~G4HETCNeutron

(

)

Definition at line 43 of file G4HETCNeutron.cc.

{}

Member Function Documentation

GetAlpha()

G4double G4HETCNeutron::GetAlpha ( ) const

protectedvirtual

Implements G4HETCFragment.

Definition at line 46 of file G4HETCNeutron.cc.

{
  return 0.76+2.2/theResA13;
}

Referenced by GetBeta().

GetBeta()

G4double G4HETCNeutron::GetBeta ( ) const

protectedvirtual

Implements G4HETCFragment.

Definition at line 51 of file G4HETCNeutron.cc.

{
  return (2.12/(theResA13*theResA13)-0.05)*MeV/GetAlpha();
}

Referenced by SampleKineticEnergy().

GetSpinFactor()

G4double G4HETCNeutron::GetSpinFactor ( ) const

protectedvirtual

Implements G4HETCFragment.

Definition at line 56 of file G4HETCNeutron.cc.

{
  // (2s+1)
  return 2.0;
}

K()

G4double G4HETCNeutron::K ( const G4Fragment &  aFragment )

protectedvirtual

Implements G4HETCFragment.

Definition at line 62 of file G4HETCNeutron.cc.

{
  // Number of protons in emitted fragment
  G4int Pa = theZ;
  // Number of neutrons in emitted fragment 
  G4int Na = theA - Pa;
 
  G4double r = G4double(theResZ)/G4double(theResA);
  
  G4int P = aFragment.GetNumberOfParticles();
  G4int H = aFragment.GetNumberOfHoles();
  
  G4double result = 0.0;
  if (P > 0)
    {
      result = (H + Na/(1.0-r))/P;
    }
  
  return std::max(0.0,result);
}

SampleKineticEnergy()

G4double G4HETCNeutron::SampleKineticEnergy ( const G4Fragment &  aFragment )

virtual

Implements G4VPreCompoundFragment.

Definition at line 83 of file G4HETCNeutron.cc.

{
  G4int H = aFragment.GetNumberOfHoles();
  G4int Pb = aFragment.GetNumberOfParticles();
  G4int Nb = Pb + H;
  G4double U = aFragment.GetExcitationEnergy();
  G4double g0 = (6.0/pi2)*fNucData->GetLevelDensity(theFragZ,theFragA,U);
  
  G4double Ab = std::max(0.0,G4double(Pb*Pb+H*H+Pb-3*H)/(4.0*g0));
  G4double Emax = theMaxKinEnergy - Ab;
  
  G4double cut = GetBeta() / (GetBeta()+Emax/G4double(Nb+1));
  G4double x(0.0);
  if (G4UniformRand() <= cut)
    {
      x = BetaRand(Nb,1);
    }
  else 
    {
      x = BetaRand(Nb,2);
    }
 
  return Emax * (1.0 - x);
}

---

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

• G4HETCNeutron.hh
• G4HETCNeutron.cc