G4PreCompoundIon Class Reference

#include <G4PreCompoundIon.hh>

Inheritance diagram for G4PreCompoundIon:

Public Member Functions
	G4PreCompoundIon (const G4ParticleDefinition *, G4VCoulombBarrier *aCoulombBarrier)
virtual	~G4PreCompoundIon ()
Public Member Functions inherited from G4PreCompoundFragment
	G4PreCompoundFragment (const G4ParticleDefinition *, G4VCoulombBarrier *aCoulombBarrier)
virtual	~G4PreCompoundFragment ()
G4double	CalcEmissionProbability (const G4Fragment &aFragment)
G4double	SampleKineticEnergy (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	GetRj (G4int NumberParticles, G4int NumberCharged) const =0
virtual G4double	GetBeta () const
virtual G4double	ProbabilityDistributionFunction (G4double eKin, const G4Fragment &aFragment)
virtual G4double	FactorialFactor (G4int N, G4int P) const =0
virtual G4double	CoalescenceFactor (G4int A) const =0
Protected Member Functions inherited from G4PreCompoundFragment
virtual G4double	GetAlpha () const =0
virtual G4double	GetBeta () const =0
G4double	CrossSection (G4double ekin) const
virtual G4double	ProbabilityDistributionFunction (G4double K, const G4Fragment &aFragment)=0
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 41 of file G4PreCompoundIon.hh.

Constructor & Destructor Documentation

G4PreCompoundIon()

G4PreCompoundIon::G4PreCompoundIon	(	const G4ParticleDefinition *	part,
		G4VCoulombBarrier *	aCoulombBarrier
	)

Definition at line 47 of file G4PreCompoundIon.cc.

  : G4PreCompoundFragment(part,aCoulombBarrier)
{
  G4double r0 = theParameters->GetR0();
  fact = 0.75*CLHEP::millibarn/(CLHEP::pi*r0*r0*r0);
}

~G4PreCompoundIon()

G4PreCompoundIon::~G4PreCompoundIon ( )

virtual

Definition at line 56 of file G4PreCompoundIon.cc.

{}

Member Function Documentation

CoalescenceFactor()

virtual G4double G4PreCompoundIon::CoalescenceFactor ( G4int  A ) const

protectedpure virtual

Implemented in G4PreCompoundAlpha, G4PreCompoundDeuteron, G4PreCompoundHe3, and G4PreCompoundTriton.

Referenced by ProbabilityDistributionFunction().

FactorialFactor()

virtual G4double G4PreCompoundIon::FactorialFactor ( G4int  N, G4int  P  ) const

protectedpure virtual

Implemented in G4PreCompoundAlpha, G4PreCompoundDeuteron, G4PreCompoundHe3, and G4PreCompoundTriton.

Referenced by ProbabilityDistributionFunction().

GetBeta()

G4double G4PreCompoundIon::GetBeta ( ) const

protectedvirtual

Implements G4PreCompoundFragment.

Definition at line 101 of file G4PreCompoundIon.cc.

{
  return -theCoulombBarrier;
}

GetRj()

virtual G4double G4PreCompoundIon::GetRj ( G4int  NumberParticles, G4int  NumberCharged  ) const

protectedpure virtual

Implemented in G4PreCompoundAlpha, G4PreCompoundDeuteron, G4PreCompoundHe3, and G4PreCompoundTriton.

Referenced by ProbabilityDistributionFunction().

ProbabilityDistributionFunction()

G4double G4PreCompoundIon::ProbabilityDistributionFunction ( G4double  eKin, const G4Fragment &  aFragment  )

protectedvirtual

Implements G4PreCompoundFragment.

Definition at line 59 of file G4PreCompoundIon.cc.

{
  G4double efinal = eKin + theBindingEnergy;
  if(efinal <= 0.0 ) { return 0.0; } 
 
  G4double U = aFragment.GetExcitationEnergy();
  G4int P = aFragment.GetNumberOfParticles();
  G4int H = aFragment.GetNumberOfHoles();
  G4int A = GetA();
  G4int N = P + H;
 
  static const G4double sixoverpi2 = 6.0/CLHEP::pi2;
  G4double g0 = sixoverpi2*fNucData->GetLevelDensity(theFragZ, theFragA, U);
  G4double g1 = sixoverpi2*fNucData->GetLevelDensity(theResZ, theResA, 0.0);
 
  G4double gj = g1;
 
  G4double A0 = G4double(P*P+H*H+P-3*H)/(4.0*g0);
  G4double A1 = std::max(0.0,(A0*g0 + A*(A-2*P-1)*0.25)/g1); 
 
  G4double E0 = U - A0;
  if (E0 <= 0.0) { return 0.0; }
 
  G4double E1 = std::max(0.0,theMaxKinEnergy - eKin - A1); 
 
  G4double Aj = A*(A+1)/(4.0*gj); 
  G4double Ej = std::max(0.0,efinal - Aj); 
 
  G4double rj = GetRj(P, aFragment.GetNumberOfCharged());
  G4double xs = CrossSection(eKin);
  
  G4double pA = fact*eKin*xs*rj 
    * CoalescenceFactor(theFragA) * FactorialFactor(N,P)
    * std::sqrt(2.0/(theReducedMass*efinal)) 
    * g4calc->powN(g1*E1/(g0*E0), N-A-1)
    * g4calc->powN(gj*Ej/(g0*E0), A-1)*gj*g1/(g0*g0*E0*theResA); 
   
  return pA;
}

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

• G4PreCompoundIon.hh
• G4PreCompoundIon.cc