G4FissionParameters Class Reference

#include <G4FissionParameters.hh>

Public Member Functions
void	DefineParameters (G4int A, G4int Z, G4double ExEnergy, G4double FissionBarrier)
	G4FissionParameters ()
G4int	GetA1 (void) const
G4int	GetA2 (void) const
G4double	GetAs (void) const
G4double	GetSigma1 (void) const
G4double	GetSigma2 (void) const
G4double	GetSigmaS (void) const
G4double	GetW (void) const
	~G4FissionParameters ()

Private Member Functions
	G4FissionParameters (const G4FissionParameters &right)
G4double	LocalExp (G4double x) const
G4bool	operator!= (const G4FissionParameters &right) const
const G4FissionParameters &	operator= (const G4FissionParameters &right)
G4bool	operator== (const G4FissionParameters &right) const

Private Attributes
G4int	A1
G4int	A2
G4double	A3
G4double	As
G4double	Sigma1
G4double	Sigma2
G4double	SigmaS
G4double	w

Detailed Description

Definition at line 38 of file G4FissionParameters.hh.

Constructor & Destructor Documentation

G4FissionParameters() [1/2]

G4FissionParameters::G4FissionParameters

(

)

Definition at line 37 of file G4FissionParameters.cc.

  : A1(134),A2(141),A3((A1 + A2)*0.5),As(0.0),Sigma1(0.0),Sigma2(0.0),
    SigmaS(0.),w(0.0)
{}

~G4FissionParameters()

G4FissionParameters::~G4FissionParameters

(

)

Definition at line 42 of file G4FissionParameters.cc.

{}

G4FissionParameters() [2/2]

G4FissionParameters::G4FissionParameters ( const G4FissionParameters &  right )

private

Member Function Documentation

DefineParameters()

void G4FissionParameters::DefineParameters	(	G4int	A,
		G4int	Z,
		G4double	ExEnergy,
		G4double	FissionBarrier
	)

Definition at line 45 of file G4FissionParameters.cc.

{
  // to avoid usage of units
  G4double U = std::min(200., ExEnergy/CLHEP::MeV); 
 
  As = A*0.5;
    
  if (A <= 235) { Sigma2 = 5.6; }  
  else          { Sigma2 = 5.6 + 0.096*(A-235); }
 
  Sigma1 = 0.5*Sigma2;     
    
  //JMQ 310509 
  //    if (SigmaS > 20.0) SigmaS = 20.0;
  //   SigmaS*=1.3;
  //JMQ 301009: retuning (after CEM transition prob.have been chosen as default)
  SigmaS = 0.8*G4Exp(0.00553*U + 2.1386); 
        
  G4double wa = 0.0;
  w = 0.0;
  if (Z >= 90) {  
    if (U <= 16.25) { wa = G4Exp(0.5385*U-9.9564); }  
    else            { wa = G4Exp(0.09197*U-2.7003); }            
  } else if (Z == 89) {  
    wa = G4Exp(0.09197*U-1.0808);
  } else if (Z >= 82) {  
    G4double X = std::max(0.0, FissionBarrier/CLHEP::MeV - 7.5);
    wa = G4Exp(0.09197*(U-X) - 1.0808);
  } else {               // Z < 82
    w = 1001.0;
  }
    
  if (Z >= 82) {
    G4double x1 = (A1-As)/Sigma1;
    G4double x2 = (A2-As)/Sigma2;
    G4double FasymAsym = 2*LocalExp(x2) + LocalExp(x1);
    
    G4double x3 = (As-A3)/SigmaS;
    G4double FsymA1A2 = LocalExp(x3);
 
    G4double w1 = std::max(1.03*wa - FasymAsym, 0.0001);
    G4double w2 = std::max(1.0 - FsymA1A2*wa,   0.0001);
    
    w = w1/w2;
      
    if (A < 227) { w *= G4Exp(0.3*(227-A)); }
  }
}

References A, A1, A2, A3, As, G4Exp(), LocalExp(), G4INCL::Math::max(), CLHEP::MeV, G4INCL::Math::min(), Sigma1, Sigma2, SigmaS, w, and Z.

Referenced by G4CompetitiveFission::EmittedFragment().

GetA1()

G4int G4FissionParameters::GetA1 ( void  ) const

inline

Definition at line 51 of file G4FissionParameters.hh.

{ return A1; }

References A1.

Referenced by G4CompetitiveFission::FissionAtomicNumber(), G4CompetitiveFission::FissionKineticEnergy(), and G4CompetitiveFission::MassDistribution().

GetA2()

G4int G4FissionParameters::GetA2 ( void  ) const

inline

Definition at line 52 of file G4FissionParameters.hh.

{ return A2; }

References A2.

Referenced by G4CompetitiveFission::FissionAtomicNumber(), G4CompetitiveFission::FissionKineticEnergy(), and G4CompetitiveFission::MassDistribution().

GetAs()

G4double G4FissionParameters::GetAs ( void  ) const

inline

Definition at line 54 of file G4FissionParameters.hh.

{ return As; }

References As.

Referenced by G4CompetitiveFission::FissionAtomicNumber(), G4CompetitiveFission::FissionKineticEnergy(), and G4CompetitiveFission::MassDistribution().

GetSigma1()

G4double G4FissionParameters::GetSigma1 ( void  ) const

inline

Definition at line 55 of file G4FissionParameters.hh.

{ return Sigma1; }

References Sigma1.

Referenced by G4CompetitiveFission::FissionKineticEnergy(), and G4CompetitiveFission::MassDistribution().

GetSigma2()

G4double G4FissionParameters::GetSigma2 ( void  ) const

inline

Definition at line 56 of file G4FissionParameters.hh.

{ return Sigma2; }

References Sigma2.

Referenced by G4CompetitiveFission::FissionAtomicNumber(), G4CompetitiveFission::FissionKineticEnergy(), and G4CompetitiveFission::MassDistribution().

GetSigmaS()

G4double G4FissionParameters::GetSigmaS ( void  ) const

inline

Definition at line 57 of file G4FissionParameters.hh.

{ return SigmaS; }

References SigmaS.

Referenced by G4CompetitiveFission::FissionAtomicNumber(), G4CompetitiveFission::FissionKineticEnergy(), and G4CompetitiveFission::MassDistribution().

GetW()

G4double G4FissionParameters::GetW ( void  ) const

inline

Definition at line 58 of file G4FissionParameters.hh.

{ return w; }

References w.

Referenced by G4CompetitiveFission::FissionAtomicNumber(), G4CompetitiveFission::FissionKineticEnergy(), and G4CompetitiveFission::MassDistribution().

LocalExp()

G4double G4FissionParameters::LocalExp ( G4double  x ) const

inlineprivate

Definition at line 62 of file G4FissionParameters.hh.

  {
    return (std::abs(x) < 8.) ? G4Exp(-0.5*x*x) : 0.0;
  }

References G4Exp().

Referenced by DefineParameters().

operator!=()

G4bool G4FissionParameters::operator!= ( const G4FissionParameters &  right ) const

private

operator=()

const G4FissionParameters & G4FissionParameters::operator= ( const G4FissionParameters &  right )

private

operator==()

G4bool G4FissionParameters::operator== ( const G4FissionParameters &  right ) const

private

Field Documentation

A1

G4int G4FissionParameters::A1

private

Definition at line 74 of file G4FissionParameters.hh.

Referenced by DefineParameters(), and GetA1().

A2

G4int G4FissionParameters::A2

private

Definition at line 75 of file G4FissionParameters.hh.

Referenced by DefineParameters(), and GetA2().

A3

G4double G4FissionParameters::A3

private

Definition at line 76 of file G4FissionParameters.hh.

Referenced by DefineParameters().

As

G4double G4FissionParameters::As

private

Definition at line 79 of file G4FissionParameters.hh.

Referenced by DefineParameters(), and GetAs().

Sigma1

G4double G4FissionParameters::Sigma1

private

Definition at line 83 of file G4FissionParameters.hh.

Referenced by DefineParameters(), and GetSigma1().

Sigma2

G4double G4FissionParameters::Sigma2

private

Definition at line 84 of file G4FissionParameters.hh.

Referenced by DefineParameters(), and GetSigma2().

SigmaS

G4double G4FissionParameters::SigmaS

private

Definition at line 87 of file G4FissionParameters.hh.

Referenced by DefineParameters(), and GetSigmaS().

w

G4double G4FissionParameters::w

private

Definition at line 91 of file G4FissionParameters.hh.

Referenced by DefineParameters(), and GetW().

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

• source/processes/hadronic/models/de_excitation/fission/include/G4FissionParameters.hh
• source/processes/hadronic/models/de_excitation/fission/src/G4FissionParameters.cc