G4FissionLevelDensityParameterINCLXX Class Reference

Revised level-density parameter for fission after INCL++. More...

#include <G4FissionLevelDensityParameterINCLXX.hh>

Inheritance diagram for G4FissionLevelDensityParameterINCLXX:

Public Member Functions
	G4FissionLevelDensityParameterINCLXX ()
double	getAfanHigh () const
double	getAfanLow () const
int	getZHigh () const
int	getZLow () const
G4double	LevelDensityParameter (G4int A, G4int Z, G4double U) const final
void	setAfanHigh (const double a)
void	setAfanLow (const double a)
void	setZHigh (const int z)
void	setZLow (const int z)
virtual	~G4FissionLevelDensityParameterINCLXX ()

Private Member Functions
	G4FissionLevelDensityParameterINCLXX (const G4FissionLevelDensityParameterINCLXX &right)
G4bool	operator!= (const G4FissionLevelDensityParameterINCLXX &right) const
const G4FissionLevelDensityParameterINCLXX &	operator= (const G4FissionLevelDensityParameterINCLXX &right)
G4bool	operator== (const G4FissionLevelDensityParameterINCLXX &right) const
void	UpdateAfanSlope ()

Private Attributes
double	afanHigh
double	afanLow
double	afanSlope
G4NuclearLevelData *	fNucData
int	ZHigh
int	ZLow

Detailed Description

Revised level-density parameter for fission after INCL++.

Author

Davide Mancusi

Date

6th October 2014

This class contains a revised level-density parameter that works better than the standard one with the Li`ege Intranuclear Cascade model (INCL++). The fit parameter is the ratio of the level-density parameters in the fission channel and in the neutron-evaporation channel. This is commonly known as af/an and is usually very close to 1.0. Variations of a few percent are likely to induce large factors in the fission probability, because of the exponential growth of the Fermi level density. The best values of af/an were empirically found to be about 1.02 for 1-GeV p+208Pb and 1.04 for 1-GeV p+U238. A linear interpolation was adopted between the two extreme values.

Definition at line 57 of file G4FissionLevelDensityParameterINCLXX.hh.

Constructor & Destructor Documentation

G4FissionLevelDensityParameterINCLXX() [1/2]

G4FissionLevelDensityParameterINCLXX::G4FissionLevelDensityParameterINCLXX ( )

explicit

Definition at line 35 of file G4FissionLevelDensityParameterINCLXX.cc.

                                                                           :
  afanLow(1.03),
  afanHigh(1.05),
  ZLow(84),
  ZHigh(89)
{
  UpdateAfanSlope();
  fNucData = G4NuclearLevelData::GetInstance();
}

References fNucData, G4NuclearLevelData::GetInstance(), and UpdateAfanSlope().

~G4FissionLevelDensityParameterINCLXX()

G4FissionLevelDensityParameterINCLXX::~G4FissionLevelDensityParameterINCLXX ( )

virtual

Definition at line 45 of file G4FissionLevelDensityParameterINCLXX.cc.

{}

G4FissionLevelDensityParameterINCLXX() [2/2]

G4FissionLevelDensityParameterINCLXX::G4FissionLevelDensityParameterINCLXX ( const G4FissionLevelDensityParameterINCLXX &  right )

private

Member Function Documentation

getAfanHigh()

double G4FissionLevelDensityParameterINCLXX::getAfanHigh ( ) const

inline

Definition at line 78 of file G4FissionLevelDensityParameterINCLXX.hh.

{ return afanHigh; }

References afanHigh.

getAfanLow()

double G4FissionLevelDensityParameterINCLXX::getAfanLow ( ) const

inline

Definition at line 77 of file G4FissionLevelDensityParameterINCLXX.hh.

{ return afanLow; }

References afanLow.

getZHigh()

int G4FissionLevelDensityParameterINCLXX::getZHigh ( ) const

inline

Definition at line 80 of file G4FissionLevelDensityParameterINCLXX.hh.

{ return ZHigh; }

References ZHigh.

getZLow()

int G4FissionLevelDensityParameterINCLXX::getZLow ( ) const

inline

Definition at line 79 of file G4FissionLevelDensityParameterINCLXX.hh.

{ return ZLow; }

References ZLow.

LevelDensityParameter()

G4double G4FissionLevelDensityParameterINCLXX::LevelDensityParameter ( G4int  A, G4int  Z, G4double  U  ) const

finalvirtual

Implements G4VLevelDensityParameter.

Definition at line 48 of file G4FissionLevelDensityParameterINCLXX.cc.

{
  G4double EvapLDP = fNucData->GetLevelDensity(Z, A, U); 
 
  if(Z >= ZHigh)     { EvapLDP *= afanHigh; }
  else if(Z <= ZLow) { EvapLDP *= afanLow; }
  else               { EvapLDP *= (afanLow + afanSlope*(Z-ZLow)); }
 
  return EvapLDP;
 
}

References A, afanHigh, afanLow, afanSlope, fNucData, G4NuclearLevelData::GetLevelDensity(), Z, ZHigh, and ZLow.

operator!=()

G4bool G4FissionLevelDensityParameterINCLXX::operator!= ( const G4FissionLevelDensityParameterINCLXX &  right ) const

private

operator=()

const G4FissionLevelDensityParameterINCLXX & G4FissionLevelDensityParameterINCLXX::operator= ( const G4FissionLevelDensityParameterINCLXX &  right )

private

operator==()

G4bool G4FissionLevelDensityParameterINCLXX::operator== ( const G4FissionLevelDensityParameterINCLXX &  right ) const

private

setAfanHigh()

void G4FissionLevelDensityParameterINCLXX::setAfanHigh ( const double  a )

inline

Definition at line 74 of file G4FissionLevelDensityParameterINCLXX.hh.

{ afanHigh = a; UpdateAfanSlope(); }

References afanHigh, and UpdateAfanSlope().

setAfanLow()

void G4FissionLevelDensityParameterINCLXX::setAfanLow ( const double  a )

inline

Definition at line 73 of file G4FissionLevelDensityParameterINCLXX.hh.

{ afanLow = a; UpdateAfanSlope(); }

References afanLow, and UpdateAfanSlope().

setZHigh()

void G4FissionLevelDensityParameterINCLXX::setZHigh ( const int  z )

inline

Definition at line 76 of file G4FissionLevelDensityParameterINCLXX.hh.

{ ZHigh = z; UpdateAfanSlope(); }

References UpdateAfanSlope(), and ZHigh.

setZLow()

void G4FissionLevelDensityParameterINCLXX::setZLow ( const int  z )

inline

Definition at line 75 of file G4FissionLevelDensityParameterINCLXX.hh.

{ ZLow = z; UpdateAfanSlope(); }

References UpdateAfanSlope(), and ZLow.

UpdateAfanSlope()

void G4FissionLevelDensityParameterINCLXX::UpdateAfanSlope ( )

private

Definition at line 61 of file G4FissionLevelDensityParameterINCLXX.cc.

                                                           {
  if(ZHigh!=ZLow)
    afanSlope = (afanHigh-afanLow)/((G4double)(ZHigh-ZLow));
  else
    afanSlope = 0.;
}

References afanHigh, afanLow, afanSlope, ZHigh, and ZLow.

Referenced by G4FissionLevelDensityParameterINCLXX(), setAfanHigh(), setAfanLow(), setZHigh(), and setZLow().

Field Documentation

afanHigh

double G4FissionLevelDensityParameterINCLXX::afanHigh

private

Definition at line 88 of file G4FissionLevelDensityParameterINCLXX.hh.

Referenced by getAfanHigh(), LevelDensityParameter(), setAfanHigh(), and UpdateAfanSlope().

afanLow

double G4FissionLevelDensityParameterINCLXX::afanLow

private

Definition at line 88 of file G4FissionLevelDensityParameterINCLXX.hh.

Referenced by getAfanLow(), LevelDensityParameter(), setAfanLow(), and UpdateAfanSlope().

afanSlope

double G4FissionLevelDensityParameterINCLXX::afanSlope

private

Definition at line 90 of file G4FissionLevelDensityParameterINCLXX.hh.

Referenced by LevelDensityParameter(), and UpdateAfanSlope().

fNucData

G4NuclearLevelData* G4FissionLevelDensityParameterINCLXX::fNucData

private

Definition at line 86 of file G4FissionLevelDensityParameterINCLXX.hh.

Referenced by G4FissionLevelDensityParameterINCLXX(), and LevelDensityParameter().

ZHigh

int G4FissionLevelDensityParameterINCLXX::ZHigh

private

Definition at line 89 of file G4FissionLevelDensityParameterINCLXX.hh.

Referenced by getZHigh(), LevelDensityParameter(), setZHigh(), and UpdateAfanSlope().

ZLow

int G4FissionLevelDensityParameterINCLXX::ZLow

private

Definition at line 89 of file G4FissionLevelDensityParameterINCLXX.hh.

Referenced by getZLow(), LevelDensityParameter(), setZLow(), and UpdateAfanSlope().

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

• source/processes/hadronic/models/de_excitation/fission/include/G4FissionLevelDensityParameterINCLXX.hh
• source/processes/hadronic/models/de_excitation/fission/src/G4FissionLevelDensityParameterINCLXX.cc