G4FissionProbability Class Reference

#include <G4FissionProbability.hh>

Inheritance diagram for G4FissionProbability:

Collaboration diagram for G4FissionProbability:

Public Member Functions
	G4FissionProbability ()
	~G4FissionProbability ()
G4double	EmissionProbability (const G4Fragment &fragment, G4double MaximalKineticEnergy)
void	SetEvaporationLevelDensityParameter (G4VLevelDensityParameter *aLevelDensity)
void	SetFissionLevelDensityParameter (G4VLevelDensityParameter *aLevelDensity)
Public Member Functions inherited from G4VEmissionProbability
	G4VEmissionProbability ()
virtual	~G4VEmissionProbability ()
void	Initialise ()
void	SetOPTxs (G4int opt)
void	UseSICB (G4bool use)

Additional Inherited Members
Protected Attributes inherited from G4VEmissionProbability
G4int	OPTxs
G4bool	useSICB
G4double	LevelDensity
G4Pow *	fG4pow
G4PairingCorrection *	fPairCorr

Detailed Description

Definition at line 42 of file G4FissionProbability.hh.

Constructor & Destructor Documentation

G4FissionProbability::G4FissionProbability

(

)

Definition at line 43 of file G4FissionProbability.cc.

                                           :
  theEvapLDP(new G4EvaporationLevelDensityParameter),
  theFissLDP(new G4FissionLevelDensityParameter),
  ownEvapLDP(true),
  ownFissLDP(true)
{}

G4FissionProbability::~G4FissionProbability

(

)

Definition at line 50 of file G4FissionProbability.cc.

{
  if (ownEvapLDP) delete theEvapLDP;
  if (ownFissLDP) delete theFissLDP;
}

Member Function Documentation

G4double G4FissionProbability::EmissionProbability ( const G4Fragment &  fragment, G4double  MaximalKineticEnergy  )

virtual

Implements G4VEmissionProbability.

Definition at line 58 of file G4FissionProbability.cc.

{
  if (MaximalKineticEnergy <= 0.0) return 0.0;
  G4int A = fragment.GetA_asInt();
  G4int Z = fragment.GetZ_asInt();
  G4double U = fragment.GetExcitationEnergy();
  
  G4double Ucompound = U - 
    G4PairingCorrection::GetInstance()->GetPairingCorrection(A,Z);

  G4double Ufission = U - 
    G4PairingCorrection::GetInstance()->GetFissionPairingCorrection(A,Z);
  
  G4double SystemEntropy = 
    2.0*std::sqrt(theEvapLDP->LevelDensityParameter(A,Z,Ucompound)*Ucompound);
    
  G4double afission = theFissLDP->LevelDensityParameter(A,Z,Ufission);

  G4double Cf = 2.0*std::sqrt(afission*MaximalKineticEnergy);

  //    G4double Q1 = 1.0 + (Cf - 1.0)*G4Exp(Cf);
  //    G4double Q2 = 4.0*pi*afission*G4Exp(SystemEntropy);
  
  //    G4double probability = Q1/Q2;
   
  G4double Exp1 = 0.0;
  if (SystemEntropy <= 160.0) { Exp1 = G4Exp(-SystemEntropy); }
  // @@@@@@@@@@@@@@@@@ hpw changed max to min - cannot notify vicente now
  G4double Exp2 = G4Exp( std::min(300.0,Cf-SystemEntropy) ); 

  // JMQ 14/02/09 BUG fixed in fission probability (missing parenthesis 
  // at denominator)
  //AH fix from Vincente: G4double probability = 
  //        (Exp1 + (1.0-Cf)*Exp2) / 4.0*pi*afission;
  //    G4double probability = (Exp1 + (Cf-1.0)*Exp2) / 4.0*pi*afission;
  G4double probability = (Exp1 + (Cf-1.0)*Exp2) / (4.0*pi*afission);

  return probability;
}

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void G4FissionProbability::SetEvaporationLevelDensityParameter ( G4VLevelDensityParameter *  aLevelDensity )

inline

Definition at line 61 of file G4FissionProbability.hh.

  { 
    if (ownEvapLDP) delete theEvapLDP;
    theEvapLDP = aLevelDensity;
    ownEvapLDP = false;
  }

void G4FissionProbability::SetFissionLevelDensityParameter ( G4VLevelDensityParameter *  aLevelDensity )

inline

Definition at line 68 of file G4FissionProbability.hh.

  { 
    if (ownFissLDP) delete theFissLDP;
    theFissLDP = aLevelDensity;
    ownFissLDP = false;
  }

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

• geant4.10.03.p01/source/processes/hadronic/models/de_excitation/fission/include/G4FissionProbability.hh
• geant4.10.03.p01/source/processes/hadronic/models/de_excitation/fission/src/G4FissionProbability.cc