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25 // 22 //
26 // 23 //
>> 24 // $Id: G4FissionProbability.cc,v 1.4 2003/11/14 16:54:18 hpw Exp $
>> 25 // GEANT4 tag $Name: geant4-06-00 $
27 // 26 //
28 // Hadronic Process: Nuclear De-excitations 27 // Hadronic Process: Nuclear De-excitations
29 // by V. Lara (Oct 1998) 28 // by V. Lara (Oct 1998)
30 // 29 //
31 // <<
32 // J.M.Quesada (14 february 2009) bug fixed in <<
33 // parenthesis <<
34 30
35 31
36 #include "G4FissionProbability.hh" 32 #include "G4FissionProbability.hh"
37 #include "G4PhysicalConstants.hh" <<
38 #include "G4NuclearLevelData.hh" <<
39 #include "G4PairingCorrection.hh" 33 #include "G4PairingCorrection.hh"
40 #include "G4EvaporationLevelDensityParameter.h << 34
41 #include "G4FissionLevelDensityParameter.hh" << 35
42 #include "G4Exp.hh" << 36
43 << 37 G4FissionProbability::G4FissionProbability(const G4FissionProbability &) : G4VEmissionProbability()
44 G4FissionProbability::G4FissionProbability() : <<
45 G4VEmissionProbability(0, 0), <<
46 theEvapLDP(new G4EvaporationLevelDensityPara <<
47 theFissLDP(new G4FissionLevelDensityParamete <<
48 ownEvapLDP(true), <<
49 ownFissLDP(true) <<
50 { 38 {
51 fPairCorr = G4NuclearLevelData::GetInstance( << 39 throw G4HadronicException(__FILE__, __LINE__, "G4FissionProbability::copy_constructor meant to not be accessable");
52 } 40 }
53 41
54 G4FissionProbability::~G4FissionProbability() << 42
>> 43
>> 44
>> 45 const G4FissionProbability & G4FissionProbability::operator=(const G4FissionProbability &)
55 { 46 {
56 if (ownEvapLDP) delete theEvapLDP; << 47 throw G4HadronicException(__FILE__, __LINE__, "G4FissionProbability::operator= meant to not be accessable");
57 if (ownFissLDP) delete theFissLDP; << 48 return *this;
58 } 49 }
59 50
60 G4double << 51
61 G4FissionProbability::EmissionProbability(cons << 52 G4bool G4FissionProbability::operator==(const G4FissionProbability &) const
62 G4double MaximalKineticEnergy) <<
63 // Compute integrated probability of fission <<
64 { 53 {
65 if (MaximalKineticEnergy <= 0.0) { return 0. << 54 return false;
66 G4int A = fragment.GetA_asInt(); << 55 }
67 G4int Z = fragment.GetZ_asInt(); << 56
68 G4double U = fragment.GetExcitationEnergy(); << 57 G4bool G4FissionProbability::operator!=(const G4FissionProbability &) const
>> 58 {
>> 59 return true;
>> 60 }
>> 61
>> 62
>> 63 G4double G4FissionProbability::EmissionProbability(const G4Fragment & fragment, const G4double MaximalKineticEnergy)
>> 64 // Compute integrated probability of fission channel
>> 65 {
>> 66 if (MaximalKineticEnergy <= 0.0) return 0.0;
>> 67 G4double A = fragment.GetA();
>> 68 G4double Z = fragment.GetZ();
>> 69 G4double U = fragment.GetExcitationEnergy();
69 70
70 G4double Ucompound = U - fPairCorr->GetPairi << 71 G4double Ucompound = U - G4PairingCorrection::GetInstance()->GetPairingCorrection(static_cast<G4int>(A),
71 G4double Ufission = U - fPairCorr->GetFissio << 72 static_cast<G4int>(Z));
72 if(Ucompound < 0.0 || Ufission < 0.0) { retu << 73 G4double Ufission = U - G4PairingCorrection::GetInstance()->GetFissionPairingCorrection(static_cast<G4int>(A),
>> 74 static_cast<G4int>(Z));
73 75
74 G4double SystemEntropy = << 76 G4double SystemEntropy = 2.0*sqrt(theEvapLDP.LevelDensityParameter(static_cast<G4int>(A),
75 2.0*std::sqrt(theEvapLDP->LevelDensityPara << 77 static_cast<G4int>(Z),
>> 78 Ucompound)*Ucompound);
76 79
77 G4double afission = theFissLDP->LevelDensity << 80 G4double afission = theFissLDP.LevelDensityParameter(static_cast<G4int>(A),
>> 81 static_cast<G4int>(Z),
>> 82 Ufission);
78 83
79 G4double Cf = 2.0*std::sqrt(afission*Maximal << 84 G4double Cf = 2.0*sqrt(afission*MaximalKineticEnergy);
80 G4double Exp1 = (SystemEntropy <= 160.0) ? G <<
81 G4double Exp2 = (SystemEntropy-Cf <= 160.0) <<
82 85
83 // JMQ 14/02/09 BUG fixed in fission probabi << 86 // G4double Q1 = 1.0 + (Cf - 1.0)*exp(Cf);
84 // at denominator) << 87 // G4double Q2 = 4.0*pi*afission*exp(SystemEntropy);
85 G4double probability = (Exp1 + (Cf-1.0)*Exp2 << 88
86 << 89 // G4double probability = Q1/Q2;
87 return probability; << 90
>> 91
>> 92 G4double Exp1 = 0.0;
>> 93 if (SystemEntropy <= 160.0) Exp1 = exp(-SystemEntropy);
>> 94 // @@@@@@@@@@@@@@@@@ hpw changed max to min - cannot notify vicente now since cern mail gave up on me...
>> 95 G4double Exp2 = exp( std::min(700.0,Cf-SystemEntropy) );
>> 96
>> 97 G4double probability = (Exp1 + (1.0-Cf)*Exp2) / 4.0*pi*afission;
>> 98
>> 99 return probability;
88 } 100 }
89 101
90 102