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Please see the license in the file LICENSE and URL above * 16 // * for the full disclaimer and the limitatio 16 // * for the full disclaimer and the limitation of liability. * 17 // * 17 // * * 18 // * This code implementation is the result 18 // * This code implementation is the result of the scientific and * 19 // * technical work of the GEANT4 collaboratio 19 // * technical work of the GEANT4 collaboration. * 20 // * By using, copying, modifying or distri 20 // * By using, copying, modifying or distributing the software (or * 21 // * any work based on the software) you ag 21 // * any work based on the software) you agree to acknowledge its * 22 // * use in resulting scientific publicati 22 // * use in resulting scientific publications, and indicate your * 23 // * acceptance of all terms of the Geant4 Sof 23 // * acceptance of all terms of the Geant4 Software license. * 24 // ******************************************* 24 // ******************************************************************** 25 // 25 // 26 // 26 // >> 27 // $Id: G4FissionProbability.cc,v 1.8.4.1 2009/03/03 13:22:52 gcosmo Exp $ >> 28 // GEANT4 tag $Name: geant4-09-02-patch-04 $ 27 // 29 // 28 // Hadronic Process: Nuclear De-excitations 30 // Hadronic Process: Nuclear De-excitations 29 // by V. Lara (Oct 1998) 31 // by V. Lara (Oct 1998) 30 // 32 // 31 // 33 // 32 // J.M.Quesada (14 february 2009) bug fixed in << 34 // J.M.Quesada (14 february 2009) bug fixed in fission width: missing parenthesis in the denominator 33 // parenthesis << 34 35 35 36 36 #include "G4FissionProbability.hh" 37 #include "G4FissionProbability.hh" 37 #include "G4PhysicalConstants.hh" << 38 #include "G4NuclearLevelData.hh" << 39 #include "G4PairingCorrection.hh" 38 #include "G4PairingCorrection.hh" 40 #include "G4EvaporationLevelDensityParameter.h << 39 41 #include "G4FissionLevelDensityParameter.hh" << 40 42 #include "G4Exp.hh" << 41 43 << 42 G4FissionProbability::G4FissionProbability(const G4FissionProbability &) : G4VEmissionProbability() 44 G4FissionProbability::G4FissionProbability() : << 43 { 45 G4VEmissionProbability(0, 0), << 44 throw G4HadronicException(__FILE__, __LINE__, "G4FissionProbability::copy_constructor meant to not be accessable"); 46 theEvapLDP(new G4EvaporationLevelDensityPara << 45 } 47 theFissLDP(new G4FissionLevelDensityParamete << 46 48 ownEvapLDP(true), << 47 49 ownFissLDP(true) << 48 >> 49 >> 50 const G4FissionProbability & G4FissionProbability::operator=(const G4FissionProbability &) >> 51 { >> 52 throw G4HadronicException(__FILE__, __LINE__, "G4FissionProbability::operator= meant to not be accessable"); >> 53 return *this; >> 54 } >> 55 >> 56 >> 57 G4bool G4FissionProbability::operator==(const G4FissionProbability &) const 50 { 58 { 51 fPairCorr = G4NuclearLevelData::GetInstance( << 59 return false; 52 } 60 } 53 61 54 G4FissionProbability::~G4FissionProbability() << 62 G4bool G4FissionProbability::operator!=(const G4FissionProbability &) const 55 { 63 { 56 if (ownEvapLDP) delete theEvapLDP; << 64 return true; 57 if (ownFissLDP) delete theFissLDP; << 58 } 65 } 59 66 60 G4double << 67 61 G4FissionProbability::EmissionProbability(cons << 68 G4double G4FissionProbability::EmissionProbability(const G4Fragment & fragment, const G4double MaximalKineticEnergy) 62 G4double MaximalKineticEnergy) << 69 // Compute integrated probability of fission channel 63 // Compute integrated probability of fission << 64 { 70 { 65 if (MaximalKineticEnergy <= 0.0) { return 0. << 71 if (MaximalKineticEnergy <= 0.0) return 0.0; 66 G4int A = fragment.GetA_asInt(); << 72 G4double A = fragment.GetA(); 67 G4int Z = fragment.GetZ_asInt(); << 73 G4double Z = fragment.GetZ(); 68 G4double U = fragment.GetExcitationEnergy(); << 74 G4double U = fragment.GetExcitationEnergy(); 69 75 70 G4double Ucompound = U - fPairCorr->GetPairi << 76 G4double Ucompound = U - G4PairingCorrection::GetInstance()->GetPairingCorrection(static_cast<G4int>(A), 71 G4double Ufission = U - fPairCorr->GetFissio << 77 static_cast<G4int>(Z)); 72 if(Ucompound < 0.0 || Ufission < 0.0) { retu << 78 G4double Ufission = U - G4PairingCorrection::GetInstance()->GetFissionPairingCorrection(static_cast<G4int>(A), >> 79 static_cast<G4int>(Z)); 73 80 74 G4double SystemEntropy = << 81 G4double SystemEntropy = 2.0*std::sqrt(theEvapLDP.LevelDensityParameter(static_cast<G4int>(A), 75 2.0*std::sqrt(theEvapLDP->LevelDensityPara << 82 static_cast<G4int>(Z), >> 83 Ucompound)*Ucompound); 76 84 77 G4double afission = theFissLDP->LevelDensity << 85 G4double afission = theFissLDP.LevelDensityParameter(static_cast<G4int>(A), >> 86 static_cast<G4int>(Z), >> 87 Ufission); 78 88 79 G4double Cf = 2.0*std::sqrt(afission*Maximal << 89 G4double Cf = 2.0*std::sqrt(afission*MaximalKineticEnergy); 80 G4double Exp1 = (SystemEntropy <= 160.0) ? G << 90 81 G4double Exp2 = (SystemEntropy-Cf <= 160.0) << 91 // G4double Q1 = 1.0 + (Cf - 1.0)*std::exp(Cf); >> 92 // G4double Q2 = 4.0*pi*afission*std::exp(SystemEntropy); >> 93 >> 94 // G4double probability = Q1/Q2; >> 95 >> 96 >> 97 G4double Exp1 = 0.0; >> 98 if (SystemEntropy <= 160.0) Exp1 = std::exp(-SystemEntropy); >> 99 // @@@@@@@@@@@@@@@@@ hpw changed max to min - cannot notify vicente now >> 100 G4double Exp2 = std::exp( std::min(700.0,Cf-SystemEntropy) ); >> 101 >> 102 // JMQ 14/02/09 BUG fixed in fission probability (missing parenthesis at denominator) >> 103 //AH fix from Vincente: G4double probability = (Exp1 + (1.0-Cf)*Exp2) / 4.0*pi*afission; >> 104 // G4double probability = (Exp1 + (Cf-1.0)*Exp2) / 4.0*pi*afission; >> 105 G4double probability = (Exp1 + (Cf-1.0)*Exp2) / (4.0*pi*afission); 82 106 83 // JMQ 14/02/09 BUG fixed in fission probabi << 84 // at denominator) << 85 G4double probability = (Exp1 + (Cf-1.0)*Exp2 << 86 107 87 return probability; << 108 >> 109 return probability; 88 } 110 } 89 111 90 112