| Geant4 Cross Reference |
1 // 1 //
2 // ******************************************* 2 // ********************************************************************
3 // * License and Disclaimer 3 // * License and Disclaimer *
4 // * 4 // * *
5 // * The Geant4 software is copyright of th 5 // * The Geant4 software is copyright of the Copyright Holders of *
6 // * the Geant4 Collaboration. It is provided 6 // * the Geant4 Collaboration. It is provided under the terms and *
7 // * conditions of the Geant4 Software License 7 // * conditions of the Geant4 Software License, included in the file *
8 // * LICENSE and available at http://cern.ch/ 8 // * LICENSE and available at http://cern.ch/geant4/license . These *
9 // * include a list of copyright holders. 9 // * include a list of copyright holders. *
10 // * 10 // * *
11 // * Neither the authors of this software syst 11 // * Neither the authors of this software system, nor their employing *
12 // * institutes,nor the agencies providing fin 12 // * institutes,nor the agencies providing financial support for this *
13 // * work make any representation or warran 13 // * work make any representation or warranty, express or implied, *
14 // * regarding this software system or assum 14 // * regarding this software system or assume any liability for its *
15 // * use. Please see the license in the file 15 // * use. 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 1.7 2006/06/29 20:13:41 gunter Exp $
>> 28 // GEANT4 tag $Name: geant4-08-02 $
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 // <<
32 // J.M.Quesada (14 february 2009) bug fixed in <<
33 // parenthesis <<
34 33
35 34
36 #include "G4FissionProbability.hh" 35 #include "G4FissionProbability.hh"
37 #include "G4PhysicalConstants.hh" <<
38 #include "G4NuclearLevelData.hh" <<
39 #include "G4PairingCorrection.hh" 36 #include "G4PairingCorrection.hh"
40 #include "G4EvaporationLevelDensityParameter.h << 37
41 #include "G4FissionLevelDensityParameter.hh" << 38
42 #include "G4Exp.hh" << 39
43 << 40 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 { 41 {
51 fPairCorr = G4NuclearLevelData::GetInstance( << 42 throw G4HadronicException(__FILE__, __LINE__, "G4FissionProbability::copy_constructor meant to not be accessable");
52 } 43 }
53 44
54 G4FissionProbability::~G4FissionProbability() << 45
>> 46
>> 47
>> 48 const G4FissionProbability & G4FissionProbability::operator=(const G4FissionProbability &)
55 { 49 {
56 if (ownEvapLDP) delete theEvapLDP; << 50 throw G4HadronicException(__FILE__, __LINE__, "G4FissionProbability::operator= meant to not be accessable");
57 if (ownFissLDP) delete theFissLDP; << 51 return *this;
58 } 52 }
59 53
60 G4double << 54
61 G4FissionProbability::EmissionProbability(cons << 55 G4bool G4FissionProbability::operator==(const G4FissionProbability &) const
62 G4double MaximalKineticEnergy) <<
63 // Compute integrated probability of fission <<
64 { 56 {
65 if (MaximalKineticEnergy <= 0.0) { return 0. << 57 return false;
66 G4int A = fragment.GetA_asInt(); << 58 }
67 G4int Z = fragment.GetZ_asInt(); << 59
68 G4double U = fragment.GetExcitationEnergy(); << 60 G4bool G4FissionProbability::operator!=(const G4FissionProbability &) const
>> 61 {
>> 62 return true;
>> 63 }
>> 64
>> 65
>> 66 G4double G4FissionProbability::EmissionProbability(const G4Fragment & fragment, const G4double MaximalKineticEnergy)
>> 67 // Compute integrated probability of fission channel
>> 68 {
>> 69 if (MaximalKineticEnergy <= 0.0) return 0.0;
>> 70 G4double A = fragment.GetA();
>> 71 G4double Z = fragment.GetZ();
>> 72 G4double U = fragment.GetExcitationEnergy();
69 73
70 G4double Ucompound = U - fPairCorr->GetPairi << 74 G4double Ucompound = U - G4PairingCorrection::GetInstance()->GetPairingCorrection(static_cast<G4int>(A),
71 G4double Ufission = U - fPairCorr->GetFissio << 75 static_cast<G4int>(Z));
72 if(Ucompound < 0.0 || Ufission < 0.0) { retu << 76 G4double Ufission = U - G4PairingCorrection::GetInstance()->GetFissionPairingCorrection(static_cast<G4int>(A),
>> 77 static_cast<G4int>(Z));
73 78
74 G4double SystemEntropy = << 79 G4double SystemEntropy = 2.0*std::sqrt(theEvapLDP.LevelDensityParameter(static_cast<G4int>(A),
75 2.0*std::sqrt(theEvapLDP->LevelDensityPara << 80 static_cast<G4int>(Z),
>> 81 Ucompound)*Ucompound);
76 82
77 G4double afission = theFissLDP->LevelDensity << 83 G4double afission = theFissLDP.LevelDensityParameter(static_cast<G4int>(A),
>> 84 static_cast<G4int>(Z),
>> 85 Ufission);
78 86
79 G4double Cf = 2.0*std::sqrt(afission*Maximal << 87 G4double Cf = 2.0*std::sqrt(afission*MaximalKineticEnergy);
80 G4double Exp1 = (SystemEntropy <= 160.0) ? G <<
81 G4double Exp2 = (SystemEntropy-Cf <= 160.0) <<
82 88
83 // JMQ 14/02/09 BUG fixed in fission probabi << 89 // G4double Q1 = 1.0 + (Cf - 1.0)*std::exp(Cf);
84 // at denominator) << 90 // G4double Q2 = 4.0*pi*afission*std::exp(SystemEntropy);
85 G4double probability = (Exp1 + (Cf-1.0)*Exp2 << 91
86 << 92 // G4double probability = Q1/Q2;
87 return probability; << 93
>> 94
>> 95 G4double Exp1 = 0.0;
>> 96 if (SystemEntropy <= 160.0) Exp1 = std::exp(-SystemEntropy);
>> 97 // @@@@@@@@@@@@@@@@@ hpw changed max to min - cannot notify vicente now since cern mail gave up on me...
>> 98 G4double Exp2 = std::exp( std::min(700.0,Cf-SystemEntropy) );
>> 99
>> 100 G4double probability = (Exp1 + (1.0-Cf)*Exp2) / 4.0*pi*afission;
>> 101
>> 102 return probability;
88 } 103 }
89 104
90 105