[819] | 1 | // |
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| 2 | // ******************************************************************** |
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| 3 | // * License and Disclaimer * |
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| 4 | // * * |
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| 5 | // * The Geant4 software is copyright of the Copyright Holders of * |
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| 6 | // * the Geant4 Collaboration. It is provided under the terms and * |
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| 7 | // * conditions of the Geant4 Software License, included in the file * |
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| 8 | // * LICENSE and available at http://cern.ch/geant4/license . These * |
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| 9 | // * include a list of copyright holders. * |
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| 10 | // * * |
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| 11 | // * Neither the authors of this software system, nor their employing * |
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| 12 | // * institutes,nor the agencies providing financial support for this * |
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| 13 | // * work make any representation or warranty, express or implied, * |
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| 14 | // * regarding this software system or assume any liability for its * |
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| 15 | // * use. Please see the license in the file LICENSE and URL above * |
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| 16 | // * for the full disclaimer and the limitation of liability. * |
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| 17 | // * * |
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| 18 | // * This code implementation is the result of the scientific and * |
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| 19 | // * technical work of the GEANT4 collaboration. * |
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| 20 | // * By using, copying, modifying or distributing the software (or * |
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| 21 | // * any work based on the software) you agree to acknowledge its * |
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| 22 | // * use in resulting scientific publications, and indicate your * |
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| 23 | // * acceptance of all terms of the Geant4 Software license. * |
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| 24 | // ******************************************************************** |
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| 25 | // |
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| 26 | // |
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[962] | 27 | // $Id: G4StatMFMacroCanonical.cc,v 1.8 2008/11/19 14:33:31 vnivanch Exp $ |
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| 28 | // GEANT4 tag $Name: geant4-09-02-ref-02 $ |
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[819] | 29 | // |
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| 30 | // by V. Lara |
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| 31 | // -------------------------------------------------------------------- |
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[962] | 32 | // |
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| 33 | // Modified: |
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| 34 | // 25.07.08 I.Pshenichnov (in collaboration with Alexander Botvina and Igor |
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| 35 | // Mishustin (FIAS, Frankfurt, INR, Moscow and Kurchatov Institute, |
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| 36 | // Moscow, pshenich@fias.uni-frankfurt.de) fixed infinite loop for |
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| 37 | // a fagment with Z=A; fixed memory leak |
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[819] | 38 | |
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| 39 | #include "G4StatMFMacroCanonical.hh" |
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| 40 | |
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| 41 | |
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| 42 | // constructor |
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| 43 | G4StatMFMacroCanonical::G4StatMFMacroCanonical(const G4Fragment & theFragment) |
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| 44 | { |
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| 45 | |
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| 46 | // Get memory for clusters |
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| 47 | _theClusters.push_back(new G4StatMFMacroNucleon); // Size 1 |
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| 48 | _theClusters.push_back(new G4StatMFMacroBiNucleon); // Size 2 |
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| 49 | _theClusters.push_back(new G4StatMFMacroTriNucleon); // Size 3 |
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| 50 | _theClusters.push_back(new G4StatMFMacroTetraNucleon); // Size 4 |
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| 51 | for (G4int i = 4; i < theFragment.GetA(); i++) |
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| 52 | _theClusters.push_back(new G4StatMFMacroMultiNucleon(i+1)); // Size 5 ... A |
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| 53 | |
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| 54 | // Perform class initialization |
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| 55 | Initialize(theFragment); |
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| 56 | |
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| 57 | } |
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| 58 | |
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| 59 | |
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| 60 | // destructor |
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| 61 | G4StatMFMacroCanonical::~G4StatMFMacroCanonical() |
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| 62 | { |
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| 63 | // garbage collection |
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| 64 | if (!_theClusters.empty()) |
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| 65 | { |
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| 66 | std::for_each(_theClusters.begin(),_theClusters.end(),DeleteFragment()); |
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| 67 | } |
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| 68 | } |
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| 69 | |
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| 70 | // operators definitions |
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| 71 | G4StatMFMacroCanonical & |
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| 72 | G4StatMFMacroCanonical::operator=(const G4StatMFMacroCanonical & ) |
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| 73 | { |
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| 74 | throw G4HadronicException(__FILE__, __LINE__, "G4StatMFMacroCanonical::operator= meant to not be accessable"); |
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| 75 | return *this; |
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| 76 | } |
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| 77 | |
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| 78 | G4bool G4StatMFMacroCanonical::operator==(const G4StatMFMacroCanonical & ) const |
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| 79 | { |
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| 80 | return false; |
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| 81 | } |
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| 82 | |
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| 83 | |
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| 84 | G4bool G4StatMFMacroCanonical::operator!=(const G4StatMFMacroCanonical & ) const |
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| 85 | { |
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| 86 | return true; |
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| 87 | } |
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| 88 | |
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| 89 | |
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| 90 | // Initialization method |
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| 91 | |
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| 92 | |
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| 93 | void G4StatMFMacroCanonical::Initialize(const G4Fragment & theFragment) |
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| 94 | { |
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| 95 | |
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| 96 | G4double A = theFragment.GetA(); |
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| 97 | G4double Z = theFragment.GetZ(); |
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| 98 | |
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| 99 | // Free Internal energy at T = 0 |
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| 100 | __FreeInternalE0 = A*( -G4StatMFParameters::GetE0() + // Volume term (for T = 0) |
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| 101 | G4StatMFParameters::GetGamma0()* // Symmetry term |
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| 102 | (1.0-2.0*Z/A)*(1.0-2.0*Z/A) ) + |
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| 103 | G4StatMFParameters::GetBeta0()*std::pow(A,2.0/3.0) + // Surface term (for T = 0) |
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| 104 | (3.0/5.0)*elm_coupling*Z*Z/(G4StatMFParameters::Getr0()* // Coulomb term |
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| 105 | std::pow(A,1.0/3.0)); |
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| 106 | |
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| 107 | |
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| 108 | |
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| 109 | CalculateTemperature(theFragment); |
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| 110 | |
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| 111 | return; |
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| 112 | } |
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| 113 | |
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| 114 | |
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| 115 | |
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| 116 | |
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| 117 | |
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| 118 | void G4StatMFMacroCanonical::CalculateTemperature(const G4Fragment & theFragment) |
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| 119 | { |
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| 120 | // Excitation Energy |
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| 121 | G4double U = theFragment.GetExcitationEnergy(); |
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| 122 | |
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| 123 | G4double A = theFragment.GetA(); |
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| 124 | G4double Z = theFragment.GetZ(); |
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| 125 | |
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| 126 | // Fragment Multiplicity |
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| 127 | G4double FragMult = std::max((1.0+(2.31/MeV)*(U/A - 3.5*MeV))*A/100.0, 2.0); |
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| 128 | |
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| 129 | |
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| 130 | // Parameter Kappa |
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| 131 | _Kappa = (1.0+elm_coupling*(std::pow(FragMult,1./3.)-1)/ |
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| 132 | (G4StatMFParameters::Getr0()*std::pow(A,1./3.))); |
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| 133 | _Kappa = _Kappa*_Kappa*_Kappa - 1.0; |
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| 134 | |
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| 135 | |
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| 136 | G4StatMFMacroTemperature * theTemp = new |
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| 137 | G4StatMFMacroTemperature(A,Z,U,__FreeInternalE0,_Kappa,&_theClusters); |
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| 138 | |
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| 139 | __MeanTemperature = theTemp->CalcTemperature(); |
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| 140 | _ChemPotentialNu = theTemp->GetChemicalPotentialNu(); |
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| 141 | _ChemPotentialMu = theTemp->GetChemicalPotentialMu(); |
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| 142 | __MeanMultiplicity = theTemp->GetMeanMultiplicity(); |
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| 143 | __MeanEntropy = theTemp->GetEntropy(); |
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| 144 | |
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| 145 | delete theTemp; |
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| 146 | |
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| 147 | return; |
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| 148 | } |
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| 149 | |
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| 150 | |
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| 151 | // -------------------------------------------------------------------------- |
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| 152 | |
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| 153 | G4StatMFChannel * G4StatMFMacroCanonical::ChooseAandZ(const G4Fragment &theFragment) |
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| 154 | // Calculate total fragments multiplicity, fragment atomic numbers and charges |
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| 155 | { |
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| 156 | G4double A = theFragment.GetA(); |
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| 157 | G4double Z = theFragment.GetZ(); |
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| 158 | |
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| 159 | std::vector<G4double> ANumbers(static_cast<G4int>(A)); |
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| 160 | |
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| 161 | G4double Multiplicity = ChooseA(A,ANumbers); |
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| 162 | |
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| 163 | |
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| 164 | std::vector<G4double> FragmentsA; |
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| 165 | |
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| 166 | G4int i = 0; |
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| 167 | for (i = 0; i < A; i++) |
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| 168 | { |
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| 169 | for (G4int j = 0; j < ANumbers[i]; j++) FragmentsA.push_back(i+1); |
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| 170 | } |
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| 171 | |
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| 172 | |
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| 173 | // Sort fragments in decreasing order |
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| 174 | G4int im = 0; |
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| 175 | for (G4int j = 0; j < Multiplicity; j++) |
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| 176 | { |
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| 177 | G4double FragmentsAMax = 0.0; |
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| 178 | im = j; |
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| 179 | for (i = j; i < Multiplicity; i++) |
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| 180 | { |
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| 181 | if (FragmentsA[i] <= FragmentsAMax) continue; |
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| 182 | else |
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| 183 | { |
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| 184 | im = i; |
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| 185 | FragmentsAMax = FragmentsA[im]; |
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| 186 | } |
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| 187 | } |
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| 188 | |
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| 189 | if (im != j) |
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| 190 | { |
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| 191 | FragmentsA[im] = FragmentsA[j]; |
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| 192 | FragmentsA[j] = FragmentsAMax; |
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| 193 | } |
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| 194 | } |
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| 195 | |
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| 196 | return ChooseZ(static_cast<G4int>(Z),FragmentsA); |
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| 197 | } |
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| 198 | |
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| 199 | |
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| 200 | |
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| 201 | G4double G4StatMFMacroCanonical::ChooseA(const G4double A, std::vector<G4double> & ANumbers) |
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| 202 | // Determines fragments multiplicities and compute total fragment multiplicity |
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| 203 | { |
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| 204 | G4double multiplicity = 0.0; |
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| 205 | G4int i; |
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| 206 | |
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| 207 | |
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| 208 | std::vector<G4double> AcumMultiplicity; |
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| 209 | AcumMultiplicity.reserve(static_cast<G4int>(A)); |
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| 210 | |
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| 211 | AcumMultiplicity.push_back((*(_theClusters.begin()))->GetMeanMultiplicity()); |
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| 212 | for (std::vector<G4VStatMFMacroCluster*>::iterator it = _theClusters.begin()+1; |
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| 213 | it != _theClusters.end(); ++it) |
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| 214 | { |
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| 215 | AcumMultiplicity.push_back((*it)->GetMeanMultiplicity()+AcumMultiplicity.back()); |
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| 216 | } |
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| 217 | |
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| 218 | G4int CheckA; |
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| 219 | do { |
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| 220 | CheckA = -1; |
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| 221 | G4int SumA = 0; |
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| 222 | G4int ThisOne = 0; |
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| 223 | multiplicity = 0.0; |
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| 224 | for (i = 0; i < A; i++) ANumbers[i] = 0.0; |
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| 225 | do { |
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| 226 | G4double RandNumber = G4UniformRand()*__MeanMultiplicity; |
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| 227 | for (i = 0; i < A; i++) { |
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| 228 | if (RandNumber < AcumMultiplicity[i]) { |
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| 229 | ThisOne = i; |
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| 230 | break; |
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| 231 | } |
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| 232 | } |
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| 233 | multiplicity++; |
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| 234 | ANumbers[ThisOne] = ANumbers[ThisOne]+1; |
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| 235 | SumA += ThisOne+1; |
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| 236 | CheckA = static_cast<G4int>(A) - SumA; |
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| 237 | |
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| 238 | } while (CheckA > 0); |
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| 239 | |
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| 240 | } while (CheckA < 0 || std::abs(__MeanMultiplicity - multiplicity) > std::sqrt(__MeanMultiplicity) + 1./2.); |
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| 241 | |
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| 242 | return multiplicity; |
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| 243 | } |
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| 244 | |
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| 245 | |
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| 246 | G4StatMFChannel * G4StatMFMacroCanonical::ChooseZ(const G4int & Z, |
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| 247 | std::vector<G4double> & FragmentsA) |
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| 248 | // |
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| 249 | { |
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| 250 | std::vector<G4double> FragmentsZ; |
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| 251 | |
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| 252 | G4double DeltaZ = 0.0; |
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| 253 | G4double CP = (3./5.)*(elm_coupling/G4StatMFParameters::Getr0())* |
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| 254 | (1.0 - 1.0/std::pow(1.0+G4StatMFParameters::GetKappaCoulomb(),1./3.)); |
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| 255 | |
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| 256 | G4int multiplicity = FragmentsA.size(); |
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| 257 | |
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| 258 | do |
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| 259 | { |
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| 260 | FragmentsZ.clear(); |
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| 261 | G4int SumZ = 0; |
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| 262 | for (G4int i = 0; i < multiplicity; i++) |
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| 263 | { |
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| 264 | G4double A = FragmentsA[i]; |
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| 265 | if (A <= 1.0) |
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| 266 | { |
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| 267 | G4double RandNumber = G4UniformRand(); |
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| 268 | if (RandNumber < (*_theClusters.begin())->GetZARatio()) |
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| 269 | { |
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| 270 | FragmentsZ.push_back(1.0); |
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| 271 | SumZ += static_cast<G4int>(FragmentsZ[i]); |
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| 272 | } |
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| 273 | else FragmentsZ.push_back(0.0); |
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| 274 | } |
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| 275 | else |
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| 276 | { |
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| 277 | G4double RandZ; |
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| 278 | G4double CC = 8.0*G4StatMFParameters::GetGamma0()+2.0*CP*std::pow(FragmentsA[i],2./3.); |
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| 279 | G4double ZMean; |
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| 280 | if (FragmentsA[i] > 1.5 && FragmentsA[i] < 4.5) ZMean = 0.5*FragmentsA[i]; |
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| 281 | else ZMean = FragmentsA[i]*(4.0*G4StatMFParameters::GetGamma0()+_ChemPotentialNu)/CC; |
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| 282 | G4double ZDispersion = std::sqrt(FragmentsA[i]*__MeanTemperature/CC); |
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| 283 | G4int z; |
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| 284 | do |
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| 285 | { |
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| 286 | RandZ = G4RandGauss::shoot(ZMean,ZDispersion); |
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| 287 | z = static_cast<G4int>(RandZ+0.5); |
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| 288 | } while (z < 0 || z > A); |
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| 289 | FragmentsZ.push_back(z); |
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| 290 | SumZ += z; |
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| 291 | } |
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| 292 | } |
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| 293 | DeltaZ = Z - SumZ; |
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| 294 | } |
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| 295 | while (std::abs(DeltaZ) > 1.1); |
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| 296 | |
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| 297 | // DeltaZ can be 0, 1 or -1 |
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| 298 | G4int idx = 0; |
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| 299 | if (DeltaZ < 0.0) |
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| 300 | { |
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| 301 | while (FragmentsZ[idx] < 0.5) ++idx; |
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| 302 | } |
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| 303 | FragmentsZ[idx] += DeltaZ; |
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| 304 | |
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| 305 | G4StatMFChannel * theChannel = new G4StatMFChannel; |
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| 306 | for (G4int i = multiplicity-1; i >= 0; i--) |
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| 307 | { |
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| 308 | theChannel->CreateFragment(FragmentsA[i],FragmentsZ[i]); |
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| 309 | } |
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| 310 | |
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| 311 | |
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| 312 | return theChannel; |
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| 313 | } |
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