[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: G4Evaporation.cc,v 1.12 2008/12/09 17:57:36 ahoward 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 | // Hadronic Process: Nuclear De-excitations |
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| 31 | // by V. Lara (Oct 1998) |
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| 32 | // |
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| 33 | // Alex Howard - added protection for negative probabilities in the sum, 14/2/07 |
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| 34 | // |
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[962] | 35 | // Modif (03 September 2008) by J. M. Quesada for external choice of inverse |
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| 36 | // cross section option |
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| 37 | // JMQ (06 September 2008) Also external choices have been added for |
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| 38 | // superimposed Coulomb barrier (if useSICBis set true, by default is false) |
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| 39 | |
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[819] | 40 | #include "G4Evaporation.hh" |
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| 41 | #include "G4EvaporationFactory.hh" |
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| 42 | #include "G4EvaporationGEMFactory.hh" |
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| 43 | #include "G4HadronicException.hh" |
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| 44 | #include <numeric> |
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| 45 | |
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| 46 | G4Evaporation::G4Evaporation() |
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| 47 | { |
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| 48 | theChannelFactory = new G4EvaporationFactory(); |
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| 49 | theChannels = theChannelFactory->GetChannel(); |
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| 50 | } |
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| 51 | |
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| 52 | G4Evaporation::G4Evaporation(const G4Evaporation &) : G4VEvaporation() |
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| 53 | { |
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| 54 | throw G4HadronicException(__FILE__, __LINE__, "G4Evaporation::copy_constructor meant to not be accessable."); |
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| 55 | } |
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| 56 | |
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| 57 | |
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| 58 | G4Evaporation::~G4Evaporation() |
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| 59 | { |
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| 60 | if (theChannels != 0) theChannels = 0; |
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| 61 | if (theChannelFactory != 0) delete theChannelFactory; |
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| 62 | } |
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| 63 | |
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| 64 | const G4Evaporation & G4Evaporation::operator=(const G4Evaporation &) |
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| 65 | { |
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| 66 | throw G4HadronicException(__FILE__, __LINE__, "G4Evaporation::operator= meant to not be accessable."); |
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| 67 | return *this; |
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| 68 | } |
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| 69 | |
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| 70 | |
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| 71 | G4bool G4Evaporation::operator==(const G4Evaporation &) const |
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| 72 | { |
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| 73 | return false; |
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| 74 | } |
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| 75 | |
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| 76 | G4bool G4Evaporation::operator!=(const G4Evaporation &) const |
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| 77 | { |
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| 78 | return true; |
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| 79 | } |
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| 80 | |
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| 81 | |
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| 82 | void G4Evaporation::SetDefaultChannel() |
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| 83 | { |
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| 84 | if (theChannelFactory != 0) delete theChannelFactory; |
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| 85 | theChannelFactory = new G4EvaporationFactory(); |
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| 86 | theChannels = theChannelFactory->GetChannel(); |
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| 87 | } |
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| 88 | |
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| 89 | void G4Evaporation::SetGEMChannel() |
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| 90 | { |
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| 91 | if (theChannelFactory != 0) delete theChannelFactory; |
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| 92 | theChannelFactory = new G4EvaporationGEMFactory(); |
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| 93 | theChannels = theChannelFactory->GetChannel(); |
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| 94 | } |
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| 95 | |
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| 96 | G4FragmentVector * G4Evaporation::BreakItUp(const G4Fragment &theNucleus) |
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| 97 | { |
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| 98 | G4FragmentVector * theResult = new G4FragmentVector; |
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| 99 | |
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| 100 | // CHECK that Excitation Energy != 0 |
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| 101 | if (theNucleus.GetExcitationEnergy() <= 0.0) { |
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| 102 | theResult->push_back(new G4Fragment(theNucleus)); |
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| 103 | return theResult; |
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| 104 | } |
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| 105 | |
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| 106 | // The residual nucleus (after evaporation of each fragment) |
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| 107 | G4Fragment theResidualNucleus = theNucleus; |
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| 108 | |
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| 109 | // Number of channels |
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| 110 | G4int TotNumberOfChannels = theChannels->size(); |
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| 111 | |
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| 112 | // Starts loop over evaporated particles |
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| 113 | for (;;) |
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[962] | 114 | |
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| 115 | { |
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[819] | 116 | // loop over evaporation channels |
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| 117 | std::vector<G4VEvaporationChannel*>::iterator i; |
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| 118 | for (i=theChannels->begin(); i != theChannels->end(); i++) |
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| 119 | { |
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[962] | 120 | // for inverse cross section choice |
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| 121 | (*i)->SetOPTxs(OPTxs); |
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| 122 | // for superimposed Coulomb Barrier for inverse cross sections |
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| 123 | (*i)->UseSICB(useSICB); |
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| 124 | |
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[819] | 125 | (*i)->Initialize(theResidualNucleus); |
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| 126 | } |
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| 127 | // Can't use this form beacuse Initialize is a non const member function |
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| 128 | // for_each(theChannels->begin(),theChannels->end(), |
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| 129 | // bind2nd(mem_fun(&G4VEvaporationChannel::Initialize),theResidualNucleus)); |
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| 130 | // Work out total decay probability by summing over channels |
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| 131 | G4double TotalProbability = std::accumulate(theChannels->begin(), |
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| 132 | theChannels->end(), |
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| 133 | 0.0,SumProbabilities()); |
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| 134 | |
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| 135 | if (TotalProbability <= 0.0) |
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| 136 | { |
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| 137 | // Will be no evaporation more |
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| 138 | // write information about residual nucleus |
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| 139 | theResult->push_back(new G4Fragment(theResidualNucleus)); |
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| 140 | break; |
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| 141 | } |
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| 142 | else |
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| 143 | { |
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| 144 | // Selection of evaporation channel, fission or gamma |
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| 145 | // G4double * EmissionProbChannel = new G4double(TotNumberOfChannels); |
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| 146 | std::vector<G4double> EmissionProbChannel; |
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| 147 | EmissionProbChannel.reserve(theChannels->size()); |
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| 148 | |
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| 149 | |
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| 150 | // EmissionProbChannel[0] = theChannels->at(0)->GetEmissionProbability(); |
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| 151 | |
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| 152 | |
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| 153 | G4double first = theChannels->front()->GetEmissionProbability(); |
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| 154 | |
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| 155 | EmissionProbChannel.push_back(first >0 ? first : 0); // index 0 |
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| 156 | |
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| 157 | |
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| 158 | // EmissionProbChannel.push_back(theChannels->front()->GetEmissionProbability()); // index 0 |
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| 159 | |
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| 160 | for (i= (theChannels->begin()+1); i != theChannels->end(); i++) |
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| 161 | { |
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| 162 | // EmissionProbChannel[i] = EmissionProbChannel[i-1] + |
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| 163 | // theChannels->at(i)->GetEmissionProbability(); |
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| 164 | // EmissionProbChannel.push_back(EmissionProbChannel.back() + (*i)->GetEmissionProbability()); |
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| 165 | first = (*i)->GetEmissionProbability(); |
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| 166 | EmissionProbChannel.push_back(first> 0? EmissionProbChannel.back() + first : EmissionProbChannel.back()); |
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| 167 | } |
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| 168 | |
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| 169 | G4double shoot = G4UniformRand() * TotalProbability; |
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| 170 | G4int j; |
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| 171 | for (j=0; j < TotNumberOfChannels; j++) |
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| 172 | { |
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| 173 | // if (shoot < EmissionProbChannel[i]) |
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| 174 | if (shoot < EmissionProbChannel[j]) |
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| 175 | break; |
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| 176 | } |
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| 177 | |
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| 178 | // delete [] EmissionProbChannel; |
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| 179 | EmissionProbChannel.clear(); |
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| 180 | |
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| 181 | if( j >= TotNumberOfChannels ) |
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| 182 | { |
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[962] | 183 | G4cerr << " Residual A: " << theResidualNucleus.GetA() << " Residual Z: " << theResidualNucleus.GetZ() << " Excitation Energy: " << theResidualNucleus.GetExcitationEnergy() << G4endl; |
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| 184 | G4cerr << " j has not chosen a channel, j = " << j << " TotNumberOfChannels " << TotNumberOfChannels << " Total Probability: " << TotalProbability << G4endl; |
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| 185 | for (j=0; j < TotNumberOfChannels; j++) |
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| 186 | { |
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| 187 | G4cerr << " j: " << j << " EmissionProbChannel: " << EmissionProbChannel[j] << " and shoot: " << shoot << " (<ProbChannel?) " << G4endl; |
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| 188 | } |
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[819] | 189 | throw G4HadronicException(__FILE__, __LINE__, "G4Evaporation::BreakItUp: Can't define emission probability of the channels!" ); |
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| 190 | } |
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| 191 | else |
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| 192 | { |
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| 193 | // Perform break-up |
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| 194 | G4FragmentVector * theEvaporationResult = (*theChannels)[j]->BreakUp(theResidualNucleus); |
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| 195 | |
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| 196 | #ifdef debug |
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| 197 | G4cout << "-----------------------------------------------------------\n"; |
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| 198 | G4cout << G4endl << " After the evaporation of a particle, testing conservation \n"; |
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| 199 | CheckConservation(theResidualNucleus,theEvaporationResult); |
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| 200 | G4cout << G4endl |
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| 201 | << "------------------------------------------------------------\n"; |
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| 202 | #endif |
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| 203 | |
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| 204 | // Check if chosen channel is fission (there are only two EXCITED fragments) |
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| 205 | // or the channel could not evaporate anything |
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| 206 | if ( theEvaporationResult->size() == 1 || |
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| 207 | ((*(theEvaporationResult->begin()))->GetExcitationEnergy() > 0.0 && |
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| 208 | (*(theEvaporationResult->end()-1))->GetExcitationEnergy() > 0.0) ) { |
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| 209 | // FISSION |
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| 210 | for (G4FragmentVector::iterator i = theEvaporationResult->begin(); |
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| 211 | i != theEvaporationResult->end(); ++i) |
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| 212 | { |
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| 213 | theResult->push_back(*(i)); |
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| 214 | } |
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| 215 | delete theEvaporationResult; |
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| 216 | break; |
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| 217 | } else { |
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| 218 | // EVAPORATION |
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| 219 | for (G4FragmentVector::iterator i = theEvaporationResult->begin(); |
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| 220 | i != theEvaporationResult->end()-1; ++i) |
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| 221 | { |
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| 222 | #ifdef PRECOMPOUND_TEST |
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| 223 | if ((*i)->GetA() == 0) (*i)->SetCreatorModel(G4String("G4PhotonEvaporation")); |
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| 224 | #endif |
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| 225 | theResult->push_back(*(i)); |
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| 226 | } |
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| 227 | theResidualNucleus = *(theEvaporationResult->back()); |
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| 228 | delete theEvaporationResult->back(); |
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| 229 | delete theEvaporationResult; |
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| 230 | #ifdef PRECOMPOUND_TEST |
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| 231 | theResidualNucleus.SetCreatorModel(G4String("ResidualNucleus")); |
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| 232 | #endif |
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[962] | 233 | |
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[819] | 234 | } |
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| 235 | } |
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| 236 | } |
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| 237 | } |
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| 238 | |
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| 239 | #ifdef debug |
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| 240 | G4cout << "======== Evaporation Conservation Test ===========\n" |
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| 241 | << "==================================================\n"; |
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| 242 | CheckConservation(theNucleus,theResult); |
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| 243 | G4cout << "==================================================\n"; |
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| 244 | #endif |
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| 245 | return theResult; |
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| 246 | } |
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| 247 | |
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| 248 | |
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| 249 | |
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| 250 | #ifdef debug |
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| 251 | void G4Evaporation::CheckConservation(const G4Fragment & theInitialState, |
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| 252 | G4FragmentVector * Result) const |
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| 253 | { |
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| 254 | G4double ProductsEnergy =0; |
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| 255 | G4ThreeVector ProductsMomentum; |
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| 256 | G4int ProductsA = 0; |
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| 257 | G4int ProductsZ = 0; |
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| 258 | for (G4FragmentVector::iterator h = Result->begin(); h != Result->end(); h++) { |
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| 259 | G4LorentzVector tmp = (*h)->GetMomentum(); |
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| 260 | ProductsEnergy += tmp.e(); |
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| 261 | ProductsMomentum += tmp.vect(); |
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| 262 | ProductsA += static_cast<G4int>((*h)->GetA()); |
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| 263 | ProductsZ += static_cast<G4int>((*h)->GetZ()); |
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| 264 | } |
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| 265 | |
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| 266 | if (ProductsA != theInitialState.GetA()) { |
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| 267 | G4cout << "!!!!!!!!!! Baryonic Number Conservation Violation !!!!!!!!!!" << G4endl; |
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| 268 | G4cout << "G4Evaporation.cc: Barionic Number Conservation test for evaporation fragments" |
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| 269 | << G4endl; |
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| 270 | G4cout << "Initial A = " << theInitialState.GetA() |
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| 271 | << " Fragments A = " << ProductsA << " Diference --> " |
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| 272 | << theInitialState.GetA() - ProductsA << G4endl; |
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| 273 | } |
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| 274 | if (ProductsZ != theInitialState.GetZ()) { |
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| 275 | G4cout << "!!!!!!!!!! Charge Conservation Violation !!!!!!!!!!" << G4endl; |
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| 276 | G4cout << "G4Evaporation.cc: Charge Conservation test for evaporation fragments" |
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| 277 | << G4endl; |
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| 278 | G4cout << "Initial Z = " << theInitialState.GetZ() |
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| 279 | << " Fragments Z = " << ProductsZ << " Diference --> " |
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| 280 | << theInitialState.GetZ() - ProductsZ << G4endl; |
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| 281 | } |
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| 282 | if (std::abs(ProductsEnergy-theInitialState.GetMomentum().e()) > 1.0*keV) { |
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| 283 | G4cout << "!!!!!!!!!! Energy Conservation Violation !!!!!!!!!!" << G4endl; |
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| 284 | G4cout << "G4Evaporation.cc: Energy Conservation test for evaporation fragments" |
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| 285 | << G4endl; |
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| 286 | G4cout << "Initial E = " << theInitialState.GetMomentum().e()/MeV << " MeV" |
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| 287 | << " Fragments E = " << ProductsEnergy/MeV << " MeV Diference --> " |
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| 288 | << (theInitialState.GetMomentum().e() - ProductsEnergy)/MeV << " MeV" << G4endl; |
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| 289 | } |
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| 290 | if (std::abs(ProductsMomentum.x()-theInitialState.GetMomentum().x()) > 1.0*keV || |
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| 291 | std::abs(ProductsMomentum.y()-theInitialState.GetMomentum().y()) > 1.0*keV || |
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| 292 | std::abs(ProductsMomentum.z()-theInitialState.GetMomentum().z()) > 1.0*keV) { |
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| 293 | G4cout << "!!!!!!!!!! Momentum Conservation Violation !!!!!!!!!!" << G4endl; |
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| 294 | G4cout << "G4Evaporation.cc: Momentum Conservation test for evaporation fragments" |
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| 295 | << G4endl; |
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| 296 | G4cout << "Initial P = " << theInitialState.GetMomentum().vect() << " MeV" |
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| 297 | << " Fragments P = " << ProductsMomentum << " MeV Diference --> " |
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| 298 | << theInitialState.GetMomentum().vect() - ProductsMomentum << " MeV" << G4endl; |
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| 299 | } |
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| 300 | return; |
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| 301 | } |
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| 302 | #endif |
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| 303 | |
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| 304 | |
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| 305 | |
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| 306 | |
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