[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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[962] | 26 | // 081024 G4NucleiPropertiesTable:: to G4NucleiProperties:: |
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| 27 | // |
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[819] | 28 | #include "G4QMDNucleus.hh" |
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| 29 | #include "G4Proton.hh" |
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| 30 | #include "G4Neutron.hh" |
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| 31 | #include "G4NucleiProperties.hh" |
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| 32 | |
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| 33 | #include <numeric> |
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| 34 | |
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| 35 | G4QMDNucleus::G4QMDNucleus() |
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| 36 | { |
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| 37 | G4QMDParameters* parameters = G4QMDParameters::GetInstance(); |
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| 38 | hbc = parameters->Get_hbc(); |
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| 39 | } |
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| 40 | |
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| 41 | |
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| 42 | |
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| 43 | G4QMDNucleus::~G4QMDNucleus() |
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| 44 | { |
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| 45 | ; |
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| 46 | } |
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| 47 | |
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| 48 | |
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| 49 | G4LorentzVector G4QMDNucleus::Get4Momentum() |
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| 50 | { |
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| 51 | G4LorentzVector p( 0 ); |
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| 52 | std::vector< G4QMDParticipant* >::iterator it; |
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| 53 | for ( it = participants.begin() ; it != participants.end() ; it++ ) |
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| 54 | p += (*it)->Get4Momentum(); |
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| 55 | |
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| 56 | return p; |
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| 57 | } |
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| 58 | |
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| 59 | |
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| 60 | |
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| 61 | G4int G4QMDNucleus::GetMassNumber() |
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| 62 | { |
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| 63 | |
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| 64 | G4int A = 0; |
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| 65 | std::vector< G4QMDParticipant* >::iterator it; |
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| 66 | for ( it = participants.begin() ; it != participants.end() ; it++ ) |
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| 67 | { |
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| 68 | if ( (*it)->GetDefinition() == G4Proton::Proton() |
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| 69 | || (*it)->GetDefinition() == G4Neutron::Neutron() ) |
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| 70 | A++; |
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| 71 | } |
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| 72 | |
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| 73 | return A; |
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| 74 | } |
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| 75 | |
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| 76 | |
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| 77 | |
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| 78 | G4int G4QMDNucleus::GetAtomicNumber() |
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| 79 | { |
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| 80 | G4int Z = 0; |
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| 81 | std::vector< G4QMDParticipant* >::iterator it; |
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| 82 | for ( it = participants.begin() ; it != participants.end() ; it++ ) |
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| 83 | { |
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| 84 | if ( (*it)->GetDefinition() == G4Proton::Proton() ) |
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| 85 | Z++; |
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| 86 | } |
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| 87 | return Z; |
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| 88 | } |
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| 89 | |
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| 90 | |
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| 91 | |
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| 92 | G4double G4QMDNucleus::GetNuclearMass() |
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| 93 | { |
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| 94 | |
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[962] | 95 | G4double mass = G4NucleiProperties::GetNuclearMass( GetMassNumber() , GetAtomicNumber() ); |
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[819] | 96 | |
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| 97 | if ( mass == 0.0 ) |
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| 98 | { |
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| 99 | |
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| 100 | G4int Z = GetAtomicNumber(); |
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| 101 | G4int A = GetMassNumber(); |
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| 102 | G4int N = A - Z; |
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| 103 | |
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| 104 | // Weizsacker-Bethe |
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| 105 | |
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| 106 | G4double Av = 16*MeV; |
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| 107 | G4double As = 17*MeV; |
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| 108 | G4double Ac = 0.7*MeV; |
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| 109 | G4double Asym = 23*MeV; |
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| 110 | |
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| 111 | G4double BE = Av * A |
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| 112 | - As * std::pow ( G4double ( A ) , 2.0/3.0 ) |
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| 113 | - Ac * Z*Z/std::pow ( G4double ( A ) , 1.0/3.0 ) |
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| 114 | - Asym * ( N - Z )* ( N - Z ) / A; |
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| 115 | |
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| 116 | mass = Z * G4Proton::Proton()->GetPDGMass() |
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| 117 | + N * G4Neutron::Neutron()->GetPDGMass() |
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| 118 | - BE; |
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| 119 | |
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| 120 | } |
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| 121 | |
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| 122 | return mass; |
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| 123 | } |
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| 124 | |
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| 125 | |
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| 126 | |
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| 127 | void G4QMDNucleus::CalEnergyAndAngularMomentumInCM() |
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| 128 | { |
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| 129 | |
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| 130 | //G4cout << "CalEnergyAndAngularMomentumInCM " << this->GetAtomicNumber() << " " << GetMassNumber() << G4endl; |
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| 131 | |
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| 132 | G4double gamma = Get4Momentum().gamma(); |
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| 133 | G4ThreeVector beta = Get4Momentum().v()/ Get4Momentum().e(); |
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| 134 | |
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| 135 | G4ThreeVector pcm0( 0.0 ) ; |
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| 136 | |
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| 137 | G4int n = GetTotalNumberOfParticipant(); |
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| 138 | pcm.resize( n ); |
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| 139 | |
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| 140 | for ( G4int i= 0; i < n ; i++ ) |
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| 141 | { |
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| 142 | G4ThreeVector p_i = GetParticipant( i )->GetMomentum(); |
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| 143 | |
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| 144 | G4double trans = gamma / ( gamma + 1.0 ) * p_i * beta; |
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| 145 | pcm[i] = p_i - trans*beta; |
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| 146 | |
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| 147 | pcm0 += pcm[i]; |
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| 148 | } |
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| 149 | |
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| 150 | pcm0 = pcm0 / double ( n ); |
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| 151 | |
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| 152 | //G4cout << "pcm0 " << pcm0 << G4endl; |
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| 153 | |
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| 154 | for ( G4int i= 0; i < n ; i++ ) |
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| 155 | { |
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| 156 | pcm[i] += -pcm0; |
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| 157 | //G4cout << "pcm " << i << " " << pcm[i] << G4endl; |
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| 158 | } |
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| 159 | |
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| 160 | |
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| 161 | G4double tmass = 0; |
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| 162 | G4ThreeVector rcm0( 0.0 ) ; |
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| 163 | rcm.resize( n ); |
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| 164 | es.resize( n ); |
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| 165 | |
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| 166 | for ( G4int i= 0; i < n ; i++ ) |
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| 167 | { |
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| 168 | G4ThreeVector ri = GetParticipant( i )->GetPosition(); |
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| 169 | G4double trans = gamma / ( gamma + 1.0 ) * ri * beta; |
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| 170 | |
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| 171 | es[i] = std::sqrt ( std::pow ( GetParticipant( i )->GetMass() , 2 ) + pcm[i]*pcm[i] ); |
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| 172 | |
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| 173 | rcm[i] = ri + trans*beta; |
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| 174 | |
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| 175 | rcm0 += rcm[i]*es[i]; |
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| 176 | |
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| 177 | tmass += es[i]; |
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| 178 | } |
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| 179 | |
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| 180 | rcm0 = rcm0/tmass; |
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| 181 | |
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| 182 | for ( G4int i= 0; i < n ; i++ ) |
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| 183 | { |
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| 184 | rcm[i] += -rcm0; |
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| 185 | //G4cout << "rcm " << i << " " << rcm[i] << G4endl; |
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| 186 | } |
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| 187 | |
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| 188 | // Angluar momentum |
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| 189 | |
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| 190 | G4ThreeVector rl ( 0.0 ); |
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| 191 | for ( G4int i= 0; i < n ; i++ ) |
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| 192 | { |
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| 193 | rl += rcm[i].cross ( pcm[i] ); |
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| 194 | } |
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| 195 | |
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| 196 | jj = int ( std::sqrt ( rl*rl / hbc ) + 0.5 ); |
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| 197 | |
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| 198 | |
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| 199 | // kinetic energy per nucleon in CM |
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| 200 | |
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| 201 | G4double totalMass = 0.0; |
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| 202 | for ( G4int i= 0; i < n ; i++ ) |
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| 203 | { |
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| 204 | // following two lines are equivalent |
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| 205 | //totalMass += GetParticipant( i )->GetDefinition()->GetPDGMass()/GeV; |
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| 206 | totalMass += GetParticipant( i )->GetMass(); |
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| 207 | } |
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| 208 | |
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| 209 | kineticEnergyPerNucleon = ( std::accumulate ( es.begin() , es.end() , 0.0 ) - totalMass )/n; |
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| 210 | |
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| 211 | // Total (not per nucleion ) Binding Energy |
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| 212 | bindingEnergy = ( std::accumulate ( es.begin() , es.end() , 0.0 ) -totalMass ) + potentialEnergy; |
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| 213 | |
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| 214 | //G4cout << "KineticEnergyPerNucleon in GeV " << kineticEnergyPerNucleon << G4endl; |
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| 215 | //G4cout << "KineticEnergySum in GeV " << std::accumulate ( es.begin() , es.end() , 0.0 ) - totalMass << G4endl; |
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| 216 | //G4cout << "PotentialEnergy in GeV " << potentialEnergy << G4endl; |
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| 217 | //G4cout << "BindingEnergy in GeV " << bindingEnergy << G4endl; |
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[962] | 218 | //G4cout << "G4BindingEnergy in GeV " << G4NucleiProperties::GetBindingEnergy( GetAtomicNumber() , GetMassNumber() )/GeV << G4endl; |
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[819] | 219 | |
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[962] | 220 | excitationEnergy = bindingEnergy + G4NucleiProperties::GetBindingEnergy( GetMassNumber() , GetAtomicNumber() )/GeV; |
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[819] | 221 | //G4cout << "excitationEnergy in GeV " << excitationEnergy << G4endl; |
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| 222 | if ( excitationEnergy < 0 ) excitationEnergy = 0.0; |
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| 223 | |
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| 224 | } |
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