[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 | // neutron_hp -- source file |
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| 27 | // J.P. Wellisch, Nov-1996 |
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| 28 | // A prototype of the low energy neutron transport model. |
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| 29 | // |
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| 30 | #include "G4NeutronHPInelasticBaseFS.hh" |
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| 31 | #include "G4Nucleus.hh" |
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| 32 | #include "G4NucleiPropertiesTable.hh" |
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| 33 | #include "G4He3.hh" |
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| 34 | #include "G4Alpha.hh" |
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| 35 | #include "G4Electron.hh" |
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| 36 | #include "G4NeutronHPDataUsed.hh" |
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| 37 | |
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| 38 | void G4NeutronHPInelasticBaseFS::InitGammas(G4double AR, G4double ZR) |
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| 39 | { |
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| 40 | // char the[100] = {""}; |
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| 41 | // std::ostrstream ost(the, 100, std::ios::out); |
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| 42 | // ost <<gammaPath<<"z"<<ZR<<".a"<<AR; |
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| 43 | // G4String * aName = new G4String(the); |
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| 44 | // std::ifstream from(*aName, std::ios::in); |
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| 45 | |
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| 46 | std::ostringstream ost; |
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| 47 | ost <<gammaPath<<"z"<<ZR<<".a"<<AR; |
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| 48 | G4String aName = ost.str(); |
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| 49 | std::ifstream from(aName, std::ios::in); |
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| 50 | |
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| 51 | if(!from) return; // no data found for this isotope |
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| 52 | // std::ifstream theGammaData(*aName, std::ios::in); |
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| 53 | std::ifstream theGammaData(aName, std::ios::in); |
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| 54 | |
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| 55 | G4double eps = 0.001; |
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| 56 | theNuclearMassDifference = |
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| 57 | G4NucleiPropertiesTable::GetBindingEnergy(static_cast<G4int>(ZR+eps),static_cast<G4int>(AR+eps)) - |
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| 58 | G4NucleiPropertiesTable::GetBindingEnergy(static_cast<G4int>(theBaseZ+eps), static_cast<G4int>(theBaseA+eps)); |
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| 59 | theGammas.Init(theGammaData); |
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| 60 | // delete aName; |
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| 61 | } |
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| 62 | |
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| 63 | void G4NeutronHPInelasticBaseFS::Init (G4double A, G4double Z, G4String & dirName, G4String & bit) |
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| 64 | { |
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| 65 | gammaPath = "/Inelastic/Gammas/"; |
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| 66 | if(!getenv("G4NEUTRONHPDATA")) |
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| 67 | throw G4HadronicException(__FILE__, __LINE__, "Please setenv G4NEUTRONHPDATA to point to the neutron cross-section files."); |
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| 68 | G4String tBase = getenv("G4NEUTRONHPDATA"); |
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| 69 | gammaPath = tBase+gammaPath; |
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| 70 | G4String tString = dirName; |
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| 71 | G4bool dbool; |
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| 72 | G4NeutronHPDataUsed aFile = theNames.GetName(static_cast<G4int>(A), static_cast<G4int>(Z), tString, bit, dbool); |
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| 73 | G4String filename = aFile.GetName(); |
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| 74 | theBaseA = aFile.GetA(); |
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| 75 | theBaseZ = aFile.GetZ(); |
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| 76 | if(!dbool || ( Z<2.5 && ( std::abs(theBaseZ - Z)>0.0001 || std::abs(theBaseA - A)>0.0001))) |
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| 77 | { |
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| 78 | if(getenv("NeutronHPNamesLogging")) G4cout << "Skipped = "<< filename <<" "<<A<<" "<<Z<<G4endl; |
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| 79 | hasAnyData = false; |
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| 80 | hasFSData = false; |
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| 81 | hasXsec = false; |
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| 82 | return; |
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| 83 | } |
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| 84 | theBaseA = A; |
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| 85 | theBaseZ = G4int(Z+.5); |
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| 86 | std::ifstream theData(filename, std::ios::in); |
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| 87 | if(!(theData)) |
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| 88 | { |
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| 89 | hasAnyData = false; |
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| 90 | hasFSData = false; |
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| 91 | hasXsec = false; |
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| 92 | theData.close(); |
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| 93 | return; // no data for exactly this isotope and FS |
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| 94 | } |
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| 95 | // here we go |
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| 96 | G4int infoType, dataType, dummy=INT_MAX; |
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| 97 | hasFSData = false; |
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| 98 | while (theData >> infoType) |
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| 99 | { |
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| 100 | theData >> dataType; |
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| 101 | if(dummy==INT_MAX) theData >> dummy >> dummy; |
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| 102 | if(dataType==3) |
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| 103 | { |
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| 104 | G4int total; |
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| 105 | theData >> total; |
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| 106 | theXsection->Init(theData, total, eV); |
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| 107 | } |
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| 108 | else if(dataType==4) |
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| 109 | { |
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| 110 | theAngularDistribution = new G4NeutronHPAngular; |
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| 111 | theAngularDistribution->Init(theData); |
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| 112 | hasFSData = true; |
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| 113 | } |
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| 114 | else if(dataType==5) |
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| 115 | { |
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| 116 | theEnergyDistribution = new G4NeutronHPEnergyDistribution; |
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| 117 | theEnergyDistribution->Init(theData); |
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| 118 | hasFSData = true; |
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| 119 | } |
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| 120 | else if(dataType==6) |
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| 121 | { |
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| 122 | theEnergyAngData = new G4NeutronHPEnAngCorrelation; |
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| 123 | theEnergyAngData->Init(theData); |
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| 124 | hasFSData = true; |
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| 125 | } |
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| 126 | else if(dataType==12) |
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| 127 | { |
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| 128 | theFinalStatePhotons = new G4NeutronHPPhotonDist; |
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| 129 | theFinalStatePhotons->InitMean(theData); |
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| 130 | hasFSData = true; |
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| 131 | } |
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| 132 | else if(dataType==13) |
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| 133 | { |
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| 134 | theFinalStatePhotons = new G4NeutronHPPhotonDist; |
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| 135 | theFinalStatePhotons->InitPartials(theData); |
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| 136 | hasFSData = true; |
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| 137 | } |
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| 138 | else if(dataType==14) |
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| 139 | { |
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| 140 | theFinalStatePhotons->InitAngular(theData); |
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| 141 | hasFSData = true; |
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| 142 | } |
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| 143 | else if(dataType==15) |
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| 144 | { |
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| 145 | theFinalStatePhotons->InitEnergies(theData); |
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| 146 | hasFSData = true; |
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| 147 | } |
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| 148 | else |
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| 149 | { |
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| 150 | throw G4HadronicException(__FILE__, __LINE__, "Data-type unknown to G4NeutronHPInelasticBaseFS"); |
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| 151 | } |
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| 152 | } |
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| 153 | theData.close(); |
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| 154 | } |
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| 155 | |
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| 156 | void G4NeutronHPInelasticBaseFS::BaseApply(const G4HadProjectile & theTrack, |
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| 157 | G4ParticleDefinition ** theDefs, |
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| 158 | G4int nDef) |
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| 159 | { |
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| 160 | |
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| 161 | // prepare neutron |
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| 162 | theResult.Clear(); |
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| 163 | G4double eKinetic = theTrack.GetKineticEnergy(); |
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| 164 | const G4HadProjectile *incidentParticle = &theTrack; |
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| 165 | G4ReactionProduct theNeutron( const_cast<G4ParticleDefinition *>(incidentParticle->GetDefinition()) ); |
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| 166 | theNeutron.SetMomentum( incidentParticle->Get4Momentum().vect() ); |
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| 167 | theNeutron.SetKineticEnergy( eKinetic ); |
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| 168 | |
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| 169 | // prepare target |
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| 170 | G4double targetMass; |
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| 171 | G4double eps = 0.0001; |
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| 172 | targetMass = ( G4NucleiPropertiesTable::GetNuclearMass(static_cast<G4int>(theBaseZ+eps), static_cast<G4int>(theBaseA+eps))) / |
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| 173 | G4Neutron::Neutron()->GetPDGMass(); |
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| 174 | if(theEnergyAngData!=0) |
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| 175 | { targetMass = theEnergyAngData->GetTargetMass(); } |
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| 176 | if(theAngularDistribution!=0) |
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| 177 | { targetMass = theAngularDistribution->GetTargetMass(); } |
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| 178 | G4Nucleus aNucleus; |
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| 179 | G4ReactionProduct theTarget; |
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| 180 | G4ThreeVector neuVelo = (1./incidentParticle->GetDefinition()->GetPDGMass())*theNeutron.GetMomentum(); |
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| 181 | theTarget = aNucleus.GetBiasedThermalNucleus( targetMass, neuVelo, theTrack.GetMaterial()->GetTemperature()); |
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| 182 | |
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| 183 | // prepare energy in target rest frame |
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| 184 | G4ReactionProduct boosted; |
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| 185 | boosted.Lorentz(theNeutron, theTarget); |
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| 186 | eKinetic = boosted.GetKineticEnergy(); |
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| 187 | G4double orgMomentum = boosted.GetMomentum().mag(); |
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| 188 | |
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| 189 | // Take N-body phase-space distribution, if no other data present. |
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| 190 | if(!HasFSData()) // adding the residual is trivial here @@@ |
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| 191 | { |
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| 192 | G4NeutronHPNBodyPhaseSpace thePhaseSpaceDistribution; |
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| 193 | G4double aPhaseMass=0; |
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| 194 | G4int ii; |
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| 195 | for(ii=0; ii<nDef; ii++) |
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| 196 | { |
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| 197 | aPhaseMass+=theDefs[ii]->GetPDGMass(); |
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| 198 | } |
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| 199 | thePhaseSpaceDistribution.Init(aPhaseMass, nDef); |
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| 200 | thePhaseSpaceDistribution.SetNeutron(&theNeutron); |
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| 201 | thePhaseSpaceDistribution.SetTarget(&theTarget); |
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| 202 | for(ii=0; ii<nDef; ii++) |
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| 203 | { |
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| 204 | G4double massCode = 1000.*std::abs(theDefs[ii]->GetPDGCharge()); |
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| 205 | massCode += theDefs[ii]->GetBaryonNumber(); |
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| 206 | G4double dummy = 0; |
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| 207 | G4ReactionProduct * aSec = thePhaseSpaceDistribution.Sample(eKinetic, massCode, dummy); |
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| 208 | aSec->Lorentz(*aSec, -1.*theTarget); |
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| 209 | G4DynamicParticle * aPart = new G4DynamicParticle(); |
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| 210 | aPart->SetDefinition(aSec->GetDefinition()); |
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| 211 | aPart->SetMomentum(aSec->GetMomentum()); |
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| 212 | delete aSec; |
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| 213 | theResult.AddSecondary(aPart); |
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| 214 | } |
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| 215 | theResult.SetStatusChange(stopAndKill); |
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| 216 | return; |
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| 217 | } |
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| 218 | |
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| 219 | // set target and neutron in the relevant exit channel |
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| 220 | if(theAngularDistribution!=0) |
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| 221 | { |
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| 222 | theAngularDistribution->SetTarget(theTarget); |
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| 223 | theAngularDistribution->SetNeutron(theNeutron); |
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| 224 | } |
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| 225 | else if(theEnergyAngData!=0) |
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| 226 | { |
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| 227 | theEnergyAngData->SetTarget(theTarget); |
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| 228 | theEnergyAngData->SetNeutron(theNeutron); |
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| 229 | } |
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| 230 | |
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| 231 | G4ReactionProductVector * tmpHadrons = 0; |
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| 232 | G4int ii, dummy; |
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| 233 | unsigned int i; |
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| 234 | if(theEnergyAngData != 0) |
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| 235 | { |
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| 236 | tmpHadrons = theEnergyAngData->Sample(eKinetic); |
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| 237 | } |
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| 238 | else if(theAngularDistribution!= 0) |
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| 239 | { |
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| 240 | G4bool * Done = new G4bool[nDef]; |
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| 241 | G4int i0; |
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| 242 | for(i0=0; i0<nDef; i0++) Done[i0] = false; |
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| 243 | if(tmpHadrons == 0) |
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| 244 | { |
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| 245 | tmpHadrons = new G4ReactionProductVector; |
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| 246 | } |
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| 247 | else |
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| 248 | { |
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| 249 | for(i=0; i<tmpHadrons->size(); i++) |
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| 250 | { |
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| 251 | for(ii=0; ii<nDef; ii++) |
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| 252 | if(!Done[ii] && tmpHadrons->operator[](i)->GetDefinition() == theDefs[ii]) |
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| 253 | Done[ii] = true; |
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| 254 | } |
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| 255 | } |
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| 256 | G4ReactionProduct * aHadron; |
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| 257 | G4double localMass = ( G4NucleiPropertiesTable::GetNuclearMass(static_cast<G4int>(theBaseZ+eps), static_cast<G4int>(theBaseA+eps))); |
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| 258 | G4ThreeVector bufferedDirection(0,0,0); |
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| 259 | for(i0=0; i0<nDef; i0++) |
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| 260 | { |
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| 261 | if(!Done[i0]) |
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| 262 | { |
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| 263 | aHadron = new G4ReactionProduct; |
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| 264 | if(theEnergyDistribution!=0) |
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| 265 | { |
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| 266 | aHadron->SetDefinition(theDefs[i0]); |
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| 267 | aHadron->SetKineticEnergy(theEnergyDistribution->Sample(eKinetic, dummy)); |
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| 268 | } |
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| 269 | else if(nDef == 1) |
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| 270 | { |
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| 271 | aHadron->SetDefinition(theDefs[i0]); |
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| 272 | aHadron->SetKineticEnergy(eKinetic); |
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| 273 | } |
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| 274 | else if(nDef == 2) |
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| 275 | { |
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| 276 | aHadron->SetDefinition(theDefs[i0]); |
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| 277 | aHadron->SetKineticEnergy(50*MeV); |
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| 278 | } |
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| 279 | else |
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| 280 | { |
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| 281 | throw G4HadronicException(__FILE__, __LINE__, "No energy distribution to sample from in InelasticBaseFS::BaseApply"); |
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| 282 | } |
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| 283 | theAngularDistribution->SampleAndUpdate(*aHadron); |
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| 284 | if(theEnergyDistribution==0 && nDef == 2) |
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| 285 | { |
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| 286 | if(i0==0) |
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| 287 | { |
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| 288 | G4double m1 = theDefs[0]->GetPDGMass(); |
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| 289 | G4double m2 = theDefs[1]->GetPDGMass(); |
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| 290 | G4double mn = G4Neutron::Neutron()->GetPDGMass(); |
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| 291 | G4int z1 = static_cast<G4int>(theBaseZ+eps-theDefs[0]->GetPDGCharge()-theDefs[1]->GetPDGCharge()); |
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| 292 | G4int a1 = static_cast<G4int>(theBaseA+eps)-theDefs[0]->GetBaryonNumber()-theDefs[1]->GetBaryonNumber(); |
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| 293 | G4double concreteMass = G4NucleiPropertiesTable::GetNuclearMass(z1, a1); |
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| 294 | G4double availableEnergy = eKinetic+mn+localMass-m1-m2-concreteMass; |
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| 295 | // available kinetic energy in CMS (non relativistic) |
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| 296 | G4double emin = availableEnergy+m1+m2 - std::sqrt((m1+m2)*(m1+m2)+orgMomentum*orgMomentum); |
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| 297 | G4double p1=std::sqrt(2.*m2*emin); |
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| 298 | bufferedDirection = p1*aHadron->GetMomentum().unit(); |
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| 299 | if(getenv("HTOKEN")) // @@@@@ verify the nucleon counting... |
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| 300 | { |
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| 301 | G4cout << "HTOKEN "<<z1<<" "<<theBaseZ<<" "<<a1<<" "<<theBaseA<<" "<<availableEnergy<<" " |
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| 302 | << emin<<G4endl; |
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| 303 | } |
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| 304 | } |
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| 305 | else |
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| 306 | { |
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| 307 | bufferedDirection = -bufferedDirection; |
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| 308 | } |
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| 309 | // boost from cms to lab |
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| 310 | if(getenv("HTOKEN")) |
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| 311 | { |
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| 312 | G4cout << " HTOKEN "<<bufferedDirection.mag2()<<G4endl; |
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| 313 | } |
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| 314 | aHadron->SetTotalEnergy( std::sqrt(aHadron->GetMass()*aHadron->GetMass() |
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| 315 | +bufferedDirection.mag2()) ); |
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| 316 | aHadron->SetMomentum(bufferedDirection); |
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| 317 | aHadron->Lorentz(*aHadron, -1.*(theTarget+theNeutron)); |
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| 318 | if(getenv("HTOKEN")) |
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| 319 | { |
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| 320 | G4cout << " HTOKEN "<<aHadron->GetTotalEnergy()<<" "<<aHadron->GetMomentum()<<G4endl; |
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| 321 | } |
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| 322 | } |
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| 323 | tmpHadrons->push_back(aHadron); |
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| 324 | } |
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| 325 | } |
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| 326 | delete [] Done; |
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| 327 | } |
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| 328 | else |
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| 329 | { |
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| 330 | throw G4HadronicException(__FILE__, __LINE__, "No data to create the neutrons in NInelasticFS"); |
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| 331 | } |
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| 332 | |
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| 333 | G4ReactionProductVector * thePhotons = 0; |
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| 334 | if(theFinalStatePhotons!=0) |
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| 335 | { |
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| 336 | // the photon distributions are in the Nucleus rest frame. |
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| 337 | G4ReactionProduct boosted; |
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| 338 | boosted.Lorentz(theNeutron, theTarget); |
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| 339 | G4double anEnergy = boosted.GetKineticEnergy(); |
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| 340 | thePhotons = theFinalStatePhotons->GetPhotons(anEnergy); |
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| 341 | if(thePhotons!=0) |
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| 342 | { |
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| 343 | for(i=0; i<thePhotons->size(); i++) |
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| 344 | { |
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| 345 | // back to lab |
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| 346 | thePhotons->operator[](i)->Lorentz(*(thePhotons->operator[](i)), -1.*theTarget); |
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| 347 | } |
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| 348 | } |
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| 349 | } |
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| 350 | else if(theEnergyAngData!=0) |
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| 351 | { |
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| 352 | G4double theGammaEnergy = theEnergyAngData->GetTotalMeanEnergy(); |
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| 353 | G4double anEnergy = boosted.GetKineticEnergy(); |
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| 354 | theGammaEnergy = anEnergy-theGammaEnergy; |
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| 355 | theGammaEnergy += theNuclearMassDifference; |
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| 356 | G4double eBindProducts = 0; |
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| 357 | G4double eBindN = 0; |
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| 358 | G4double eBindP = 0; |
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| 359 | G4double eBindD = G4NucleiPropertiesTable::GetBindingEnergy(1,2); |
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| 360 | G4double eBindT = G4NucleiPropertiesTable::GetBindingEnergy(1,3); |
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| 361 | G4double eBindHe3 = G4NucleiPropertiesTable::GetBindingEnergy(2,3); |
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| 362 | G4double eBindA = G4NucleiPropertiesTable::GetBindingEnergy(2,4); |
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| 363 | for(i=0; i<tmpHadrons->size(); i++) |
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| 364 | { |
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| 365 | if(tmpHadrons->operator[](i)->GetDefinition() == G4Neutron::Neutron()) |
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| 366 | { |
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| 367 | eBindProducts+=eBindN; |
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| 368 | } |
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| 369 | else if(tmpHadrons->operator[](i)->GetDefinition() == G4Proton::Proton()) |
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| 370 | { |
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| 371 | eBindProducts+=eBindP; |
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| 372 | } |
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| 373 | else if(tmpHadrons->operator[](i)->GetDefinition() == G4Deuteron::Deuteron()) |
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| 374 | { |
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| 375 | eBindProducts+=eBindD; |
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| 376 | } |
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| 377 | else if(tmpHadrons->operator[](i)->GetDefinition() == G4Triton::Triton()) |
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| 378 | { |
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| 379 | eBindProducts+=eBindT; |
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| 380 | } |
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| 381 | else if(tmpHadrons->operator[](i)->GetDefinition() == G4He3::He3()) |
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| 382 | { |
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| 383 | eBindProducts+=eBindHe3; |
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| 384 | } |
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| 385 | else if(tmpHadrons->operator[](i)->GetDefinition() == G4Alpha::Alpha()) |
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| 386 | { |
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| 387 | eBindProducts+=eBindA; |
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| 388 | } |
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| 389 | } |
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| 390 | theGammaEnergy += eBindProducts; |
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| 391 | |
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| 392 | G4ReactionProductVector * theOtherPhotons = 0; |
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| 393 | G4int iLevel; |
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| 394 | while(theGammaEnergy>=theGammas.GetLevelEnergy(0)) |
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| 395 | { |
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| 396 | for(iLevel=theGammas.GetNumberOfLevels()-1; iLevel>=0; iLevel--) |
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| 397 | { |
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| 398 | if(theGammas.GetLevelEnergy(iLevel)<theGammaEnergy) break; |
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| 399 | } |
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| 400 | if(iLevel==0||iLevel==theGammas.GetNumberOfLevels()-1) |
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| 401 | { |
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| 402 | theOtherPhotons = theGammas.GetDecayGammas(iLevel); |
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| 403 | } |
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| 404 | else |
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| 405 | { |
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| 406 | G4double random = G4UniformRand(); |
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| 407 | G4double eLow = theGammas.GetLevelEnergy(iLevel); |
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| 408 | G4double eHigh = theGammas.GetLevelEnergy(iLevel+1); |
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| 409 | if(random > (eHigh-eLow)/(theGammaEnergy-eLow)) iLevel++; |
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| 410 | theOtherPhotons = theGammas.GetDecayGammas(iLevel); |
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| 411 | } |
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| 412 | if(thePhotons==0) thePhotons = new G4ReactionProductVector; |
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| 413 | if(theOtherPhotons != 0) |
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| 414 | { |
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| 415 | for(unsigned int ii=0; ii<theOtherPhotons->size(); ii++) |
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| 416 | { |
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| 417 | thePhotons->push_back(theOtherPhotons->operator[](ii)); |
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| 418 | } |
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| 419 | delete theOtherPhotons; |
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| 420 | } |
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| 421 | theGammaEnergy -= theGammas.GetLevelEnergy(iLevel); |
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| 422 | if(iLevel == -1) break; |
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| 423 | } |
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| 424 | } |
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| 425 | |
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| 426 | // fill the result |
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| 427 | unsigned int nSecondaries = tmpHadrons->size(); |
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| 428 | unsigned int nPhotons = 0; |
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| 429 | if(thePhotons!=0) { nPhotons = thePhotons->size(); } |
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| 430 | nSecondaries += nPhotons; |
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| 431 | G4DynamicParticle * theSec; |
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| 432 | |
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| 433 | for(i=0; i<nSecondaries-nPhotons; i++) |
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| 434 | { |
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| 435 | theSec = new G4DynamicParticle; |
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| 436 | theSec->SetDefinition(tmpHadrons->operator[](i)->GetDefinition()); |
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| 437 | theSec->SetMomentum(tmpHadrons->operator[](i)->GetMomentum()); |
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| 438 | theResult.AddSecondary(theSec); |
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| 439 | delete tmpHadrons->operator[](i); |
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| 440 | } |
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| 441 | if(thePhotons != 0) |
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| 442 | { |
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| 443 | for(i=0; i<nPhotons; i++) |
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| 444 | { |
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| 445 | theSec = new G4DynamicParticle; |
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| 446 | theSec->SetDefinition(thePhotons->operator[](i)->GetDefinition()); |
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| 447 | theSec->SetMomentum(thePhotons->operator[](i)->GetMomentum()); |
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| 448 | theResult.AddSecondary(theSec); |
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| 449 | delete thePhotons->operator[](i); |
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| 450 | } |
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| 451 | } |
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| 452 | |
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| 453 | // some garbage collection |
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| 454 | delete thePhotons; |
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| 455 | delete tmpHadrons; |
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| 456 | |
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| 457 | // clean up the primary neutron |
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| 458 | theResult.SetStatusChange(stopAndKill); |
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| 459 | } |
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