[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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| 27 | // Implementation of the HETC88 code into Geant4. |
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| 28 | // Evaporation and De-excitation parts |
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| 29 | // T. Lampen, Helsinki Institute of Physics, May-2000 |
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| 30 | |
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| 31 | #include "globals.hh" |
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| 32 | #include "G4ios.hh" |
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| 33 | #include "Randomize.hh" |
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| 34 | #include "G4Neutron.hh" |
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| 35 | #include "G4Proton.hh" |
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| 36 | #include "G4Deuteron.hh" |
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| 37 | #include "G4Triton.hh" |
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| 38 | #include "G4Alpha.hh" |
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| 39 | #include "G4Nucleus.hh" |
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| 40 | #include "G4BEGammaDeexcitation.hh" |
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| 41 | |
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| 42 | |
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| 43 | G4BEGammaDeexcitation::G4BEGammaDeexcitation() |
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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 | G4BEGammaDeexcitation::~G4BEGammaDeexcitation() |
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| 49 | { |
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| 50 | } |
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| 51 | |
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| 52 | |
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| 53 | void G4BEGammaDeexcitation::setVerboseLevel( G4int level ) |
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| 54 | { |
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| 55 | verboseLevel = level ; |
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| 56 | } |
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| 57 | |
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| 58 | |
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| 59 | void G4BEGammaDeexcitation::setNucleusA( G4int a ) |
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| 60 | { |
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| 61 | nucleusA = a; |
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| 62 | } |
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| 63 | |
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| 64 | |
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| 65 | void G4BEGammaDeexcitation::setNucleusZ( G4int z ) |
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| 66 | { |
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| 67 | nucleusZ = z; |
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| 68 | } |
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| 69 | |
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| 70 | |
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| 71 | void G4BEGammaDeexcitation::setExcitationEnergy( G4double energy ) |
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| 72 | { |
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| 73 | excitationEnergy = energy; |
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| 74 | } |
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| 75 | |
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| 76 | |
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| 77 | G4double G4BEGammaDeexcitation::sampleKineticEnergy() |
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| 78 | { |
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| 79 | return excitationEnergy * G4UniformRand(); |
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| 80 | } |
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| 81 | |
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| 82 | |
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| 83 | G4DynamicParticle * G4BEGammaDeexcitation::emit() |
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| 84 | { |
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| 85 | // Isotropic distribution assumed to gammas |
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| 86 | G4double u, v, w; |
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| 87 | G4DynamicParticle * pParticle = new G4DynamicParticle; |
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| 88 | pParticle -> SetDefinition( G4Gamma::Gamma() ); |
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| 89 | pParticle -> SetKineticEnergy( sampleKineticEnergy() ); |
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| 90 | isotropicCosines( u, v, w ); |
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| 91 | pParticle -> SetMomentumDirection( u, v, w ); |
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| 92 | return pParticle; |
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| 93 | } |
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| 94 | |
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| 95 | |
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| 96 | void G4BEGammaDeexcitation::isotropicCosines( G4double & u, |
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| 97 | G4double & v, |
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| 98 | G4double & w ) |
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| 99 | { |
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| 100 | // Samples isotropic random direction cosines. |
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| 101 | G4double CosTheta = 1.0 - 2.0 * G4UniformRand(); |
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| 102 | G4double SinTheta = std::sqrt( 1.0 - CosTheta * CosTheta ); |
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| 103 | G4double Phi = twopi * G4UniformRand(); |
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| 104 | |
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| 105 | u = std::cos( Phi ) * SinTheta; |
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| 106 | v = std::cos( Phi ) * CosTheta, |
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| 107 | w = std::sin( Phi ); |
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| 108 | |
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| 109 | return; |
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| 110 | } |
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