| 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 | // $Id: G4eeToTwoGammaModel.hh,v 1.14 2007/05/23 08:47:34 vnivanch Exp $ |
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| 27 | // GEANT4 tag $Name: geant4-09-02 $ |
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| 28 | // |
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| 29 | // ------------------------------------------------------------------- |
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| 30 | // |
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| 31 | // GEANT4 Class header file |
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| 32 | // |
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| 33 | // |
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| 34 | // File name: G4eeToTwoGammaModel |
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| 35 | // |
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| 36 | // Author: Vladimir Ivanchenko on base of Michel Maire code |
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| 37 | // |
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| 38 | // Creation date: 02.08.2004 |
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| 39 | // |
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| 40 | // Modifications: |
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| 41 | // 08-04-05 Major optimisation of internal interfaces (V.Ivanchenko) |
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| 42 | // 18-04-05 Compute CrossSectionPerVolume (V.Ivanchenko) |
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| 43 | // 06-02-06 ComputeCrossSectionPerElectron, ComputeCrossSectionPerAtom (mma) |
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| 44 | // 20-10-06 Add theGamma as a member (V.Ivanchenko) |
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| 45 | // |
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| 46 | // |
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| 47 | // Class Description: |
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| 48 | // |
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| 49 | // Implementation of e+ annihilation into 2 gamma |
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| 50 | |
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| 51 | // ------------------------------------------------------------------- |
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| 52 | // |
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| 53 | |
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| 54 | #ifndef G4eeToTwoGammaModel_h |
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| 55 | #define G4eeToTwoGammaModel_h 1 |
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| 56 | |
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| 57 | #include "G4VEmModel.hh" |
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| 58 | |
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| 59 | class G4ParticleChangeForGamma; |
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| 60 | |
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| 61 | class G4eeToTwoGammaModel : public G4VEmModel |
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| 62 | { |
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| 63 | |
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| 64 | public: |
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| 65 | |
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| 66 | G4eeToTwoGammaModel(const G4ParticleDefinition* p = 0, |
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| 67 | const G4String& nam = "eplus2gg"); |
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| 68 | |
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| 69 | virtual ~G4eeToTwoGammaModel(); |
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| 70 | |
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| 71 | virtual void Initialise(const G4ParticleDefinition*, const G4DataVector&); |
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| 72 | |
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| 73 | virtual G4double ComputeCrossSectionPerElectron( |
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| 74 | const G4ParticleDefinition*, |
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| 75 | G4double kinEnergy, |
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| 76 | G4double cutEnergy = 0., |
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| 77 | G4double maxEnergy = DBL_MAX); |
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| 78 | |
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| 79 | virtual G4double ComputeCrossSectionPerAtom( |
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| 80 | const G4ParticleDefinition*, |
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| 81 | G4double kinEnergy, |
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| 82 | G4double Z, |
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| 83 | G4double A = 0., |
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| 84 | G4double cutEnergy = 0., |
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| 85 | G4double maxEnergy = DBL_MAX); |
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| 86 | |
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| 87 | virtual G4double CrossSectionPerVolume(const G4Material*, |
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| 88 | const G4ParticleDefinition*, |
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| 89 | G4double kineticEnergy, |
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| 90 | G4double cutEnergy, |
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| 91 | G4double maxEnergy); |
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| 92 | |
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| 93 | virtual void SampleSecondaries(std::vector<G4DynamicParticle*>*, |
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| 94 | const G4MaterialCutsCouple*, |
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| 95 | const G4DynamicParticle*, |
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| 96 | G4double tmin, |
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| 97 | G4double maxEnergy); |
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| 98 | |
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| 99 | private: |
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| 100 | |
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| 101 | // hide assignment operator |
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| 102 | G4eeToTwoGammaModel & operator=(const G4eeToTwoGammaModel &right); |
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| 103 | G4eeToTwoGammaModel(const G4eeToTwoGammaModel&); |
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| 104 | |
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| 105 | G4double pi_rcl2; |
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| 106 | G4ParticleDefinition* theGamma; |
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| 107 | G4ParticleChangeForGamma* fParticleChange; |
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| 108 | G4bool isInitialised; |
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| 109 | }; |
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| 110 | |
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| 111 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo...... |
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| 112 | |
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| 113 | #endif |
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