| 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: G4eeToPGammaModel.hh,v 1.1 2008/07/10 18:07:26 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: G4eeToPGammaModel
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| 35 | //
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| 36 | // Author: Vladimir Ivanchenko
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| 37 | //
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| 38 | // Creation date: 10.07.2008
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| 39 | //
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| 40 | // Modifications:
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| 41 | //
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| 42 |
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| 43 | //
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| 44 | // Class Description:
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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 |
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| 50 | #ifndef G4eeToPGammaModel_h
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| 51 | #define G4eeToPGammaModel_h 1
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| 52 |
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| 53 | #include "G4Vee2hadrons.hh"
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| 54 | #include "globals.hh"
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| 55 | #include "G4eeCrossSections.hh"
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| 56 | #include "G4ParticleDefinition.hh"
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| 57 |
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| 58 | class G4DynamicParticle;
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| 59 | class G4PhysicsVector;
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| 60 |
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| 61 | class G4eeToPGammaModel : public G4Vee2hadrons
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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 | G4eeToPGammaModel(G4eeCrossSections*, const G4String&);
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| 67 |
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| 68 | virtual ~G4eeToPGammaModel();
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| 69 |
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| 70 | G4double ThresholdEnergy() const;
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| 71 |
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| 72 | G4double PeakEnergy() const;
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| 73 |
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| 74 | G4double ComputeCrossSection(G4double) const;
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| 75 |
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| 76 | G4PhysicsVector* PhysicsVector(G4double, G4double) const;
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| 77 |
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| 78 | virtual void SampleSecondaries(std::vector<G4DynamicParticle*>*,
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| 79 | G4double, const G4ThreeVector&);
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| 80 |
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| 81 | private:
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| 82 |
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| 83 | // hide assignment operator
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| 84 | G4eeToPGammaModel & operator=(const G4eeToPGammaModel &right);
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| 85 | G4eeToPGammaModel(const G4eeToPGammaModel&);
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| 86 |
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| 87 | G4eeCrossSections* cross;
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| 88 |
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| 89 | G4ParticleDefinition* particle;
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| 90 | G4ParticleDefinition* pi0;
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| 91 |
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| 92 | G4double massP;
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| 93 | G4double massR;
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| 94 |
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| 95 | };
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| 96 |
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| 97 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
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| 98 |
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| 99 | inline G4double G4eeToPGammaModel::ThresholdEnergy() const
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| 100 | {
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| 101 | return LowEnergy();
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| 102 | }
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| 103 |
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| 104 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
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| 105 |
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| 106 | inline G4double G4eeToPGammaModel::PeakEnergy() const
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| 107 | {
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| 108 | return massR;
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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 | inline G4double G4eeToPGammaModel::ComputeCrossSection(G4double e) const
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| 114 | {
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| 115 | G4double ee = std::min(HighEnergy(),e);
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| 116 | G4double xs;
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| 117 | if(particle == pi0) xs = cross->CrossSectionPi0G(ee);
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| 118 | else xs = cross->CrossSectionEtaG(ee);
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| 119 | return xs;
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| 120 | }
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| 121 |
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| 122 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
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| 123 |
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| 124 | #endif
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