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1 // 2 // ******************************************************************** 3 // * License and Disclaimer * 4 // * * 5 // * The Geant4 software is copyright of the Copyright Holders of * 6 // * the Geant4 Collaboration. It is provided under the terms and * 7 // * conditions of the Geant4 Software License, included in the file * 8 // * LICENSE and available at http://cern.ch/geant4/license . These * 9 // * include a list of copyright holders. * 10 // * * 11 // * Neither the authors of this software system, nor their employing * 12 // * institutes,nor the agencies providing financial support for this * 13 // * work make any representation or warranty, express or implied, * 14 // * regarding this software system or assume any liability for its * 15 // * use. Please see the license in the file LICENSE and URL above * 16 // * for the full disclaimer and the limitation of liability. * 17 // * * 18 // * This code implementation is the result of the scientific and * 19 // * technical work of the GEANT4 collaboration. * 20 // * By using, copying, modifying or distributing the software (or * 21 // * any work based on the software) you agree to acknowledge its * 22 // * use in resulting scientific publications, and indicate your * 23 // * acceptance of all terms of the Geant4 Software license. * 24 // ******************************************************************** 25 // 26 // Class for description of transition radiation generated 27 // by charged particle crossed interface between material 1 28 // and material 2 (1 -> 2). Transition radiation could be of kind: 29 // - optical back 30 // - optical forward 31 // - X-ray forward (for relativistic case Tkin/mass >= 10^2) 32 // 33 // GEANT 4 class header file --- Copyright CERN 1995 34 // 35 // History: 36 // 18.12.97, V. Grichine (Vladimir.Grichine@cern.ch) 37 // 02.02.00, V.Grichine, new data fEnergy and fVarAngle for double 38 // numerical integration in inherited classes 39 // 03.06.03, V.Ivanchenko fix compilation warnings 40 // 28.07.05, P.Gumplinger add G4ProcessType to constructor 41 42 #ifndef G4TransitionRadiation_h 43 #define G4TransitionRadiation_h 44 45 #include "globals.hh" 46 #include "G4ParticleDefinition.hh" 47 #include "G4Step.hh" 48 #include "G4Track.hh" 49 #include "G4VDiscreteProcess.hh" 50 #include "G4VParticleChange.hh" 51 52 class G4TransitionRadiation : public G4VDiscreteProcess 53 { 54 public: 55 explicit G4TransitionRadiation(const G4String& processName = "TR", 56 G4ProcessType type = fElectromagnetic); 57 58 virtual ~G4TransitionRadiation(); 59 60 G4TransitionRadiation(const G4TransitionRadiation& right) = delete; 61 G4TransitionRadiation& operator=(const G4TransitionRadiation& right) = delete; 62 63 // Methods 64 65 G4bool IsApplicable(const G4ParticleDefinition& aParticleType) override; 66 67 virtual G4double GetMeanFreePath(const G4Track&, G4double, 68 G4ForceCondition* condition) override; 69 70 virtual G4VParticleChange* PostStepDoIt(const G4Track&, 71 const G4Step&) override; 72 73 virtual void ProcessDescription(std::ostream&) const override; 74 virtual void DumpInfo() const override { ProcessDescription(G4cout); }; 75 76 virtual G4double SpectralAngleTRdensity(G4double energy, 77 G4double varAngle) const = 0; 78 79 G4double IntegralOverEnergy(G4double energy1, G4double energy2, 80 G4double varAngle) const; 81 82 G4double IntegralOverAngle(G4double energy, G4double varAngle1, 83 G4double varAngle2) const; 84 85 G4double AngleIntegralDistribution(G4double varAngle1, 86 G4double varAngle2) const; 87 88 G4double EnergyIntegralDistribution(G4double energy1, G4double energy2) const; 89 90 protected: 91 // Local constants 92 // Accuracy of Sympson integration 93 static constexpr G4int fSympsonNumber = 100; 94 static constexpr G4int fGammaNumber = 15; 95 static constexpr G4int fPointNumber = 100; 96 97 G4double fGamma; 98 G4double fEnergy; 99 G4double fVarAngle; 100 101 G4double fMinEnergy; // min TR energy 102 G4double fMaxEnergy; // max TR energy 103 G4double fMaxTheta; // max theta of TR quanta 104 105 G4double fSigma1; // plasma energy Sq of matter1 106 G4double fSigma2; // plasma energy Sq of matter2 107 108 G4int fMatIndex1; // index of the 1st material 109 G4int fMatIndex2; // index of the 2nd material 110 }; 111 112 #endif // G4TransitionRadiation_h 113