Geant4 Cross Reference

Cross-Referencing   Geant4
Geant4/processes/electromagnetic/xrays/include/G4TransitionRadiation.hh

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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