include/Geant4/G4OpMieHG.hh

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0025 //
0026 ////////////////////////////////////////////////////////////////////////
0027 //
0028 // File G4OpMieHG.hh
0029 // Description: Discrete Process -- Mie Scattering of Optical Photons
0030 // Created: 2010-07-03
0031 // Author: Xin Qian
0032 // Based on work from Vlasios Vasileiou
0033 //
0034 // This subroutine will mimic the Mie scattering based on
0035 // Henyey-Greenstein phase function
0036 // Forward and backward angles are treated separately.
0037 //
0038 ////////////////////////////////////////////////////////////////////////
0039
0040 #ifndef G4OpMieHG_h
0041 #define G4OpMieHG_h 1
0042
0043 #include "G4VDiscreteProcess.hh"
0044 #include "G4OpticalPhoton.hh"
0045
0046 class G4OpMieHG : public G4VDiscreteProcess
0047 {
0048  public:
0049   explicit G4OpMieHG(const G4String& processName = "OpMieHG",
0050                      G4ProcessType type          = fOptical);
0051   virtual ~G4OpMieHG();
0052
0053   virtual G4bool IsApplicable(
0054     const G4ParticleDefinition& aParticleType) override;
0055   // Returns true -> 'is applicable' only for an optical photon.
0056
0057   virtual G4double GetMeanFreePath(const G4Track& aTrack, G4double,
0058                                    G4ForceCondition*) override;
0059   // Return the mean free path of Mie scattering
0060
0061   virtual G4VParticleChange* PostStepDoIt(const G4Track& aTrack,
0062                                           const G4Step& aStep) override;
0063   // This is the method implementing Mie scattering.
0064
0065   virtual void PreparePhysicsTable(const G4ParticleDefinition&) override;
0066   virtual void Initialise();
0067
0068   void SetVerboseLevel(G4int);
0069
0070  private:
0071   G4OpMieHG(const G4OpMieHG& right) = delete;
0072   G4OpMieHG& operator=(const G4OpMieHG& right) = delete;
0073
0074   size_t idx_mie = 0;
0075 };
0076
0077 inline G4bool G4OpMieHG::IsApplicable(const G4ParticleDefinition& aParticleType)
0078 {
0079   return (&aParticleType == G4OpticalPhoton::OpticalPhoton());
0080 }
0081
0082 #endif /* G4OpMieHG_h */