Geant4 Cross Reference

Cross-Referencing   Geant4
Geant4/processes/biasing/generic/include/G4InteractionLawPhysical.hh

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 25 //
 26 // G4InteractionLawPhysical
 27 //
 28 // Class Description:
 29 //
 30 // A G4VBiasingInteractionLaw representing the usual
 31 // physical exponential law, of constant cross-section of the step.
 32 //
 33 // Author: Marc Verderi, November 2013.
 34 // --------------------------------------------------------------------
 35 #ifndef G4InteractionLawPhysical_hh
 36 #define G4InteractionLawPhysical_hh 1
 37 
 38 #include "G4VBiasingInteractionLaw.hh"
 39 
 40 class G4InteractionLawPhysical : public G4VBiasingInteractionLaw
 41 {
 42   public:
 43 
 44     G4InteractionLawPhysical(const G4String& name = "exponentialLaw");
 45     virtual ~G4InteractionLawPhysical();
 46 
 47     void SetPhysicalCrossSection(G4double crossSection);
 48     G4double GetPhysicalCrossSection() const { return fCrossSection; }
 49   
 50     virtual G4double ComputeEffectiveCrossSectionAt(G4double length) const;
 51     virtual G4double ComputeNonInteractionProbabilityAt(G4double length) const;
 52     // -- sample the distribution
 53     virtual  G4double SampleInteractionLength();
 54     // -- move by true path length, this position becomes the new initial point
 55     virtual G4double UpdateInteractionLengthForStep(G4double truePathLength);
 56 
 57   private:
 58 
 59     G4double fCrossSection = 0.0;
 60     G4bool fCrossSectionDefined = false;
 61     G4double fNumberOfInteractionLength = -1.0;
 62 };
 63 
 64 #endif
 65