Geant4 Cross Reference

Cross-Referencing   Geant4
Geant4/processes/biasing/generic/include/G4ILawTruncatedExp.hh

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 25 //
 26 // G4ILawTruncatedExp
 27 //
 28 // Class Description:
 29 //
 30 // A G4VBiasingInteractionLaw representing a truncated exponential
 31 // law : an exponential law acting on [0,L] segment. The law is
 32 // driven by a cross-section.
 33 //
 34 // Author: Marc Verderi, November 2013.
 35 // --------------------------------------------------------------------
 36 #ifndef G4ILawTruncatedExp_hh
 37 #define G4ILawTruncatedExp_hh 1
 38 
 39 #include "G4VBiasingInteractionLaw.hh"
 40 
 41 class G4ILawTruncatedExp : public G4VBiasingInteractionLaw
 42 {
 43   public:
 44 
 45     G4ILawTruncatedExp(const G4String& name = "expForceInteractionLaw");
 46     virtual ~G4ILawTruncatedExp();
 47   
 48     virtual G4double ComputeEffectiveCrossSectionAt(G4double length) const;
 49     virtual G4double ComputeNonInteractionProbabilityAt(G4double length) const;
 50     // -- sample the distribution
 51     virtual G4double SampleInteractionLength();
 52     // -- move by true path length, this position becomes the new initial point
 53     virtual G4double UpdateInteractionLengthForStep(G4double truePathLength);
 54     virtual G4bool IsSingular() const { return fIsSingular; }
 55 
 56     void SetForceCrossSection(G4double xs);
 57 
 58     void SetMaximumDistance(G4double d) { fMaximumDistance = d; }
 59     G4double GetMaximumDistance() const { return fMaximumDistance; }
 60     G4double GetInteractionDistance() const { return fInteractionDistance; }
 61 
 62   private:
 63 
 64     G4double fMaximumDistance = 0.0;
 65     G4double fCrossSection = 0.0;
 66     G4bool fCrossSectionDefined = false;
 67     G4bool fIsSingular = false;
 68     G4double fInteractionDistance = 0.0;
 69 };
 70 
 71 #endif
 72