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25 // 25 //
>> 26 //
>> 27 //
>> 28 // ---------------------------------------------------------------
>> 29 //
26 // G4InteractionLawPhysical 30 // G4InteractionLawPhysical
27 // 31 //
28 // Class Description: 32 // Class Description:
29 // << 33 // A G4VBiasingInteractionLaw representing the usual
30 // A G4VBiasingInteractionLaw representing the <<
31 // physical exponential law, of constant cross 34 // physical exponential law, of constant cross-section of the step.
32 // 35 //
33 // Author: Marc Verderi, November 2013. << 36 // ---------------------------------------------------------------
34 // ------------------------------------------- << 37 // Initial version Nov. 2013 M. Verderi
>> 38
35 #ifndef G4InteractionLawPhysical_hh 39 #ifndef G4InteractionLawPhysical_hh
36 #define G4InteractionLawPhysical_hh 1 40 #define G4InteractionLawPhysical_hh 1
37 41
38 #include "G4VBiasingInteractionLaw.hh" 42 #include "G4VBiasingInteractionLaw.hh"
39 43
40 class G4InteractionLawPhysical : public G4VBia 44 class G4InteractionLawPhysical : public G4VBiasingInteractionLaw
41 { 45 {
42 public: << 46 public:
>> 47 G4InteractionLawPhysical(G4String name = "exponentialLaw");
>> 48 virtual ~G4InteractionLawPhysical();
>> 49
>> 50 public:
>> 51 void SetPhysicalCrossSection(G4double crossSection);
>> 52 G4double GetPhysicalCrossSection() const {return fCrossSection;}
>> 53
>> 54 public:
>> 55 virtual G4double ComputeEffectiveCrossSectionAt(G4double length) const;
>> 56 virtual G4double ComputeNonInteractionProbabilityAt(G4double length) const;
>> 57 // -- sample the distribution
>> 58 virtual G4double SampleInteractionLength();
>> 59 // -- move by true path length, this position becomes the new initial point
>> 60 virtual G4double UpdateInteractionLengthForStep(G4double truePathLength);
43 61
44 G4InteractionLawPhysical(const G4String& n <<
45 virtual ~G4InteractionLawPhysical(); <<
46 62
47 void SetPhysicalCrossSection(G4double cros << 63 private:
48 G4double GetPhysicalCrossSection() const { << 64 G4double fCrossSection;
49 << 65 G4bool fCrossSectionDefined;
50 virtual G4double ComputeEffectiveCrossSect << 66 G4double fNumberOfInteractionLength;
51 virtual G4double ComputeNonInteractionProb << 67
52 // -- sample the distribution <<
53 virtual G4double SampleInteractionLength( <<
54 // -- move by true path length, this posit <<
55 virtual G4double UpdateInteractionLengthFo <<
56 <<
57 private: <<
58 <<
59 G4double fCrossSection = 0.0; <<
60 G4bool fCrossSectionDefined = false; <<
61 G4double fNumberOfInteractionLength = -1.0 <<
62 }; 68 };
63 69
64 #endif 70 #endif
65 71