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25 // 25 //
>> 26 //
>> 27 // $Id: $
>> 28 //
>> 29 // ---------------------------------------------------------------
>> 30 //
26 // G4InteractionLawPhysical 31 // G4InteractionLawPhysical
27 // 32 //
28 // Class Description: 33 // Class Description:
29 // << 34 // A G4VBiasingInteractionLaw representing the usual
30 // A G4VBiasingInteractionLaw representing the <<
31 // physical exponential law, of constant cross 35 // physical exponential law, of constant cross-section of the step.
32 // 36 //
33 // Author: Marc Verderi, November 2013. << 37 // ---------------------------------------------------------------
34 // ------------------------------------------- << 38 // Initial version Nov. 2013 M. Verderi
>> 39
35 #ifndef G4InteractionLawPhysical_hh 40 #ifndef G4InteractionLawPhysical_hh
36 #define G4InteractionLawPhysical_hh 1 41 #define G4InteractionLawPhysical_hh 1
37 42
38 #include "G4VBiasingInteractionLaw.hh" 43 #include "G4VBiasingInteractionLaw.hh"
39 44
40 class G4InteractionLawPhysical : public G4VBia 45 class G4InteractionLawPhysical : public G4VBiasingInteractionLaw
41 { 46 {
42 public: << 47 public:
>> 48 G4InteractionLawPhysical(G4String name = "exponentialLaw");
>> 49 virtual ~G4InteractionLawPhysical();
>> 50
>> 51 public:
>> 52 void SetPhysicalCrossSection(G4double crossSection);
>> 53 G4double GetPhysicalCrossSection() const {return fCrossSection;}
>> 54
>> 55 public:
>> 56 virtual G4double ComputeEffectiveCrossSectionAt(G4double length) const;
>> 57 virtual G4double ComputeNonInteractionProbabilityAt(G4double length) const;
>> 58 // -- sample the distribution
>> 59 virtual G4double SampleInteractionLength();
>> 60 // -- move by true path length, this position becomes the new initial point
>> 61 virtual G4double UpdateInteractionLengthForStep(G4double truePathLength);
43 62
44 G4InteractionLawPhysical(const G4String& n <<
45 virtual ~G4InteractionLawPhysical(); <<
46 63
47 void SetPhysicalCrossSection(G4double cros << 64 private:
48 G4double GetPhysicalCrossSection() const { << 65 G4double fCrossSection;
49 << 66 G4bool fCrossSectionDefined;
50 virtual G4double ComputeEffectiveCrossSect << 67 G4double fNumberOfInteractionLength;
51 virtual G4double ComputeNonInteractionProb << 68
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 }; 69 };
63 70
64 #endif 71 #endif
65 72