Geant4_10
G4ILawForceFreeFlight.hh
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27 // $Id: $
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29 // ---------------------------------------------------------------
30 //
31 // G4ILawForceFreeFlight
32 //
33 // Class Description:
34 // A G4VBiasingInteractionLaw representing the "interaction" law
35 // for a force free flight, ie, a particle which does not interact.
36 // It is a limit case for which the non-interaction probability over
37 // a segment is always 1, and the effective cross-section always
38 // zero.
39 // This singular behavior is signaled by the IsSingular()
40 // method returning always true.
41 //
42 // ---------------------------------------------------------------
43 // Initial version Nov. 2013 M. Verderi
44 #ifndef G4ILawForceFreeFlight_hh
45 #define G4ILawForceFreeFlight_hh 1
46 
48 
50 {
51 public:
52  G4ILawForceFreeFlight(G4String name = "forceFreeFlightLaw");
53  virtual ~G4ILawForceFreeFlight();
54 
55 public:
56  virtual G4double ComputeEffectiveCrossSectionAt(G4double length) const;
58  // -- sample the distribution
60  // -- move by true path length, this position becomes the new initial point
61  virtual G4double UpdateInteractionLengthForStep(G4double truePathLength);
62  virtual G4bool IsSingular() const {return true;}
63 };
64 
65 #endif
virtual G4double ComputeNonInteractionProbabilityAt(G4double length) const
const XML_Char * name
Definition: expat.h:151
virtual G4double SampleInteractionLength()
virtual G4bool IsSingular() const
virtual G4double UpdateInteractionLengthForStep(G4double truePathLength)
bool G4bool
Definition: G4Types.hh:79
double G4double
Definition: G4Types.hh:76
G4ILawForceFreeFlight(G4String name="forceFreeFlightLaw")
virtual G4double ComputeEffectiveCrossSectionAt(G4double length) const