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1 //
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25 //
26 // G4VRestDiscreteProcess
27 //
28 // Class description:
29 //
30 // Abstract class which defines the public behavior of
31 // rest + discrete physics interactions.
32
33 // Authors:
34 // - 2 December 1995, G.Cosmo - First implementation, based on object model
35 // - 8 January 1997, H.Kurashige - New Physics scheme
36 // --------------------------------------------------------------------
37 #ifndef G4VRestDiscreteProcess_hh
38 #define G4VRestDiscreteProcess_hh 1
39
40 #include "globals.hh"
41 #include "G4ios.hh"
42
43 #include "G4VProcess.hh"
44
45 class G4VRestDiscreteProcess : public G4VProcess
46 {
47 public:
48
49 G4VRestDiscreteProcess(const G4String& ,
50 G4ProcessType aType = fNotDefined);
51 G4VRestDiscreteProcess(G4VRestDiscreteProcess&);
52
53 virtual ~G4VRestDiscreteProcess();
54
55 G4VRestDiscreteProcess& operator=(const G4VRestDiscreteProcess&) = delete;
56
57 virtual G4double PostStepGetPhysicalInteractionLength(
58 const G4Track& track,
59 G4double previousStepSize,
60 G4ForceCondition* condition
61 );
62
63 virtual G4VParticleChange* PostStepDoIt(
64 const G4Track& ,
65 const G4Step&
66 );
67
68 virtual G4double AtRestGetPhysicalInteractionLength(
69 const G4Track& ,
70 G4ForceCondition*
71 );
72
73 virtual G4VParticleChange* AtRestDoIt(
74 const G4Track& ,
75 const G4Step&
76 );
77
78 virtual G4double AlongStepGetPhysicalInteractionLength(
79 const G4Track&,
80 G4double ,
81 G4double ,
82 G4double& ,
83 G4GPILSelection*
84 ) { return -1.0; }
85 // No operation in AlongStepDoIt
86
87 virtual G4VParticleChange* AlongStepDoIt(
88 const G4Track& ,
89 const G4Step&
90 ) { return 0; }
91 // No operation in AlongStepDoIt
92
93 protected:
94
95 virtual G4double GetMeanFreePath(const G4Track& aTrack,
96 G4double previousStepSize,
97 G4ForceCondition* condition) = 0;
98 // Calculates from the macroscopic cross-section a mean
99 // free path, the value is returned in units of distance
100
101 virtual G4double GetMeanLifeTime(const G4Track& aTrack,
102 G4ForceCondition* condition) = 0;
103 // Calculates the mean life-time (i.e. for decays) of the
104 // particle at rest due to the occurrence of the given process,
105 // or converts the probability of interaction (i.e. for
106 // annihilation) into the life-time of the particle for the
107 // occurrence of the given process
108
109 private:
110
111 G4VRestDiscreteProcess();
112 // Hidden default constructor
113 };
114
115 #endif
116