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G4AntiProtonAnnihilationAtRest.hh
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25 //
26 // G4AntiProtonAnnihilationAtRest physics process
27 // Larry Felawka (TRIUMF), April 1998
28 //---------------------------------------------------------------------
29 
30 #ifndef G4AntiProtonAnnihilationAtRest_h
31 #define G4AntiProtonAnnihilationAtRest_h 1
32 
33 // Class Description:
34 //
35 // Process for annihilation of p-bar at rest.
36 // To be used in your physics list in case you need this physics.
37 
38 #include "globals.hh"
39 #include "Randomize.hh"
40 #include "G4VRestProcess.hh"
41 #include "G4VParticleChange.hh"
42 #include "G4ParticleDefinition.hh"
43 #include "G4GHEKinematicsVector.hh"
44 #include "G4HadronicProcessType.hh"
45 
47 
48 {
49  private:
50  // hide assignment operator as private
53 
54  public:
55 
56  G4AntiProtonAnnihilationAtRest(const G4String& processName ="AntiProtonAnnihilationAtRest",
57  G4ProcessType aType = fHadronic );
58 
60 
62 
64 
66 
69 
70  // zero mean lifetime
72  G4ForceCondition* ) {return 0.0;}
73 
74  G4VParticleChange* AtRestDoIt(const G4Track&, const G4Step&);
75 
76  // return number of secondaries produced
78 
79  // pointer to array containg kinematics of secondaries
81 
82  private:
83 
84  void GenerateSecondaries();
85  void Poisso( G4float, G4int* );
86  void Normal( G4float* );
87  void AntiProtonAnnihilation( G4int* );
88  G4double ExNu( G4float );
89  G4int NFac( G4int );
90 
91  private:
92 
93 // global time-of-flight of stopped AntiProton
94  G4float globalTime;
95 
96 // atomic mass of target nucleus
97  G4float targetAtomicMass;
98 
99 // charge of target nucleus
100  G4float targetCharge;
101 
104  G4GHEKinematicsVector* gkin;
105 
106  G4float evapEnergy1;
107  G4float evapEnergy3;
108 
109  G4int ngkine;
110 
111  G4int ntot;
112  G4GHEKinematicsVector result;
113 
114  G4float massPionMinus;
115  G4float massProton;
116  G4float massPionZero;
117  G4float massAntiProton;
118  G4float massPionPlus;
119  G4float massGamma;
120 
121  G4ParticleDefinition* pdefGamma;
122  G4ParticleDefinition* pdefPionPlus;
123  G4ParticleDefinition* pdefPionZero;
124  G4ParticleDefinition* pdefPionMinus;
125  G4ParticleDefinition* pdefProton;
126  G4ParticleDefinition* pdefAntiProton;
127  G4ParticleDefinition* pdefNeutron;
128  G4ParticleDefinition* pdefDeuteron;
129  G4ParticleDefinition* pdefTriton;
130  G4ParticleDefinition* pdefAlpha;
131 
132 };
133 
134 #endif
135