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G4IonFluctuations.hh
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26 // $Id: G4IonFluctuations.hh 100399 2016-10-20 07:38:12Z gcosmo $
27 //
28 // -------------------------------------------------------------------
29 //
30 // GEANT4 Class header file
31 //
32 //
33 // File name: G4IonFluctuations
34 //
35 // Author: Vladimir Ivanchenko
36 //
37 // Creation date: 02.04.2003
38 //
39 // Modifications:
40 //
41 // 16-10-03 Changed interface to Initialisation (V.Ivanchenko)
42 // 01-06-08 Added initialisation of effective charge prestep (V.Ivanchenko)
43 //
44 // Class Description:
45 //
46 // Implementation of ion energy loss fluctuations
47 
48 // -------------------------------------------------------------------
49 //
50 
51 #ifndef G4IonFluctuations_h
52 #define G4IonFluctuations_h 1
53 
54 
55 #include "G4VEmFluctuationModel.hh"
56 #include "G4ParticleDefinition.hh"
58 
59 class G4Pow;
60 
62 {
63 
64 public:
65 
66  explicit G4IonFluctuations(const G4String& nam = "IonFluc");
67 
68  virtual ~G4IonFluctuations();
69 
70  // Sample fluctuations
72  const G4DynamicParticle*,
73  G4double tmax,
74  G4double length,
75  G4double meanLoss) override;
76 
77  // Compute dispertion
78  virtual G4double Dispersion(const G4Material*,
79  const G4DynamicParticle*,
80  G4double tmax,
81  G4double length) override;
82 
83  // Initialisation prerun
84  virtual void InitialiseMe(const G4ParticleDefinition*) override;
85 
86  // Initialisation prestep
87  virtual void SetParticleAndCharge(const G4ParticleDefinition*,
88  G4double q2) override;
89 
90 private:
91 
92  G4double Factor(const G4Material*, G4double Zeff);
93  G4double RelativisticFactor(const G4Material*, G4double Zeff);
94 
95  // hide assignment operator
96  G4IonFluctuations & operator=(const G4IonFluctuations &right) = delete;
97  G4IonFluctuations(const G4IonFluctuations&) = delete;
98 
99  G4UniversalFluctuation uniFluct;
100  const G4ParticleDefinition* particle;
101 
102  G4Pow* g4calc;
103 
104  G4double particleMass;
105  G4double charge;
106  G4double chargeSquare;
107  G4double effChargeSquare;
108 
109  // data members to speed up the fluctuation calculation
110  G4double parameter;
111  G4double theBohrBeta2;
112  G4double minFraction;
113  G4double xmin;
114  G4double minLoss;
115  // cash
116  G4double kineticEnergy;
117  G4double beta2;
118 };
119 
120 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
121 
122 #endif
123 
Definition: G4Pow.hh:56
G4IonFluctuations(const G4String &nam="IonFluc")
virtual void InitialiseMe(const G4ParticleDefinition *) override
virtual ~G4IonFluctuations()
virtual G4double Dispersion(const G4Material *, const G4DynamicParticle *, G4double tmax, G4double length) override
double G4double
Definition: G4Types.hh:76
virtual void SetParticleAndCharge(const G4ParticleDefinition *, G4double q2) override
virtual G4double SampleFluctuations(const G4MaterialCutsCouple *, const G4DynamicParticle *, G4double tmax, G4double length, G4double meanLoss) override