Geant4_10
G4ionEffectiveCharge.hh
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26 // $Id: G4ionEffectiveCharge.hh 74376 2013-10-04 08:25:47Z gcosmo $
27 //
28 // -------------------------------------------------------------------
29 //
30 // GEANT4 Class header file
31 //
32 //
33 // File name: G4ionEffectiveCharge
34 //
35 // Author: Vladimir Ivanchenko
36 //
37 // Creation date: 03.07.2004
38 //
39 // Modifications:
40 //
41 //
42 // Class Description:
43 //
44 // This class manages the simulation of effective charge of ions
45 // in the assumption of equilibrium between ion shelss and media.
46 // J.F.Ziegler and J.M.Manoyan, The stopping of ions in compaunds,
47 // Nucl. Inst. & Meth. in Phys. Res. B35 (1988) 215-228.
48 //
49 
50 // -------------------------------------------------------------------
51 //
52 
53 #ifndef G4ionEffectiveCharge_h
54 #define G4ionEffectiveCharge_h 1
55 
56 #include "globals.hh"
57 #include "G4ParticleDefinition.hh"
58 
59 class G4Material;
60 class G4Pow;
61 
63 {
64 
65 public:
66 
68 
69  virtual ~G4ionEffectiveCharge();
70 
72  const G4ParticleDefinition* p,
73  const G4Material* material,
74  G4double kineticEnergy);
75 
77  const G4Material* material,
78  G4double kineticEnergy);
79 
80 private:
81 
82  // hide assignment operator
85 
86  G4Pow* g4pow;
87 
88  const G4ParticleDefinition* lastPart;
89  const G4Material* lastMat;
90  G4double lastKinEnergy;
91 
92  G4double chargeCorrection;
93  G4double effCharge;
94 
95  G4double energyHighLimit;
96  G4double energyLowLimit;
97  G4double energyBohr;
98  G4double massFactor;
99  G4double minCharge;
100 };
101 
102 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
103 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
104 
106  const G4ParticleDefinition* p,
107  const G4Material* material,
108  G4double kineticEnergy)
109 {
110  G4double charge = effCharge;
111  if( kineticEnergy != lastKinEnergy || material != lastMat || p != lastPart) {
112  charge = EffectiveCharge(p,material,kineticEnergy);
113  }
114  charge *= chargeCorrection/CLHEP::eplus;
115 
116  return charge*charge;
117 }
118 
119 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
120 
121 #endif
Definition: G4Pow.hh:56
const char * p
Definition: xmltok.h:285
G4double EffectiveChargeSquareRatio(const G4ParticleDefinition *p, const G4Material *material, G4double kineticEnergy)
string material
Definition: eplot.py:19
G4double EffectiveCharge(const G4ParticleDefinition *p, const G4Material *material, G4double kineticEnergy)
double G4double
Definition: G4Types.hh:76