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27 // ------------------------------------------- 27 // -------------------------------------------------------------------
28 // 28 //
29 // GEANT4 Class header file 29 // GEANT4 Class header file
30 // 30 //
31 // 31 //
32 // File name: G4ionEffectiveCharge 32 // File name: G4ionEffectiveCharge
33 // 33 //
34 // Author: Vladimir Ivanchenko 34 // Author: Vladimir Ivanchenko
35 // 35 //
36 // Creation date: 03.07.2004 36 // Creation date: 03.07.2004
37 // 37 //
38 // Modifications: 38 // Modifications:
39 // 39 //
40 // 40 //
41 // Class Description: 41 // Class Description:
42 // 42 //
43 // This class manages the simulation of effect 43 // This class manages the simulation of effective charge of ions
44 // in the assumption of equilibrium between io 44 // in the assumption of equilibrium between ion shelss and media.
45 // J.F.Ziegler and J.M.Manoyan, The stopping o 45 // J.F.Ziegler and J.M.Manoyan, The stopping of ions in compaunds,
46 // Nucl. Inst. & Meth. in Phys. Res. B35 (1988 46 // Nucl. Inst. & Meth. in Phys. Res. B35 (1988) 215-228.
47 // 47 //
48 48
49 // ------------------------------------------- 49 // -------------------------------------------------------------------
50 // 50 //
51 51
52 #ifndef G4ionEffectiveCharge_h 52 #ifndef G4ionEffectiveCharge_h
53 #define G4ionEffectiveCharge_h 1 53 #define G4ionEffectiveCharge_h 1
54 54
55 #include "globals.hh" 55 #include "globals.hh"
56 #include "G4ParticleDefinition.hh" 56 #include "G4ParticleDefinition.hh"
57 57
58 class G4Material; 58 class G4Material;
59 class G4Pow; 59 class G4Pow;
60 60
61 class G4ionEffectiveCharge 61 class G4ionEffectiveCharge
62 { 62 {
63 63
64 public: 64 public:
65 65
66 explicit G4ionEffectiveCharge(); 66 explicit G4ionEffectiveCharge();
67 67
68 ~G4ionEffectiveCharge() = default; << 68 virtual ~G4ionEffectiveCharge();
69 69
70 G4double EffectiveChargeSquareRatio( 70 G4double EffectiveChargeSquareRatio(
71 const G4ParticleDef 71 const G4ParticleDefinition* p,
72 const G4Material* m 72 const G4Material* material,
73 G4double kineticEnergy); 73 G4double kineticEnergy);
74 74
75 G4double EffectiveCharge(const G4ParticleDef 75 G4double EffectiveCharge(const G4ParticleDefinition* p,
76 const G4Material* m 76 const G4Material* material,
77 G4double kineticEnergy); 77 G4double kineticEnergy);
78 78
>> 79 private:
>> 80
79 // hide assignment operator 81 // hide assignment operator
80 G4ionEffectiveCharge & operator=(const G4ion 82 G4ionEffectiveCharge & operator=(const G4ionEffectiveCharge &right) = delete;
81 G4ionEffectiveCharge(const G4ionEffectiveCha 83 G4ionEffectiveCharge(const G4ionEffectiveCharge&) = delete;
82 84
83 private: << 85 G4double inveplus;
84 <<
85 G4Pow* g4calc; 86 G4Pow* g4calc;
86 87
87 const G4ParticleDefinition* lastPart = nullp << 88 const G4ParticleDefinition* lastPart;
88 const G4Material* lastMat = nullpt << 89 const G4Material* lastMat;
89 <<
90 G4double inveplus; <<
91 G4double lastKinEnergy; 90 G4double lastKinEnergy;
92 91
93 G4double chargeCorrection 92 G4double chargeCorrection;
94 G4double effCharge; 93 G4double effCharge;
95 94
96 G4double energyHighLimit; 95 G4double energyHighLimit;
97 G4double energyLowLimit; 96 G4double energyLowLimit;
98 G4double energyBohr; 97 G4double energyBohr;
99 G4double massFactor; 98 G4double massFactor;
100 G4double minCharge; 99 G4double minCharge;
101 }; 100 };
102 101
103 //....oooOO0OOooo........oooOO0OOooo........oo 102 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
104 //....oooOO0OOooo........oooOO0OOooo........oo 103 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
105 104
106 inline G4double G4ionEffectiveCharge::Effectiv 105 inline G4double G4ionEffectiveCharge::EffectiveChargeSquareRatio(
107 const G4ParticleDef 106 const G4ParticleDefinition* p,
108 const G4Material* m 107 const G4Material* material,
109 G4double kineticEnergy) 108 G4double kineticEnergy)
110 { 109 {
111 const G4double aCharge = << 110 G4double charge = effCharge;
112 EffectiveCharge(p,material,kineticEnergy)* << 111 if( kineticEnergy != lastKinEnergy || material != lastMat || p != lastPart) {
113 return aCharge*aCharge; << 112 charge = EffectiveCharge(p,material,kineticEnergy);
>> 113 }
>> 114 charge *= chargeCorrection*inveplus;
>> 115
>> 116 return charge*charge;
114 } 117 }
115 118
116 //....oooOO0OOooo........oooOO0OOooo........oo 119 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
117 120
118 #endif 121 #endif
119 122