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>> 26 // $Id: G4ElectronIonPair.hh,v 1.5 2010-10-25 17:23:01 vnivanch Exp $
>> 27 // GEANT4 tag $Name: geant4-09-04-patch-02 $
>> 28 //
>> 29 //
26 #ifndef G4ElectronIonPair_h 30 #ifndef G4ElectronIonPair_h
27 #define G4ElectronIonPair_h 1 31 #define G4ElectronIonPair_h 1
28 32
29 // ------------------------------------------- 33 // -------------------------------------------------------------
30 // 34 //
31 // GEANT4 Class header file 35 // GEANT4 Class header file
32 // 36 //
33 // 37 //
34 // File name: G4ElectronIonPair 38 // File name: G4ElectronIonPair
35 // 39 //
36 // Author: Vladimir Ivanchenko 40 // Author: Vladimir Ivanchenko
37 // 41 //
38 // Creation date: 08.07.2008 42 // Creation date: 08.07.2008
39 // 43 //
40 // Modifications: 44 // Modifications:
41 // 45 //
42 // 46 //
43 // Class Description: 47 // Class Description:
44 // Compution on number of electon-ion or ele 48 // Compution on number of electon-ion or electorn-hole pairs
45 // at the step of a particle and sampling io 49 // at the step of a particle and sampling ionisation points
46 // in space 50 // in space
47 // 51 //
48 // Based on ICRU Report 31, 1979 52 // Based on ICRU Report 31, 1979
49 // "Average Energy Required to Produce an Ion << 53 // "Average Energy Required to Produce an Ion Pair"
50 // <<
51 // 06.04.2010 V. Grichine, substitute Gauss by <<
52 // distribution at fix <<
53 // 54 //
54 // ------------------------------------------- 55 // -------------------------------------------------------------
55 56
56 //....oooOO0OOooo........oooOO0OOooo........oo 57 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
57 //....oooOO0OOooo........oooOO0OOooo........oo 58 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
58 59
59 #include "globals.hh" 60 #include "globals.hh"
60 #include "G4Step.hh" 61 #include "G4Step.hh"
61 #include "G4ParticleDefinition.hh" 62 #include "G4ParticleDefinition.hh"
62 #include "G4ThreeVector.hh" 63 #include "G4ThreeVector.hh"
63 #include "G4VProcess.hh" 64 #include "G4VProcess.hh"
64 #include "Randomize.hh" <<
65 #include <vector> 65 #include <vector>
66 66
67 //....oooOO0OOooo........oooOO0OOooo........oo 67 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
68 68
69 class G4Material; 69 class G4Material;
70 70
71 class G4ElectronIonPair 71 class G4ElectronIonPair
72 { 72 {
73 public: 73 public:
74 74
75 explicit G4ElectronIonPair(G4int verb); << 75 G4ElectronIonPair();
76 76
77 virtual ~G4ElectronIonPair(); 77 virtual ~G4ElectronIonPair();
78 78
79 // compute mean number of ionisation points 79 // compute mean number of ionisation points at a step
80 G4double MeanNumberOfIonsAlongStep(const G4P 80 G4double MeanNumberOfIonsAlongStep(const G4ParticleDefinition*,
81 const G4Material*, 81 const G4Material*,
82 G4double edepTotal, 82 G4double edepTotal,
83 G4double edepNIEL = 0.0); 83 G4double edepNIEL = 0.0);
84 84
85 inline G4double MeanNumberOfIonsAlongStep(co 85 inline G4double MeanNumberOfIonsAlongStep(const G4Step*);
86 86
87 inline G4int SampleNumberOfIonsAlongStep(con 87 inline G4int SampleNumberOfIonsAlongStep(const G4Step*);
88 88
89 // returns pointer to the new vector of posi 89 // returns pointer to the new vector of positions of
90 // ionisation points in the World coordinate 90 // ionisation points in the World coordinate system
91 std::vector<G4ThreeVector>* SampleIonsAlongS 91 std::vector<G4ThreeVector>* SampleIonsAlongStep(const G4Step*);
92 92
93 // compute number of holes in the atom after 93 // compute number of holes in the atom after PostStep interaction
94 G4int ResidualeChargePostStep(const G4Partic 94 G4int ResidualeChargePostStep(const G4ParticleDefinition*,
95 const G4TrackVector* secondary = nullp << 95 const G4TrackVector* secondary = 0,
96 G4int processSubType = -1) const; << 96 G4int processSubType = -1);
97 97
98 inline G4int ResidualeChargePostStep(const G << 98 inline G4int ResidualeChargePostStep(const G4Step*);
99 99
100 // find mean energies per ionisation 100 // find mean energies per ionisation
101 G4double FindG4MeanEnergyPerIonPair(const G4 << 101 G4double FindG4MeanEnergyPerIonPair(const G4Material*);
102 102
103 // dump mean energies per ionisation used in 103 // dump mean energies per ionisation used in run time
104 void DumpMeanEnergyPerIonPair() const; << 104 void DumpMeanEnergyPerIonPair();
105 105
106 // dump G4 list 106 // dump G4 list
107 void DumpG4MeanEnergyPerIonPair() const; << 107 void DumpG4MeanEnergyPerIonPair();
108 108
109 inline void SetVerbose(G4int); 109 inline void SetVerbose(G4int);
110 110
111 // hide assignment operator <<
112 G4ElectronIonPair & operator=(const G4Electr <<
113 G4ElectronIonPair(const G4ElectronIonPair&) <<
114 <<
115 private: 111 private:
116 112
117 void Initialise(); 113 void Initialise();
118 114
119 G4double FindMeanEnergyPerIonPair(const G4Ma << 115 G4double FindMeanEnergyPerIonPair(const G4Material*);
>> 116
>> 117 // hide assignment operator
>> 118 G4ElectronIonPair & operator=(const G4ElectronIonPair &right);
>> 119 G4ElectronIonPair(const G4ElectronIonPair&);
120 120
121 // cache << 121 // cash
122 const G4Material* curMaterial; 122 const G4Material* curMaterial;
123 G4double curMeanEnergy; 123 G4double curMeanEnergy;
124 124
125 G4double invFanoFactor; << 125 G4double FanoFactor;
126 126
127 G4int verbose; 127 G4int verbose;
128 G4int nMaterials; 128 G4int nMaterials;
129 129
130 // list of G4 NIST materials with mean energ 130 // list of G4 NIST materials with mean energy per ion defined
131 std::vector<G4double> g4MatData; 131 std::vector<G4double> g4MatData;
132 std::vector<G4String> g4MatNames; 132 std::vector<G4String> g4MatNames;
133 }; 133 };
134 134
135 inline G4double 135 inline G4double
136 G4ElectronIonPair::MeanNumberOfIonsAlongStep(c << 136 G4ElectronIonPair::MeanNumberOfIonsAlongStep(const G4Step* step)
137 { 137 {
138 return MeanNumberOfIonsAlongStep(step->GetTr 138 return MeanNumberOfIonsAlongStep(step->GetTrack()->GetParticleDefinition(),
139 step->GetPreStepPoint()->GetMateria 139 step->GetPreStepPoint()->GetMaterial(),
140 step->GetTotalEnergyDeposit(), 140 step->GetTotalEnergyDeposit(),
141 step->GetNonIonizingEnergyDeposit() 141 step->GetNonIonizingEnergyDeposit());
142 } 142 }
143 143
144 inline G4int << 144 inline
145 G4ElectronIonPair::SampleNumberOfIonsAlongStep << 145 G4int G4ElectronIonPair::SampleNumberOfIonsAlongStep(const G4Step* step)
146 { 146 {
147 // use gamma distribution with mean value n= <<
148 // dispersion D=meanion/invFanoFactor <<
149 G4double meanion = MeanNumberOfIonsAlongStep 147 G4double meanion = MeanNumberOfIonsAlongStep(step);
150 return G4lrint(G4RandGamma::shoot(meanion*in << 148 G4double sig = FanoFactor*std::sqrt(meanion);
>> 149 G4int nion = G4int(G4RandGauss::shoot(meanion,sig) + 0.5);
>> 150 return nion;
151 } 151 }
152 152
153 inline G4int << 153 inline
154 G4ElectronIonPair::ResidualeChargePostStep(con << 154 G4int G4ElectronIonPair::ResidualeChargePostStep(const G4Step* step)
155 { 155 {
156 G4int subtype = -1; 156 G4int subtype = -1;
157 const G4VProcess* proc = step->GetPostStepPo 157 const G4VProcess* proc = step->GetPostStepPoint()->GetProcessDefinedStep();
158 if(proc) { subtype = proc->GetProcessSubType 158 if(proc) { subtype = proc->GetProcessSubType(); }
159 return ResidualeChargePostStep(step->GetTrac 159 return ResidualeChargePostStep(step->GetTrack()->GetParticleDefinition(),
160 step->GetSecondary(), 160 step->GetSecondary(),
161 subtype); 161 subtype);
162 } 162 }
163 163
164 inline void G4ElectronIonPair::SetVerbose(G4in 164 inline void G4ElectronIonPair::SetVerbose(G4int val)
165 { 165 {
166 verbose = val; 166 verbose = val;
167 } 167 }
168 168
169 #endif 169 #endif
170 170
171 171