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G4eIonisationSpectrum.hh
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26 // $Id: G4eIonisationSpectrum.hh 66241 2012-12-13 18:34:42Z gunter $
27 //
28 // -------------------------------------------------------------------
29 //
30 // GEANT4 Class file
31 //
32 //
33 // File name: G4eIonisationSpectrum
34 //
35 // Author: V.Ivanchenko (Vladimir.Ivantchenko@cern.ch)
36 //
37 // Creation date: 27 September 2001
38 //
39 // Modifications:
40 // 10.10.01 MGP Revision to improve code quality and
41 // consistency with design
42 // 29.11.01 V.Ivanchenko Parametrisation is updated
43 // 30.05.02 VI Add inline functions
44 //
45 // -------------------------------------------------------------------
46 
47 // Class Description:
48 // Provides various integration over delta-electron spectrum for e-
49 // ionisation process. Spectrum is parametrised accourding to
50 // EEDL database, details are described in the Physics Reference Manual
51 // Further documentation available from http://www.ge.infn.it/geant4/lowE
52 
53 // -------------------------------------------------------------------
54 
55 #ifndef G4EIONISATIONSPECTRUM_HH
56 #define G4EIONISATIONSPECTRUM_HH 1
57 
58 #include "G4VEnergySpectrum.hh"
60 
61 //class G4eIonisationParameters;
62 class G4DataVector;
63 
65 {
66 
67 public:
68 
70 
72 
74  G4double kineticEnergy, G4int shell,
75  const G4ParticleDefinition* pd=0) const;
76 
78  G4double kineticEnergy, G4int shell,
79  const G4ParticleDefinition* pd=0) const;
80 
82  G4double kineticEnergy, G4int shell,
83  const G4ParticleDefinition* pd=0) const;
84 
86  G4int Z = 0,
87  const G4ParticleDefinition* pd=0) const;
88 
89  G4double Excitation(G4int Z, G4double e) const;
90 
91  void PrintData() const;
92 
93 protected:
94 
95 private:
96 
97  G4double IntSpectrum(G4double xMin, G4double xMax,
98  const G4DataVector& p) const;
99 
100  G4double AverageValue(G4double xMin, G4double xMax,
101  const G4DataVector& p) const;
102 
103  G4double Function(G4double x, const G4DataVector& p) const;
104 
105  // Hide copy constructor and assignment operator
107  G4eIonisationSpectrum & operator = (const G4eIonisationSpectrum &right);
108 
109 private:
110 
111  G4eIonisationParameters* theParam;
112  G4double lowestE;
113  G4double factor;
114  G4int iMax;
115  G4int verbose;
116 };
117 
118 
119 inline G4double G4eIonisationSpectrum::Function(G4double x,
120  const G4DataVector& p) const
121 {
122  G4double f = 1.0 - p[0] - p[iMax]*x
123  + x*x*(1.0 - p[iMax] + (1.0/(1.0 - x) - p[iMax])/(1.0 - x))
124  + 0.5*p[0]/x;
125 
126  return f;
127 }
128 
130 {
131  return theParam->Excitation(Z, e);
132 }
133 
134 
135 #endif
G4double SampleEnergy(G4int Z, G4double tMin, G4double tMax, G4double kineticEnergy, G4int shell, const G4ParticleDefinition *pd=0) const
G4double Excitation(G4int Z, G4double e) const
const char * p
Definition: xmltok.h:285
int G4int
Definition: G4Types.hh:78
G4double Excitation(G4int Z, G4double e) const
G4double Probability(G4int Z, G4double tMin, G4double tMax, G4double kineticEnergy, G4int shell, const G4ParticleDefinition *pd=0) const
G4double MaxEnergyOfSecondaries(G4double kineticEnergy, G4int Z=0, const G4ParticleDefinition *pd=0) const
G4double AverageEnergy(G4int Z, G4double tMin, G4double tMax, G4double kineticEnergy, G4int shell, const G4ParticleDefinition *pd=0) const
double G4double
Definition: G4Types.hh:76