| Geant4 Cross Reference |
1 //
2 // ********************************************************************
3 // * License and Disclaimer *
4 // * *
5 // * The Geant4 software is copyright of the Copyright Holders of *
6 // * the Geant4 Collaboration. It is provided under the terms and *
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9 // * include a list of copyright holders. *
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12 // * institutes,nor the agencies providing financial support for this *
13 // * work make any representation or warranty, express or implied, *
14 // * regarding this software system or assume any liability for its *
15 // * use. Please see the license in the file LICENSE and URL above *
16 // * for the full disclaimer and the limitation of liability. *
17 // * *
18 // * This code implementation is the result of the scientific and *
19 // * technical work of the GEANT4 collaboration. *
20 // * By using, copying, modifying or distributing the software (or *
21 // * any work based on the software) you agree to acknowledge its *
22 // * use in resulting scientific publications, and indicate your *
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24 // ********************************************************************
25 //
26 //
27 //
28 // Author: A. Forti
29 // Maria Grazia Pia (Maria.Grazia.Pia@cern.ch)
30 //
31 // History:
32 // -----------
33 // 02 Mar 1999 A. Forti 1st implementation
34 // 14 Aug 2001 MGP Major revision according to a design iteration
35 //
36 // -------------------------------------------------------------------
37
38 // Class description:
39 // Low Energy process, Photon conversion
40 // Further documentation available from http://www.ge.infn.it/geant4/lowE
41
42 // -------------------------------------------------------------------
43
44 #ifndef G4RDLOWENERGYGAMMACONVERSION_HH
45 #define G4RDLOWENERGYGAMMACONVERSION_HH 1
46
47
48 #include "G4VDiscreteProcess.hh"
49
50 #include "globals.hh"
51 #include "G4VDiscreteProcess.hh"
52 class G4Track;
53 class G4Step;
54 class G4ParticleDefinition;
55 class G4VParticleChange;
56 class G4RDVEMDataSet;
57 class G4RDVCrossSectionHandler;
58 class G4RDVRangeTest;
59
60 class G4LowEnergyGammaConversion : public G4VDiscreteProcess {
61
62 public:
63
64 G4LowEnergyGammaConversion(const G4String& processName ="LowEnConversion");
65
66 ~G4LowEnergyGammaConversion();
67
68 G4bool IsApplicable(const G4ParticleDefinition& photon);
69
70 void BuildPhysicsTable(const G4ParticleDefinition& photon);
71
72
73 G4VParticleChange* PostStepDoIt(const G4Track& aTrack, const G4Step& aStep);
74
75 // For testing purpose only
76 G4double DumpMeanFreePath(const G4Track& aTrack,
77 G4double previousStepSize,
78 G4ForceCondition* condition)
79 { return GetMeanFreePath(aTrack, previousStepSize, condition); }
80
81 protected:
82
83 G4double GetMeanFreePath(const G4Track& aTrack,
84 G4double previousStepSize,
85 G4ForceCondition* condition);
86
87 private:
88
89 // Hide copy constructor and assignment operator as private
90 G4LowEnergyGammaConversion& operator=(const G4LowEnergyGammaConversion &right);
91 G4LowEnergyGammaConversion(const G4LowEnergyGammaConversion& );
92
93 G4double ScreenFunction1(G4double screenVariable);
94 G4double ScreenFunction2(G4double screenVariable);
95
96 G4double lowEnergyLimit; // low energy limit applied to the process
97 G4double highEnergyLimit; // high energy limit applied to the process
98
99 G4RDVEMDataSet* meanFreePathTable;
100 G4RDVCrossSectionHandler* crossSectionHandler;
101
102 G4RDVRangeTest* rangeTest;
103
104 const G4double intrinsicLowEnergyLimit; // intrinsic validity range
105 const G4double intrinsicHighEnergyLimit;
106
107 const G4double smallEnergy;
108
109 };
110
111 #endif
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