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25 //
26 //
27 // -------------------------------------------------------------------
28 //
29 // Geant4 Header G4UAtomicDeexcitation
30 //
31 // Authors: Alfonso Mantero (Alfonso.Mantero@ge.infn.it)
32 //
33 // Created 22 April 2010 from old G4AtomicDeexcitation class
34 //
35 // Modified:
36 // ---------
37 //
38 //
39 // -------------------------------------------------------------------
40 //
41 // Class description:
42 // Implementation of atomic deexcitation
43 //
44 // -------------------------------------------------------------------
45
46 #ifndef G4UAtomicDeexcitation_h
47 #define G4UAtomicDeexcitation_h 1
48
49 #include "G4VAtomDeexcitation.hh"
50 #include "G4AtomicShell.hh"
51 #include "globals.hh"
52 #include "G4DynamicParticle.hh"
53 #include <vector>
54
55 class G4AtomicTransitionManager;
56 class G4VhShellCrossSection;
57 class G4EmCorrections;
58 class G4Material;
59
60 class G4UAtomicDeexcitation : public G4VAtomDeexcitation
61 {
62 public:
63 explicit G4UAtomicDeexcitation();
64 virtual ~G4UAtomicDeexcitation();
65
66 //=================================================================
67 // methods that are requested to be implemented by the interface
68 //=================================================================
69 /// initialisation methods
70 void InitialiseForNewRun() override;
71 void InitialiseForExtraAtom(G4int Z) override;
72
73 /// Set threshold energy for fluorescence
74 void SetCutForSecondaryPhotons(G4double cut);
75
76 /// Set threshold energy for Auger electron production
77 void SetCutForAugerElectrons(G4double cut);
78
79
80 /// Get atomic shell by shell index, used by discrete processes
81 /// (for example, photoelectric), when shell vacancy sampled by the model
82 const G4AtomicShell* GetAtomicShell(G4int Z,
83 G4AtomicShellEnumerator shell) override;
84
85 /// generation of deexcitation for given atom, shell vacancy and cuts
86 void GenerateParticles(std::vector<G4DynamicParticle*>* secVect,
87 const G4AtomicShell*,
88 G4int Z,
89 G4double gammaCut,
90 G4double eCut) override;
91
92 /// access or compute PIXE cross section
93 G4double GetShellIonisationCrossSectionPerAtom(const G4ParticleDefinition*,
94 G4int Z,
95 G4AtomicShellEnumerator shell,
96 G4double kinE,
97 const G4Material* mat = nullptr) override;
98
99 /// access or compute PIXE cross section
100 G4double ComputeShellIonisationCrossSectionPerAtom(const G4ParticleDefinition*,
101 G4int Z,
102 G4AtomicShellEnumerator shell,
103 G4double kinE,
104 const G4Material* mat = nullptr) override;
105
106 G4UAtomicDeexcitation(G4UAtomicDeexcitation &) = delete;
107 G4UAtomicDeexcitation & operator=(const G4UAtomicDeexcitation &right) = delete;
108
109 private:
110 /// Decides wether a radiative transition is possible and, if it is,
111 /// returns the identity of the starting shell for the transition
112 G4int SelectTypeOfTransition(G4int Z, G4int shellId);
113
114 /// Generates a particle from a radiative transition and returns it
115 G4DynamicParticle* GenerateFluorescence(G4int Z, G4int shellId,
116 G4int provShellId);
117
118 /// Generates a particle from a non-radiative transition and returns it
119 G4DynamicParticle* GenerateAuger(G4int Z, G4int shellId);
120
121 ///Auger cascade by Burkhant Suerfu on March 24 2015 (Bugzilla 1727)
122 ///Generates auger electron cascade.
123 G4DynamicParticle* GenerateAuger(G4int Z, G4int shellId, G4int& newAugerShellId);
124 G4AtomicTransitionManager* transitionManager;
125
126 /// Data member for the calculation of the proton and alpha ionisation XS
127 G4VhShellCrossSection* PIXEshellCS;
128 G4VhShellCrossSection* anaPIXEshellCS;
129 G4VhShellCrossSection* ePIXEshellCS;
130 G4EmCorrections* emcorr;
131
132 const G4ParticleDefinition* theElectron;
133 const G4ParticleDefinition* thePositron;
134
135 //Auger cascade by Burkhant Suerfu on March 24 2015 (Bugzilla 1727)
136 //Data member to keep track of cascading vacancies.
137 std::vector<int> vacancyArray;
138
139 /// Data member which stores the shells to be filled by
140 /// the radiative transition
141 G4double minGammaEnergy;
142 G4double minElectronEnergy;
143 G4int newShellId;
144 };
145
146 #endif
147
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