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G4GammaXTRadiator.hh
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27 // $Id: G4GammaXTRadiator.hh 97385 2016-06-02 09:59:53Z gcosmo $
28 //
29 //
31 //
32 // Rough process describing a radiator of X-ray transition radiation.
33 // Thicknesses of plates and gas gaps are distributed according to gamma
34 // distribution. x are thicknesses of plates or gas gaps:
35 //
36 // p(x) = (alpha/<x>)^alpha * x^(alpha-1) * std::exp(-alpha*x/<x>) / G(alpha)
37 //
38 // G(alpha) is Euler's gamma function.
39 // Plates have mean <x> = fPlateThick > 0 and power alpha = fAlphaPlate > 0 :
40 // Gas gaps have mean <x> = fGasThick > 0 and power alpha = fAlphaGas > 0 :
41 // We suppose that:
42 // formation zone ~ mean thickness << absorption length
43 // for each material and in the range 1-100 keV. This allows us to simplify
44 // interference effects in radiator stack (GetStackFactor method).
45 //
46 //
47 // History:
48 // 21.01.02 V. Grichine, first version
49 //
50 
51 
52 #ifndef G4GammaXTRadiator_h
53 #define G4GammaXTRadiator_h 1
54 
55 #include "G4VXTRenergyLoss.hh"
56 
58 {
59 public:
60 
61  explicit G4GammaXTRadiator (G4LogicalVolume *anEnvelope,
65  const G4String & processName = "XTRgammaRadiator");
67 
68  // Pure virtual function from base class
69 
71  G4double varAngle) override;
72 
73 private:
74 
75 };
76 
77 #endif
78 
79 
80 
81 
82 
83 
G4GammaXTRadiator(G4LogicalVolume *anEnvelope, G4double, G4double, G4Material *, G4Material *, G4double, G4double, G4int, const G4String &processName="XTRgammaRadiator")
G4double GetStackFactor(G4double energy, G4double gamma, G4double varAngle) override
int G4int
Definition: G4Types.hh:78
G4double energy(const ThreeVector &p, const G4double m)
double G4double
Definition: G4Types.hh:76