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25 // 25 //
26 // Geant4 Class header file 26 // Geant4 Class header file
27 // 27 //
28 // File name: G4StokesVector 28 // File name: G4StokesVector
29 // 29 //
30 // Author: Andreas Schaelicke 30 // Author: Andreas Schaelicke
31 // 31 //
32 // Class Description: 32 // Class Description:
33 // Provides Stokesvector representation empl 33 // Provides Stokesvector representation employed in implementation of
34 // polarized processes. 34 // polarized processes.
35 // - store three components of a stokesvecto 35 // - store three components of a stokesvector
36 // - distinguish between boson or fermion st 36 // - distinguish between boson or fermion state (different transformations)
37 // - provide unique definition of reference 37 // - provide unique definition of reference frame (cf. G4PolarizationHelper)
38 38
39 #ifndef G4StokesVector_h 39 #ifndef G4StokesVector_h
40 #define G4StokesVector_h 1 40 #define G4StokesVector_h 1
41 41
42 #include "G4ThreeVector.hh" 42 #include "G4ThreeVector.hh"
43 #include "G4RotationMatrix.hh" 43 #include "G4RotationMatrix.hh"
44 44
45 class G4StokesVector : public G4ThreeVector 45 class G4StokesVector : public G4ThreeVector
46 { 46 {
47 public: 47 public:
48 G4StokesVector(); 48 G4StokesVector();
49 explicit G4StokesVector(const G4ThreeVector& 49 explicit G4StokesVector(const G4ThreeVector& v);
50 ~G4StokesVector() = default; 50 ~G4StokesVector() = default;
51 51
52 G4bool IsZero() const; 52 G4bool IsZero() const;
53 53
54 inline G4double p1() const { return x(); } 54 inline G4double p1() const { return x(); }
55 inline G4double p2() const { return y(); } 55 inline G4double p2() const { return y(); }
56 inline G4double p3() const { return z(); } 56 inline G4double p3() const { return z(); }
57 57
58 inline G4double Transverse() const { return 58 inline G4double Transverse() const { return perp(); }
59 59
60 inline G4ThreeVector PolSqr() const 60 inline G4ThreeVector PolSqr() const
61 { 61 {
62 return G4ThreeVector(x() * x(), y() * y(), 62 return G4ThreeVector(x() * x(), y() * y(), z() * z());
63 } 63 }
64 inline G4ThreeVector PolSqrt() const 64 inline G4ThreeVector PolSqrt() const
65 { 65 {
66 return G4ThreeVector(std::sqrt(x()), std:: 66 return G4ThreeVector(std::sqrt(x()), std::sqrt(y()), std::sqrt(z()));
67 } 67 }
68 G4ThreeVector PolError(const G4StokesVector& 68 G4ThreeVector PolError(const G4StokesVector& sum2, long n);
69 69
70 // Ratio of 3-vectors. 70 // Ratio of 3-vectors.
71 G4ThreeVector PolDiv(const G4StokesVector&); 71 G4ThreeVector PolDiv(const G4StokesVector&);
72 72
73 inline void SetPhoton() { fIsPhoton = true; 73 inline void SetPhoton() { fIsPhoton = true; }
74 74
75 void RotateAz(G4ThreeVector nInteractionFram 75 void RotateAz(G4ThreeVector nInteractionFrame,
76 G4ThreeVector particleDirectio 76 G4ThreeVector particleDirection);
77 void InvRotateAz(G4ThreeVector nInteractionF 77 void InvRotateAz(G4ThreeVector nInteractionFrame,
78 G4ThreeVector particleDirec 78 G4ThreeVector particleDirection);
79 void RotateAz(G4double cosphi, G4double sinp 79 void RotateAz(G4double cosphi, G4double sinphi);
80 G4double GetBeta(); 80 G4double GetBeta();
81 81
82 void DiceUniform(); 82 void DiceUniform();
83 void DiceP1(); 83 void DiceP1();
84 void DiceP2(); 84 void DiceP2();
85 void DiceP3(); 85 void DiceP3();
86 86
87 void FlipP3(); 87 void FlipP3();
88 88
89 // standard vectors: 89 // standard vectors:
90 static const G4StokesVector ZERO; 90 static const G4StokesVector ZERO;
91 static const G4StokesVector P1; 91 static const G4StokesVector P1;
92 static const G4StokesVector P2; 92 static const G4StokesVector P2;
93 static const G4StokesVector P3; 93 static const G4StokesVector P3;
94 static const G4StokesVector M1; 94 static const G4StokesVector M1;
95 static const G4StokesVector M2; 95 static const G4StokesVector M2;
96 static const G4StokesVector M3; 96 static const G4StokesVector M3;
97 97
98 private: 98 private:
99 G4bool fIsPhoton; 99 G4bool fIsPhoton;
100 }; 100 };
101 101
102 #endif 102 #endif
103 103