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25 // 25 //
26 // G4IonCoulombCrossSection.hh 26 // G4IonCoulombCrossSection.hh
27 //-------------------------------------------- 27 //-------------------------------------------------------------------
28 // 28 //
29 // GEANT4 Class header file 29 // GEANT4 Class header file
30 // 30 //
31 // File name: G4IonCoulombCrossSection 31 // File name: G4IonCoulombCrossSection
32 // 32 //
33 // Author: Cristina Consolandi 33 // Author: Cristina Consolandi
34 // 34 //
35 // Creation date: 05.10.2010 from G4eCoulombSc 35 // Creation date: 05.10.2010 from G4eCoulombScatteringModel
36 // 36 //
37 // Class Description: 37 // Class Description:
38 // Computation of Screen-Coulomb Cross Se 38 // Computation of Screen-Coulomb Cross Section
39 // for protons, alpha and heavy Ions 39 // for protons, alpha and heavy Ions
40 // 40 //
41 // 41 //
42 // Reference: 42 // Reference:
43 // M.J. Boschini et al. "Nuclear and Non- 43 // M.J. Boschini et al. "Nuclear and Non-Ionizing Energy-Loss
44 // for Coulomb Scattered Particles from L 44 // for Coulomb Scattered Particles from Low Energy up to Relativistic
45 // Regime in Space Radiation Environment" 45 // Regime in Space Radiation Environment"
46 // Accepted for publication in the Procee 46 // Accepted for publication in the Proceedings of the ICATPP Conference
47 // on Cosmic Rays for Particle and Astrop 47 // on Cosmic Rays for Particle and Astroparticle Physics, Villa Olmo, 7-8
48 // October, 2010, to be published by Wor 48 // October, 2010, to be published by World Scientific (Singapore).
49 // 49 //
50 // Available for downloading at: 50 // Available for downloading at:
51 // http://arxiv.org/abs/1011.4822 51 // http://arxiv.org/abs/1011.4822
52 // 52 //
53 // ------------------------------------------- 53 // -------------------------------------------------------------------
54 54
55 // 55 //
56 #ifndef G4IonCoulombCrossSection_h 56 #ifndef G4IonCoulombCrossSection_h
57 #define G4IonCoulombCrossSection_h 1 57 #define G4IonCoulombCrossSection_h 1
58 58
59 //....oooOO0OOooo........oooOO0OOooo........oo 59 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
60 60
61 #include <CLHEP/Units/SystemOfUnits.h> 61 #include <CLHEP/Units/SystemOfUnits.h>
62 62
63 #include "globals.hh" 63 #include "globals.hh"
64 #include "G4NistManager.hh" 64 #include "G4NistManager.hh"
65 #include "G4ParticleDefinition.hh" 65 #include "G4ParticleDefinition.hh"
66 66
67 //....oooOO0OOooo........oooOO0OOooo........oo 67 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
68 68
69 class G4IonCoulombCrossSection 69 class G4IonCoulombCrossSection
70 { 70 {
71 public: 71 public:
72 72
73 explicit G4IonCoulombCrossSection(); 73 explicit G4IonCoulombCrossSection();
74 74
75 ~G4IonCoulombCrossSection() = default; 75 ~G4IonCoulombCrossSection() = default;
76 76
77 void Initialise(const G4ParticleDefinition*, 77 void Initialise(const G4ParticleDefinition*, G4double cosThetaLim);
78 78
79 G4double NuclearCrossSection(); 79 G4double NuclearCrossSection();
80 80
81 G4double SampleCosineTheta(); 81 G4double SampleCosineTheta();
82 82
83 void SetupKinematic(G4double kinEnergy, G4do 83 void SetupKinematic(G4double kinEnergy, G4double tmass);
84 84
85 void SetupTarget(G4double Z, G4double kinEne 85 void SetupTarget(G4double Z, G4double kinEnergy, G4int heavycorr);
86 86
87 inline void SetupParticle(const G4ParticleDe 87 inline void SetupParticle(const G4ParticleDefinition*);
88 88
89 inline G4double GetMomentum2(); 89 inline G4double GetMomentum2();
90 90
91 G4IonCoulombCrossSection & operator= 91 G4IonCoulombCrossSection & operator=
92 (const G4IonCoulombCrossSection &right) = d 92 (const G4IonCoulombCrossSection &right) = delete;
93 G4IonCoulombCrossSection(const G4IonCoulomb 93 G4IonCoulombCrossSection(const G4IonCoulombCrossSection&) = delete;
94 94
95 private: 95 private:
96 96
97 void SetScreenRSquare(G4int iz); 97 void SetScreenRSquare(G4int iz);
98 98
99 const G4ParticleDefinition* theProton; 99 const G4ParticleDefinition* theProton;
100 100
101 G4NistManager* fNistManager; 101 G4NistManager* fNistManager;
102 G4Pow* fG4pow; 102 G4Pow* fG4pow;
103 103
104 G4double coeff; 104 G4double coeff;
105 105
106 //cost - min - max 106 //cost - min - max
107 G4double cosThetaMin;// def 1 107 G4double cosThetaMin;// def 1.0
108 G4double cosThetaMax;// def - 108 G4double cosThetaMax;// def -1.0
109 //SetupTarget 109 //SetupTarget
110 G4double cosTetMinNuc;// -->c 110 G4double cosTetMinNuc;// -->cosThetaMin
111 G4double cosTetMaxNuc;// -->c 111 G4double cosTetMaxNuc;// -->cosThetaMax
112 112
113 //cross section 113 //cross section
114 G4double nucXSection; 114 G4double nucXSection;
115 115
116 //energy 116 //energy
117 G4double etag; 117 G4double etag;
118 118
119 // projectile........................ 119 // projectile........................
120 const G4ParticleDefinition* particle; 120 const G4ParticleDefinition* particle;
121 121
122 G4double chargeSquare; 122 G4double chargeSquare;
123 G4double spin; 123 G4double spin;
124 G4double mass; 124 G4double mass;
125 125
126 //lab of incedent particle 126 //lab of incedent particle
127 G4double tkinLab; 127 G4double tkinLab;
128 G4double momLab2; 128 G4double momLab2;
129 G4double invbetaLab2; 129 G4double invbetaLab2;
130 130
131 //relative system with nucleus 131 //relative system with nucleus
132 G4double tkin; 132 G4double tkin;
133 G4double mom2; 133 G4double mom2;
134 G4double invbeta2; 134 G4double invbeta2;
135 135
136 // target nucleus 136 // target nucleus
137 G4double targetZ; 137 G4double targetZ;
138 G4double targetMass; 138 G4double targetMass;
139 G4double screenZ; 139 G4double screenZ;
140 G4double alpha2; 140 G4double alpha2;
141 G4double ScreenRSquare; 141 G4double ScreenRSquare;
142 }; 142 };
143 143
144 //....oooOO0OOooo........oooOO0OOooo........oo 144 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
145 145
146 inline 146 inline
147 void G4IonCoulombCrossSection::SetupParticle(c 147 void G4IonCoulombCrossSection::SetupParticle(const G4ParticleDefinition* p)
148 { 148 {
149 particle = p; 149 particle = p;
150 mass = particle->GetPDGMass(); 150 mass = particle->GetPDGMass();
151 spin = particle->GetPDGSpin(); 151 spin = particle->GetPDGSpin();
152 if(0.0 != spin) { spin = 0.5; } 152 if(0.0 != spin) { spin = 0.5; }
153 G4double q = particle->GetPDGCharge()/CLHEP: 153 G4double q = particle->GetPDGCharge()/CLHEP::eplus;
154 chargeSquare = q*q; 154 chargeSquare = q*q;
155 tkin = 0.0; 155 tkin = 0.0;
156 } 156 }
157 //....oooOO0OOooo........oooOO0OOooo........oo 157 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
158 158
159 inline G4double G4IonCoulombCrossSection::GetM 159 inline G4double G4IonCoulombCrossSection::GetMomentum2()
160 { 160 {
161 return mom2; 161 return mom2;
162 } 162 }
163 //....oooOO0OOooo........oooOO0OOooo........oo 163 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
164 164
165 #endif 165 #endif
166 166
167 167
168 168