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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 "G4Material.hh"
>> 65 #include "G4Element.hh"
>> 66 #include "G4ElementVector.hh"
64 #include "G4NistManager.hh" 67 #include "G4NistManager.hh"
65 #include "G4ParticleDefinition.hh" << 68 #include "G4ThreeVector.hh"
>> 69 #include "G4Pow.hh"
>> 70 #include "G4LossTableManager.hh"
>> 71
>> 72 class G4ParticleDefinition;
66 73
67 //....oooOO0OOooo........oooOO0OOooo........oo 74 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
68 75
69 class G4IonCoulombCrossSection 76 class G4IonCoulombCrossSection
70 { 77 {
71 public: <<
72 78
73 explicit G4IonCoulombCrossSection(); << 79 public:
74 80
75 ~G4IonCoulombCrossSection() = default; << 81 G4IonCoulombCrossSection();
76 82
77 void Initialise(const G4ParticleDefinition*, << 83 virtual ~G4IonCoulombCrossSection();
78 84
79 G4double NuclearCrossSection(); << 85 void Initialise(const G4ParticleDefinition*, G4double cosThetaLim);
80 86
81 G4double SampleCosineTheta(); << 87 G4double NuclearCrossSection();
82 88
83 void SetupKinematic(G4double kinEnergy, G4do << 89 G4double SampleCosineTheta();
84 90
85 void SetupTarget(G4double Z, G4double kinEne << 91 inline void SetupParticle(const G4ParticleDefinition*);
86 92
87 inline void SetupParticle(const G4ParticleDe << 93 void SetupKinematic(G4double kinEnergy, G4double cut,G4int iz);
88 94
89 inline G4double GetMomentum2(); << 95 void SetupTarget(G4double Z, G4double kinEnergy,G4int heavycorr);
90 96
91 G4IonCoulombCrossSection & operator= << 97 inline G4double GetMomentum2();
92 (const G4IonCoulombCrossSection &right) = d <<
93 G4IonCoulombCrossSection(const G4IonCoulomb <<
94 98
95 private: 99 private:
>> 100 void SetScreenRSquare(G4int iz);
>> 101
>> 102
>> 103 G4IonCoulombCrossSection & operator=(const G4IonCoulombCrossSection &right);
>> 104 G4IonCoulombCrossSection(const G4IonCoulombCrossSection&);
>> 105
>> 106
>> 107
>> 108 const G4ParticleDefinition* theProton;
>> 109
>> 110 G4NistManager* fNistManager;
>> 111
>> 112 protected:
>> 113 G4double coeff;
>> 114
>> 115 //cost - min - max
>> 116 G4double cosThetaMin;// def 1.0
>> 117 G4double cosThetaMax;// def -1.0
96 118
97 void SetScreenRSquare(G4int iz); << 119 //SetupTarget
>> 120 G4double cosTetMinNuc;// -->cosThetaMin
>> 121 G4double cosTetMaxNuc;// -->cosThetaMax
98 122
99 const G4ParticleDefinition* theProton; <<
100 123
101 G4NistManager* fNistManager; << 124 //cross section
102 G4Pow* fG4pow; << 125 G4double nucXSection;
103 126
104 G4double coeff; << 127 //energy cut
>> 128 G4double ecut;
>> 129 G4double etag;
>> 130
>> 131 // projectile........................
>> 132 const G4ParticleDefinition* particle;
>> 133
>> 134 G4double chargeSquare;
>> 135 G4double spin;
>> 136 G4double mass;
>> 137
>> 138 //lab of incedent particle
>> 139 G4double tkinLab;
>> 140 G4double momLab2;
>> 141 G4double invbetaLab2;
>> 142
>> 143 //relative system with nucleus
>> 144 G4double tkin;
>> 145 G4double mom2;
>> 146 G4double invbeta2;
>> 147
>> 148 // target nucleus
>> 149 G4double targetZ;
>> 150 G4double targetMass;
>> 151 G4double screenZ;
>> 152
>> 153
>> 154 private:
>> 155
>> 156 G4double alpha2;
>> 157 G4double ScreenRSquare;
105 158
106 //cost - min - max <<
107 G4double cosThetaMin;// def 1 <<
108 G4double cosThetaMax;// def - <<
109 //SetupTarget <<
110 G4double cosTetMinNuc;// -->c <<
111 G4double cosTetMaxNuc;// -->c <<
112 <<
113 //cross section <<
114 G4double nucXSection; <<
115 <<
116 //energy <<
117 G4double etag; <<
118 <<
119 // projectile........................ <<
120 const G4ParticleDefinition* particle; <<
121 <<
122 G4double chargeSquare; <<
123 G4double spin; <<
124 G4double mass; <<
125 <<
126 //lab of incedent particle <<
127 G4double tkinLab; <<
128 G4double momLab2; <<
129 G4double invbetaLab2; <<
130 <<
131 //relative system with nucleus <<
132 G4double tkin; <<
133 G4double mom2; <<
134 G4double invbeta2; <<
135 <<
136 // target nucleus <<
137 G4double targetZ; <<
138 G4double targetMass; <<
139 G4double screenZ; <<
140 G4double alpha2; <<
141 G4double ScreenRSquare; <<
142 }; 159 };
143 160
>> 161
144 //....oooOO0OOooo........oooOO0OOooo........oo 162 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
145 163
146 inline << 164 inline void G4IonCoulombCrossSection::SetupParticle(const G4ParticleDefinition* p)
147 void G4IonCoulombCrossSection::SetupParticle(c <<
148 { 165 {
149 particle = p; << 166 particle = p;
150 mass = particle->GetPDGMass(); << 167 mass = particle->GetPDGMass();
151 spin = particle->GetPDGSpin(); << 168 spin = particle->GetPDGSpin();
152 if(0.0 != spin) { spin = 0.5; } << 169 if(0.0 != spin) { spin = 0.5; }
153 G4double q = particle->GetPDGCharge()/CLHEP: << 170 G4double q = std::fabs(particle->GetPDGCharge()/CLHEP::eplus);
154 chargeSquare = q*q; << 171 chargeSquare = q*q;
155 tkin = 0.0; << 172 tkin = 0.0;
156 } 173 }
157 //....oooOO0OOooo........oooOO0OOooo........oo 174 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
158 175
159 inline G4double G4IonCoulombCrossSection::GetM << 176
160 { << 177 inline G4double G4IonCoulombCrossSection::GetMomentum2(){
161 return mom2; << 178 return mom2;
162 } 179 }
163 //....oooOO0OOooo........oooOO0OOooo........oo 180 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
164 181
165 #endif 182 #endif
166 183
167 184
168 185