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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> <<
62 <<
63 #include "globals.hh" 61 #include "globals.hh"
>> 62 #include "G4Material.hh"
>> 63 #include "G4Element.hh"
>> 64 #include "G4ElementVector.hh"
64 #include "G4NistManager.hh" 65 #include "G4NistManager.hh"
65 #include "G4ParticleDefinition.hh" << 66 #include "G4ThreeVector.hh"
>> 67 #include "G4Pow.hh"
>> 68 #include "G4LossTableManager.hh"
>> 69
>> 70 class G4ParticleDefinition;
66 71
67 //....oooOO0OOooo........oooOO0OOooo........oo 72 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
68 73
69 class G4IonCoulombCrossSection 74 class G4IonCoulombCrossSection
70 { 75 {
71 public: <<
72 76
73 explicit G4IonCoulombCrossSection(); << 77 public:
74 78
75 ~G4IonCoulombCrossSection() = default; << 79 G4IonCoulombCrossSection();
76 80
77 void Initialise(const G4ParticleDefinition*, << 81 virtual ~G4IonCoulombCrossSection();
78 82
79 G4double NuclearCrossSection(); << 83 void Initialise(const G4ParticleDefinition*, G4double cosThetaLim);
80 84
81 G4double SampleCosineTheta(); << 85 G4double NuclearCrossSection();
82 86
83 void SetupKinematic(G4double kinEnergy, G4do << 87 G4double SampleCosineTheta();
84 88
85 void SetupTarget(G4double Z, G4double kinEne << 89 inline void SetupParticle(const G4ParticleDefinition*);
86 90
87 inline void SetupParticle(const G4ParticleDe << 91 void SetupKinematic(G4double kinEnergy, G4double cut,G4int iz);
88 92
89 inline G4double GetMomentum2(); << 93 void SetupTarget(G4double Z, G4double kinEnergy,G4int heavycorr);
90 94
91 G4IonCoulombCrossSection & operator= << 95 inline G4double GetMomentum2();
92 (const G4IonCoulombCrossSection &right) = d <<
93 G4IonCoulombCrossSection(const G4IonCoulomb <<
94 96
95 private: 97 private:
>> 98 void SetScreenRSquare(G4int iz);
>> 99
>> 100
>> 101 G4IonCoulombCrossSection & operator=(const G4IonCoulombCrossSection &right);
>> 102 G4IonCoulombCrossSection(const G4IonCoulombCrossSection&);
>> 103
>> 104
>> 105
>> 106 const G4ParticleDefinition* theProton;
>> 107
>> 108 G4NistManager* fNistManager;
>> 109
>> 110 protected:
>> 111 G4double coeff;
>> 112
>> 113 //cost - min - max
>> 114 G4double cosThetaMin;// def 1.0
>> 115 G4double cosThetaMax;// def -1.0
96 116
97 void SetScreenRSquare(G4int iz); << 117 //SetupTarget
>> 118 G4double cosTetMinNuc;// -->cosThetaMin
>> 119 G4double cosTetMaxNuc;// -->cosThetaMax
98 120
99 const G4ParticleDefinition* theProton; <<
100 121
101 G4NistManager* fNistManager; << 122 //cross section
102 G4Pow* fG4pow; << 123 G4double nucXSection;
103 124
104 G4double coeff; << 125 //energy cut
>> 126 G4double ecut;
>> 127 G4double etag;
>> 128
>> 129 // projectile........................
>> 130 const G4ParticleDefinition* particle;
>> 131
>> 132 G4double chargeSquare;
>> 133 G4double spin;
>> 134 G4double mass;
>> 135
>> 136 //lab of incedent particle
>> 137 G4double tkinLab;
>> 138 G4double momLab2;
>> 139 G4double invbetaLab2;
>> 140
>> 141 //relative system with nucleus
>> 142 G4double tkin;
>> 143 G4double mom2;
>> 144 G4double invbeta2;
>> 145
>> 146 // target nucleus
>> 147 G4double targetZ;
>> 148 G4double targetMass;
>> 149 G4double screenZ;
>> 150
>> 151
>> 152 private:
>> 153
>> 154 G4double alpha2;
>> 155 G4double ScreenRSquare;
105 156
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 }; 157 };
143 158
>> 159
144 //....oooOO0OOooo........oooOO0OOooo........oo 160 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
145 161
146 inline << 162 inline void G4IonCoulombCrossSection::SetupParticle(const G4ParticleDefinition* p)
147 void G4IonCoulombCrossSection::SetupParticle(c <<
148 { 163 {
149 particle = p; << 164 particle = p;
150 mass = particle->GetPDGMass(); << 165 mass = particle->GetPDGMass();
151 spin = particle->GetPDGSpin(); << 166 spin = particle->GetPDGSpin();
152 if(0.0 != spin) { spin = 0.5; } << 167 if(0.0 != spin) { spin = 0.5; }
153 G4double q = particle->GetPDGCharge()/CLHEP: << 168 G4double q = std::fabs(particle->GetPDGCharge()/eplus);
154 chargeSquare = q*q; << 169 chargeSquare = q*q;
155 tkin = 0.0; << 170 tkin = 0.0;
156 } 171 }
157 //....oooOO0OOooo........oooOO0OOooo........oo 172 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
158 173
159 inline G4double G4IonCoulombCrossSection::GetM << 174
160 { << 175 inline G4double G4IonCoulombCrossSection::GetMomentum2(){
161 return mom2; << 176 return mom2;
162 } 177 }
163 //....oooOO0OOooo........oooOO0OOooo........oo 178 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
164 179
165 #endif 180 #endif
166 181
167 182
168 183