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G4IonCoulombCrossSection.hh
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25 //
26 // G4IonCoulombCrossSection.hh
27 //-------------------------------------------------------------------
28 //
29 // GEANT4 Class header file
30 //
31 // File name: G4IonCoulombCrossSection
32 //
33 // Author: Cristina Consolandi
34 //
35 // Creation date: 05.10.2010 from G4eCoulombScatteringModel
36 //
37 // Class Description:
38 // Computation of Screen-Coulomb Cross Section
39 // for protons, alpha and heavy Ions
40 //
41 //
42 // Reference:
43 // M.J. Boschini et al. "Nuclear and Non-Ionizing Energy-Loss
44 // for Coulomb Scattered Particles from Low Energy up to Relativistic
45 // Regime in Space Radiation Environment"
46 // Accepted for publication in the Proceedings of the ICATPP Conference
47 // on Cosmic Rays for Particle and Astroparticle Physics, Villa Olmo, 7-8
48 // October, 2010, to be published by World Scientific (Singapore).
49 //
50 // Available for downloading at:
51 // http://arxiv.org/abs/1011.4822
52 //
53 // -------------------------------------------------------------------
54 
55 //
56 #ifndef G4IonCoulombCrossSection_h
57 #define G4IonCoulombCrossSection_h 1
58 
59 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
60 
62 
63 #include "globals.hh"
64 #include "G4NistManager.hh"
65 #include "G4ParticleDefinition.hh"
66 
67 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
68 
70 {
71 public:
72 
73  explicit G4IonCoulombCrossSection();
74 
75  virtual ~G4IonCoulombCrossSection();
76 
77  void Initialise(const G4ParticleDefinition*, G4double cosThetaLim);
78 
80 
82 
83  void SetupKinematic(G4double kinEnergy, G4double tmass);
84 
85  void SetupTarget(G4double Z, G4double kinEnergy, G4int heavycorr);
86 
87  inline void SetupParticle(const G4ParticleDefinition*);
88 
89  inline G4double GetMomentum2();
90 
91 private:
92 
93  void SetScreenRSquare(G4int iz);
94 
95  G4IonCoulombCrossSection & operator=
96  (const G4IonCoulombCrossSection &right) = delete;
98 
99  const G4ParticleDefinition* theProton;
100 
101  G4NistManager* fNistManager;
102  G4Pow* fG4pow;
103 
104  G4double coeff;
105 
106  //cost - min - max
107  G4double cosThetaMin;// def 1.0
108  G4double cosThetaMax;// def -1.0
109  //SetupTarget
110  G4double cosTetMinNuc;// -->cosThetaMin
111  G4double cosTetMaxNuc;// -->cosThetaMax
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 };
143 
144 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
145 
146 inline
148 {
149  particle = p;
150  mass = particle->GetPDGMass();
151  spin = particle->GetPDGSpin();
152  if(0.0 != spin) { spin = 0.5; }
153  G4double q = particle->GetPDGCharge()/CLHEP::eplus;
154  chargeSquare = q*q;
155  tkin = 0.0;
156 }
157 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
158 
160 {
161  return mom2;
162 }
163 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
164 
165 #endif
166 
167 
void SetupTarget(G4double Z, G4double kinEnergy, G4int heavycorr)
void SetupKinematic(G4double kinEnergy, G4double tmass)
Definition: G4Pow.hh:56
const char * p
Definition: xmltok.h:285
int G4int
Definition: G4Types.hh:78
void SetupParticle(const G4ParticleDefinition *)
static constexpr double eplus
G4double GetPDGMass() const
G4double GetPDGSpin() const
double G4double
Definition: G4Types.hh:76
G4double GetPDGCharge() const
void Initialise(const G4ParticleDefinition *, G4double cosThetaLim)