Geant4  10.00.p02
G4ScreeningMottCrossSection.hh
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25 //
26 // G4ScreeningMottCrossSection.hh
27 //-------------------------------------------------------------------
28 //
29 // GEANT4 Class header file
30 //
31 // File name: G4ScreeningMottCrossSection
32 //
33 // Author: Cristina Consolandi
34 //
35 // Creation date: 20.10.2011
36 //
37 // Modifications:
38 // 27-05-2012 Added Analytic Fitting to the Mott Cross Section by means of G4MottCoefficients class.
39 //
40 //
41 // Class Description:
42 // Computation of electron Coulomb Scattering Cross Section.
43 // Suitable for high energy electrons and light target materials.
44 //
45 // Reference:
46 // M.J. Boschini et al.
47 // "Non Ionizing Energy Loss induced by Electrons in the Space Environment"
48 // Proc. of the 13th International Conference on Particle Physics and Advanced Technology
49 // (13th ICPPAT, Como 3-7/10/2011), World Scientific (Singapore).
50 // Available at: http://arxiv.org/abs/1111.4042v4
51 //
52 // 1) Mott Differential Cross Section Approximation:
53 // For Target material up to Z=92 (U):
54 // As described in http://arxiv.org/abs/1111.4042v4
55 // par. 2.1 , eq. (16)-(17)
56 // Else (Z>92):
57 // W. A. McKinley and H. Fashbach, Phys. Rev. 74, (1948) 1759.
58 // 2) Screening coefficient:
59 // vomn G. Moliere, Z. Naturforsh A2 (1947), 133-145; A3 (1948), 78.
60 // 3) Nuclear Form Factor:
61 // A.V. Butkevich et al. Nucl. Instr. and Meth. in Phys. Res. A 488 (2002), 282-294.
62 //
63 // ----------------------------------------------------------------------------------------
64 
65 //
66 #ifndef G4ScreeningMottCrossSection_h
67 #define G4ScreeningMottCrossSection_h 1
68 
69 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
70 
71 
72 #include "G4MottCoefficients.hh"
73 #include "globals.hh"
74 #include "G4Material.hh"
75 #include "G4Element.hh"
76 #include "G4ElementVector.hh"
77 #include "G4NistManager.hh"
78 #include "G4ThreeVector.hh"
79 #include "G4Pow.hh"
80 #include "G4LossTableManager.hh"
81 
83 
84 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
85 
87 {
88 
89 public:
90 
92 
94 
95  void Initialise(const G4ParticleDefinition*, G4double cosThetaLim);
96 
99 
100 
101 
102  inline void SetupParticle(const G4ParticleDefinition*);
103  void SetupKinematic(G4double kinEnergy ,G4double Z);
104 
107 
108  inline G4double GetMom2CM()const;
109  inline G4double GetMom2Lab()const;
110  inline G4double GetTrec() const;
111  inline G4double GetScreeningCoefficient() const;
112  inline G4double GetTotalCross() const;
113 
114 
115 
121 
122 
123 private:
124 
127 
128 
131 
133 
134  //cost - min - max
136  G4double cosThetaMax;// def -1.0
137 
140 
141 
142  //energy cut
145 
146  // projectile........................
148 
151 
152  //lab of incedent particle
156 
157  //relative system with nucleus
164 
165 
166  // target nucleus
173 
174  //constants
178 
179 };
180 
181 
182 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
183 
185 {
186  particle = p;
187  mass = particle->GetPDGMass();
188  spin = particle->GetPDGSpin();
189  if(0.0 != spin) { spin = 0.5; }
190  tkin = 0.0;
191 }
192 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
193 
194 
196 {
197  return mom2;
198 }
199 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
200 
201 
203 {
204  return momLab2;
205 }
206 
207 
208 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
209 
211 {
212  return Trec;
213 }
214 
215 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
216 
218 {
219  return As;
220 }
221 
222 
223 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
224 
226 {
227  return TotalCross;
228 }
229 
230 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
231 
232 #endif
233 
234 
const G4ParticleDefinition * particle
CLHEP::Hep3Vector G4ThreeVector
void Initialise(const G4ParticleDefinition *, G4double cosThetaLim)
void SetupParticle(const G4ParticleDefinition *)
G4ScreeningMottCrossSection & operator=(const G4ScreeningMottCrossSection &right)
G4double GetPDGMass() const
G4double GetPDGSpin() const
double G4double
Definition: G4Types.hh:76
void SetupKinematic(G4double kinEnergy, G4double Z)