Geant4  10.02.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 
82 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
83 
84 static const G4int DIM = 750;
85 
87 
89 {
90 
91 public:
92 
94 
96 
97  void Initialise(const G4ParticleDefinition*, G4double cosThetaLim);
98 
101 
102 
103 
104  inline void SetupParticle(const G4ParticleDefinition*);
105  void SetupKinematic(G4double kinEnergy ,G4double Z);
106 
109 
110  inline G4double GetMom2CM()const;
111  inline G4double GetMom2Lab()const;
112  inline G4double GetTrec() const;
113  inline G4double GetScreeningCoefficient() const;
114  inline G4double GetTotalCross() const;
115 
116 
117 
123 
124 
125 private:
126 
129 
130 
134 
136 
137  //cost - min - max
139  G4double cosThetaMax;// def -1.0
140 
143 
144 
145  //energy cut
148 
149  // projectile........................
151 
154 
155  //lab of incedent particle
159 
160  //relative system with nucleus
167 
168 
169  // target nucleus
176 
177  //constants
181 
182  //angle
184 };
185 
186 
187 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
188 
190 {
191  particle = p;
192  mass = particle->GetPDGMass();
193  spin = particle->GetPDGSpin();
194  if(0.0 != spin) { spin = 0.5; }
195  tkin = 0.0;
196 }
197 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
198 
199 
201 {
202  return mom2;
203 }
204 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
205 
206 
208 {
209  return momLab2;
210 }
211 
212 
213 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
214 
216 {
217  return Trec;
218 }
219 
220 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
221 
223 {
224  return As;
225 }
226 
227 
228 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
229 
231 {
232  return TotalCross;
233 }
234 
235 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
236 
237 #endif
238 
239 
static const G4int DIM
const G4ParticleDefinition * particle
CLHEP::Hep3Vector G4ThreeVector
void Initialise(const G4ParticleDefinition *, G4double cosThetaLim)
Definition: G4Pow.hh:56
void SetupParticle(const G4ParticleDefinition *)
G4ScreeningMottCrossSection & operator=(const G4ScreeningMottCrossSection &right)
int G4int
Definition: G4Types.hh:78
G4double GetPDGMass() const
G4double GetPDGSpin() const
double G4double
Definition: G4Types.hh:76
void SetupKinematic(G4double kinEnergy, G4double Z)