1 | // |
---|
2 | // ******************************************************************** |
---|
3 | // * License and Disclaimer * |
---|
4 | // * * |
---|
5 | // * The Geant4 software is copyright of the Copyright Holders of * |
---|
6 | // * the Geant4 Collaboration. It is provided under the terms and * |
---|
7 | // * conditions of the Geant4 Software License, included in the file * |
---|
8 | // * LICENSE and available at http://cern.ch/geant4/license . These * |
---|
9 | // * include a list of copyright holders. * |
---|
10 | // * * |
---|
11 | // * Neither the authors of this software system, nor their employing * |
---|
12 | // * institutes,nor the agencies providing financial support for this * |
---|
13 | // * work make any representation or warranty, express or implied, * |
---|
14 | // * regarding this software system or assume any liability for its * |
---|
15 | // * use. Please see the license in the file LICENSE and URL above * |
---|
16 | // * for the full disclaimer and the limitation of liability. * |
---|
17 | // * * |
---|
18 | // * This code implementation is the result of the scientific and * |
---|
19 | // * technical work of the GEANT4 collaboration. * |
---|
20 | // * By using, copying, modifying or distributing the software (or * |
---|
21 | // * any work based on the software) you agree to acknowledge its * |
---|
22 | // * use in resulting scientific publications, and indicate your * |
---|
23 | // * acceptance of all terms of the Geant4 Software license. * |
---|
24 | // ******************************************************************** |
---|
25 | // |
---|
26 | // $Id: G4MuMinusCaptureCascade.hh,v 1.10 2007/07/05 18:19:14 dennis Exp $ |
---|
27 | // GEANT4 tag $Name: geant4-09-03 $ |
---|
28 | // |
---|
29 | // G4MuMinusCaptureCascade physics process -------- |
---|
30 | // Vladimir Ivanchenko, April 2000 |
---|
31 | // |
---|
32 | // Modified: |
---|
33 | // 14.11.06 Add inline functions (V.Ivanchenko) |
---|
34 | // |
---|
35 | //----------------------------------------------------------------------------- |
---|
36 | |
---|
37 | #ifndef G4MuMinusCaptureCascade_h |
---|
38 | #define G4MuMinusCaptureCascade_h 1 |
---|
39 | |
---|
40 | #include "globals.hh" |
---|
41 | #include "Randomize.hh" |
---|
42 | #include "G4ParticleDefinition.hh" |
---|
43 | #include "G4ThreeVector.hh" |
---|
44 | |
---|
45 | class G4GHEKinematicsVector; |
---|
46 | |
---|
47 | class G4MuMinusCaptureCascade |
---|
48 | { |
---|
49 | public: |
---|
50 | |
---|
51 | G4MuMinusCaptureCascade(); |
---|
52 | |
---|
53 | ~G4MuMinusCaptureCascade(); |
---|
54 | |
---|
55 | G4int DoCascade(const G4double Z, const G4double A, |
---|
56 | G4GHEKinematicsVector* Cascade); |
---|
57 | |
---|
58 | void DoBoundMuonMinusDecay(G4double Z, |
---|
59 | G4int* nCascade, G4GHEKinematicsVector* Cascade); |
---|
60 | |
---|
61 | G4double GetKShellEnergy(G4double Z); |
---|
62 | |
---|
63 | G4ThreeVector& GetRandomVec(); |
---|
64 | |
---|
65 | private: |
---|
66 | |
---|
67 | G4double GetLinApprox(G4int N, const G4double* X, const G4double* Y, |
---|
68 | G4double Xuser); |
---|
69 | |
---|
70 | void AddNewParticle(G4ParticleDefinition* aParticle, |
---|
71 | G4ThreeVector& Momentum, |
---|
72 | G4double mass, |
---|
73 | G4int* nParticle, |
---|
74 | G4GHEKinematicsVector* Cascade); |
---|
75 | |
---|
76 | // hide assignment operator as private |
---|
77 | G4MuMinusCaptureCascade& operator=(const G4MuMinusCaptureCascade &right); |
---|
78 | G4MuMinusCaptureCascade(const G4MuMinusCaptureCascade& ); |
---|
79 | |
---|
80 | G4double Emass, MuMass; |
---|
81 | G4ParticleDefinition* theElectron; |
---|
82 | G4ParticleDefinition* theGamma; |
---|
83 | G4ThreeVector randomVect; |
---|
84 | }; |
---|
85 | |
---|
86 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
---|
87 | |
---|
88 | inline G4double G4MuMinusCaptureCascade::GetLinApprox(G4int N, |
---|
89 | const G4double* X, |
---|
90 | const G4double* Y, |
---|
91 | G4double Xuser) |
---|
92 | { |
---|
93 | G4double Yuser; |
---|
94 | if(Xuser <= X[0]) Yuser = Y[0]; |
---|
95 | else if(Xuser >= X[N-1]) Yuser = Y[N-1]; |
---|
96 | else { |
---|
97 | G4int i; |
---|
98 | for (i=1; i<N; i++){ |
---|
99 | if(Xuser <= X[i]) break; |
---|
100 | } |
---|
101 | |
---|
102 | if(Xuser == X[i]) Yuser = Y[i]; |
---|
103 | else Yuser = Y[i-1] + (Y[i] - Y[i-1])*(Xuser - X[i-1])/(X[i] - X[i-1]); |
---|
104 | } |
---|
105 | return Yuser; |
---|
106 | } |
---|
107 | |
---|
108 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
---|
109 | |
---|
110 | inline G4ThreeVector& G4MuMinusCaptureCascade::GetRandomVec() |
---|
111 | { |
---|
112 | // |
---|
113 | // generate uniform vector |
---|
114 | // |
---|
115 | G4double cost = 2.0 * G4UniformRand() - 1.0; |
---|
116 | G4double sint = std::sqrt((1.0 - cost)*(1.0 + cost)); |
---|
117 | G4double Phi = twopi * G4UniformRand(); |
---|
118 | randomVect = G4ThreeVector(sint * std::cos(Phi), sint * std::sin(Phi), cost); |
---|
119 | return randomVect; |
---|
120 | } |
---|
121 | |
---|
122 | #endif |
---|
123 | |
---|
124 | |
---|