| 1 | //
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| 2 | // ********************************************************************
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| 3 | // * License and Disclaimer *
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| 4 | // * *
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| 5 | // * The Geant4 software is copyright of the Copyright Holders of *
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| 6 | // * the Geant4 Collaboration. It is provided under the terms and *
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| 7 | // * conditions of the Geant4 Software License, included in the file *
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| 8 | // * LICENSE and available at http://cern.ch/geant4/license . These *
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| 9 | // * include a list of copyright holders. *
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| 10 | // * *
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| 11 | // * Neither the authors of this software system, nor their employing *
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| 12 | // * institutes,nor the agencies providing financial support for this *
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| 13 | // * work make any representation or warranty, express or implied, *
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| 14 | // * regarding this software system or assume any liability for its *
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| 15 | // * use. Please see the license in the file LICENSE and URL above *
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| 16 | // * for the full disclaimer and the limitation of liability. *
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| 17 | // * *
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| 18 | // * This code implementation is the result of the scientific and *
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| 19 | // * technical work of the GEANT4 collaboration. *
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| 20 | // * By using, copying, modifying or distributing the software (or *
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| 21 | // * any work based on the software) you agree to acknowledge its *
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| 22 | // * use in resulting scientific publications, and indicate your *
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| 23 | // * acceptance of all terms of the Geant4 Software license. *
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| 24 | // ********************************************************************
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| 25 | //
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| 26 | // $Id: G4MuMinusCaptureCascade.hh,v 1.10 2007/07/05 18:19:14 dennis Exp $
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| 27 | // GEANT4 tag $Name: geant4-09-03-cand-01 $
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| 28 | //
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| 29 | // G4MuMinusCaptureCascade physics process --------
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| 30 | // Vladimir Ivanchenko, April 2000
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| 31 | //
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| 32 | // Modified:
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| 33 | // 14.11.06 Add inline functions (V.Ivanchenko)
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| 34 | //
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| 35 | //-----------------------------------------------------------------------------
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| 36 |
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| 37 | #ifndef G4MuMinusCaptureCascade_h
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| 38 | #define G4MuMinusCaptureCascade_h 1
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| 39 |
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| 40 | #include "globals.hh"
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| 41 | #include "Randomize.hh"
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| 42 | #include "G4ParticleDefinition.hh"
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| 43 | #include "G4ThreeVector.hh"
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| 44 |
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| 45 | class G4GHEKinematicsVector;
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| 46 |
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| 47 | class G4MuMinusCaptureCascade
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| 48 | {
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| 49 | public:
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| 50 |
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| 51 | G4MuMinusCaptureCascade();
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| 52 |
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| 53 | ~G4MuMinusCaptureCascade();
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| 54 |
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| 55 | G4int DoCascade(const G4double Z, const G4double A,
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| 56 | G4GHEKinematicsVector* Cascade);
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| 57 |
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| 58 | void DoBoundMuonMinusDecay(G4double Z,
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| 59 | G4int* nCascade, G4GHEKinematicsVector* Cascade);
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| 60 |
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| 61 | G4double GetKShellEnergy(G4double Z);
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| 62 |
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| 63 | G4ThreeVector& GetRandomVec();
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| 64 |
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| 65 | private:
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| 66 |
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| 67 | G4double GetLinApprox(G4int N, const G4double* X, const G4double* Y,
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| 68 | G4double Xuser);
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| 69 |
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| 70 | void AddNewParticle(G4ParticleDefinition* aParticle,
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| 71 | G4ThreeVector& Momentum,
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| 72 | G4double mass,
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| 73 | G4int* nParticle,
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| 74 | G4GHEKinematicsVector* Cascade);
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| 75 |
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| 76 | // hide assignment operator as private
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| 77 | G4MuMinusCaptureCascade& operator=(const G4MuMinusCaptureCascade &right);
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| 78 | G4MuMinusCaptureCascade(const G4MuMinusCaptureCascade& );
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| 79 |
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| 80 | G4double Emass, MuMass;
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| 81 | G4ParticleDefinition* theElectron;
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| 82 | G4ParticleDefinition* theGamma;
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| 83 | G4ThreeVector randomVect;
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| 84 | };
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| 85 |
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| 86 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
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| 87 |
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| 88 | inline G4double G4MuMinusCaptureCascade::GetLinApprox(G4int N,
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| 89 | const G4double* X,
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| 90 | const G4double* Y,
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| 91 | G4double Xuser)
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| 92 | {
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| 93 | G4double Yuser;
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| 94 | if(Xuser <= X[0]) Yuser = Y[0];
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| 95 | else if(Xuser >= X[N-1]) Yuser = Y[N-1];
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| 96 | else {
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| 97 | G4int i;
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| 98 | for (i=1; i<N; i++){
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| 99 | if(Xuser <= X[i]) break;
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| 100 | }
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| 101 |
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| 102 | if(Xuser == X[i]) Yuser = Y[i];
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| 103 | else Yuser = Y[i-1] + (Y[i] - Y[i-1])*(Xuser - X[i-1])/(X[i] - X[i-1]);
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| 104 | }
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| 105 | return Yuser;
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| 106 | }
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| 107 |
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| 108 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
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| 109 |
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| 110 | inline G4ThreeVector& G4MuMinusCaptureCascade::GetRandomVec()
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| 111 | {
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| 112 | //
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| 113 | // generate uniform vector
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| 114 | //
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| 115 | G4double cost = 2.0 * G4UniformRand() - 1.0;
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| 116 | G4double sint = std::sqrt((1.0 - cost)*(1.0 + cost));
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| 117 | G4double Phi = twopi * G4UniformRand();
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| 118 | randomVect = G4ThreeVector(sint * std::cos(Phi), sint * std::sin(Phi), cost);
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| 119 | return randomVect;
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| 120 | }
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| 121 |
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| 122 | #endif
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| 123 |
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| 124 |
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