Gabriele Cosmo
125 lines
4.1 KiB
C++
125 lines
4.1 KiB
C++
//
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// ********************************************************************
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// * License and Disclaimer *
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// * *
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// * The Geant4 software is copyright of the Copyright Holders of *
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// * the Geant4 Collaboration. It is provided under the terms and *
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// * conditions of the Geant4 Software License, included in the file *
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// * LICENSE and available at http://cern.ch/geant4/license . These *
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// * include a list of copyright holders. *
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// * *
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// * Neither the authors of this software system, nor their employing *
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// * institutes,nor the agencies providing financial support for this *
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// * work make any representation or warranty, express or implied, *
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// * regarding this software system or assume any liability for its *
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// * use. Please see the license in the file LICENSE and URL above *
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// * for the full disclaimer and the limitation of liability. *
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// * *
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// * This code implementation is the result of the scientific and *
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// * technical work of the GEANT4 collaboration. *
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// * By using, copying, modifying or distributing the software (or *
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// * any work based on the software) you agree to acknowledge its *
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// * use in resulting scientific publications, and indicate your *
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// * acceptance of all terms of the Geant4 Software license. *
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// ********************************************************************
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//
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// $Id: G4MuMinusCaptureCascade.hh,v 1.10 2007/07/05 18:19:14 dennis Exp $
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// GEANT4 tag $Name: geant4-09-01 $
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//
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// G4MuMinusCaptureCascade physics process --------
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// Vladimir Ivanchenko, April 2000
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//
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// Modified:
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// 14.11.06 Add inline functions (V.Ivanchenko)
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//
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//-----------------------------------------------------------------------------
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#ifndef G4MuMinusCaptureCascade_h
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#define G4MuMinusCaptureCascade_h 1
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#include "globals.hh"
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#include "Randomize.hh"
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#include "G4ParticleDefinition.hh"
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#include "G4ThreeVector.hh"
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class G4GHEKinematicsVector;
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class G4MuMinusCaptureCascade
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{
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public:
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G4MuMinusCaptureCascade();
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~G4MuMinusCaptureCascade();
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G4int DoCascade(const G4double Z, const G4double A,
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G4GHEKinematicsVector* Cascade);
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void DoBoundMuonMinusDecay(G4double Z,
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G4int* nCascade, G4GHEKinematicsVector* Cascade);
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G4double GetKShellEnergy(G4double Z);
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G4ThreeVector& GetRandomVec();
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private:
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G4double GetLinApprox(G4int N, const G4double* X, const G4double* Y,
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G4double Xuser);
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void AddNewParticle(G4ParticleDefinition* aParticle,
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G4ThreeVector& Momentum,
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G4double mass,
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G4int* nParticle,
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G4GHEKinematicsVector* Cascade);
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// hide assignment operator as private
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G4MuMinusCaptureCascade& operator=(const G4MuMinusCaptureCascade &right);
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G4MuMinusCaptureCascade(const G4MuMinusCaptureCascade& );
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G4double Emass, MuMass;
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G4ParticleDefinition* theElectron;
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G4ParticleDefinition* theGamma;
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G4ThreeVector randomVect;
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};
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
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inline G4double G4MuMinusCaptureCascade::GetLinApprox(G4int N,
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const G4double* X,
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const G4double* Y,
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G4double Xuser)
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{
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G4double Yuser;
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if(Xuser <= X[0]) Yuser = Y[0];
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else if(Xuser >= X[N-1]) Yuser = Y[N-1];
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else {
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G4int i;
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for (i=1; i<N; i++){
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if(Xuser <= X[i]) break;
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}
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if(Xuser == X[i]) Yuser = Y[i];
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else Yuser = Y[i-1] + (Y[i] - Y[i-1])*(Xuser - X[i-1])/(X[i] - X[i-1]);
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}
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return Yuser;
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
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inline G4ThreeVector& G4MuMinusCaptureCascade::GetRandomVec()
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{
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//
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// generate uniform vector
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//
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G4double cost = 2.0 * G4UniformRand() - 1.0;
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G4double sint = std::sqrt((1.0 - cost)*(1.0 + cost));
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G4double Phi = twopi * G4UniformRand();
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randomVect = G4ThreeVector(sint * std::cos(Phi), sint * std::sin(Phi), cost);
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return randomVect;
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}
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#endif
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