Geant4 Cross Reference

Cross-Referencing   Geant4
Geant4/processes/electromagnetic/polarisation/include/G4PolarizedAnnihilationXS.hh

Version: [ ReleaseNotes ] [ 1.0 ] [ 1.1 ] [ 2.0 ] [ 3.0 ] [ 3.1 ] [ 3.2 ] [ 4.0 ] [ 4.0.p1 ] [ 4.0.p2 ] [ 4.1 ] [ 4.1.p1 ] [ 5.0 ] [ 5.0.p1 ] [ 5.1 ] [ 5.1.p1 ] [ 5.2 ] [ 5.2.p1 ] [ 5.2.p2 ] [ 6.0 ] [ 6.0.p1 ] [ 6.1 ] [ 6.2 ] [ 6.2.p1 ] [ 6.2.p2 ] [ 7.0 ] [ 7.0.p1 ] [ 7.1 ] [ 7.1.p1 ] [ 8.0 ] [ 8.0.p1 ] [ 8.1 ] [ 8.1.p1 ] [ 8.1.p2 ] [ 8.2 ] [ 8.2.p1 ] [ 8.3 ] [ 8.3.p1 ] [ 8.3.p2 ] [ 9.0 ] [ 9.0.p1 ] [ 9.0.p2 ] [ 9.1 ] [ 9.1.p1 ] [ 9.1.p2 ] [ 9.1.p3 ] [ 9.2 ] [ 9.2.p1 ] [ 9.2.p2 ] [ 9.2.p3 ] [ 9.2.p4 ] [ 9.3 ] [ 9.3.p1 ] [ 9.3.p2 ] [ 9.4 ] [ 9.4.p1 ] [ 9.4.p2 ] [ 9.4.p3 ] [ 9.4.p4 ] [ 9.5 ] [ 9.5.p1 ] [ 9.5.p2 ] [ 9.6 ] [ 9.6.p1 ] [ 9.6.p2 ] [ 9.6.p3 ] [ 9.6.p4 ] [ 10.0 ] [ 10.0.p1 ] [ 10.0.p2 ] [ 10.0.p3 ] [ 10.0.p4 ] [ 10.1 ] [ 10.1.p1 ] [ 10.1.p2 ] [ 10.1.p3 ] [ 10.2 ] [ 10.2.p1 ] [ 10.2.p2 ] [ 10.2.p3 ] [ 10.3 ] [ 10.3.p1 ] [ 10.3.p2 ] [ 10.3.p3 ] [ 10.4 ] [ 10.4.p1 ] [ 10.4.p2 ] [ 10.4.p3 ] [ 10.5 ] [ 10.5.p1 ] [ 10.6 ] [ 10.6.p1 ] [ 10.6.p2 ] [ 10.6.p3 ] [ 10.7 ] [ 10.7.p1 ] [ 10.7.p2 ] [ 10.7.p3 ] [ 10.7.p4 ] [ 11.0 ] [ 11.0.p1 ] [ 11.0.p2 ] [ 11.0.p3, ] [ 11.0.p4 ] [ 11.1 ] [ 11.1.1 ] [ 11.1.2 ] [ 11.1.3 ] [ 11.2 ] [ 11.2.1 ] [ 11.2.2 ] [ 11.3.0 ] 

  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 // -------------------------------------------------------------------
 27 //
 28 // Geant4 Class file
 29 //
 30 // File name:     G4PolarizedAnnihilationXS
 31 //
 32 // Author:        Andreas Schaelicke and Pavel Starovoitov
 33 //
 34 // Class Description:
 35 //   * calculates the differential cross section (ME squared,
 36 //     without phase space) incoming positron (along positive z direction)
 37 //     annihilations with an electron at rest
 38 //   * phi denotes the angle between the scattering plane and
 39 //     X axis of incoming partice reference frame (PRF)
 40 
 41 #ifndef G4PolarizedAnnihilationXS_h
 42 #define G4PolarizedAnnihilationXS_h 1
 43 
 44 #include "G4StokesVector.hh"
 45 #include "G4VPolarizedXS.hh"
 46 
 47 class G4PolarizedAnnihilationXS : public G4VPolarizedXS
 48 {
 49  public:
 50   G4PolarizedAnnihilationXS();
 51   virtual ~G4PolarizedAnnihilationXS() override;
 52 
 53   virtual void Initialize(G4double eps, G4double gamma, G4double phi,
 54                           const G4StokesVector& p0, const G4StokesVector& p1,
 55                           G4int flag = 0) override;
 56 
 57   G4double DiceEpsilon();
 58 
 59   virtual G4double XSection(const G4StokesVector& pol2,
 60                             const G4StokesVector& pol3) override;
 61 
 62   virtual G4double TotalXSection(G4double xmin, G4double xmax, G4double y,
 63                                  const G4StokesVector& pol0,
 64                                  const G4StokesVector& pol1) override;
 65 
 66   // return expected mean polarisation
 67   virtual G4StokesVector GetPol2() override;
 68   virtual G4StokesVector GetPol3() override;
 69 
 70   // minimal energy fraction in TotalXSection
 71   virtual G4double GetXmin(G4double y) override;
 72   // maximal energy fraction in TotalXSection
 73   virtual G4double GetXmax(G4double y) override;
 74 
 75   G4double getVar(G4int);
 76   // test routine
 77   void getCoeff();
 78 
 79   G4PolarizedAnnihilationXS& operator=(const G4PolarizedAnnihilationXS& right) =
 80     delete;
 81   G4PolarizedAnnihilationXS(const G4PolarizedAnnihilationXS&) = delete;
 82 
 83  private:
 84   void TotalXS();
 85   void DefineCoefficients(const G4StokesVector& pol0,
 86                           const G4StokesVector& pol1);
 87 
 88   static constexpr G4double re2 =
 89     CLHEP::classic_electr_radius * CLHEP::classic_electr_radius;
 90 
 91   // - part depending on the polarization of the final positron
 92   G4ThreeVector fPhi2;
 93 
 94   // - part depending on the polarization of the final electron
 95   G4ThreeVector fPhi3;
 96 
 97   G4double polxx, polyy, polzz, polxz, polzx, polxy, polyx, polyz, polzy;
 98 
 99   // - unpolarised + part depending on the polarization of the initial pair
100   G4double fPhi0;
101 
102   G4double fDice;
103   G4double fPolXS, fUnpXS;
104   G4double ISPxx, ISPyy, ISPzz, ISPnd;
105 };
106 #endif
107