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0001 //
0002 // ********************************************************************
0003 // * License and Disclaimer                                           *
0004 // *                                                                  *
0005 // * The  Geant4 software  is  copyright of the Copyright Holders  of *
0006 // * the Geant4 Collaboration.  It is provided  under  the terms  and *
0007 // * conditions of the Geant4 Software License,  included in the file *
0008 // * LICENSE and available at  http://cern.ch/geant4/license .  These *
0009 // * include a list of copyright holders.                             *
0010 // *                                                                  *
0011 // * Neither the authors of this software system, nor their employing *
0012 // * institutes,nor the agencies providing financial support for this *
0013 // * work  make  any representation or  warranty, express or implied, *
0014 // * regarding  this  software system or assume any liability for its *
0015 // * use.  Please see the license in the file  LICENSE  and URL above *
0016 // * for the full disclaimer and the limitation of liability.         *
0017 // *                                                                  *
0018 // * This  code  implementation is the result of  the  scientific and *
0019 // * technical work of the GEANT4 collaboration.                      *
0020 // * By using,  copying,  modifying or  distributing the software (or *
0021 // * any work based  on the software)  you  agree  to acknowledge its *
0022 // * use  in  resulting  scientific  publications,  and indicate your *
0023 // * acceptance of all terms of the Geant4 Software license.          *
0024 // ********************************************************************
0025 //
0026 // Geant4 Class file
0027 //
0028 // File name:     G4PolarizedBremsstrahlungXS
0029 //
0030 // Author:        Karim Laihem and Andreas Schaelicke
0031 //
0032 // Class Description:
0033 //   determine the polarization of the final state
0034 //   in a bremsstrahlung scattering process employing the differential
0035 //   cross section by Olsen and Maximon
0036 
0037 #ifndef G4PolarizedBremsstrahlungXS_h
0038 #define G4PolarizedBremsstrahlungXS_h 1
0039 
0040 #include "globals.hh"
0041 #include "G4StokesVector.hh"
0042 #include "G4VPolarizedXS.hh"
0043 
0044 class G4PolarizedBremsstrahlungXS : public G4VPolarizedXS
0045 {
0046  public:
0047   G4PolarizedBremsstrahlungXS();
0048   ~G4PolarizedBremsstrahlungXS() override;
0049 
0050   void Initialize(G4double eps, G4double X, G4double phi,
0051                   const G4StokesVector& p0, const G4StokesVector& p1,
0052                   G4int flag = 0) override;
0053   G4double XSection(const G4StokesVector& pol2,
0054                     const G4StokesVector& pol3) override;
0055 
0056   // return expected mean polarisation
0057   G4StokesVector GetPol2() override;  // electron/positron
0058   G4StokesVector GetPol3() override;  // photon
0059 
0060   G4PolarizedBremsstrahlungXS& operator                           =(
0061     const G4PolarizedBremsstrahlungXS& right) = delete;
0062   G4PolarizedBremsstrahlungXS(const G4PolarizedBremsstrahlungXS&) = delete;
0063 
0064  private:
0065   static G4double SCRN[2][19];  // screening function lookup table
0066 
0067   G4StokesVector fFinalLeptonPolarization;
0068   G4StokesVector fFinalGammaPolarization;
0069 };
0070 
0071 #endif