Gabriele Cosmo
80 lines
3.1 KiB
C++
80 lines
3.1 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: G4PolarizedPairProductionCrossSection.hh,v 1.3 2007/11/01 17:32:34 schaelic Exp $
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// GEANT4 tag $Name: geant4-09-01 $
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//
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// GEANT4 Class file
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//
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//
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// File name: G4PolarizedPairProductionCrossSection
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//
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// Author: Karim Laihem
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//
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// Creation date: 15.05.2005
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//
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// Modifications:
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// 20-08-06 updated interface to geant4.8.1 (A.Schaelicke)
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// 15-10-07 introduced a more general framework for cross sections (AS)
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//
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// Class Description:
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// determine the polarization of the final state
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// in a Bremsstrahlung scattering process employing the differential
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// cross section by Olsen and Maximon
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//
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#ifndef G4PolarizedPairProductionCrossSection_h
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#define G4PolarizedPairProductionCrossSection_h 1
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#include "G4StokesVector.hh"
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#include "G4VPolarizedCrossSection.hh"
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class G4PolarizedPairProductionCrossSection : public G4VPolarizedCrossSection
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{
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public:
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G4PolarizedPairProductionCrossSection();
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virtual void Initialize(G4double eps, G4double X, G4double phi,
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const G4StokesVector & p0,
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const G4StokesVector & p1,
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G4int flag=0);
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virtual G4double XSection(const G4StokesVector & pol2,
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const G4StokesVector & pol3);
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// return expected mean polarisation
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G4StokesVector GetPol2(); // electron/positron
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G4StokesVector GetPol3(); // photon
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private:
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G4StokesVector theFinalElectronPolarization;
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G4StokesVector theFinalPositronPolarization;
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void InitializeMe();
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static G4bool scrnInitialized;
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static G4double SCRN [3][20]; // screening function lookup table;
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};
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#endif
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