Gabriele Cosmo
79 lines
3.3 KiB
C++
79 lines
3.3 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: G4PolarizedMollerCrossSection.hh,v 1.3 2006/12/13 15:44:36 gunter 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: G4PolarizedMollerCrossSection
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//
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// Author: Andreas Schaelicke
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//
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// Creation date: 12.01.2006
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//
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// Modifications:
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// 16-01-06 included cross section as calculated by P.Starovoitov
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//
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// Class Description:
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// * calculates the differential cross section
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// incomming electron (along positive z direction) scatters at an electron at rest
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// * phi denotes the angle between the scattering plane (defined by the
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// outgoing electron) and X-axis
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// * all stokes vectors refer to spins in the Global System (X,Y,Z)
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//
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#ifndef G4PolarizedMollerCrossSection_h
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#define G4PolarizedMollerCrossSection_h 1
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#include "G4StokesVector.hh"
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#include "G4VPolarizedCrossSection.hh"
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class G4PolarizedMollerCrossSection : public G4VPolarizedCrossSection
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{
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public:
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G4PolarizedMollerCrossSection();
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virtual ~G4PolarizedMollerCrossSection();
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public:
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void Initialize(G4double x, G4double y, G4double phi,
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const G4StokesVector & p0,const G4StokesVector & p1,
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G4int flag=0);
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G4double XSection(const G4StokesVector & pol2,const G4StokesVector & pol3);
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G4double TotalXSection(G4double xmin, G4double xmax, G4double y,
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const G4StokesVector & pol0,const G4StokesVector & pol1);
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// return expected mean polarisation
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G4StokesVector GetPol2();
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G4StokesVector GetPol3();
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private:
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G4double phi0;
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// - part depending on the polarization of the final electron P1
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G4ThreeVector phi2;
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// - part depending on the polarization of the final electron P2
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G4ThreeVector phi3;
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};
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#endif
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