Gabriele Cosmo
99 lines
3.7 KiB
C++
99 lines
3.7 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: G4VPolarizedCrossSection.hh,v 1.4 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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// File name: G4VPolarizedCrossSection
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//
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// Author: Andreas Schaelicke
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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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//
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// Class Description:
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// (pure virtual) interface class
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//
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// provides readable but efficient routines to determine
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// polarization for the final state of a given process
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// empoying the differential cross section
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//
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#ifndef G4VPolarizedCrossSection_h
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#define G4VPolarizedCrossSection_h 1
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#include "G4StokesVector.hh"
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class G4VPolarizedCrossSection
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{
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public:
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G4VPolarizedCrossSection();
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virtual ~G4VPolarizedCrossSection();
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public:
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virtual void Initialize(G4double, G4double, G4double,
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const G4StokesVector & p0,const G4StokesVector & p1,
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G4int flag=0);
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virtual G4double XSection(const G4StokesVector & pol2,const G4StokesVector & pol3) = 0;
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virtual G4double TotalXSection(G4double xmin, G4double xmax, G4double y,
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const G4StokesVector & pol0,
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const G4StokesVector & pol1);
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// return expected mean polarisation
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virtual G4StokesVector GetPol2();
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virtual G4StokesVector GetPol3();
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// return basic kinematics properties
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// minimal gamma value in TotalXSection
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inline G4double GetYmin() {return fYmin; }
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// minimal energy fraction in TotalXSection
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virtual G4double GetXmin(G4double y);
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// maximal energy fraction in TotalXSection
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virtual G4double GetXmax(G4double y);
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// return appropriate distribute polarisation states;
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// void DicePolarization();
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// G4StokesVector DicedPol2();
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// G4StokesVector DicedPol3();
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inline void SetMaterial(G4double A, G4double Z, G4double coul)
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{ theA=A; theZ=Z; fCoul=coul; }
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protected:
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// define kinematics properties
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inline void SetXmin(G4double xmin) { fXmin=xmin;}
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inline void SetXmax(G4double xmax) { fXmax=xmax;}
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inline void SetYmin(G4double ymin) { fYmin=ymin;}
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// kinematic properties
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G4double fXmin, fXmax, fYmin;
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// material properties
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G4double theA, theZ;
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G4double fCoul;
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};
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#endif
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