//
// ********************************************************************
// * License and Disclaimer                                           *
// *                                                                  *
// * The  Geant4 software  is  copyright of the Copyright Holders  of *
// * the Geant4 Collaboration.  It is provided  under  the terms  and *
// * conditions of the Geant4 Software License,  included in the file *
// * LICENSE and available at  http://cern.ch/geant4/license .  These *
// * include a list of copyright holders.                             *
// *                                                                  *
// * Neither the authors of this software system, nor their employing *
// * institutes,nor the agencies providing financial support for this *
// * work  make  any representation or  warranty, express or implied, *
// * regarding  this  software system or assume any liability for its *
// * use.  Please see the license in the file  LICENSE  and URL above *
// * for the full disclaimer and the limitation of liability.         *
// *                                                                  *
// * This  code  implementation is the result of  the  scientific and *
// * technical work of the GEANT4 collaboration.                      *
// * By using,  copying,  modifying or  distributing the software (or *
// * any work based  on the software)  you  agree  to acknowledge its *
// * use  in  resulting  scientific  publications,  and indicate your *
// * acceptance of all terms of the Geant4 Software license.          *
// ********************************************************************
//
// $Id: G4AdjointComptonModel.hh,v 1.5 2009/11/20 10:31:20 ldesorgh Exp $
// GEANT4 tag $Name: geant4-09-03-cand-01 $
//
/////////////////////////////////////////////////////////////////////////////////
//      Class:		G4AdjointComptonModel
//	Author:       	L. Desorgher
// 	Organisation: 	SpaceIT GmbH
//	Contract:	ESA contract 21435/08/NL/AT
// 	Customer:     	ESA/ESTEC
/////////////////////////////////////////////////////////////////////////////////
//
// CHANGE HISTORY
// --------------
//      ChangeHistory: 
//	 	1 September 2007 creation by L. Desorgher 
//		11 November 2009 Implement the use of approximated diffCS as an alternative of CSMatrix. 		
//
//-------------------------------------------------------------
//	Documentation:
//		Model for the adjoint compton scattering.
//

#ifndef G4AdjointComptonModel_h
#define G4AdjointComptonModel_h 1


#include "globals.hh"
#include "G4VEmAdjointModel.hh"
#include "G4VEmProcess.hh"
class G4AdjointComptonModel: public G4VEmAdjointModel

{
public:

  G4AdjointComptonModel();
  ~G4AdjointComptonModel(); 
  
  
  virtual void SampleSecondaries(const G4Track& aTrack,
                                G4bool IsScatProjToProjCase,
				G4ParticleChange* fParticleChange);
  void RapidSampleSecondaries(const G4Track& aTrack,
                                G4bool IsScatProjToProjCase,
				G4ParticleChange* fParticleChange);
  
  virtual G4double DiffCrossSectionPerAtomPrimToScatPrim( 
                                      G4double kinEnergyProj,  // kinetic energy of the primary particle before the interaction 
                                      G4double kinEnergyScatProj, // kinetic energy of the primary particle after the interaction 
				      G4double Z, 
                                      G4double A = 0.); 
  virtual G4double DiffCrossSectionPerAtomPrimToSecond(
                                      G4double kinEnergyProj,  // kinetic energy of the primary particle before the interaction 
                                      G4double kinEnergyProd, // kinetic energy of the secondary particle 
				      G4double Z, 
                                      G4double A = 0.);
 
  virtual G4double GetSecondAdjEnergyMaxForScatProjToProjCase(G4double PrimAdjEnergy);
  virtual G4double GetSecondAdjEnergyMinForProdToProjCase(G4double PrimAdjEnergy);
  
  
  virtual G4double AdjointCrossSection(const G4MaterialCutsCouple* aCouple,
				             G4double primEnergy,
				             G4bool IsScatProjToProjCase);

  
  
  inline void SetDirectProcess(G4VEmProcess* aProcess){theDirectEMProcess = aProcess;};			      
  
private:
  G4VEmProcess* theDirectEMProcess;
  G4double G4direct_CS;
  
    
};

#endif
