G4MollerBhabhaModel.hh

Go to the documentation of this file.

//
// ********************************************************************
// * 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.          *
// ********************************************************************
//
//
// -------------------------------------------------------------------
//
// GEANT4 Class header file
//
//
// File name:     G4MollerBhabhaModel
//
// Author:        Vladimir Ivanchenko on base of Laszlo Urban code
//
// Creation date: 07.01.2002
//
// Modifications:
//
// 23-12-02 Change interface in order to move to cut per region (V.Ivanchenko)
// 24-01-03 Make models region aware (V.Ivanchenko)
// 13-02-03 Add name (V.Ivanchenko)
// 06-02-06 ComputeCrossSectionPerElectron, ComputeCrossSectionPerAtom (mma)
// 14-01-07 promote SetParticle() from private to protected (mma)
 
//
// Class Description:
//
// Implementation of energy loss process and delta-electrons production
// of electrons and positrons
 
// -------------------------------------------------------------------
//
 
#ifndef G4MollerBhabhaModel_h
#define G4MollerBhabhaModel_h 1
 
#include "G4VEmModel.hh"
 
class G4ParticleChangeForLoss;
 
class G4MollerBhabhaModel : public G4VEmModel
{
 
public:
 
  explicit G4MollerBhabhaModel(const G4ParticleDefinition* p = nullptr, 
                   const G4String& nam = "MollerBhabha");
 
  virtual ~G4MollerBhabhaModel();
 
  virtual void Initialise(const G4ParticleDefinition*, 
              const G4DataVector&) override;
 
  virtual G4double ComputeCrossSectionPerElectron(
                 const G4ParticleDefinition*,
                 G4double kineticEnergy,
                 G4double cutEnergy,
                 G4double maxEnergy);
                 
  virtual G4double ComputeCrossSectionPerAtom(
                 const G4ParticleDefinition*,
                 G4double kineticEnergy,
                 G4double Z, G4double A,
                 G4double cutEnergy,
                 G4double maxEnergy) override;
                                 
  virtual G4double CrossSectionPerVolume(const G4Material*,
                 const G4ParticleDefinition*,
                 G4double kineticEnergy,
                 G4double cutEnergy,
                 G4double maxEnergy) override;
                 
  virtual G4double ComputeDEDXPerVolume(const G4Material*,
                const G4ParticleDefinition*,
                G4double kineticEnergy,
                G4double cutEnergy) override;
 
  virtual void SampleSecondaries(std::vector<G4DynamicParticle*>*,
                 const G4MaterialCutsCouple*,
                 const G4DynamicParticle*,
                 G4double tmin,
                 G4double maxEnergy) override;
 
protected:
 
  virtual G4double MaxSecondaryEnergy(const G4ParticleDefinition*,
                      G4double kinEnergy) final;
                  
  inline void SetParticle(const G4ParticleDefinition* p);
 
  const G4ParticleDefinition* particle;
  G4ParticleDefinition*       theElectron;
  G4ParticleChangeForLoss*    fParticleChange;
 
  G4bool   isElectron;
  G4double twoln10;
  G4double lowLimit;
  
private:
 
  // hide assignment operator 
  G4MollerBhabhaModel & operator=(const  G4MollerBhabhaModel &right) = delete;
  G4MollerBhabhaModel(const  G4MollerBhabhaModel&) = delete;
 
  G4bool   isInitialised;
 
};
 
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
 
inline void G4MollerBhabhaModel::SetParticle(const G4ParticleDefinition* p)
{
  particle = p;
  if(p != theElectron) { isElectron = false; }
}
 
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
 
#endif