source: trunk/source/processes/electromagnetic/lowenergy/include/G4PenelopeIonisationModel.hh @ 1064

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// $Id: G4PenelopeIonisationModel.hh,v 1.1 2008/12/04 14:12:09 pandola Exp $
// GEANT4 tag $Name: geant4-09-03-beta-cand-00 $
//
// Author: Luciano Pandola
//
// History:
// -----------
// 26 Nov 2008   L. Pandola   1st implementation. Migration from EM process 
//                            to EM model. Physics is unchanged.
//
// -------------------------------------------------------------------
//
// Class description:
// Low Energy Electromagnetic Physics, e+ and e- ionisation
// with Penelope Model
// -------------------------------------------------------------------

#ifndef G4PENELOPEIONISATIONMODEL_HH
#define G4PENELOPEIONISATIONMODEL_HH 1

#include "globals.hh"
#include "G4VEmModel.hh"
#include "G4DataVector.hh"
#include "G4ParticleChangeForLoss.hh"
#include "G4VCrossSectionHandler.hh"
#include "G4PhysicsLogVector.hh"
#include "G4AtomicDeexcitation.hh"

class G4ParticleDefinition;
class G4DynamicParticle;
class G4MaterialCutsCouple;
class G4Material;
class G4VEMDataSet;

class G4PenelopeIonisationModel : public G4VEmModel 
{

public:
  
  G4PenelopeIonisationModel(const G4ParticleDefinition* p=0,
                         const G4String& processName ="PenelopeIoni");
  
  virtual ~G4PenelopeIonisationModel();

  virtual void Initialise(const G4ParticleDefinition*, const G4DataVector&);

  virtual G4double CrossSectionPerVolume(const G4Material* material,
                                         const G4ParticleDefinition* theParticle,
                                         G4double kineticEnergy,
                                         G4double cutEnergy,
                                         G4double maxEnergy = DBL_MAX);
                                         
  virtual void SampleSecondaries(std::vector<G4DynamicParticle*>*,
                                 const G4MaterialCutsCouple*,
                                 const G4DynamicParticle*,
                                 G4double tmin,
                                 G4double maxEnergy);
                                   
  virtual G4double ComputeDEDXPerVolume(const G4Material*,
                               const G4ParticleDefinition*,
                               G4double kineticEnergy,
                               G4double cutEnergy);
                                 

  void SetUseAtomicDeexcitation(G4bool value){fUseAtomicDeexcitation = value;};          
  G4bool GetUseAtomicDeexcitation(){return fUseAtomicDeexcitation;};

  void SetVerbosityLevel(G4int lev){verboseLevel = lev;};
  G4int GetVerbosityLevel(){return verboseLevel;};


protected:
  G4ParticleChangeForLoss* fParticleChange;

private:
 
  G4PenelopeIonisationModel & operator=(const G4PenelopeIonisationModel &right);
  G4PenelopeIonisationModel(const G4PenelopeIonisationModel&);

 
  //Intrinsic energy limits of the model: cannot be extended by the parent process
  G4double fIntrinsicLowEnergyLimit;
  G4double fIntrinsicHighEnergyLimit;

  G4bool fUseAtomicDeexcitation;

  G4int verboseLevel;

  G4bool isInitialised;
 
  G4double CalculateDeltaFermi(G4double kinEnergy ,G4int Z,
                               G4double electronVolumeDensity);
        
  //Methods and variables to calculate final state
  void CalculateDiscreteForElectrons(G4double kinEnergy,G4double cutoffEnergy,
                                     G4int Z,G4double electronVolumeDensity);
  void CalculateDiscreteForPositrons(G4double kinEnergy,G4double cutoffEnergy,
                                     G4int Z,G4double electronVolumeDensity);

  G4AtomicDeexcitation deexcitationManager;
  G4double kineticEnergy1;
  G4double cosThetaPrimary;
  G4double energySecondary;
  G4double cosThetaSecondary;
  G4int iOsc;                              

  //These methods are used to calculate the hard-cross section (namely they 
  //return the hard/total cross section)
  G4double CalculateCrossSectionsRatio(G4double kinEnergy,
                                       G4double cutoffEnergy,
                                       G4int Z, 
                                       G4double electronVolumeDensity,
                                       const G4ParticleDefinition*);
  //In fact the total cross section (hard+soft) is read from file
  //The following methods give the cross section contribution (hard and soft) from each 
  //individual oscillator
  std::pair<G4double,G4double> CrossSectionsRatioForElectrons(G4double kineticEnergy,
                                                              G4double resEnergy,
                                                              G4double densityCorrection,
                                                              G4double cutoffEnergy);

  std::pair<G4double,G4double> CrossSectionsRatioForPositrons(G4double kineticEnergy,
                                                              G4double resEnergy,
                                                              G4double densityCorrection,
                                                              G4double cutoffEnergy);
  
  G4VCrossSectionHandler* crossSectionHandler;
  
  //These methods are used to calculate the stopping power up to the cutoff
  //for each individual oscillator
  G4double ComputeStoppingPowerForElectrons(G4double kinEnergy,
                                            G4double cutEnergy,
                                            G4double deltaFermi,
                                            G4double resEnergy);

  G4double ComputeStoppingPowerForPositrons(G4double kinEnergy,
                                            G4double cutEnergy,
                                            G4double deltaFermi,
                                            G4double resEnergy);
  
  
  //Parameters of atomic shells
  void ReadData();
  std::map<G4int,G4DataVector*> *ionizationEnergy;
  std::map<G4int,G4DataVector*> *resonanceEnergy;
  std::map<G4int,G4DataVector*> *occupationNumber;
  std::map<G4int,G4DataVector*> *shellFlag;
  
  //Mean free path table. This will become obsolete! For now I need something to store 
  //cross sections and to sample a random atom
  std::vector<G4VEMDataSet*>* theXSTable;
  std::vector<G4VEMDataSet*>* BuildCrossSectionTable(const G4ParticleDefinition*);
  G4int SampleRandomAtom(const G4MaterialCutsCouple*,G4double energy) const;

};

#endif