G4LindhardSorensenIonModel.hh

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// -------------------------------------------------------------------
//
// GEANT4 Class header file
//
//
// File name:     G4LindhardSorensenIonModel
//
// Author:        Alexander Bagulya & Vladimir Ivanchenko
//
// Creation date: 16.04.2018
//
//
// Class Description:
//
// Implementation of ion ionisation energy loss and delta-electron 
// production by heavy charged particles according to
// J. Lindhard & A.H. Sorensen, Phys. Rev. A 53 (1996) 2443-2455
 
// -------------------------------------------------------------------
//
 
#ifndef G4LindhardSorensenIonModel_h
#define G4LindhardSorensenIonModel_h 1
 
#include <CLHEP/Units/SystemOfUnits.h>
 
#include "G4VEmModel.hh"
#include "G4NistManager.hh"
#include "G4Threading.hh"
#include <vector>
 
class G4EmCorrections;
class G4ParticleChangeForLoss;
class G4LindhardSorensenData;
class G4BraggIonModel;
 
class G4LindhardSorensenIonModel : public G4VEmModel
{
public:
 
  explicit G4LindhardSorensenIonModel(const G4ParticleDefinition* p = nullptr,
                      const G4String& nam = "LindhardSorensen");
 
  ~G4LindhardSorensenIonModel() override;
 
  void Initialise(const G4ParticleDefinition*, const G4DataVector&) override;
 
  G4double MinEnergyCut(const G4ParticleDefinition*,
                        const G4MaterialCutsCouple* couple) override;
 
  G4double ComputeCrossSectionPerElectron(
                         const G4ParticleDefinition*,
                 G4double kineticEnergy,
                 G4double cutEnergy,
                 G4double maxEnergy);
                 
  G4double ComputeCrossSectionPerAtom(
                 const G4ParticleDefinition*,
                 G4double kineticEnergy,
                 G4double Z, G4double A,
                 G4double cutEnergy,
                 G4double maxEnergy) override;
                                 
  G4double CrossSectionPerVolume(const G4Material*,
                 const G4ParticleDefinition*,
                 G4double kineticEnergy,
                 G4double cutEnergy,
                 G4double maxEnergy) override;
                     
  G4double ComputeDEDXPerVolume(const G4Material*,
                                const G4ParticleDefinition*,
                                G4double kineticEnergy,
                                G4double cutEnergy) override;
 
  G4double GetChargeSquareRatio(const G4ParticleDefinition* p,
                                const G4Material* mat,
                                G4double kineticEnergy) override;
 
  G4double GetParticleCharge(const G4ParticleDefinition* p,
                 const G4Material* mat,
                             G4double kineticEnergy) override;
 
  void CorrectionsAlongStep(const G4MaterialCutsCouple* couple,
                            const G4DynamicParticle* dp,
                            G4double& eloss, G4double&,
                G4double length) override;
 
  void SampleSecondaries(std::vector<G4DynamicParticle*>*,
                         const G4MaterialCutsCouple*,
                 const G4DynamicParticle*,
             G4double tmin,
                     G4double maxEnergy) override;
 
  // hide assignment operator
  G4LindhardSorensenIonModel & operator=
  (const  G4LindhardSorensenIonModel &right) = delete;
  G4LindhardSorensenIonModel(const  G4LindhardSorensenIonModel&) = delete;
 
protected:
 
  G4double MaxSecondaryEnergy(const G4ParticleDefinition*,
                              G4double kinEnergy) override;
 
  inline G4double GetChargeSquareRatio() const;
 
  inline void SetChargeSquareRatio(G4double val);
 
private:
 
  void SetupParameters();
 
  void InitialiseLS();
 
  G4double ComputeDEDXPerVolumeLS(const G4Material*,
                                  const G4ParticleDefinition*,
                  G4double kinEnergy, G4double cutEnergy);
 
  inline void SetParticle(const G4ParticleDefinition* p);
 
  static const G4int MAXZION = 93;
 
  static G4LindhardSorensenData* lsdata;
  static std::vector<G4float>*   fact[MAXZION];
 
  const G4ParticleDefinition* particle;
  G4ParticleDefinition*       theElectron;
  G4EmCorrections*            corr;
  G4ParticleChangeForLoss*    fParticleChange;
  G4NistManager*              nist;
  G4BraggIonModel*            fBraggIonModel;
 
  G4int Zin;
  G4double mass;
  G4double tlimit;
  G4double spin;
  G4double magMoment2;
  G4double chargeSquare;
  G4double charge;
  G4double ratio;
  G4double formfact;
  G4double twoln10;
 
#ifdef G4MULTITHREADED
  static G4Mutex theLSMutex;
#endif
 
};
 
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
 
inline void 
G4LindhardSorensenIonModel::SetParticle(const G4ParticleDefinition* p)
{
  if(particle != p) {
    particle = p;
    SetupParameters();
  }
}
 
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
 
inline G4double G4LindhardSorensenIonModel::GetChargeSquareRatio() const
{
  return chargeSquare;
}
 
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
 
inline void G4LindhardSorensenIonModel::SetChargeSquareRatio(G4double val)
{
  chargeSquare = val;
}
 
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
 
#endif