G4BetheBlochModel.hh

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//
// -------------------------------------------------------------------
//
// GEANT4 Class header file
//
//
// File name:     G4BetheBlochModel
//
// Author:        Vladimir Ivanchenko on base of Laszlo Urban code
//
// Creation date: 03.01.2002
//
// Modifications:
//
// Modified by Michel Maire and Vladimir Ivanchenko
//
// Class Description:
//
// Implementation of Bethe-Bloch model of energy loss and
// delta-electron production by heavy charged particles
 
// -------------------------------------------------------------------
//
 
#ifndef G4BetheBlochModel_h
#define G4BetheBlochModel_h 1
 
#include "G4VEmModel.hh"
 
class G4EmCorrections;
class G4ParticleChangeForLoss;
class G4ICRU90StoppingData;
class G4NistManager;
 
class G4BetheBlochModel : public G4VEmModel
{
 
public:
 
  explicit G4BetheBlochModel(const G4ParticleDefinition* p = nullptr,
                 const G4String& nam = "BetheBloch");
 
  ~G4BetheBlochModel() override;
 
  void Initialise(const G4ParticleDefinition*, const G4DataVector&) override;
 
  G4double MinEnergyCut(const G4ParticleDefinition*,
            const G4MaterialCutsCouple* couple) override;
 
  virtual 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,
                const G4double& length,
                G4double& eloss) override;
 
  void SampleSecondaries(std::vector<G4DynamicParticle*>*,
             const G4MaterialCutsCouple*,
             const G4DynamicParticle*,
             G4double tmin,
             G4double maxEnergy) override;
 
  // hide assignment operator
  G4BetheBlochModel & operator=(const G4BetheBlochModel &right) = delete;
  G4BetheBlochModel(const G4BetheBlochModel&) = delete;
 
protected:
 
  G4double MaxSecondaryEnergy(const G4ParticleDefinition*,
                  G4double kinEnergy) override;
 
  inline G4double GetChargeSquareRatio() const;
 
  inline void SetChargeSquareRatio(G4double val);
 
private:
 
  void SetupParameters(const G4ParticleDefinition* p);
 
  const G4ParticleDefinition* particle = nullptr;
  const G4ParticleDefinition* theElectron;
  G4EmCorrections*            corr;
  G4ParticleChangeForLoss*    fParticleChange = nullptr;
  G4NistManager*              nist;
  G4ICRU90StoppingData*       fICRU90 = nullptr;
  const G4Material*           currentMaterial = nullptr;
  const G4Material*           baseMaterial = nullptr;
 
  G4double mass = 0.0;
  G4double tlimit = DBL_MAX;
  G4double spin = 0.0;
  G4double magMoment2 = 0.0;
  G4double chargeSquare = 1.0;
  G4double ratio = 1.0;
  G4double formfact = 0.0;
  G4double twoln10;
  G4double fAlphaTlimit;
  G4double fProtonTlimit;
 
  G4int    iICRU90 = -1;
  G4bool   isIon = false;
  G4bool   isAlpha = false;
};
 
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
 
inline G4double G4BetheBlochModel::GetChargeSquareRatio() const
{
  return chargeSquare;
}
 
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
 
inline void G4BetheBlochModel::SetChargeSquareRatio(G4double val)
{
  chargeSquare = val;
}
 
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
 
#endif