G4BraggIonModel.hh

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//
// -------------------------------------------------------------------
//
// GEANT4 Class header file
//
//
// File name:     G4BraggIonModel
//
// Author:        Vladimir Ivanchenko
//
// Creation date: 13.10.2004
//
// Modifications:
// 09-11-04 Migration to new interface of Store/Retrieve tables (V.Ivantchenko)
// 11-05-05 Major optimisation of internal interfaces (V.Ivantchenko)
// 15-02-06 ComputeCrossSectionPerElectron, ComputeCrossSectionPerAtom (mma)
// 25-04-06 Add stopping data from ASTAR (V.Ivanchenko)
// 12-08-08 Added methods GetParticleCharge, GetChargeSquareRatio, 
//          CorrectionsAlongStep needed for ions(V.Ivanchenko)
 
//
// Class Description:
//
// Implementation of energy loss and delta-electron production
// by heavy slow charged particles using ICRU'49, NIST, and ICRU90 
// evaluated data for alpha and protons
 
// -------------------------------------------------------------------
//
 
#ifndef G4BraggIonModel_h
#define G4BraggIonModel_h 1
 
#include "G4VEmModel.hh"
#include "G4ASTARStopping.hh"
 
class G4ParticleChangeForLoss;
class G4EmCorrections;
class G4ICRU90StoppingData;
 
class G4BraggIonModel : public G4VEmModel
{
 
public:
 
  explicit G4BraggIonModel(const G4ParticleDefinition* p = nullptr,
               const G4String& nam = "BraggIon");
 
  ~G4BraggIonModel() 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;
 
  void SampleSecondaries(std::vector<G4DynamicParticle*>*,
             const G4MaterialCutsCouple*,
             const G4DynamicParticle*,
             G4double tmin,
             G4double maxEnergy) override;
 
  // Compute ion charge not applied to alpha
  G4double GetChargeSquareRatio(const G4ParticleDefinition*,
                const G4Material*,
                G4double kineticEnergy) override;
 
  G4double GetParticleCharge(const G4ParticleDefinition* p,
                 const G4Material* mat,
                 G4double kineticEnergy) override;
 
  // add correction to energy loss and ompute non-ionizing energy loss
  void CorrectionsAlongStep(const G4MaterialCutsCouple*,
                const G4DynamicParticle*,
                const G4double& length,
                G4double& eloss) override;
 
  // hide assignment operator
  G4BraggIonModel & operator=(const  G4BraggIonModel &right) = delete;
  G4BraggIonModel(const  G4BraggIonModel&) = delete;
 
protected:
 
  G4double MaxSecondaryEnergy(const G4ParticleDefinition*,
                  G4double kinEnergy) final;
 
private:
 
  void SetParticle(const G4ParticleDefinition* p);
 
  G4double HeEffChargeSquare(const G4double z, 
                             const G4double kinEnergyInMeV) const;
 
  G4int HasMaterial(const G4Material* material) const;
 
  G4double StoppingPower(const G4Material* material, 
                         const G4double kinEnergy) const;
 
  G4double ElectronicStoppingPower(const G4double z, 
                                   const G4double kinEnergy) const;
 
  G4double DEDX(const G4Material* material, const G4double kinEnergy);
 
  G4EmCorrections*            corr = nullptr;
  const G4ParticleDefinition* particle = nullptr;
  const G4ParticleDefinition* theElectron;
  G4ParticleChangeForLoss*    fParticleChange = nullptr;
  G4ICRU90StoppingData*       fICRU90 = nullptr;
 
  const G4Material* currentMaterial = nullptr;
  const G4Material* baseMaterial = nullptr;
 
  static G4ASTARStopping* fASTAR;
 
  G4double mass = 0.0;
  G4double spin = 0.0;
  G4double chargeSquare = 1.0;
  G4double effChargeSquare = 1.0;
  G4double massRate = 1.0;
  G4double ratio = 1.0;
  G4double HeMass;
  G4double massFactor;
  G4double rateMassHe2p;
  G4double theZieglerFactor;
  G4double lowestKinEnergy;
 
  G4int    iMolecula = -1; // index in the molecula's table
  G4int    iASTAR = -1;    // index in ASTAR
  G4int    iICRU90 = -1;
  G4bool   isIon = false;
  G4bool   isAlpha = false;
};
 
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#endif