Gabriele Cosmo
268 lines
10 KiB
C++
268 lines
10 KiB
C++
// This code implementation is the intellectual property of
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// the GEANT4 collaboration.
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//
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// By copying, distributing or modifying the Program (or any work
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// based on the Program) you indicate your acceptance of this statement,
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// and all its terms.
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//
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// ------------------------------------------------------------
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// GEANT 4 class header file
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//
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// For information related to this code contact:
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// CERN, IT Division, ASD group
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// History: based on object model of
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// 2nd December 1995, G.Cosmo
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// ---------- G4hLowEnergyIonisation physics process -----
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// by Vladimir Ivanchenko, 14 July 1999
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// was made on the base of G4hIonisation class
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// developed by Laszlo Urban
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// ************************************************************
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// Class Description:
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// G4hLowEnergyIonisation class is the extention of the ionisation
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// process for the slow charged hadrons. The physics model is
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// described in CERN-OPEN-99-121. User have a possibility to define
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// a parametrisation table via its name.
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// Class Description - End
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// ************************************************************
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// 28 July 1999 V.Ivanchenko cleen up
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// 17 August 1999 G.Mancinelli implemented ICRU parametrization (protons)
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// 20 August 1999 G.Mancinelli implemented ICRU parametrization (alpha)
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// 31 August 1999 V.Ivanchenko update and cleen up
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// ------------------------------------------------------------
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#ifndef G4hLowEnergyIonisation_h
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#define G4hLowEnergyIonisation_h 1
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#include "G4ios.hh"
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#include "Randomize.hh"
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#include "G4hEnergyLoss.hh"
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#include "globals.hh"
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#include "G4Track.hh"
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#include "G4Step.hh"
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#include "G4Electron.hh"
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#include "G4PhysicsLogVector.hh"
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#include "G4PhysicsLinearVector.hh"
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class G4hLowEnergyIonisation : public G4hEnergyLoss
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{
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public: // Without description
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G4hLowEnergyIonisation(const G4String& processName = "hLowEIoni");
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~G4hLowEnergyIonisation();
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G4bool IsApplicable(const G4ParticleDefinition&);
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void SetPhysicsTableBining(G4double lowE, G4double highE, G4int nBins);
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void BuildPhysicsTable(const G4ParticleDefinition& aParticleType);
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void BuildLambdaTable(const G4ParticleDefinition& aParticleType);
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G4double GetMeanFreePath(
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const G4Track& track,
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G4double previousStepSize,
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G4ForceCondition* condition ) ;
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G4VParticleChange *PostStepDoIt(const G4Track& track,
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const G4Step& Step ) ;
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void BuildLossTable(const G4ParticleDefinition& aParticleType);
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void PrintInfoDefinition();
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protected:
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virtual G4double ComputeMicroscopicCrossSection(
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const G4ParticleDefinition& aParticleType,
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G4double KineticEnergy,
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G4double AtomicNumber);
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//--------------------------------------------------------start
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virtual G4double ComputeBarkasTerm(
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const G4Material* material,
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const G4double KinEnergy,
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const G4double PartMass);
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//Function to compute the Barkas term
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//---------------------------------------------------------end
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public: // With description
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void SetStoppingPowerTableName(const G4String& dedxTable);
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// This method defines the ionisation parametrisation method via its name
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void SetNuclearStoppingOn();
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// This method switch on calculation of the nuclear stopping power.
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void SetNuclearStoppingOff();
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// This method switch off calculation of the nuclear stopping power.
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void SetAntiProtonStoppingOn();
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// This method switch on calculation of the loss table for antiproton
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// using antiproron formulation (down to 100 keV).
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void SetAntiProtonStoppingOff();
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// This method switch off calculation of the loss table for antiproton
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// using antiproron formulation (down to 100 keV).
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G4double GetParametrisedLoss(const G4Material* material,
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const G4double KinEnergy,
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const G4double DeltaRayCutNow,
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const G4double PartMass,
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const G4double PartCharge);
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// This method returns parametrised energy loss.
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// NEW**** modified totake account of the Barkas correction
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G4double GetBetheBlochLoss(const G4Material* material, const G4double KinEnergy,
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const G4double DeltaRayCutNow);
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// This method returns energy loss calculated via Bethe-Bloch formula.
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G4double GetFreeElectronGasLoss(G4double paramA, G4double KinEnergy);
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// This method returns energy loss parametrised in the free electron gas model.
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G4double GetUrbanModel(const G4Element* element, G4double KinEnergy);
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// This method returns energy loss parametrised as in the hIonisation class.
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G4double GetDeltaRaysEnergy(const G4Material* material, const G4double KinEnergy,
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const G4double DeltaRayCutNow);
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// This method returns average energy loss due to delta-rays emission with
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// energy higher than the cut energy for given material.
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G4int MolecIsInICRU_R49p(const G4Material* material);
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// This method returns index of the material in the table of protons energy
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// loss in ICRU Report N49. If material is not in the table the method returns -1.
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G4int MolecIsInICRU_R49PowersHe(const G4Material* material);
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// This method returns index of the material in the table of He energy loss
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// in ICRU Report N49. If material is not in the table the method returns -1.
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G4double MolecIsInZiegler1988(const G4Material* material);
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// This method returns index of the material in the table of energy loss from
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// NIM B35 (1988) 215-228. If material is not in the table the method returns -1.
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G4double GetMolecICRU_R49Loss(const G4Material* material, const G4double KinEnergy,
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const G4double DeltaRayCutNow, const G4int molecIndex);
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// This method returns energy loss of protons in material from the table of ICRU
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// Report N49.
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G4double GetChemicalFactor(const G4double ExpStopPower125, const G4double KinEnergy,
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const G4double BraggStopPower125);
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// This method returns the value of "chemical factor" which allows to correct
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// energy losses calculated according to the Bragg's rule (NIM B35 (1988) 215-228).
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G4double GetStoppingPower1977H(G4int iz, G4double E);
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// This method returns protons electronic stopping power parametrised according to
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// H.H.Andersen & J.F.Ziegler, Hydrogen Stopping Powers and
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// Ranges in All Elements, Vol.3, Pergamon Press, 1977
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G4double GetStoppingPowerICRU_R49p(G4int iz, G4double E, G4String type);
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// This method returns protons electronic stopping power parametrised according to
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// ICRU Report N49, 1993.
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G4double GetStoppingPower1977He(G4int iz, G4double E);
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// This method returns He electronic stopping power parametrised according to
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// J.F.Ziegler, Helium Stopping Powers and
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// Ranges in All Elemental Matter, Vol.4, Pergamon Press, 1977
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G4double GetStoppingPowerICRU_R49He(G4int iz, G4double E);
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// This method returns He electronic stopping power parametrised according to
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// ICRU Report N49, 1993. J.F. Ziegler model.
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G4double GetStoppingPowerICRU_R49PowersHe(G4int iz, G4double E);
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// This method returns He electronic stopping power parametrised according to
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// J.F.Ziegler, Helium Stopping Powers and
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// Ranges in All Elemental Matter, Vol.4, Pergamon Press, 1977
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G4double GetStoppingPower1977n(G4double Z1, G4double Z2,
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G4double M1, G4double M2, G4double E);
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// This method returns nuclear stopping power parametrised according to
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// J.F.Ziegler, Helium Stopping Powers and
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// Ranges in All Elemental Matter, Vol.4, Pergamon Press, 1977
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G4double GetStoppingPower1985n(G4double Z1, G4double Z2,
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G4double M1, G4double M2, G4double E);
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// This method returns nuclear stopping power parametrised according to
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// J.F.Ziegler, J.P. Biersack, U. Littmark
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// The Stopping and Range of Ions in Matter,
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// Vol.1, Pergamon Press, 1985
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G4double GetStoppingPowerMoliere(G4double Z1, G4double Z2,
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G4double M1, G4double M2, G4double E);
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// This method returns nuclear stopping power parametrised according to
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// ICRU Report N49, 1993. Moliere model.
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G4double GetHeEffChargeSquare(const G4int iz, const G4double HeKinEnergy);
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// This method returns He effective charge square parametrised according to
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// J.F.Ziegler, J.P. Biersack, U. Littmark
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// The Stopping and Range of Ions in Matter,
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// Vol.1, Pergamon Press, 1985
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G4double GetIonEffChargeSquare(const G4Material* material, const G4double KinEnergy,
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const G4double IonCharge);
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// This method returns ion effective charge square parametrised according to
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// J.F.Ziegler, J.P. Biersack, U. Littmark
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// The Stopping and Range of Ions in Matter,
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// Vol.1, Pergamon Press, 1985
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private:
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// hide assignment operator
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G4hLowEnergyIonisation & operator=(const G4hLowEnergyIonisation &right);
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G4hLowEnergyIonisation(const G4hLowEnergyIonisation&);
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private:
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// private data members ...............................
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protected:
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// protected data members ...............................
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G4PhysicsTable* theMeanFreePathTable;
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// interval of parametrisation of electron stopping power
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G4double ParamLowEnergy;
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G4double ParamHighEnergy;
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// name of parametrisation table of electron stopping power
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G4String DEDXtable;
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// flag of parametrisation of nucleus stopping power
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G4bool nStopping;
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G4bool pbarStop;
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// constants needed for the energy loss calculation
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const G4double twoln10;
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const G4double Factor;
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const G4double bg2lim;
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const G4double taulim; // energy to start to switch off shell corrections
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G4double RateMass;
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G4double MassRatio;
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// particles , cuts in kinetic energy ........
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const G4Electron* theElectron;
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const G4Proton* theProton;
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const G4AntiProton* theAntiProton;
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const G4double* DeltaCutInKineticEnergy ;
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G4double DeltaCutInKineticEnergyNow ;
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G4double ProtonMassAMU;
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G4double HeMassAMU;
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G4double ZieglerFactor; // Factor to convert the Stopping Power
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// unit [ev/(10^15 atoms/cm^2]
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// into the Geant4 dE/dx unit
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};
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#include "G4hLowEnergyIonisation.icc"
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#endif
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