Gabriele Cosmo
170 lines
6.9 KiB
C++
170 lines
6.9 KiB
C++
//
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// ********************************************************************
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// * DISCLAIMER *
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// * *
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// * The following disclaimer summarizes all the specific disclaimers *
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// * of contributors to this software. The specific disclaimers,which *
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// * govern, are listed with their locations in: *
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// * http://cern.ch/geant4/license *
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// * *
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// * Neither the authors of this software system, nor their employing *
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// * institutes,nor the agencies providing financial support for this *
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// * work make any representation or warranty, express or implied, *
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// * regarding this software system or assume any liability for its *
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// * use. *
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// * *
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// * This code implementation is the intellectual property of the *
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// * GEANT4 collaboration. *
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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 *
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// * statement, and all its terms. *
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// ********************************************************************
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//
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//
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// $Id: G4eIonisation.hh,v 1.16 2002/04/09 17:34:41 vnivanch Exp $
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// GEANT4 tag $Name: geant4-05-00 $
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//
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//--------------- G4eIonisation physics process --------------------------------
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// by Laszlo Urban, 20 March 1997
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//
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// 10-02-00 modifications , new e.m. structure, L.Urban
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// 03-08-01 new methods Store/Retrieve PhysicsTable (mma)
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// 13-08-01 new function ComputeRestrictedMeandEdx() (mma)
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// 19-09-01 come back to previous ProcessName "eIoni"
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// 29-10-01 all static functions no more inlined (mma)
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//
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//------------------------------------------------------------------------------
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// Class description
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//
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// This class manages the ionisation process for e-/e+
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// it inherites from G4VContinuousDiscreteProcess via G4VeEnergyLoss.
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//
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// Class description - end
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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#ifndef G4eIonisation_h
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#define G4eIonisation_h 1
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#include "G4VeEnergyLoss.hh"
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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class G4eIonisation : public G4VeEnergyLoss
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{
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public: // with description
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G4eIonisation(const G4String& processName = "eIoni");
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~G4eIonisation();
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G4bool IsApplicable(const G4ParticleDefinition&);
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// return true for e+/e-, false otherwise
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void BuildPhysicsTable(const G4ParticleDefinition& aParticleType);
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// this function overloads a virtual function of the base class.
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// It is invoked by the G4ParticleWithCuts::SetCut() method.
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// It invokes BuildLambdaTable(), BuildLossTable(), BuildDEDXTable()
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void BuildLossTable(const G4ParticleDefinition& aParticleType);
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// build the dE/dx tables due to the ionisation, for every materials.
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// (restricted stopping power, Berger-Seltzer formula)
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void BuildLambdaTable(const G4ParticleDefinition& aParticleType);
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// build mean free path tables for the delta rays production.
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// the tables are built for every materials.
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G4bool StorePhysicsTable(G4ParticleDefinition* ,
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const G4String& directory, G4bool);
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// store eLoss and MeanFreePath tables into an external file
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// specified by 'directory' (must exist before invokation)
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G4bool RetrievePhysicsTable(G4ParticleDefinition* ,
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const G4String& directory, G4bool);
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// retrieve eLoss and MeanFreePath tables from an external file
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// specified by 'directory'
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void PrintInfoDefinition();
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// Print few lines of informations about the process: validity range,
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// origine ..etc..
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// Invoked by BuildPhysicsTable().
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G4double GetMeanFreePath(const G4Track& track,
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G4double previousStepSize,
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G4ForceCondition* condition );
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// It returns the MeanFreePath of the process for the current track :
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// (energy, material)
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// The previousStepSize and G4ForceCondition* are not used.
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// This function overloads a virtual function of the base class.
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// It is invoked by the ProcessManager of the Particle.
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G4VParticleChange *PostStepDoIt(const G4Track& track,
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const G4Step& Step );
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// It computes the final state of the process (at end of step),
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// returned as a ParticleChange object.
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// This function overloads a virtual function of the base class.
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// It is invoked by the ProcessManager of the Particle.
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G4double GetLambda(G4double KineticEnergy, G4Material* material);
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// It returns the MeanFreePath of the process for a (energy, material)
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protected: // with description
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virtual G4double ComputeRestrictedMeandEdx(
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const G4ParticleDefinition& aParticleType,
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G4double KineticEnergy,
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const G4Material* material,
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G4double DeltaThreshold);
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// computes restricted mean dE/dx in Geant4 internal units.
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virtual G4double ComputeCrossSectionPerAtom(
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const G4ParticleDefinition& aParticleType,
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G4double KineticEnergy,
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G4double AtomicNumber,
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G4double DeltaThreshold);
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// computes total cross section per atom in Geant4 internal units.
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protected:
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G4PhysicsTable* theMeanFreePathTable;
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private:
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// hide assignment operator
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G4eIonisation & operator=(const G4eIonisation &right);
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G4eIonisation(const G4eIonisation&);
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private:
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static G4double LowerBoundLambda; // binning for mean free path table
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static G4double UpperBoundLambda;
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static G4int NbinLambda;
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G4double LowestKineticEnergy; // binning for dE/dx table
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G4double HighestKineticEnergy;
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G4int TotBin;
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public: // with description
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static void SetLowerBoundLambda(G4double val);
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static void SetUpperBoundLambda(G4double val);
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static void SetNbinLambda(G4int n);
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// set the parameters of the mean free path table.
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static G4double GetLowerBoundLambda();
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static G4double GetUpperBoundLambda();
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static G4int GetNbinLambda();
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// get the parameters of the mean free path table.
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};
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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#include "G4eIonisation.icc"
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#endif
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