Gabriele Cosmo
124 lines
4.7 KiB
C++
124 lines
4.7 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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// $Id: G4ComptonScattering.hh,v 1.4 1999/12/17 16:20:49 maire Exp $
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// GEANT4 tag $Name: geant4-03-00 $
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//
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// ------------ G4ComptonScattering physics process ------
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// by Michel Maire, April 1996
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//
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// 10-06-96, updated by M.Maire
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// 21-06-96, SetCuts implementation, M.Maire
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// 06-01-97, crossection table + meanfreepath table, M.Maire
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// 17-02-97, New Physics scheme
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// 25-02-97, GetMeanFreePath() now is public function
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// 12-03-97, new physics scheme again
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// 13-08-98, new methods SetBining() PrintInfo()
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// ------------------------------------------------------------
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// class description
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//
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// inherit from G4VDiscreteProcess
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//
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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#ifndef G4ComptonScattering_h
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#define G4ComptonScattering_h 1
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#include "G4ios.hh"
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#include "globals.hh"
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#include "Randomize.hh"
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#include "G4VDiscreteProcess.hh"
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#include "G4PhysicsTable.hh"
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#include "G4PhysicsLogVector.hh"
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#include "G4Element.hh"
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#include "G4Gamma.hh"
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#include "G4Electron.hh"
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#include "G4Step.hh"
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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class G4ComptonScattering : public G4VDiscreteProcess
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{
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public: // with description
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G4ComptonScattering(const G4String& processName ="compt");
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~G4ComptonScattering();
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G4bool IsApplicable(const G4ParticleDefinition&);
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// true for Gamma only.
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void SetPhysicsTableBining(G4double lowE, G4double highE, G4int nBins);
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// Allows to define the binning of the PhysicsTables,
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// before to build them.
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void BuildPhysicsTable(const G4ParticleDefinition& GammaType);
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// It builds the total CrossSectionPerAtom table, for Gamma,
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// and for every element contained in the elementTable.
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// It builds the MeanFreePath table, for Gamma,
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// and for every material contained in the materialTable.
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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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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& aTrack,
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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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G4double GetMicroscopicCrossSection(G4DynamicParticle* aDynamicGamma,
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G4Element* anElement);
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// It returns the total CrossSectionPerAtom of the process,
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// for the current DynamicGamma (energy), in anElement.
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G4VParticleChange* PostStepDoIt(const G4Track& aTrack,
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const G4Step& aStep);
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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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protected:
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virtual G4double ComputeCrossSectionPerAtom(G4double GammaEnergy,
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G4double AtomicNumber);
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virtual G4double ComputeMeanFreePath(G4double GammaEnergy,
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G4Material* aMaterial);
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private:
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// hide assignment operator as private
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G4ComptonScattering& operator=(const G4ComptonScattering &right);
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G4ComptonScattering(const G4ComptonScattering& );
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private:
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G4PhysicsTable* theCrossSectionTable; // table for crosssection
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G4PhysicsTable* theMeanFreePathTable; // table for mean free path
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G4double LowestEnergyLimit ; // low energy limit of the crossection formula
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G4double HighestEnergyLimit ; // high energy limit of the crossection formula
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G4int NumbBinTable ; // number of bins in the crossection table
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};
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#include "G4ComptonScattering.icc"
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#endif
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