Gabriele Cosmo
159 lines
6.6 KiB
C++
159 lines
6.6 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: G4ComptonScattering.hh,v 1.9 2002/04/09 17:34:40 vnivanch Exp $
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// GEANT4 tag $Name: geant4-05-00 $
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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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// 03-08-01, new methods Store/Retrieve PhysicsTable (mma)
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// 06-08-01, BuildThePhysicsTable() called from constructor (mma)
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// 19-09-01, come back to previous ProcessName "compt"
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// 20-09-01, DoIt: fminimalEnergy = 1*eV (mma)
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// 01-10-01, come back to BuildPhysicsTable(const G4ParticleDefinition&)
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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&);
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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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G4bool StorePhysicsTable(G4ParticleDefinition* ,
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const G4String& directory, G4bool);
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// store CrossSection 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 CrossSection 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 BuildThePhysicsTable().
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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 tables
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G4double HighestEnergyLimit; // high energy limit of the tables
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G4int NumbBinTable; // number of bins in the tables
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protected:
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G4double fminimalEnergy; // minimalEnergy of produced particles
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};
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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#include "G4ComptonScattering.icc"
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#endif
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