Gabriele Cosmo
146 lines
4.4 KiB
C++
146 lines
4.4 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: G4LowEnergyPhotoElectric.hh,v 1.18.2.2 2001/06/28 20:19:24 gunter Exp $
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// GEANT4 tag $Name: $
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//
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//
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// ------------------------------------------------------------
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// GEANT 4 class header file
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// CERN Geneva Switzerland
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//
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// ------------ G4LowEnergyPhotoElectric physics process ------
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// by A.Forti 1999/03/02
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//
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// Class description:
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// Low Energy Electromagnetic process, Photoelectric effect
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// Further documentation available from http://www.ge.infn.it/geant4/lowE
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// ************************************************************
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#ifndef G4LowEnergyPhotoElectric_h
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#define G4LowEnergyPhotoElectric_h 1
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// Base Class Headers
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#include "G4VDiscreteProcess.hh"
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// Contained Variables Headers
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#include "G4LowEnergyUtilities.hh"
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#include "G4Gamma.hh"
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// ..
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typedef G4FirstLevel oneShellTable;
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typedef G4SecondLevel oneAtomTable;
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typedef G4ThirdLevel allAtomTable;
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// ..
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class G4LowEnergyPhotoElectric : public G4VDiscreteProcess
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{
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public:
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G4LowEnergyPhotoElectric(const G4String& processName ="LowEnPhotoElec");
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~G4LowEnergyPhotoElectric();
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G4bool IsApplicable(const G4ParticleDefinition&);
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void SetCutForLowEnSecPhotons(G4double);
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// void SetCutForLowEnSecElectrons(G4double);
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void BuildPhysicsTable(const G4ParticleDefinition& PhotonType);
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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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G4double GetCrossSection(G4DynamicParticle* aDynamicGamma,
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G4Element* anElement);
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inline G4double GetTransitionShell(G4int k){return(thePrimShVec[k]);};
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G4VParticleChange* PostStepDoIt(const G4Track& aTrack, const G4Step& aStep);
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protected:
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virtual G4double ComputeCrossSection(const G4double AtomicNumber,
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const G4double IncEnergy);
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void BuildCrossSectionTable();
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void BuildShellCrossSectionTable();
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void BuildBindingEnergyTable();
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void BuildFluorTransitionTable();
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void BuildMeanFreePathTable();
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void BuildZVec();
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private:
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G4int SelectRandomShell(const G4int AtomIndex, const G4double IncEnergy);
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G4Element* SelectRandomAtom(const G4DynamicParticle* aDynamicPhoton,
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G4Material* aMaterial);
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G4bool SelectRandomTransition(G4int, G4double*, const oneAtomTable*);
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private:
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// hide assignment operator as private
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G4LowEnergyPhotoElectric& operator=(const G4LowEnergyPhotoElectric &right);
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G4LowEnergyPhotoElectric(const G4LowEnergyPhotoElectric& );
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private:
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G4double lowestEnergyLimit;
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G4double highestEnergyLimit;
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G4int NumbBinTable;
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G4double CutForLowEnergySecondaryPhotons;
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G4SecondLevel* theCrossSectionTable;
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G4PhysicsTable* theMeanFreePathTable;
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allAtomTable* allAtomShellCrossSec;
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allAtomTable* theFluorTransitionTable;
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G4SecondLevel* theBindingEnergyTable;
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G4DataVector* ZNumVec;
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G4DataVector* ZNumVecFluor;
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G4DataVector thePrimShVec;
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G4LowEnergyUtilities util;
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G4double MeanFreePath;
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};
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// ..
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#include "G4LowEnergyPhotoElectric.icc"
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#endif
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