Gabriele Cosmo
139 lines
3.8 KiB
C++
139 lines
3.8 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: G4LowEnergyBremsstrahlung.hh,v 1.7.8.1 1999/12/07 20:50:19 gunter Exp $
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// GEANT4 tag $Name: geant4-01-00 $
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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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// For information related to this code contact:
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// CERN, IT Division, ASD group
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// History: first implementation, based on object model of
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// 2nd December 1995, G.Cosmo
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// ------------ G4LowEnergyBremsstrahlung physics process ------
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// by Michel Maire, 24 July 1996
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// ************************************************************
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// 1-10-96 : new type G4OrderedTable; ComputePartialSumSigma()
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// 20/03/97: new energy loss+ionisation+brems scheme, L.Urban
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// 01-09-98, new methods SetBining() and PrintInfo()
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// ------------------------------------------------------------
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#ifndef G4LowEnergyBremsstrahlung_h
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#define G4LowEnergyBremsstrahlung_h 1
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// Base Class Headers
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//#include "G4VDiscreteProcess.hh"
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#include "G4eEnergyLoss.hh"
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// Contained Variables Headers
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#include "G4LowEnergyUtilities.hh"
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#include "G4Electron.hh"
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#include "G4Positron.hh"
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class G4LowEnergyBremsstrahlung : public G4eEnergyLoss{
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public:
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G4LowEnergyBremsstrahlung(const G4String& processName = "LowEnBrem");
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~G4LowEnergyBremsstrahlung();
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G4bool IsApplicable(const G4ParticleDefinition&);
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void SetCutForLowEnSecPhotons(G4double);
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void SetPhysicsTableBining(G4double lowE, G4double highE, G4int nBins);
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void PrintInfoDefinition();
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void BuildPhysicsTable(const G4ParticleDefinition& ParticleType);
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void BuildLossTable(const G4ParticleDefinition& ParticleType);
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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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G4VParticleChange* PostStepDoIt(const G4Track& track,
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const G4Step& step);
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G4double GetLambda(G4double KineticEnergy,G4Material* material);
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protected:
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void BuildCrossSectionTable();
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void BuildMeanFreePathTable();
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void BuildATable();
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void BuildBTable();
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void BuildZVec();
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void ComputePartialSumSigma(G4double KineticEnergy,
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const G4Material* aMaterial);
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private:
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G4double ComputeA(G4int Z, G4double ElectKinEnergy); // interpolation
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G4double ComputeB(G4int Z, G4double ElectKinEnergy); // parametrized formula
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G4double ComputeBremLoss(G4double Z, G4double natom, G4double T,
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G4double Cut, G4double x);
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G4double ComputeXYPolynomial(G4double x,G4double y,G4int xSize,
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G4int ySize,const G4double coeff[]);
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G4double ComputePositronCorrFactorLoss(G4double AtomicNumber,
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G4double KineticEnergy,
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G4double GammaEnergyCut);
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G4Element* SelectRandomAtom(G4Material* aMaterial) const;
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G4LowEnergyBremsstrahlung & operator=(const G4LowEnergyBremsstrahlung &right);
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G4LowEnergyBremsstrahlung(const G4LowEnergyBremsstrahlung&);
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private:
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G4SecondLevel* theCrossSectionTable ;
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G4PhysicsTable* theMeanFreePathTable ;
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G4SecondLevel* ATable;
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G4FirstLevel* BTable;
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G4Data* ZNumVec;
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G4LowEnergyUtilities util;
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// partial sum of total crosssection
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G4OrderedTable PartialSumSigma;
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G4double LowestKineticEnergy;
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G4double HighestKineticEnergy;
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G4double lowEnergyCut; // lower limit of the energy sampling formula
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G4int TotBin; // number of bins in the tables
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G4double CutForLowEnergySecondaryPhotons;
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};
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#include "G4LowEnergyBremsstrahlung.icc"
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#endif
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