Gabriele Cosmo
181 lines
6.3 KiB
C++
181 lines
6.3 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: G4IeBremsstrahlung.hh,v 1.4 2000/04/25 14:33:00 maire Exp $
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// GEANT4 tag $Name: geant4-03-00 $
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//
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// $Id:
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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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// ------------ G4IeBremsstrahlung 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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// ------------------------------------------------------------
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// ************************************************************
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// It is the first implementation of the BREMSSTRAHLUNG
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// PROCESS. ( photons + continuous energy loss)
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// using an INTEGRAL APPROACH instead of the differential
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// one used in the standard implementation .
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// ************************************************************
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// by Laszlo Urban, 23 June 1998
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// ------------------------------------------------------------
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// 28/10/98: small changes, cleanup L.Urban
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#ifndef G4IeBremsstrahlung_h
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#define G4IeBremsstrahlung_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 "G4VIeEnergyLoss.hh"
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#include "G4EnergyLossTables.hh"
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#include "G4Track.hh"
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#include "G4Step.hh"
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#include "G4Gamma.hh"
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#include "G4Electron.hh"
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#include "G4Positron.hh"
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#include "G4OrderedTable.hh"
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#include "G4PhysicsTable.hh"
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#include "G4PhysicsLogVector.hh"
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class G4IeBremsstrahlung : public G4VIeEnergyLoss
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{
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public:
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G4IeBremsstrahlung(const G4String& processName = "IeBrems");
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~G4IeBremsstrahlung();
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G4bool IsApplicable(const G4ParticleDefinition&);
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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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void BuildLambdaTable(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 PostStepGetPhysicalInteractionLength( const G4Track& track,
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G4double previousStepSize,
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G4ForceCondition* condition);
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G4double GetNlambda(
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G4double KineticEnergy,G4Material* material);
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protected:
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inline G4double ComputeMeanFreePath(
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const G4ParticleDefinition* ParticleType,
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G4double KineticEnergy,
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const G4Material* aMaterial);
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void ComputePartialSumSigma( const G4ParticleDefinition* ParticleType,
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G4double KineticEnergy,
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const G4Material* aMaterial);
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virtual G4double ComputeMicroscopicCrossSection(
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const G4ParticleDefinition* ParticleType,
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G4double KineticEnergy,
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G4double AtomicNumber,
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G4double GammaEnergyCut);
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private:
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G4IeBremsstrahlung & operator=(const G4IeBremsstrahlung &right);
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G4IeBremsstrahlung(const G4IeBremsstrahlung&);
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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, G4double GammaEnergyCut);
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G4double ComputePositronCorrFactorSigma( G4double AtomicNumber,
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G4double KineticEnergy, G4double GammaEnergyCut);
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G4Element* SelectRandomAtom(G4Material* aMaterial) const;
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G4double ScreenFunction1(G4double ScreenVariable);
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G4double ScreenFunction2(G4double ScreenVariable);
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void BuildNlambdaTable(const G4ParticleDefinition& aParticleType) ;
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void BuildNlambdaVector(const G4ParticleDefinition& aParticleType,
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G4int materialIndex,
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G4PhysicsLogVector* nlambdaVector) ;
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void BuildInverseNlambdaTable(
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const G4ParticleDefinition& aParticleType) ;
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void InvertNlambdaVector(const G4ParticleDefinition& aParticleType,
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G4int materialIndex,
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G4PhysicsLogVector* nlambdaVector) ;
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void BuildCoeffATable(const G4ParticleDefinition& aParticleType) ;
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void BuildCoeffBTable(const G4ParticleDefinition& aParticleType) ;
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void BuildCoeffCTable(const G4ParticleDefinition& aParticleType) ;
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void TestOfInversion(const G4ParticleDefinition& aParticleType,
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G4int printflag) ;
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private:
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G4PhysicsTable* theMeanFreePathTable ;
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G4PhysicsTable* theNlambdaTable;
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G4PhysicsTable* theInverseNlambdaTable;
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G4PhysicsTable* theCoeffATable;
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G4PhysicsTable* theCoeffBTable;
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G4PhysicsTable* theCoeffCTable;
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G4OrderedTable PartialSumSigma;
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G4double LowestKineticEnergy;
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G4double HighestKineticEnergy;
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G4int TotBin;
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G4double RTable ;
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G4double CutInRange;
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const G4Gamma* theGamma;
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const G4Electron* theElectron;
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const G4Positron* thePositron;
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const G4double* GammaCutInKineticEnergy;
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G4double GammaCutInKineticEnergyNow;
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G4int NumberOfBuildPhysicsTableCalls ;
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};
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#include "G4IeBremsstrahlung.icc"
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#endif
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