Gabriele Cosmo
254 lines
8.9 KiB
C++
254 lines
8.9 KiB
C++
//
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// ********************************************************************
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// * License and Disclaimer *
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// * *
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// * The Geant4 software is copyright of the Copyright Holders of *
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// * the Geant4 Collaboration. It is provided under the terms and *
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// * conditions of the Geant4 Software License, included in the file *
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// * LICENSE and available at http://cern.ch/geant4/license . These *
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// * include a list of copyright holders. *
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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. Please see the license in the file LICENSE and URL above *
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// * for the full disclaimer and the limitation of liability. *
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// * *
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// * This code implementation is the result of the scientific and *
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// * technical work of the GEANT4 collaboration. *
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// * By using, copying, modifying or distributing the software (or *
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// * any work based on the software) you agree to acknowledge its *
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// * use in resulting scientific publications, and indicate your *
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// * acceptance of all terms of the Geant4 Software license. *
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// ********************************************************************
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//
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//
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// class description
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//
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// The class contains few (physical) quantities related to the Ionisation
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// process, for a material defined by its pointer G4Material*
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//
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... ....oooOO0OOooo....
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// 09-07-98: data moved from G4Material (mma)
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// 09-03-01: copy constructor and assignement operator in public (mma)
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// 28-10-02: add setMeanExcitationEnergy (V.Ivanchenko)
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// 27-09-07: add computation of parameters for ions (V.Ivanchenko)
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// 04-03-08: add fBirks constant (mma)
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// 16-01-19, add exact computation of the density effect (M. Strait)
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... ....oooOO0OOooo....
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#ifndef G4IonisParamMat_HH
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#define G4IonisParamMat_HH
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#include "G4ios.hh"
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#include "globals.hh"
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#include "G4Log.hh"
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#include "G4Exp.hh"
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#include "G4Threading.hh"
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class G4Material;
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class G4DensityEffectData;
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class G4DensityEffectCalculator;
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... ....oooOO0OOooo....
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class G4IonisParamMat
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{
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public:
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G4IonisParamMat(const G4Material*);
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~G4IonisParamMat();
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// parameters for mean energy loss calculation:
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inline
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G4double GetMeanExcitationEnergy() const {return fMeanExcitationEnergy;};
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void SetMeanExcitationEnergy(G4double value);
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G4double FindMeanExcitationEnergy(const G4Material*) const;
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inline
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G4double GetLogMeanExcEnergy() const {return fLogMeanExcEnergy;};
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inline
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G4double* GetShellCorrectionVector() const {return fShellCorrectionVector;};
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inline
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G4double GetTaul() const {return fTaul;};
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// parameters of the density correction:
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inline
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G4double GetPlasmaEnergy() const {return fPlasmaEnergy;};
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inline
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G4double GetAdjustmentFactor() const {return fAdjustmentFactor;};
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inline
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G4double GetCdensity() const {return fCdensity;};
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inline
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G4double GetMdensity() const {return fMdensity;};
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inline
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G4double GetAdensity() const {return fAdensity;};
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inline
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G4double GetX0density() const {return fX0density;};
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inline
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G4double GetX1density() const {return fX1density;};
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inline
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G4double GetD0density() const {return fD0density;};
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// user defined density correction parameterisation
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void SetDensityEffectParameters(G4double cd, G4double md, G4double ad,
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G4double x0, G4double x1, G4double d0);
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// defined density correction parameterisation via base material
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void SetDensityEffectParameters(const G4Material* bmat);
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void ComputeDensityEffectOnFly(G4bool);
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// compute density correction as a function of the kinematic variable
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// x = log10(beta*gamma)
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G4double DensityCorrection(G4double x);
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inline G4DensityEffectCalculator* GetDensityEffectCalculator()
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{ return fDensityEffectCalc; }
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// use parameterisation
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inline G4double GetDensityCorrection(G4double x);
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static G4DensityEffectData* GetDensityEffectData();
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// parameters of the energy loss fluctuation model:
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inline
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G4double GetF1fluct() const {return fF1fluct;};
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inline
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G4double GetF2fluct() const {return fF2fluct;};
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inline
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G4double GetEnergy1fluct() const {return fEnergy1fluct;};
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inline
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G4double GetLogEnergy1fluct() const {return fLogEnergy1fluct;};
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inline
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G4double GetEnergy2fluct() const {return fEnergy2fluct;};
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inline
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G4double GetLogEnergy2fluct() const {return fLogEnergy2fluct;};
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inline
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G4double GetEnergy0fluct() const {return fEnergy0fluct;};
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inline
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G4double GetRateionexcfluct() const {return fRateionexcfluct;};
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// parameters for ion corrections computations
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inline
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G4double GetZeffective() const {return fZeff;};
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inline
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G4double GetFermiEnergy() const {return fFermiEnergy;};
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inline
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G4double GetLFactor() const {return fLfactor;};
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inline
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G4double GetInvA23() const {return fInvA23;};
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// parameters for Birks attenuation:
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inline
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void SetBirksConstant(G4double value) {fBirks = value;};
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inline
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G4double GetBirksConstant() const {return fBirks;};
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// parameters for average energy per ion
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inline
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void SetMeanEnergyPerIonPair(G4double value) {fMeanEnergyPerIon = value;};
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inline
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G4double GetMeanEnergyPerIonPair() const {return fMeanEnergyPerIon;};
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G4IonisParamMat(__void__&);
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// Fake default constructor for usage restricted to direct object
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// persistency for clients requiring preallocation of memory for
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// persistifiable objects.
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private:
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// Compute mean parameters : ExcitationEnergy,Shell corretion vector ...
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void ComputeMeanParameters();
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// Compute parameters for the density effect
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void ComputeDensityEffectParameters();
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// Compute parameters for the energy fluctuation model
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void ComputeFluctModel();
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// Compute parameters for ion parameterizations
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void ComputeIonParameters();
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// operators
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G4IonisParamMat& operator=(const G4IonisParamMat&);
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G4bool operator==(const G4IonisParamMat&) const;
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G4bool operator!=(const G4IonisParamMat&) const;
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G4IonisParamMat(const G4IonisParamMat&);
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//
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// data members
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//
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const G4Material* fMaterial; // this material
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G4DensityEffectCalculator* fDensityEffectCalc; // calculator of the density effect
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G4double* fShellCorrectionVector; // shell correction coefficients
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// parameters for mean energy loss calculation
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G4double fMeanExcitationEnergy; //
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G4double fLogMeanExcEnergy; //
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G4double fTaul; // lower limit of Bethe-Bloch formula
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// parameters of the density correction
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G4double fCdensity; // mat.constant
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G4double fMdensity; // exponent
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G4double fAdensity; //
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G4double fX0density; //
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G4double fX1density; //
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G4double fD0density;
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G4double fPlasmaEnergy;
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G4double fAdjustmentFactor;
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// parameters of the energy loss fluctuation model
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G4double fF1fluct;
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G4double fF2fluct;
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G4double fEnergy1fluct;
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G4double fLogEnergy1fluct;
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G4double fEnergy2fluct;
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G4double fLogEnergy2fluct;
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G4double fEnergy0fluct;
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G4double fRateionexcfluct;
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// parameters for ion corrections computations
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G4double fZeff;
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G4double fFermiEnergy;
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G4double fLfactor;
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G4double fInvA23;
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// parameter for Birks attenuation
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G4double fBirks;
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// average energy per ion pair
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G4double fMeanEnergyPerIon;
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// static data created only once
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static G4DensityEffectData* fDensityData;
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G4double twoln10;
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#ifdef G4MULTITHREADED
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static G4Mutex ionisMutex;
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#endif
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};
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... ....oooOO0OOooo....
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inline G4double G4IonisParamMat::GetDensityCorrection(G4double x)
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{
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// x = log10(beta*gamma)
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G4double y = 0.0;
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if(x < fX0density) {
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if(fD0density > 0.0) { y = fD0density*G4Exp(twoln10*(x - fX0density)); }
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} else if(x >= fX1density) { y = twoln10*x - fCdensity; }
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else {y = twoln10*x - fCdensity + fAdensity*G4Exp(G4Log(fX1density - x)*fMdensity);}
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return y;
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... ....oooOO0OOooo....
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#endif
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