Gabriele Cosmo
195 lines
7.5 KiB
C++
195 lines
7.5 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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// 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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// 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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#ifndef G4IonisParamMat_HH
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#define G4IonisParamMat_HH
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#include "G4DensityEffectCalculator.hh"
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#include "G4ios.hh"
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#include "globals.hh"
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class G4Material;
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class G4DensityEffectData;
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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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G4IonisParamMat& operator=(const G4IonisParamMat&) = delete;
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G4IonisParamMat(const G4IonisParamMat&) = delete;
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// parameters for mean energy loss calculation:
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inline 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 G4double GetLogMeanExcEnergy() const { return fLogMeanExcEnergy; };
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inline G4double* GetShellCorrectionVector() const { return fShellCorrectionVector; };
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inline G4double GetTaul() const { return fTaul; };
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// parameters of the density correction:
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inline G4double GetPlasmaEnergy() const { return fPlasmaEnergy; };
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inline G4double GetAdjustmentFactor() const { return fAdjustmentFactor; };
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inline G4double GetCdensity() const { return fCdensity; };
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inline G4double GetMdensity() const { return fMdensity; };
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inline G4double GetAdensity() const { return fAdensity; };
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inline G4double GetX0density() const { return fX0density; };
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inline G4double GetX1density() const { return fX1density; };
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inline G4double GetD0density() const { return fD0density; };
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// user defined density correction parameterisation
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void SetDensityEffectParameters(
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G4double cd, G4double md, G4double ad, 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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inline G4DensityEffectCalculator* GetDensityEffectCalculator() const
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{
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return fDensityEffectCalc;
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}
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// compute density correction as a function of the kinematic variable
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// x = log10(beta*gamma) using parameterisation of calculator
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inline G4double DensityCorrection(G4double x) const
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{
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return (nullptr == fDensityEffectCalc) ? GetDensityCorrection(x)
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: fDensityEffectCalc->ComputeDensityCorrection(x);
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}
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// use parameterisation
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G4double GetDensityCorrection(G4double x) const;
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static G4DensityEffectData* GetDensityEffectData();
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// parameters of the energy loss fluctuation model:
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inline G4double GetF1fluct() const { return fF1fluct; };
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inline G4double GetF2fluct() const { return fF2fluct; };
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inline G4double GetEnergy1fluct() const { return fEnergy1fluct; };
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inline G4double GetLogEnergy1fluct() const { return fLogEnergy1fluct; };
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inline G4double GetEnergy2fluct() const { return fEnergy2fluct; };
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inline G4double GetLogEnergy2fluct() const { return fLogEnergy2fluct; };
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inline G4double GetEnergy0fluct() const { return fEnergy0fluct; };
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inline G4double GetRateionexcfluct() const { return fRateionexcfluct; };
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// parameters for ion corrections computations
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inline G4double GetZeffective() const { return fZeff; };
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inline G4double GetFermiEnergy() const { return fFermiEnergy; };
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inline G4double GetLFactor() const { return fLfactor; };
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inline G4double GetInvA23() const { return fInvA23; };
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// parameters for Birks attenuation:
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inline void SetBirksConstant(G4double value) { fBirks = value; };
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inline G4double GetBirksConstant() const { return fBirks; };
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// parameters for average energy per ion
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inline void SetMeanEnergyPerIonPair(G4double value) { fMeanEnergyPerIon = value; };
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inline G4double GetMeanEnergyPerIonPair() const { return fMeanEnergyPerIon; };
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// operators
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G4bool operator==(const G4IonisParamMat&) const = delete;
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G4bool operator!=(const G4IonisParamMat&) const = delete;
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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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//
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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; // online calculator
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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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G4double twoln10;
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// static data created only once
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static G4DensityEffectData* fDensityData;
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};
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#endif
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