//
// ********************************************************************
// * License and Disclaimer *
// * *
// * The Geant4 software is copyright of the Copyright Holders of *
// * the Geant4 Collaboration. It is provided under the terms and *
// * conditions of the Geant4 Software License, included in the file *
// * LICENSE and available at http://cern.ch/geant4/license . These *
// * include a list of copyright holders. *
// * *
// * Neither the authors of this software system, nor their employing *
// * institutes,nor the agencies providing financial support for this *
// * work make any representation or warranty, express or implied, *
// * regarding this software system or assume any liability for its *
// * use. Please see the license in the file LICENSE and URL above *
// * for the full disclaimer and the limitation of liability. *
// * *
// * This code implementation is the result of the scientific and *
// * technical work of the GEANT4 collaboration. *
// * By using, copying, modifying or distributing the software (or *
// * any work based on the software) you agree to acknowledge its *
// * use in resulting scientific publications, and indicate your *
// * acceptance of all terms of the Geant4 Software license. *
// ********************************************************************
//
// $Id: G4IonisParamMat.hh 67044 2013-01-30 08:50:06Z gcosmo $
//
// class description
//
// The class contains few (physical) quantities related to the Ionisation
// process, for a material defined by its pointer G4Material*
//
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... ....oooOO0OOooo....
// 09-07-98: data moved from G4Material (mma)
// 09-03-01: copy constructor and assignement operator in public (mma)
// 28-10-02: add setMeanExcitationEnergy (V.Ivanchenko)
// 27-09-07: add computation of parameters for ions (V.Ivanchenko)
// 04-03-08: add fBirks constant (mma)
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... ....oooOO0OOooo....
#ifndef G4IonisParamMat_HH
#define G4IonisParamMat_HH
#include "G4ios.hh"
#include "globals.hh"
class G4Material; // forward declaration
class G4DensityEffectData;
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... ....oooOO0OOooo....
class G4IonisParamMat // with description
{
public:
G4IonisParamMat(G4Material*);
virtual ~G4IonisParamMat();
//
// retrieval methods
//
// parameters for mean energy loss calculation:
G4double GetMeanExcitationEnergy() const {return fMeanExcitationEnergy;};
void SetMeanExcitationEnergy(G4double value);
G4double FindMeanExcitationEnergy(const G4String& chFormula);
G4double GetLogMeanExcEnergy() const {return fLogMeanExcEnergy;};
G4double* GetShellCorrectionVector() const {return fShellCorrectionVector;};
G4double GetTaul() const {return fTaul;};
// parameters of the density correction:
G4double GetPlasmaEnergy() const {return fPlasmaEnergy;};
G4double GetAdjustmentFactor() const {return fAdjustmentFactor;};
G4double GetCdensity() const {return fCdensity;};
G4double GetMdensity() const {return fMdensity;};
G4double GetAdensity() const {return fAdensity;};
G4double GetX0density() const {return fX0density;};
G4double GetX1density() const {return fX1density;};
G4double GetD0density() const {return fD0density;};
// compute density correction as a function of the kinematic variable
// x = log10(beta*gamma)
inline G4double DensityCorrection(G4double x);
static G4DensityEffectData* GetDensityEffectData();
// parameters of the energy loss fluctuation model:
G4double GetF1fluct() const {return fF1fluct;};
G4double GetF2fluct() const {return fF2fluct;};
G4double GetEnergy1fluct() const {return fEnergy1fluct;};
G4double GetLogEnergy1fluct() const {return fLogEnergy1fluct;};
G4double GetEnergy2fluct() const {return fEnergy2fluct;};
G4double GetLogEnergy2fluct() const {return fLogEnergy2fluct;};
G4double GetEnergy0fluct() const {return fEnergy0fluct;};
G4double GetRateionexcfluct() const {return fRateionexcfluct;};
// parameters for ion corrections computations
G4double GetZeffective() const {return fZeff;};
G4double GetFermiEnergy() const {return fFermiEnergy;};
G4double GetLFactor() const {return fLfactor;};
G4double GetInvA23() const {return fInvA23;};
// parameters for Birks attenuation:
void SetBirksConstant(G4double value) {fBirks = value;};
G4double GetBirksConstant() const {return fBirks;};
// parameters for average energy per ion
void SetMeanEnergyPerIonPair(G4double value) {fMeanEnergyPerIon = value;};
G4double GetMeanEnergyPerIonPair() const {return fMeanEnergyPerIon;};
public: // without description
G4IonisParamMat(const G4IonisParamMat&);
G4IonisParamMat& operator=(const G4IonisParamMat&);
G4int operator==(const G4IonisParamMat&) const;
G4int operator!=(const G4IonisParamMat&) const;
G4IonisParamMat(__void__&);
// Fake default constructor for usage restricted to direct object
// persistency for clients requiring preallocation of memory for
// persistifiable objects.
private:
// Compute mean parameters : ExcitationEnergy,Shell corretion vector ...
void ComputeMeanParameters();
// Compute parameters for the density effect
void ComputeDensityEffect();
// Compute parameters for the energy fluctuation model
void ComputeFluctModel();
// Compute parameters for ion parameterizations
void ComputeIonParameters();
private:
//
// data members
//
G4Material* fMaterial; // this material
// parameters for mean energy loss calculation
G4double fMeanExcitationEnergy; //
G4double fLogMeanExcEnergy; //
G4double* fShellCorrectionVector; // shell correction coefficients
G4double fTaul; // lower limit of Bethe-Bloch formula
// parameters of the density correction
G4double fCdensity; // mat.constant
G4double fMdensity; // exponent
G4double fAdensity; //
G4double fX0density; //
G4double fX1density; //
G4double fD0density;
G4double fPlasmaEnergy;
G4double fAdjustmentFactor;
// parameters of the energy loss fluctuation model
G4double fF1fluct;
G4double fF2fluct;
G4double fEnergy1fluct;
G4double fLogEnergy1fluct;
G4double fEnergy2fluct;
G4double fLogEnergy2fluct;
G4double fEnergy0fluct;
G4double fRateionexcfluct;
// parameters for ion corrections computations
G4double fZeff;
G4double fFermiEnergy;
G4double fLfactor;
G4double fInvA23;
// parameter for Birks attenuation
G4double fBirks;
// average energy per ion pair
G4double fMeanEnergyPerIon;
// static data created only once
static G4DensityEffectData* fDensityData;
G4double twoln10;
};
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... ....oooOO0OOooo....
inline G4double G4IonisParamMat::DensityCorrection(G4double x)
{
// x = log10(beta*gamma)
G4double y = 0.0;
if(x < fX0density) {
if(fD0density > 0.0) { y = fD0density*std::pow(10.,2*(x - fX0density)); }
} else if(x >= fX1density) { y = twoln10*x - fCdensity; }
else {y = twoln10*x - fCdensity + fAdensity*std::pow(fX1density - x, fMdensity);}
return y;
}
#endif