Gabriele Cosmo
274 lines
8.0 KiB
C++
274 lines
8.0 KiB
C++
//
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// ********************************************************************
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// * DISCLAIMER *
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// * *
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// * The following disclaimer summarizes all the specific disclaimers *
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// * of contributors to this software. The specific disclaimers,which *
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// * govern, are listed with their locations in: *
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// * http://cern.ch/geant4/license *
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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. *
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// * *
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// * This code implementation is the intellectual property of the *
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// * GEANT4 collaboration. *
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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 *
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// * statement, and all its terms. *
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// ********************************************************************
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//
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//
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// $Id: G4SandiaTable.hh,v 1.8.2.1 2001/06/28 19:10:29 gunter Exp $
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// GEANT4 tag $Name: $
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// class description
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//
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// This class is an interface to G4StaticSandiaData.
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// it provides - Sandia coeff for an element, given its Z
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// - sandia coeff for a material, given a pointer to it
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//
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... ....oooOO0OOooo....
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//
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// 03.04.01 fnulcof[4] added; returned if energy < emin
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// 30.01.01 major bug in the computation of AoverAvo and in the units (/g!)
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// in GetSandiaCofPerAtom(). mma
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// 18.11.98 simplified public interface; new methods for materials. mma
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// 10.06.97 created. V. Grichine
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//
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... ....oooOO0OOooo....
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#ifndef G4SANDIATABLE_HH
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#define G4SANDIATABLE_HH
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#include "G4OrderedTable.hh"
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#include "G4ios.hh"
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#include "globals.hh"
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#include <assert.h>
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class G4Material;
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... ....oooOO0OOooo....
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class G4SandiaTable
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{
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public: // with description
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G4SandiaTable(G4int);
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G4SandiaTable(G4Material*);
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~G4SandiaTable();
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//per atom of an Element:
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static G4int GetNbOfIntervals (G4int Z);
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static G4double GetSandiaCofPerAtom(G4int Z, G4int, G4int);
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static G4double* GetSandiaCofPerAtom(G4int Z, G4double energy);
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static G4double GetIonizationPot (G4int Z);
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static G4double GetZtoA (G4int Z);
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//per volume of a material:
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G4int GetMatNbOfIntervals() {return fMatNbOfIntervals;};
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G4double GetSandiaCofForMaterial(G4int,G4int);
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G4double* GetSandiaCofForMaterial(G4double energy);
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private:
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void ComputeMatSandiaMatrix();
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private:
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static const G4double fSandiaTable[981][5];
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static const G4int fNbOfIntervals[101];
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static G4int fCumulInterval[101];
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static const G4double fZtoAratio[101];
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static const G4double fIonizationPotentials[101];
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static G4double fSandiaCofPerAtom[4];
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G4Material* fMaterial;
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G4int fMatNbOfIntervals;
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G4OrderedTable* fMatSandiaMatrix;
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G4double fnulcof[4];
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/////////////////////////////////////////////////////////////////////
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//
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// Methods for PAI model
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public: // without description
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inline void SandiaSwap( G4double** da,
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G4int i,
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G4int j );
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void SandiaSort( G4double** da,
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G4int sz );
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G4int SandiaIntervals( G4int Z[],
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G4int el );
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G4int SandiaMixing( G4int Z[],
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const G4double fractionW[],
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G4int el,
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G4int mi );
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inline G4double GetPhotoAbsorpCof(G4int i , G4int j)const ;
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inline G4int GetMaxInterval() const ;
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//////////////////////////////////////////////////////////////////////////
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//
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// data members for PAI model
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private:
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static const G4int fNumberOfElements ;
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static const G4int fIntervalLimit ;
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static const G4int fNumberOfIntervals ;
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// G4double fPhotoAbsorptionCof[101][5] ; // SandiaTable for mixture
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G4double** fPhotoAbsorptionCof ; // SandiaTable for mixture
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// G4OrderedTable*
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G4int fMaxInterval ;
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//
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//
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//////////////////////////////////////////////////////////////////////////
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};
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... ....oooOO0OOooo....
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// Inline function implementations
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inline
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G4int G4SandiaTable::GetNbOfIntervals(G4int Z)
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{
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return fNbOfIntervals[Z];
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... ....oooOO0OOooo....
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inline
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G4double G4SandiaTable::GetSandiaCofPerAtom(G4int Z, G4int interval, G4int j)
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{
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assert (Z>0 && Z<101 && interval>=0 && interval<fNbOfIntervals[Z]
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&& j>=0 && j<5);
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G4int row = fCumulInterval[Z-1] + interval;
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if (j==0) return fSandiaTable[row][0]*keV;
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G4double AoverAvo = Z*amu/fZtoAratio[Z];
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return AoverAvo*(fSandiaTable[row][j]*cm2*pow(keV,G4double(j))/g);
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... ....oooOO0OOooo....
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inline
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G4double* G4SandiaTable::GetSandiaCofPerAtom(G4int Z, G4double energy)
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{
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assert (Z > 0);
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G4double Emin = fSandiaTable[fCumulInterval[Z-1]][0]*keV;
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G4double Iopot = fIonizationPotentials[Z]*eV;
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if (Iopot > Emin) Emin = Iopot;
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G4int interval = fNbOfIntervals[Z] - 1;
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G4int row = fCumulInterval[Z-1] + interval;
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while ((interval>0) && (energy<fSandiaTable[row][0]*keV))
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row = fCumulInterval[Z-1] + --interval;
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if (energy >= Emin)
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{
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G4double AoverAvo = Z*amu/fZtoAratio[Z];
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fSandiaCofPerAtom[0]=AoverAvo*(fSandiaTable[row][1]*cm2*keV/g);
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fSandiaCofPerAtom[1]=AoverAvo*(fSandiaTable[row][2]*cm2*keV*keV/g);
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fSandiaCofPerAtom[2]=AoverAvo*(fSandiaTable[row][3]*cm2*keV*keV*keV/g);
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fSandiaCofPerAtom[3]=AoverAvo*(fSandiaTable[row][4]*cm2*keV*keV*keV*keV/g);
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}
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else
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fSandiaCofPerAtom[0] = fSandiaCofPerAtom[1] = fSandiaCofPerAtom[2] =
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fSandiaCofPerAtom[3] = 0.;
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return fSandiaCofPerAtom;
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... ....oooOO0OOooo....
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inline
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G4double G4SandiaTable::GetIonizationPot(G4int Z)
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{
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return fIonizationPotentials[Z]*eV;
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... ....oooOO0OOooo....
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inline
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G4double G4SandiaTable::GetZtoA(G4int Z)
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{
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return fZtoAratio[Z];
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... ....oooOO0OOooo....
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///////////////////////////////////////////////////////////////////////
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//
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// Inline methods for PAI model
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inline
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void
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G4SandiaTable::SandiaSwap( G4double** da ,
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G4int i,
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G4int j )
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{
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G4double tmp = da[i][0] ;
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da[i][0] = da[j][0] ;
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da[j][0] = tmp ;
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}
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/////////////////////////////////////////////////////////////////////////
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//
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//
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inline
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G4double G4SandiaTable::GetPhotoAbsorpCof(G4int i, G4int j) const
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{
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G4double unitCof ;
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if(j == 0)
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{
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unitCof = keV ;
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}
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else
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{
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unitCof = (cm2/g)*pow(keV,(G4double)j) ;
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}
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return fPhotoAbsorptionCof[i][j]*unitCof ;
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}
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/////////////////////////////////////////////////////////////////////
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//
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//
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inline
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G4int G4SandiaTable::GetMaxInterval() const
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{
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return fMaxInterval ;
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}
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//
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//
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////////////////////////////////////////////////////////////////////////////
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#endif
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