G4ShellVacancy.cc

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//
// $Id: G4ShellVacancy.cc
// GEANT4 tag $Name:
//
// Author: Elena Guardincerri ([email protected])
//
// History:
// -----------
// 21 Sept 2001 Elena Guardincerri     Created
// 25 Mar  2002  V.Ivanchenko          Change AverageNOfIonisations int->double
//
// -------------------------------------------------------------------
 
#include "G4ShellVacancy.hh"
#include "G4MaterialCutsCouple.hh"
#include "G4Material.hh"
#include "G4Poisson.hh"
#include "G4VEMDataSet.hh"
 
G4ShellVacancy::G4ShellVacancy()
 
{ }
 
G4ShellVacancy::~G4ShellVacancy()
{
  G4int size = xsis.size();
  for (G4int k =0; k<size; k++)
    {
      delete xsis[k];
      xsis[k] = 0;
    }
}
 
void G4ShellVacancy::AddXsiTable(G4VEMDataSet* p)
{
  xsis.push_back(p);
}
 
std::vector<G4int> G4ShellVacancy::GenerateNumberOfIonisations(const G4MaterialCutsCouple*
                                 couple,
                                 G4double
                                 incidentEnergy,
                                 G4double eLoss) const
 
{
  std::vector<G4int> numberOfIonisations;
  const G4Material* material = couple->GetMaterial();
  G4int numberOfElements = material->GetNumberOfElements();
 
  for (G4int i = 0; i<numberOfElements; i++)
    {
      G4double averageNumberOfIonisations = AverageNOfIonisations(couple,
                                      i,
                                      incidentEnergy,
                                      eLoss);
      G4int ionisations = 0;
      if(averageNumberOfIonisations > 0.0) {
        ionisations = (G4int) G4Poisson(averageNumberOfIonisations);
      }
 
      numberOfIonisations.push_back(ionisations);
 
    }
  return numberOfIonisations;
 
}
 
G4double G4ShellVacancy::AverageNOfIonisations(const G4MaterialCutsCouple* couple,
                                 G4int index,
                                 G4double energy,
                                 G4double eLoss) const
 
{
  //  G4int indexOfElementInMaterial= -1;
 
  G4double averageEnergy = energy - eLoss/2.;
 
  size_t indexInMaterialTable = couple->GetIndex();
 
  G4VEMDataSet* aSetOfXsi = xsis[indexInMaterialTable];
 
  G4double aXsi = aSetOfXsi->FindValue(averageEnergy,index);
 
  return aXsi * eLoss;
}