physics/src/G4RDShellVacancy.cc

0001 //
0002 // ********************************************************************
0003 // * License and Disclaimer                                           *
0004 // *                                                                  *
0005 // * The  Geant4 software  is  copyright of the Copyright Holders  of *
0006 // * the Geant4 Collaboration.  It is provided  under  the terms  and *
0007 // * conditions of the Geant4 Software License,  included in the file *
0008 // * LICENSE and available at  http://cern.ch/geant4/license .  These *
0009 // * include a list of copyright holders.                             *
0010 // *                                                                  *
0011 // * Neither the authors of this software system, nor their employing *
0012 // * institutes,nor the agencies providing financial support for this *
0013 // * work  make  any representation or  warranty, express or implied, *
0014 // * regarding  this  software system or assume any liability for its *
0015 // * use.  Please see the license in the file  LICENSE  and URL above *
0016 // * for the full disclaimer and the limitation of liability.         *
0017 // *                                                                  *
0018 // * This  code  implementation is the result of  the  scientific and *
0019 // * technical work of the GEANT4 collaboration.                      *
0020 // * By using,  copying,  modifying or  distributing the software (or *
0021 // * any work based  on the software)  you  agree  to acknowledge its *
0022 // * use  in  resulting  scientific  publications,  and indicate your *
0023 // * acceptance of all terms of the Geant4 Software license.          *
0024 // ********************************************************************
0025 //
0026 //
0027 //
0028 // Author: Elena Guardincerri (Elena.Guardincerri@ge.infn.it)
0029 //
0030 // History:
0031 // -----------
0032 // 21 Sept 2001 Elena Guardincerri     Created
0033 // 25 Mar  2002  V.Ivanchenko          Change AverageNOfIonisations int->double
0034 //
0035 // -------------------------------------------------------------------
0036
0037 #include "G4RDShellVacancy.hh"
0038 #include "G4MaterialCutsCouple.hh"
0039 #include "G4Material.hh"
0040 #include "G4Poisson.hh"
0041 #include "G4RDVEMDataSet.hh"
0042
0043 G4RDShellVacancy::G4RDShellVacancy()
0044
0045 { }
0046
0047 G4RDShellVacancy::~G4RDShellVacancy()
0048
0049 {
0050   G4int size = xsis.size();
0051   for (G4int k =0; k<size; k++)
0052     {
0053       delete xsis[k];
0054       xsis[k] = 0;
0055     }
0056 }
0057
0058 void G4RDShellVacancy::AddXsiTable(G4RDVEMDataSet* set)
0059
0060 {
0061   xsis.push_back(set);
0062 }
0063
0064 std::vector<G4int> G4RDShellVacancy::GenerateNumberOfIonisations(const G4MaterialCutsCouple*
0065                                  couple,
0066                                  G4double
0067                                  incidentEnergy,
0068                                  G4double eLoss) const
0069
0070 {
0071   std::vector<G4int> numberOfIonisations;
0072   const G4Material* material = couple->GetMaterial();
0073   G4int numberOfElements = material->GetNumberOfElements();
0074
0075   for (G4int i = 0; i<numberOfElements; i++)
0076     {
0077       G4double averageNumberOfIonisations = AverageNOfIonisations(couple,
0078                                       i,
0079                                       incidentEnergy,
0080                                       eLoss);
0081       G4int ionisations = 0;
0082       if(averageNumberOfIonisations > 0.0) {
0083         ionisations = (G4int) G4Poisson(averageNumberOfIonisations);
0084       }
0085
0086       numberOfIonisations.push_back(ionisations);
0087
0088     }
0089   return numberOfIonisations;
0090
0091 }
0092
0093 G4double G4RDShellVacancy::AverageNOfIonisations(const G4MaterialCutsCouple* couple,
0094                                  G4int index,
0095                                  G4double energy,
0096                                  G4double eLoss) const
0097
0098 {
0099   //  G4int indexOfElementInMaterial= -1;
0100
0101   G4double averageEnergy = energy - eLoss/2.;
0102
0103   size_t indexInMaterialTable = couple->GetIndex();
0104
0105   G4RDVEMDataSet* aSetOfXsi = xsis[indexInMaterialTable];
0106
0107   G4double aXsi = aSetOfXsi->FindValue(averageEnergy,index);
0108
0109   return aXsi * eLoss;
0110 }