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G4ecpssrFormFactorKxsModel.cc
Go to the documentation of this file. Or view the newest version in sPHENIX GitHub for file G4ecpssrFormFactorKxsModel.cc
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18 // * This code implementation is the result of the scientific and *
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25 //
26 // History:
27 // -----------
28 // 01 Oct 2011 A.M., S.I. - 1st implementation
29 //
30 // Class description
31 // ----------------
32 // Computation of K, L & M shell ECPSSR ionisation cross sections for protons and alphas
33 // Based on the work of A. Taborda et al.
34 // X-Ray Spectrom. 2011, 40, 127-134
35 // ---------------------------------------------------------------------------------------
36 
37 #include <fstream>
38 #include <iomanip>
39 
41 
42 #include "globals.hh"
43 #include "G4SystemOfUnits.hh"
44 #include "G4ios.hh"
45 
46 #include "G4EMDataSet.hh"
47 #include "G4LogLogInterpolation.hh"
48 #include "G4Proton.hh"
49 #include "G4Alpha.hh"
50 
51 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
52 
54 {
56 
57  for (G4int i=3; i<93; i++)
58  {
60  protonDataSetMap[i]->LoadData("pixe/ecpssr/proton/k-i01m001c01-");
61  }
62 
63  for (G4int i=3; i<93; i++)
64  {
66  alphaDataSetMap[i]->LoadData("pixe/ecpssr/alpha/k-i02m004c02-");
67  }
68 
69 }
70 
71 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
72 
74 {
75  protonDataSetMap.clear();
76  alphaDataSetMap.clear();
77  delete interpolation;
78 }
79 
80 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
81 
83 {
84  G4Proton* aProton = G4Proton::Proton();
85  G4Alpha* aAlpha = G4Alpha::Alpha();
86  G4double sigma = 0;
87 
88  if (energyIncident > 0.1*MeV && energyIncident < 100.*MeV && zTarget < 93 && zTarget > 2) {
89 
90  if (massIncident == aProton->GetPDGMass())
91  {
92  sigma = protonDataSetMap[zTarget]->FindValue(energyIncident/MeV);
93  if (sigma !=0 && energyIncident > protonDataSetMap[zTarget]->GetEnergies(0).back()*MeV) return 0.;
94  }
95  else if (massIncident == aAlpha->GetPDGMass())
96  {
97  sigma = alphaDataSetMap[zTarget]->FindValue(energyIncident/MeV);
98  if (sigma !=0 && energyIncident > alphaDataSetMap[zTarget]->GetEnergies(0).back()*MeV) return 0.;
99  }
100  else
101  {
102  sigma = 0.;
103  }
104  }
105 
106  // sigma is in internal units: it has been converted from
107  // the input file in barns bt the EmDataset
108  return sigma;
109 }