| Geant4 Cross Reference |
1 //
2 // ********************************************************************
3 // * License and Disclaimer *
4 // * *
5 // * The Geant4 software is copyright of the Copyright Holders of *
6 // * the Geant4 Collaboration. It is provided under the terms and *
7 // * conditions of the Geant4 Software License, included in the file *
8 // * LICENSE and available at http://cern.ch/geant4/license . These *
9 // * include a list of copyright holders. *
10 // * *
11 // * Neither the authors of this software system, nor their employing *
12 // * institutes,nor the agencies providing financial support for this *
13 // * work make any representation or warranty, express or implied, *
14 // * regarding this software system or assume any liability for its *
15 // * use. Please see the license in the file LICENSE and URL above *
16 // * for the full disclaimer and the limitation of liability. *
17 // * *
18 // * This code implementation is the result of the scientific and *
19 // * technical work of the GEANT4 collaboration. *
20 // * By using, copying, modifying or distributing the software (or *
21 // * any work based on the software) you agree to acknowledge its *
22 // * use in resulting scientific publications, and indicate your *
23 // * acceptance of all terms of the Geant4 Software license. *
24 // ********************************************************************
25 //
26 //
27 // Author: Vladimir Ivanchenko
28 //
29 // History:
30 // --------
31 // 31 May 2011 V.Ivanchenko Created
32 // 09 Mar 2012 L.Pandola update methods
33 //
34 //
35
36 #include "G4LivermoreIonisationCrossSection.hh"
37 #include "G4SystemOfUnits.hh"
38 #include "G4AtomicTransitionManager.hh"
39 #include "G4VCrossSectionHandler.hh"
40 #include "G4eCrossSectionHandler.hh"
41 #include "G4SemiLogInterpolation.hh"
42
43 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
44
45
46 G4LivermoreIonisationCrossSection::G4LivermoreIonisationCrossSection(
47 const G4String& nam) : G4VhShellCrossSection(nam), crossSectionHandler(nullptr)
48 {
49 fLowEnergyLimit = 10.0*eV;
50 fHighEnergyLimit = 100.0*GeV;
51
52 transitionManager = G4AtomicTransitionManager::Instance();
53 verboseLevel = 0;
54
55 Initialise();
56 }
57
58 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
59
60 G4LivermoreIonisationCrossSection::~G4LivermoreIonisationCrossSection()
61 {
62 delete crossSectionHandler;
63 }
64
65 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
66
67 void G4LivermoreIonisationCrossSection::Initialise()
68 {
69 const G4int binForFluo = 20;
70 G4int nbin = G4int(std::log10(fHighEnergyLimit/fLowEnergyLimit) + 0.5);
71 if(nbin <= 0) { nbin = 1; }
72 nbin *= binForFluo;
73
74 // Data on shell ionisation x-sections
75 if (crossSectionHandler) {
76 crossSectionHandler->Clear();
77 delete crossSectionHandler;
78 }
79
80 G4VDataSetAlgorithm* inter = new G4SemiLogInterpolation();
81 crossSectionHandler =
82 new G4eCrossSectionHandler(inter,fLowEnergyLimit,fHighEnergyLimit,nbin);
83 crossSectionHandler->LoadShellData("ioni/ion-ss-cs-");
84 //G4cout << "!!! G4LivermoreIonisationCrossSection::Initialise()" << G4endl;
85 }
86
87 G4double
88 G4LivermoreIonisationCrossSection::CrossSection(G4int Z, G4AtomicShellEnumerator shell,
89 G4double kinEnergy, G4double,
90 const G4Material*)
91 {
92 G4double cross = 0.0;
93 G4int n = G4int(shell);
94 G4int nmax = std::min(9,transitionManager->NumberOfShells(Z));
95 if(Z > 6 && Z < 93 && n < nmax &&
96 kinEnergy >= fLowEnergyLimit && kinEnergy <= fHighEnergyLimit) {
97 cross = crossSectionHandler->FindValue(Z, kinEnergy, n);
98 }
99 return cross;
100 }
101
102 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
103
104 std::vector<G4double>
105 G4LivermoreIonisationCrossSection::GetCrossSection(G4int Z,
106 G4double kinEnergy,
107 G4double, G4double,
108 const G4Material*)
109 {
110 G4int nmax = std::min(9,transitionManager->NumberOfShells(Z));
111 std::vector<G4double> vec(nmax,0.0);
112 for(G4int i=0; i<nmax; ++i) {
113 vec[i] = CrossSection(Z, G4AtomicShellEnumerator(i), kinEnergy);
114 }
115 return vec;
116 }
117
118 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
119
120 std::vector<G4double>
121 G4LivermoreIonisationCrossSection::Probabilities(G4int Z,
122 G4double kinEnergy,
123 G4double,
124 G4double,
125 const G4Material*)
126 {
127 std::vector<G4double> vec = GetCrossSection(Z, kinEnergy);
128 size_t n = vec.size();
129 size_t i;
130 G4double sum = 0.0;
131 for(i=0; i<n; ++i) { sum += vec[i]; }
132 if(sum > 0.0) {
133 sum = 1.0/sum;
134 for(i=0; i<n; ++i) { vec[i] = vec[i]*sum; }
135 }
136 return vec;
137 }
138
139 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
140