| Geant4 Cross Reference |
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25 //
26 #include "G4LENDCombinedCrossSection.hh"
27 #include "G4LENDElasticCrossSection.hh"
28 #include "G4LENDInelasticCrossSection.hh"
29 #include "G4LENDCaptureCrossSection.hh"
30 #include "G4LENDFissionCrossSection.hh"
31 #include "Randomize.hh"
32
33
34 G4LENDCombinedCrossSection::G4LENDCombinedCrossSection( G4ParticleDefinition* pd )
35 :G4LENDCrossSection("LENDCombinedCrossSection")
36 {
37 proj = pd;
38 elasticXS = new G4LENDElasticCrossSection( pd );
39 inelasticXS = new G4LENDInelasticCrossSection( pd );
40 captureXS = new G4LENDCaptureCrossSection( pd );
41 fissionXS = new G4LENDFissionCrossSection( pd );
42 }
43
44 void G4LENDCombinedCrossSection::BuildPhysicsTable( const G4ParticleDefinition& pd )
45 {
46 elasticXS->BuildPhysicsTable( pd );
47 inelasticXS->BuildPhysicsTable( pd );
48 captureXS->BuildPhysicsTable( pd );
49 fissionXS->BuildPhysicsTable( pd );
50 create_used_target_map();
51 }
52
53 G4double G4LENDCombinedCrossSection::GetIsoCrossSection( const G4DynamicParticle* dp , G4int iZ , G4int iA ,
54 const G4Isotope* isotope , const G4Element* /*elment*/ , const G4Material* material )
55 {
56 G4double XS = 0.0;
57 XS += elasticXS->GetIsoCrossSection( dp, iZ, iA, isotope, NULL , material );
58 XS += inelasticXS->GetIsoCrossSection( dp, iZ, iA, isotope, NULL , material );
59 XS += captureXS->GetIsoCrossSection( dp, iZ, iA, isotope, NULL , material );
60 XS += fissionXS->GetIsoCrossSection( dp, iZ, iA, isotope, NULL , material );
61 //G4cout << "G4LENDCombinedCrossSection::GetIsoCrossSection " << XS/CLHEP::barn << " [barn]" << G4endl;
62 return XS;
63 }
64
65 G4int G4LENDCombinedCrossSection::SelectChannel( const G4DynamicParticle* dp , G4int iZ , G4int iA ,
66 const G4Isotope* isotope , const G4Element* /*elment*/ , const G4Material* material )
67 {
68 G4int ichannel = 3;
69 G4double XSs[4];
70 XSs[0] = elasticXS->GetIsoCrossSection( dp, iZ, iA, isotope, NULL , material );
71 XSs[1] = XSs[0] + inelasticXS->GetIsoCrossSection( dp, iZ, iA, isotope, NULL , material );
72 XSs[2] = XSs[1] + captureXS->GetIsoCrossSection( dp, iZ, iA, isotope, NULL , material );
73 XSs[3] = XSs[2] + fissionXS->GetIsoCrossSection( dp, iZ, iA, isotope, NULL , material );
74
75 G4double total = XSs[3];
76
77 G4double random = G4UniformRand();
78 for (G4int i = 0 ; i < 4 ; i++) {
79 if (random*total < XSs[i]) {
80 ichannel = i;
81 break;
82 }
83 }
84
85 return ichannel;
86 }
87