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27 //
28 // File: G4LENDGammaCrossSection.cc
29 // Date: 30 March 2020
30 // Author: Dennis H. Wright
31 //
32 // Description: cross sections for inelastic
33 // nuclei including gamma-induce
34 // is very similar to G4LENDComb
35 // does not sample elastic or ca
36 // no such data for gammas in GN
37 //
38 //////////////////////////////////////////////
39
40 #include "G4LENDGammaCrossSection.hh"
41 #include "G4LENDInelasticCrossSection.hh"
42 #include "G4LENDFissionCrossSection.hh"
43 #include "Randomize.hh"
44
45
46 G4LENDGammaCrossSection::G4LENDGammaCrossSecti
47 :G4LENDCrossSection("LENDGammaCrossSection")
48 {
49 proj = pd;
50 inelasticXS = new G4LENDInelasticCrossSectio
51 fissionXS = new G4LENDFissionCrossSection(pd
52 }
53
54 void G4LENDGammaCrossSection::BuildPhysicsTabl
55 {
56 inelasticXS->BuildPhysicsTable(pd);
57 fissionXS->BuildPhysicsTable(pd);
58 create_used_target_map();
59 }
60
61 G4double
62 G4LENDGammaCrossSection::GetIsoCrossSection(co
63 G4
64 co
65 co
66 co
67 {
68 G4double XS = 0.0;
69 XS += inelasticXS->GetIsoCrossSection(dp, iZ
70 XS += fissionXS->GetIsoCrossSection(dp, iZ,
71 //G4cout << "G4LENDGammaCrossSection::GetIso
72 // << XS/CLHEP::barn << " [barn]" << G
73 return XS;
74 }
75
76 G4int G4LENDGammaCrossSection::SelectChannel(c
77 G
78 c
79 c
80 c
81 {
82 G4int ichannel = 1;
83 G4double XSs[2];
84 XSs[0] = inelasticXS->GetIsoCrossSection(dp,
85 XSs[1] = XSs[0] + fissionXS->GetIsoCrossSect
86
87 G4double total = XSs[1];
88
89 G4double random = G4UniformRand();
90 for (G4int i = 0; i < 2; i++) {
91 if (random*total < XSs[i]) {
92 ichannel = i;
93 break;
94 }
95 }
96
97 return ichannel;
98 }
99
100