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25 //
26 // V. Ivanchenko, 21 April 2023 Data structure
27 //
28
29 #include "G4ParticleHPNucLevel.hh"
30
31 #include "G4Gamma.hh"
32 #include "G4RandomDirection.hh"
33 #include "Randomize.hh"
34
35 G4ParticleHPNucLevel::G4ParticleHPNucLevel(G4d
36
37 void G4ParticleHPNucLevel::AddGamma(G4double e
38 {
39 gammaData x;
40 x.gammaEnergy = e;
41 x.cumProbability = w;
42 x.next = idx;
43 gammas.push_back(x);
44 ++nGammas;
45 }
46
47 void G4ParticleHPNucLevel::Normalize()
48 {
49 if (gammas.empty()) {
50 return;
51 }
52 G4double sum = 0.0;
53 for (auto& gam : gammas) {
54 sum += gam.cumProbability;
55 }
56 if (sum <= 0.0) {
57 return;
58 }
59
60 G4double norm = 1.0 / sum;
61 sum = 0;
62 for (auto& gam : gammas) {
63 sum += norm * gam.cumProbability;
64 gam.cumProbability = sum;
65 }
66 gammas[nGammas - 1].cumProbability = 1.0;
67 }
68
69 G4ReactionProduct* G4ParticleHPNucLevel::GetDe
70 {
71 if (gammas.empty()) {
72 return nullptr;
73 }
74 G4double q = G4UniformRand();
75 G4double e = 0.0;
76 for (auto& gam : gammas) {
77 if (q <= gam.cumProbability) {
78 e = gam.gammaEnergy;
79 idx = gam.next;
80 break;
81 }
82 }
83 if (e <= 0.0) {
84 return nullptr;
85 }
86 G4ThreeVector p = G4RandomDirection();
87 p *= e;
88 auto res = new G4ReactionProduct(G4Gamma::Ga
89 res->SetMomentum(p);
90 res->SetKineticEnergy(e);
91 return res;
92 }
93