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27 //
28 // File: G4TritonDecay.cc based on G4Alpha
29 // Author: A.Mereagglia (CENBG), imported in
30 // Date: 24 June 2019, imported in Geant4 o
31 // Description: //
32 // //
33 //
34 //////////////////////////////////////////////
35
36 #include "G4TritonDecay.hh"
37 #include "G4IonTable.hh"
38 #include "Randomize.hh"
39 #include "G4ThreeVector.hh"
40 #include "G4DynamicParticle.hh"
41 #include "G4DecayProducts.hh"
42 #include "G4PhysicalConstants.hh"
43 #include "G4SystemOfUnits.hh"
44 #include <iostream>
45 #include <iomanip>
46
47 G4TritonDecay::G4TritonDecay(const G4ParticleD
48 const G4double& bra
49 const G4double& exc
50 const G4Ions::G4Flo
51 : G4NuclearDecay("triton decay", Triton, exci
52 {
53 SetParent(theParentNucleus); // Store name
54 SetBR(branch);
55
56 SetNumberOfDaughters(2);
57 G4IonTable* theIonTable =
58 (G4IonTable*)(G4ParticleTable::GetParticle
59 G4int daughterZ = theParentNucleus->GetAtomi
60 G4int daughterA = theParentNucleus->GetAtomi
61 SetDaughter(0, theIonTable->GetIon(daughterZ
62 SetDaughter(1, "triton");
63 }
64
65
66 G4TritonDecay::~G4TritonDecay()
67 {}
68
69
70 G4DecayProducts* G4TritonDecay::DecayIt(G4doub
71 {
72 // Fill G4MT_parent with theParentNucleus (s
73 CheckAndFillParent();
74
75 // Fill G4MT_daughters with triton and resid
76 CheckAndFillDaughters();
77
78 G4double tritonMass = G4MT_daughters[1]->Get
79 // Excitation energy included in PDG mass
80 G4double nucleusMass = G4MT_daughters[0]->Ge
81
82 // Q value was calculated from atomic masses
83 // Use it to get correct triton energy.
84 G4double cmMomentum = std::sqrt(transitionQ*
85 (transitionQ +
86 (transitionQ +
87 (transitionQ +
88
89 // Set up final state
90 // parentParticle is set at rest here becaus
91 // is done later
92 G4DynamicParticle parentParticle(G4MT_parent
93 G4DecayProducts* products = new G4DecayProdu
94
95 G4double costheta = 2.*G4UniformRand()-1.0;
96 G4double sintheta = std::sqrt(1.0 - costheta
97 G4double phi = twopi*G4UniformRand()*rad;
98 G4ThreeVector direction(sintheta*std::cos(ph
99 costheta);
100
101 G4double KE = std::sqrt(cmMomentum*cmMomentu
102 - tritonMass;
103 G4DynamicParticle* daughterparticle =
104 new G4DynamicParticle(G4MT_daughters[1], d
105 products->PushProducts(daughterparticle);
106
107 KE = std::sqrt(cmMomentum*cmMomentum + nucle
108 daughterparticle =
109 new G4DynamicParticle(G4MT_daughters[0], -
110 products->PushProducts(daughterparticle);
111
112 // Energy conservation check
113 // For triton decays, do final energy check
114 // which is well-measured using atomic mass
115 // should not be used since they are not usu
116 // always decay atoms and not fully stripped
117 /*
118 G4int nProd = products->entries();
119 G4DynamicParticle* temp = 0;
120 G4double Esum = 0.0;
121 for (G4int i = 0; i < nProd; i++) {
122 temp = products->operator[](i);
123 Esum += temp->GetKineticEnergy();
124 }
125 G4double eCons = (transitionQ - Esum)/keV;
126 if (eCons > 1.e-07) G4cout << " Triton decay
127 */
128 return products;
129 }
130
131
132 void G4TritonDecay::DumpNuclearInfo()
133 {
134 G4cout << " G4TritonDecay for parent nucleus
135 G4cout << " decays to " << GetDaughterName(0
136 << " with branching ratio " << GetBR(
137 << transitionQ << G4endl;
138 }
139
140