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26 ////////////////////////////////////////////// 26 ////////////////////////////////////////////////////////////////////////////////
27 // 27 // //
28 // File: G4SFDecay.cc 28 // File: G4SFDecay.cc //
29 // Author: D.H. Wright (SLAC) 29 // Author: D.H. Wright (SLAC) //
30 // Date: 27 March 2019 30 // Date: 27 March 2019 //
31 // 31 // //
32 ////////////////////////////////////////////// 32 ////////////////////////////////////////////////////////////////////////////////
33 33
34 #include "G4SFDecay.hh" 34 #include "G4SFDecay.hh"
35 #include "G4fissionEvent.hh" 35 #include "G4fissionEvent.hh"
36 #include "G4IonTable.hh" 36 #include "G4IonTable.hh"
37 #include "G4ThreeVector.hh" 37 #include "G4ThreeVector.hh"
38 #include "G4LorentzVector.hh" 38 #include "G4LorentzVector.hh"
39 #include "G4DynamicParticle.hh" 39 #include "G4DynamicParticle.hh"
40 #include "G4DecayProducts.hh" 40 #include "G4DecayProducts.hh"
41 #include "G4Neutron.hh" 41 #include "G4Neutron.hh"
42 #include "G4Gamma.hh" 42 #include "G4Gamma.hh"
43 #include "G4SystemOfUnits.hh" 43 #include "G4SystemOfUnits.hh"
44 #include "G4PhysicalConstants.hh" 44 #include "G4PhysicalConstants.hh"
45 45
46 46
47 G4SFDecay::G4SFDecay(const G4ParticleDefinitio 47 G4SFDecay::G4SFDecay(const G4ParticleDefinition* theParentNucleus,
48 const G4double& branch, c 48 const G4double& branch, const G4double& Qvalue,
49 const G4double& excitatio 49 const G4double& excitationE,
50 const G4Ions::G4FloatLeve 50 const G4Ions::G4FloatLevelBase& flb)
51 : G4NuclearDecay("SF decay", SpFission, excit 51 : G4NuclearDecay("SF decay", SpFission, excitationE, flb), transitionQ(Qvalue)
52 { 52 {
53 SetParent(theParentNucleus); // Store name 53 SetParent(theParentNucleus); // Store name of parent nucleus, delete G4MT_parent
54 SetBR(branch); 54 SetBR(branch);
55 55
56 parentZ = theParentNucleus->GetAtomicNumber( 56 parentZ = theParentNucleus->GetAtomicNumber();
57 parentA = theParentNucleus->GetAtomicMass(); 57 parentA = theParentNucleus->GetAtomicMass();
58 58
59 // SetNumberOfDaughters(0); doesn't seem to 59 // SetNumberOfDaughters(0); doesn't seem to work
60 // Set to 1 for now 60 // Set to 1 for now
61 // When we later install proper fragment gene 61 // When we later install proper fragment generation, set this to 2
62 // and modify Z and A in DecayIt() 62 // and modify Z and A in DecayIt()
63 SetNumberOfDaughters(1); 63 SetNumberOfDaughters(1);
64 G4IonTable* theIonTable = 64 G4IonTable* theIonTable =
65 (G4IonTable*)(G4ParticleTable::GetParticle 65 (G4IonTable*)(G4ParticleTable::GetParticleTable()->GetIonTable());
66 SetDaughter(0, theIonTable->GetIon(parentZ, 66 SetDaughter(0, theIonTable->GetIon(parentZ, parentA, excitationE, flb) );
67 } 67 }
68 68
69 69
70 G4SFDecay::~G4SFDecay() 70 G4SFDecay::~G4SFDecay()
71 {} 71 {}
72 72
73 73
74 G4DecayProducts* G4SFDecay::DecayIt(G4double) 74 G4DecayProducts* G4SFDecay::DecayIt(G4double)
75 { 75 {
76 // Fill G4MT_parent with theParentNucleus (s 76 // Fill G4MT_parent with theParentNucleus (stored by SetParent in ctor)
77 CheckAndFillParent(); 77 CheckAndFillParent();
78 78
79 // Set up final state 79 // Set up final state
80 // parentParticle is set at rest here becaus 80 // parentParticle is set at rest here because boost with correct momentum
81 // is done later 81 // is done later
82 G4LorentzVector atRest(G4MT_parent->GetPDGMa 82 G4LorentzVector atRest(G4MT_parent->GetPDGMass(),
83 G4ThreeVector(0.,0.,0 83 G4ThreeVector(0.,0.,0.) );
84 G4DynamicParticle parentParticle(G4MT_parent 84 G4DynamicParticle parentParticle(G4MT_parent, atRest);
85 G4DecayProducts* products = new G4DecayProdu 85 G4DecayProducts* products = new G4DecayProducts(parentParticle);
86 86
87 // Generate LLNL code for parent nucleus 87 // Generate LLNL code for parent nucleus
88 G4int code = 1000*G4MT_parent->GetAtomicNumb 88 G4int code = 1000*G4MT_parent->GetAtomicNumber() +
89 G4MT_parent->GetAtomicMass 89 G4MT_parent->GetAtomicMass();
90 90
91 // Let G4fissionEvent do the decay 91 // Let G4fissionEvent do the decay
92 // Argument 2 : time, passed through to set 92 // Argument 2 : time, passed through to set time of secondary
93 // Argument 3 : nubar, when set to -1, selec 93 // Argument 3 : nubar, when set to -1, selects spontaneous fission
94 // Argument 4 : energy used in Watt spectrum 94 // Argument 4 : energy used in Watt spectrum
95 G4fissionEvent aFission(code, 10.0, -1, 0.); 95 G4fissionEvent aFission(code, 10.0, -1, 0.);
96 G4int nNeut = aFission.getNeutronNu(); 96 G4int nNeut = aFission.getNeutronNu();
97 G4int nGam = aFission.getPhotonNu(); 97 G4int nGam = aFission.getPhotonNu();
98 98
99 G4DynamicParticle* dynPart = 0; 99 G4DynamicParticle* dynPart = 0;
100 G4ThreeVector direction(0.,0.,0.); 100 G4ThreeVector direction(0.,0.,0.);
101 G4double KE = 0.; // energy from generator 101 G4double KE = 0.; // energy from generator is in MeV
102 102
103 if (nNeut > 0) { 103 if (nNeut > 0) {
104 // Put neutrons on the stack 104 // Put neutrons on the stack
105 for (G4int i = 0; i < nNeut; i++) { 105 for (G4int i = 0; i < nNeut; i++) {
106 KE = aFission.getNeutronEnergy(i); 106 KE = aFission.getNeutronEnergy(i);
107 direction.setX(aFission.getNeutronDircos 107 direction.setX(aFission.getNeutronDircosu(i) );
108 direction.setY(aFission.getNeutronDircos 108 direction.setY(aFission.getNeutronDircosv(i) );
109 direction.setZ(aFission.getNeutronDircos 109 direction.setZ(aFission.getNeutronDircosw(i) );
110 110
111 dynPart = new G4DynamicParticle(G4Neutro 111 dynPart = new G4DynamicParticle(G4Neutron::Neutron(), direction, KE);
112 112
113 // Not needed - time comes from parent t 113 // Not needed - time comes from parent track
114 // dynPart->SetProperTime(aFission.getNe 114 // dynPart->SetProperTime(aFission.getNeutronAge(i) );
115 115
116 products->PushProducts(dynPart); 116 products->PushProducts(dynPart);
117 } 117 }
118 118
119 // Put gammas on the stack 119 // Put gammas on the stack
120 for (G4int i = 0; i < nGam; i++) { 120 for (G4int i = 0; i < nGam; i++) {
121 KE = aFission.getPhotonEnergy(i); 121 KE = aFission.getPhotonEnergy(i);
122 direction.setX(aFission.getPhotonDircosu 122 direction.setX(aFission.getPhotonDircosu(i) );
123 direction.setY(aFission.getPhotonDircosv 123 direction.setY(aFission.getPhotonDircosv(i) );
124 direction.setZ(aFission.getPhotonDircosw 124 direction.setZ(aFission.getPhotonDircosw(i) );
125 125
126 dynPart = new G4DynamicParticle(G4Gamma: 126 dynPart = new G4DynamicParticle(G4Gamma::Gamma(), direction, KE);
127 127
128 // Not needed - time comes from parent t 128 // Not needed - time comes from parent track
129 // dynPart->SetProperTime(aFission.getPh 129 // dynPart->SetProperTime(aFission.getPhotonAge(i) );
130 130
131 products->PushProducts(dynPart); 131 products->PushProducts(dynPart);
132 // No residual nucleus in this model 132 // No residual nucleus in this model
133 } 133 }
134 134
135 } else { 135 } else {
136 // No data for this isotope, return parent 136 // No data for this isotope, return parent nucleus for now
137 // G4cout << " No fission data for this iso 137 // G4cout << " No fission data for this isotope " << G4endl;
138 G4DynamicParticle* parent = 138 G4DynamicParticle* parent =
139 new G4DynamicParticle(G4MT_parent, G4Thr 139 new G4DynamicParticle(G4MT_parent, G4ThreeVector(0.,0.,0.) );
140 products->PushProducts(parent); 140 products->PushProducts(parent);
141 } 141 }
142 142
143 // Energy conservation check not valid in th 143 // Energy conservation check not valid in this model
144 144
145 return products; 145 return products;
146 } 146 }
147 147
148 148
149 void G4SFDecay::DumpNuclearInfo() 149 void G4SFDecay::DumpNuclearInfo()
150 { 150 {
151 G4cout << " G4SFDecay for parent nucleus " < 151 G4cout << " G4SFDecay for parent nucleus " << GetParentName() << G4endl;
152 G4cout << " decays to neutrons and gammas, w 152 G4cout << " decays to neutrons and gammas, with branching ratio " << GetBR()
153 << "% and Q value " << transitionQ << 153 << "% and Q value " << transitionQ << G4endl;
154 } 154 }
155 155
156 156