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25 // 25 //
26 // Author: 2021 Alberto Ribon 26 // Author: 2021 Alberto Ribon
27 // 27 //
28 //-------------------------------------------- 28 //----------------------------------------------------------------------------
29 29
30 #include "G4AntiDoubleHyperDoubleNeutron.hh" 30 #include "G4AntiDoubleHyperDoubleNeutron.hh"
31 31
32 #include "G4DecayTable.hh" 32 #include "G4DecayTable.hh"
33 #include "G4ParticleTable.hh" 33 #include "G4ParticleTable.hh"
34 #include "G4PhaseSpaceDecayChannel.hh" 34 #include "G4PhaseSpaceDecayChannel.hh"
35 #include "G4PhysicalConstants.hh" 35 #include "G4PhysicalConstants.hh"
36 #include "G4String.hh" 36 #include "G4String.hh"
37 #include "G4SystemOfUnits.hh" 37 #include "G4SystemOfUnits.hh"
38 #include "G4Types.hh" 38 #include "G4Types.hh"
39 #include "G4VDecayChannel.hh" 39 #include "G4VDecayChannel.hh"
40 40
41 G4AntiDoubleHyperDoubleNeutron* G4AntiDoubleHy 41 G4AntiDoubleHyperDoubleNeutron* G4AntiDoubleHyperDoubleNeutron::theInstance = nullptr;
42 42
43 G4AntiDoubleHyperDoubleNeutron* G4AntiDoubleHy 43 G4AntiDoubleHyperDoubleNeutron* G4AntiDoubleHyperDoubleNeutron::Definition()
44 { 44 {
45 if (theInstance != nullptr) return theInstan 45 if (theInstance != nullptr) return theInstance;
46 const G4String name = "anti_doublehyperdoubl 46 const G4String name = "anti_doublehyperdoubleneutron";
47 // search in particle table 47 // search in particle table
48 G4ParticleTable* pTable = G4ParticleTable::G 48 G4ParticleTable* pTable = G4ParticleTable::GetParticleTable();
49 auto anInstance = static_cast<G4Ions*>(pTabl 49 auto anInstance = static_cast<G4Ions*>(pTable->FindParticle(name));
50 if (anInstance == nullptr) { 50 if (anInstance == nullptr) {
51 // create particle 51 // create particle
52 // 52 //
53 // Arguments for constructor are as fol 53 // Arguments for constructor are as follows
54 // name 54 // name mass width charge
55 // 2*spin 55 // 2*spin parity C-conjugation
56 // 2*Isospin 2 56 // 2*Isospin 2*Isospin3 G-parity
57 // type lept 57 // type lepton number baryon number PDG encoding
58 // stable 58 // stable lifetime decay table
59 // shortlived 59 // shortlived subType anti_encoding
60 // excitation 60 // excitation
61 61
62 // clang-format off 62 // clang-format off
63 anInstance = new G4Ions( name, 41 63 anInstance = new G4Ions( name, 4110.24*MeV, 2.501e-12*MeV, 0.0*eplus,
64 0, 64 0, +1, 0,
65 0, 65 0, 0, 0,
66 "anti_nucleus", 66 "anti_nucleus", 0, -4, -1020000040,
67 false, 67 false, 0.2631*ns, nullptr,
68 false, "static", 68 false, "static", 1020000040,
69 0.0, 0 69 0.0, 0 );
70 // clang-format on 70 // clang-format on
71 71
72 // Magnetic Moment 72 // Magnetic Moment
73 G4double mN = eplus * hbar_Planck / 2.0 / 73 G4double mN = eplus * hbar_Planck / 2.0 / (proton_mass_c2 / c_squared);
74 anInstance->SetPDGMagneticMoment(2.9789624 74 anInstance->SetPDGMagneticMoment(2.97896248 * mN);
75 75
76 // create Decay Table 76 // create Decay Table
77 auto table = new G4DecayTable; 77 auto table = new G4DecayTable;
78 // create decay channels 78 // create decay channels
79 const G4double half_br_lambda_to_p_pim = 0 79 const G4double half_br_lambda_to_p_pim = 0.5 * 0.639;
80 const G4double br_lambda_to_n_piz = 0.358; 80 const G4double br_lambda_to_n_piz = 0.358;
81 auto mode = new G4VDecayChannel*[3]; 81 auto mode = new G4VDecayChannel*[3];
82 // anti_lambda -> anti_proton + pi+ , with 82 // anti_lambda -> anti_proton + pi+ , with 50% probability of capturing the anti_proton
83 mode[0] = new G4PhaseSpaceDecayChannel("an 83 mode[0] = new G4PhaseSpaceDecayChannel("anti_doublehyperdoubleneutron", half_br_lambda_to_p_pim,
84 5, 84 5, "anti_neutron", "anti_neutron", "anti_lambda",
85 "an 85 "anti_proton", "pi+");
86 mode[1] = new G4PhaseSpaceDecayChannel("an 86 mode[1] = new G4PhaseSpaceDecayChannel("anti_doublehyperdoubleneutron", half_br_lambda_to_p_pim,
87 2, 87 2, "anti_hyperH4", "pi+");
88 // anti_lambda -> anti_neutron + pi0 , wit 88 // anti_lambda -> anti_neutron + pi0 , without any possibility of capturing the anti_neutron
89 mode[2] = new G4PhaseSpaceDecayChannel("an 89 mode[2] = new G4PhaseSpaceDecayChannel("anti_doublehyperdoubleneutron", br_lambda_to_n_piz, 5,
90 "an 90 "anti_neutron", "anti_neutron", "anti_lambda",
91 "an 91 "anti_neutron", "pi0");
92 for (G4int index = 0; index < 3; ++index) 92 for (G4int index = 0; index < 3; ++index)
93 table->Insert(mode[index]); 93 table->Insert(mode[index]);
94 delete[] mode; 94 delete[] mode;
95 anInstance->SetDecayTable(table); 95 anInstance->SetDecayTable(table);
96 } 96 }
97 theInstance = static_cast<G4AntiDoubleHyperD 97 theInstance = static_cast<G4AntiDoubleHyperDoubleNeutron*>(anInstance);
98 return theInstance; 98 return theInstance;
99 } 99 }
100 100
101 G4AntiDoubleHyperDoubleNeutron* 101 G4AntiDoubleHyperDoubleNeutron*
102 G4AntiDoubleHyperDoubleNeutron::AntiDoubleHype 102 G4AntiDoubleHyperDoubleNeutron::AntiDoubleHyperDoubleNeutronDefinition()
103 { 103 {
104 return Definition(); 104 return Definition();
105 } 105 }
106 106
107 G4AntiDoubleHyperDoubleNeutron* G4AntiDoubleHy 107 G4AntiDoubleHyperDoubleNeutron* G4AntiDoubleHyperDoubleNeutron::AntiDoubleHyperDoubleNeutron()
108 { 108 {
109 return Definition(); 109 return Definition();
110 } 110 }
111 111