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25 // 25 //
26 // Author: 2021 Alberto Ribon 26 // Author: 2021 Alberto Ribon
27 // 27 //
28 //-------------------------------------------- 28 //----------------------------------------------------------------------------
29 29
30 #include "G4DoubleHyperH4.hh" 30 #include "G4DoubleHyperH4.hh"
31 <<
32 #include "G4DecayTable.hh" <<
33 #include "G4ParticleTable.hh" <<
34 #include "G4PhaseSpaceDecayChannel.hh" <<
35 #include "G4PhysicalConstants.hh" 31 #include "G4PhysicalConstants.hh"
36 #include "G4String.hh" <<
37 #include "G4SystemOfUnits.hh" 32 #include "G4SystemOfUnits.hh"
38 #include "G4Types.hh" << 33 #include "G4ParticleTable.hh"
39 #include "G4VDecayChannel.hh" << 34
>> 35 #include "G4PhaseSpaceDecayChannel.hh"
>> 36 #include "G4DecayTable.hh"
>> 37
>> 38 // ###############################################################
>> 39 // ### DOUBLEHYPERH4 ###
>> 40 // ###############################################################
40 41
41 G4DoubleHyperH4* G4DoubleHyperH4::theInstance 42 G4DoubleHyperH4* G4DoubleHyperH4::theInstance = nullptr;
42 43
43 G4DoubleHyperH4* G4DoubleHyperH4::Definition() << 44
44 { << 45 G4DoubleHyperH4* G4DoubleHyperH4::Definition() {
45 if (theInstance != nullptr) return theInstan << 46 if ( theInstance != nullptr ) return theInstance;
46 const G4String name = "doublehyperH4"; 47 const G4String name = "doublehyperH4";
47 // search in particle table 48 // search in particle table
48 G4ParticleTable* pTable = G4ParticleTable::G 49 G4ParticleTable* pTable = G4ParticleTable::GetParticleTable();
49 auto anInstance = static_cast<G4Ions*>(pTabl << 50 G4Ions* anInstance = static_cast< G4Ions* >( pTable->FindParticle( name ) );
50 if (anInstance == nullptr) { << 51 if ( anInstance == nullptr ) {
51 // create particle 52 // create particle
52 // 53 //
53 // Arguments for constructor are as fol 54 // Arguments for constructor are as follows
54 // name 55 // name mass width charge
55 // 2*spin 56 // 2*spin parity C-conjugation
56 // 2*Isospin 2 57 // 2*Isospin 2*Isospin3 G-parity
57 // type lept 58 // type lepton number baryon number PDG encoding
58 // stable 59 // stable lifetime decay table
59 // shortlived 60 // shortlived subType anti_encoding
60 // excitation << 61 // excitation
61 <<
62 // clang-format off <<
63 anInstance = new G4Ions( name, 41 62 anInstance = new G4Ions( name, 4106.72*MeV, 2.501e-12*MeV, +1.0*eplus,
64 4, 63 4, +1, 0,
65 0, 64 0, 0, 0,
66 "nucleus", 65 "nucleus", 0, +4, 1020010040,
67 false, 66 false, 0.2631*ns, nullptr,
68 false, "static", 67 false, "static", -1020010040,
69 0.0, 0 68 0.0, 0 );
70 // clang-format on <<
71 <<
72 // Magnetic Moment 69 // Magnetic Moment
73 G4double mN = eplus * hbar_Planck / 2.0 / << 70 G4double mN = eplus*hbar_Planck/2.0/(proton_mass_c2 /c_squared);
74 anInstance->SetPDGMagneticMoment(2.9789624 << 71 anInstance->SetPDGMagneticMoment( 2.97896248 * mN );
75 72
76 // create Decay Table << 73 // create Decay Table
77 auto table = new G4DecayTable; << 74 G4DecayTable* table = new G4DecayTable;
78 // create decay channels 75 // create decay channels
79 const G4double half_br_lambda_to_p_pim = 0 << 76 const G4double half_br_lambda_to_p_pim = 0.5*0.639;
80 const G4double half_br_lambda_to_n_piz = 0 << 77 const G4double half_br_lambda_to_n_piz = 0.5*0.358;
81 auto mode = new G4VDecayChannel*[4]; << 78 G4VDecayChannel** mode = new G4VDecayChannel*[4];
82 // lambda -> proton + pi- , with 50% proba 79 // lambda -> proton + pi- , with 50% probability of capturing the proton
83 mode[0] = new G4PhaseSpaceDecayChannel("do << 80 mode[0] = new G4PhaseSpaceDecayChannel( "doublehyperH4", half_br_lambda_to_p_pim, 3,
84 "hy << 81 "hypertriton", "proton", "pi-" );
85 mode[1] = new G4PhaseSpaceDecayChannel("do << 82 mode[1] = new G4PhaseSpaceDecayChannel( "doublehyperH4", half_br_lambda_to_p_pim, 2,
86 "hy << 83 "hyperalpha", "pi-" );
87 // lambda -> neutron + pi0 , with 50% prob 84 // lambda -> neutron + pi0 , with 50% probability of capturing the neutron
88 mode[2] = new G4PhaseSpaceDecayChannel("do << 85 mode[2] = new G4PhaseSpaceDecayChannel( "doublehyperH4", half_br_lambda_to_n_piz, 3,
89 "hy << 86 "hypertriton", "neutron", "pi0" );
90 mode[3] = << 87 mode[3] = new G4PhaseSpaceDecayChannel( "doublehyperH4", half_br_lambda_to_n_piz, 2,
91 new G4PhaseSpaceDecayChannel("doublehype << 88 "hyperH4", "pi0" );
92 for (G4int index = 0; index < 4; ++index) << 89 for ( G4int index = 0; index < 4; ++index ) table->Insert( mode[index] );
93 table->Insert(mode[index]); << 90 delete [] mode;
94 delete[] mode; << 91 anInstance->SetDecayTable( table );
95 anInstance->SetDecayTable(table); <<
96 } 92 }
97 theInstance = static_cast<G4DoubleHyperH4*>( << 93 theInstance = static_cast< G4DoubleHyperH4* >( anInstance );
98 return theInstance; 94 return theInstance;
99 } 95 }
100 96
101 G4DoubleHyperH4* G4DoubleHyperH4::DoubleHyperH << 97
102 { << 98 G4DoubleHyperH4* G4DoubleHyperH4::DoubleHyperH4Definition() {
103 return Definition(); 99 return Definition();
104 } 100 }
105 101
106 G4DoubleHyperH4* G4DoubleHyperH4::DoubleHyperH << 102
107 { << 103 G4DoubleHyperH4* G4DoubleHyperH4::DoubleHyperH4() {
108 return Definition(); 104 return Definition();
109 } 105 }
110 106