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1 // 1 //
2 // ******************************************* 2 // ********************************************************************
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18 // * This code implementation is the result 18 // * This code implementation is the result of the scientific and *
19 // * technical work of the GEANT4 collaboratio 19 // * technical work of the GEANT4 collaboration. *
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24 // ******************************************* 24 // ********************************************************************
25 // 25 //
>> 26 //
>> 27 //
>> 28 //
26 // ------------------------------------------- 29 // ----------------------------------------------------------------------
27 // GEANT 4 class implementation file 30 // GEANT 4 class implementation file
28 // 31 //
29 // History: first implementation, based o 32 // History: first implementation, based on object model of
30 // 4th April 1996, G.Cosmo 33 // 4th April 1996, G.Cosmo
31 // H.Kurashige 7 July 34 // H.Kurashige 7 July 1996
32 // ******************************************* 35 // **********************************************************************
33 // New impelemenataion as an utility class M 36 // New impelemenataion as an utility class M.Asai, 26 July 2004
34 // ------------------------------------------- 37 // ----------------------------------------------------------------------
35 38
36 #include "G4AntiNeutron.hh" 39 #include "G4AntiNeutron.hh"
37 <<
38 #include "G4DecayTable.hh" <<
39 #include "G4NeutronBetaDecayChannel.hh" <<
40 #include "G4ParticleTable.hh" <<
41 #include "G4PhysicalConstants.hh" 40 #include "G4PhysicalConstants.hh"
42 #include "G4String.hh" <<
43 #include "G4SystemOfUnits.hh" 41 #include "G4SystemOfUnits.hh"
44 #include "G4Types.hh" << 42 #include "G4ParticleTable.hh"
45 #include "G4VDecayChannel.hh" <<
46 43
47 G4AntiNeutron* G4AntiNeutron::theInstance = nu << 44 #include "G4NeutronBetaDecayChannel.hh"
>> 45 #include "G4DecayTable.hh"
>> 46
>> 47 // ######################################################################
>> 48 // ### ANTI NEUTRON ###
>> 49 // ######################################################################
>> 50 G4AntiNeutron* G4AntiNeutron::theInstance = 0;
48 51
49 G4AntiNeutron* G4AntiNeutron::Definition() 52 G4AntiNeutron* G4AntiNeutron::Definition()
50 { 53 {
51 if (theInstance != nullptr) return theInstan << 54 if (theInstance !=0) return theInstance;
52 const G4String name = "anti_neutron"; 55 const G4String name = "anti_neutron";
53 // search in particle table] 56 // search in particle table]
54 G4ParticleTable* pTable = G4ParticleTable::G 57 G4ParticleTable* pTable = G4ParticleTable::GetParticleTable();
55 G4ParticleDefinition* anInstance = pTable->F 58 G4ParticleDefinition* anInstance = pTable->FindParticle(name);
56 if (anInstance == nullptr) { << 59 if (anInstance ==0)
57 // create particle << 60 {
58 // << 61 // create particle
59 // Arguments for constructor are as fol << 62 //
60 // name mass << 63 // Arguments for constructor are as follows
61 // 2*spin parity C- << 64 // name mass width charge
62 // 2*Isospin 2*Isospin3 << 65 // 2*spin parity C-conjugation
63 // type lepton number ba << 66 // 2*Isospin 2*Isospin3 G-parity
64 // stable lifetime << 67 // type lepton number baryon number PDG encoding
65 // shortlived subType << 68 // stable lifetime decay table
66 // use constants in CLHEP << 69 // shortlived subType anti_encoding
67 // static const double neutron_mass_c2 = << 70 // use constants in CLHEP
68 // clang-format off << 71 // static const double neutron_mass_c2 = 939.56563 * MeV;
>> 72
69 anInstance = new G4ParticleDefinition( 73 anInstance = new G4ParticleDefinition(
70 name, neutron_mass_c2, 7.478e 74 name, neutron_mass_c2, 7.478e-28*GeV, 0.0,
71 1, +1, 0, 75 1, +1, 0,
72 1, +1, 0, 76 1, +1, 0,
73 "baryon", 0, - 77 "baryon", 0, -1, -2112,
74 false, 880.2*second, nullptr, << 78 true, 880.2*second, NULL,
75 false, "nucleon", 211 79 false, "nucleon", 2112
76 ); 80 );
77 // clang-format on <<
78 <<
79 // Magnetic Moment 81 // Magnetic Moment
80 G4double mN = eplus * hbar_Planck / 2. / ( << 82 G4double mN = eplus*hbar_Planck/2./(proton_mass_c2 /c_squared);
81 anInstance->SetPDGMagneticMoment(1.9130427 << 83 anInstance->SetPDGMagneticMoment( 1.9130427 * mN);
82 // create Decay Table << 84 //create Decay Table
83 auto table = new G4DecayTable(); << 85 G4DecayTable* table = new G4DecayTable();
84 // create a decay channel 86 // create a decay channel
85 G4VDecayChannel* mode = new G4NeutronBetaD << 87 G4VDecayChannel* mode = new G4NeutronBetaDecayChannel("anti_neutron",1.00);
86 table->Insert(mode); 88 table->Insert(mode);
87 anInstance->SetDecayTable(table); 89 anInstance->SetDecayTable(table);
>> 90
88 } 91 }
89 theInstance = static_cast<G4AntiNeutron*>(an << 92 theInstance = reinterpret_cast<G4AntiNeutron*>(anInstance);
90 return theInstance; 93 return theInstance;
91 } 94 }
92 95
93 G4AntiNeutron* G4AntiNeutron::AntiNeutronDefin << 96 G4AntiNeutron* G4AntiNeutron::AntiNeutronDefinition()
94 { 97 {
95 return Definition(); 98 return Definition();
96 } 99 }
97 100
98 G4AntiNeutron* G4AntiNeutron::AntiNeutron() << 101 G4AntiNeutron* G4AntiNeutron::AntiNeutron()
99 { 102 {
100 return Definition(); 103 return Definition();
101 } 104 }
>> 105
>> 106
102 107