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1 // 1 //
2 // ******************************************* 2 // ********************************************************************
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4 // * 4 // * *
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17 // * 17 // * *
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 // $Id: G4AntiNeutron.cc,v 1.21 2007/03/11 07:17:34 kurasige Exp $
>> 28 // GEANT4 tag $Name: geant4-09-01 $
>> 29 //
>> 30 //
26 // ------------------------------------------- 31 // ----------------------------------------------------------------------
27 // GEANT 4 class implementation file 32 // GEANT 4 class implementation file
28 // 33 //
29 // History: first implementation, based o 34 // History: first implementation, based on object model of
30 // 4th April 1996, G.Cosmo 35 // 4th April 1996, G.Cosmo
31 // H.Kurashige 7 July 36 // H.Kurashige 7 July 1996
32 // ******************************************* 37 // **********************************************************************
33 // New impelemenataion as an utility class M 38 // New impelemenataion as an utility class M.Asai, 26 July 2004
34 // ------------------------------------------- 39 // ----------------------------------------------------------------------
35 40
36 #include "G4AntiNeutron.hh" 41 #include "G4AntiNeutron.hh"
37 <<
38 #include "G4DecayTable.hh" <<
39 #include "G4NeutronBetaDecayChannel.hh" <<
40 #include "G4ParticleTable.hh" 42 #include "G4ParticleTable.hh"
41 #include "G4PhysicalConstants.hh" <<
42 #include "G4String.hh" <<
43 #include "G4SystemOfUnits.hh" <<
44 #include "G4Types.hh" <<
45 #include "G4VDecayChannel.hh" <<
46 43
47 G4AntiNeutron* G4AntiNeutron::theInstance = nu << 44 // ######################################################################
>> 45 // ### ANTI NEUTRON ###
>> 46 // ######################################################################
>> 47 G4AntiNeutron* G4AntiNeutron::theInstance = 0;
48 48
49 G4AntiNeutron* G4AntiNeutron::Definition() 49 G4AntiNeutron* G4AntiNeutron::Definition()
50 { 50 {
51 if (theInstance != nullptr) return theInstan << 51 if (theInstance !=0) return theInstance;
52 const G4String name = "anti_neutron"; 52 const G4String name = "anti_neutron";
53 // search in particle table] 53 // search in particle table]
54 G4ParticleTable* pTable = G4ParticleTable::G 54 G4ParticleTable* pTable = G4ParticleTable::GetParticleTable();
55 G4ParticleDefinition* anInstance = pTable->F 55 G4ParticleDefinition* anInstance = pTable->FindParticle(name);
56 if (anInstance == nullptr) { << 56 if (anInstance ==0)
57 // create particle << 57 {
58 // << 58 // create particle
59 // Arguments for constructor are as fol << 59 //
60 // name mass << 60 // Arguments for constructor are as follows
61 // 2*spin parity C- << 61 // name mass width charge
62 // 2*Isospin 2*Isospin3 << 62 // 2*spin parity C-conjugation
63 // type lepton number ba << 63 // 2*Isospin 2*Isospin3 G-parity
64 // stable lifetime << 64 // type lepton number baryon number PDG encoding
65 // shortlived subType << 65 // stable lifetime decay table
66 // use constants in CLHEP << 66 // shortlived subType anti_encoding
67 // static const double neutron_mass_c2 = << 67 anInstance = new G4ParticleDefinition(
68 // clang-format off << 68 name, 0.93956563*GeV, 7.432e-28*GeV, 0.0,
69 anInstance = new G4ParticleDefinition( <<
70 name, neutron_mass_c2, 7.478e <<
71 1, +1, 0, 69 1, +1, 0,
72 1, +1, 0, 70 1, +1, 0,
73 "baryon", 0, - 71 "baryon", 0, -1, -2112,
74 false, 880.2*second, nullptr, << 72 true, -1.0, NULL,
75 false, "nucleon", 211 << 73 false, "nucleon"
76 ); 74 );
77 // clang-format on <<
78 <<
79 // Magnetic Moment 75 // Magnetic Moment
80 G4double mN = eplus * hbar_Planck / 2. / ( << 76 G4double mN = eplus*hbar_Planck/2./(proton_mass_c2 /c_squared);
81 anInstance->SetPDGMagneticMoment(1.9130427 << 77 anInstance->SetPDGMagneticMoment( 1.9130427 * mN);
82 // create Decay Table <<
83 auto table = new G4DecayTable(); <<
84 // create a decay channel <<
85 G4VDecayChannel* mode = new G4NeutronBetaD <<
86 table->Insert(mode); <<
87 anInstance->SetDecayTable(table); <<
88 } 78 }
89 theInstance = static_cast<G4AntiNeutron*>(an << 79 theInstance = reinterpret_cast<G4AntiNeutron*>(anInstance);
90 return theInstance; 80 return theInstance;
91 } 81 }
92 82
93 G4AntiNeutron* G4AntiNeutron::AntiNeutronDefin << 83 G4AntiNeutron* G4AntiNeutron::AntiNeutronDefinition()
94 { 84 {
95 return Definition(); 85 return Definition();
96 } 86 }
97 87
98 G4AntiNeutron* G4AntiNeutron::AntiNeutron() << 88 G4AntiNeutron* G4AntiNeutron::AntiNeutron()
99 { 89 {
100 return Definition(); 90 return Definition();
101 } 91 }
>> 92
>> 93
102 94