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1 // 1 //
2 // ******************************************* 2 // ********************************************************************
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4 // * 4 // * *
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24 // ******************************************* 24 // ********************************************************************
25 // 25 //
>> 26 //
>> 27 // $Id: G4Lambda.cc 67971 2013-03-13 10:13:24Z gcosmo $
>> 28 //
>> 29 //
26 // ------------------------------------------- 30 // ----------------------------------------------------------------------
27 // GEANT 4 class implementation file 31 // GEANT 4 class implementation file
28 // 32 //
29 // History: first implementation, based o 33 // History: first implementation, based on object model of
30 // 4th April 1996, G.Cosmo 34 // 4th April 1996, G.Cosmo
31 // ******************************************* 35 // **********************************************************************
32 // New impelemenataion as an utility class M 36 // New impelemenataion as an utility class M.Asai, 26 July 2004
33 // ------------------------------------------- 37 // ----------------------------------------------------------------------
34 38
35 #include "G4Lambda.hh" 39 #include "G4Lambda.hh"
36 <<
37 #include "G4DecayTable.hh" <<
38 #include "G4ParticleTable.hh" <<
39 #include "G4PhaseSpaceDecayChannel.hh" <<
40 #include "G4PhysicalConstants.hh" 40 #include "G4PhysicalConstants.hh"
41 #include "G4String.hh" <<
42 #include "G4SystemOfUnits.hh" 41 #include "G4SystemOfUnits.hh"
43 #include "G4Types.hh" << 42 #include "G4ParticleTable.hh"
44 #include "G4VDecayChannel.hh" << 43
>> 44 #include "G4PhaseSpaceDecayChannel.hh"
>> 45 #include "G4DecayTable.hh"
>> 46
>> 47 // ######################################################################
>> 48 // ### Lambda ###
>> 49 // ######################################################################
45 50
46 G4Lambda* G4Lambda::theInstance = nullptr; << 51 G4Lambda* G4Lambda::theInstance = 0;
47 52
48 G4Lambda* G4Lambda::Definition() 53 G4Lambda* G4Lambda::Definition()
49 { 54 {
50 if (theInstance != nullptr) return theInstan << 55 if (theInstance !=0) return theInstance;
51 const G4String name = "lambda"; 56 const G4String name = "lambda";
52 // search in particle table] 57 // search in particle table]
53 G4ParticleTable* pTable = G4ParticleTable::G 58 G4ParticleTable* pTable = G4ParticleTable::GetParticleTable();
54 G4ParticleDefinition* anInstance = pTable->F 59 G4ParticleDefinition* anInstance = pTable->FindParticle(name);
55 if (anInstance == nullptr) { << 60 if (anInstance ==0)
56 // create particle << 61 {
57 // << 62 // create particle
58 // Arguments for constructor are as fol << 63 //
59 // name mass << 64 // Arguments for constructor are as follows
60 // 2*spin parity C- << 65 // name mass width charge
61 // 2*Isospin 2*Isospin3 << 66 // 2*spin parity C-conjugation
62 // type lepton number ba << 67 // 2*Isospin 2*Isospin3 G-parity
63 // stable lifetime << 68 // type lepton number baryon number PDG encoding
64 // shortlived subType << 69 // stable lifetime decay table
65 << 70 // shortlived subType anti_encoding
66 // clang-format off << 71
67 anInstance = new G4ParticleDefinition( 72 anInstance = new G4ParticleDefinition(
68 name, 1.115683*GeV, 2.501 73 name, 1.115683*GeV, 2.501e-12*MeV, 0.0,
69 1, +1, 74 1, +1, 0,
70 0, 0, 75 0, 0, 0,
71 "baryon", 0, 76 "baryon", 0, +1, 3122,
72 false, 0.2631*ns, << 77 false, 0.2631*ns, NULL,
73 false, "lambda"); 78 false, "lambda");
74 // clang-format on << 79
75 <<
76 // Magnetic Moment 80 // Magnetic Moment
77 G4double mN = eplus * hbar_Planck / 2. / ( << 81 G4double mN = eplus*hbar_Planck/2./(proton_mass_c2 /c_squared);
78 anInstance->SetPDGMagneticMoment(-0.613 * << 82 anInstance->SetPDGMagneticMoment( -0.613 * mN);
79 << 83
80 // create Decay Table << 84 //create Decay Table
81 auto table = new G4DecayTable(); << 85 G4DecayTable* table = new G4DecayTable();
82 << 86
83 // create decay channels << 87 // create decay channels
84 auto mode = new G4VDecayChannel*[2]; << 88 G4VDecayChannel** mode = new G4VDecayChannel*[2];
85 // lambda -> proton + pi- 89 // lambda -> proton + pi-
86 mode[0] = new G4PhaseSpaceDecayChannel("la << 90 mode[0] = new G4PhaseSpaceDecayChannel("lambda",0.639,2,"proton","pi-");
87 // lambda -> neutron + pi0 91 // lambda -> neutron + pi0
88 mode[1] = new G4PhaseSpaceDecayChannel("la << 92 mode[1] = new G4PhaseSpaceDecayChannel("lambda",0.358,2,"neutron","pi0");
89 << 93
90 for (G4int index = 0; index < 2; index++) << 94 for (G4int index=0; index <2; index++ ) table->Insert(mode[index]);
91 table->Insert(mode[index]); << 95 delete [] mode;
92 delete[] mode; << 96
93 <<
94 anInstance->SetDecayTable(table); 97 anInstance->SetDecayTable(table);
95 } 98 }
96 theInstance = static_cast<G4Lambda*>(anInsta << 99 theInstance = reinterpret_cast<G4Lambda*>(anInstance);
97 return theInstance; 100 return theInstance;
98 } 101 }
99 102
100 G4Lambda* G4Lambda::LambdaDefinition() << 103 G4Lambda* G4Lambda::LambdaDefinition()
101 { << 104 {
102 return Definition(); 105 return Definition();
103 } 106 }
104 107
105 G4Lambda* G4Lambda::Lambda() << 108 G4Lambda* G4Lambda::Lambda()
106 { << 109 {
107 return Definition(); 110 return Definition();
108 } 111 }
>> 112
>> 113
109 114