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1 // 1 //
2 // ******************************************* 2 // ********************************************************************
3 // * License and Disclaimer 3 // * License and Disclaimer *
4 // * 4 // * *
5 // * The Geant4 software is copyright of th 5 // * The Geant4 software is copyright of the Copyright Holders of *
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10 // * 10 // * *
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15 // * use. Please see the license in the file 15 // * use. Please see the license in the file LICENSE and URL above *
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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. *
20 // * By using, copying, modifying or distri 20 // * By using, copying, modifying or distributing the software (or *
21 // * any work based on the software) you ag 21 // * any work based on the software) you agree to acknowledge its *
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24 // ******************************************* 24 // ********************************************************************
25 // 25 //
26 // ------------------------------------------- 26 // ----------------------------------------------------------------------
27 // GEANT 4 class implementation file 27 // GEANT 4 class implementation file
28 // 28 //
29 // History: first implementation, based o 29 // History: first implementation, based on object model of
30 // 4th April 1996, G.Cosmo 30 // 4th April 1996, G.Cosmo
31 // ******************************************* 31 // **********************************************************************
32 // New impelemenataion as an utility class M 32 // New impelemenataion as an utility class M.Asai, 26 July 2004
33 // ------------------------------------------- 33 // ----------------------------------------------------------------------
34 34
35 #include "G4PionPlus.hh" 35 #include "G4PionPlus.hh"
36 36
37 #include "G4DecayTable.hh" 37 #include "G4DecayTable.hh"
38 #include "G4ParticleTable.hh" 38 #include "G4ParticleTable.hh"
39 #include "G4PhaseSpaceDecayChannel.hh" 39 #include "G4PhaseSpaceDecayChannel.hh"
40 #include "G4String.hh" 40 #include "G4String.hh"
41 #include "G4SystemOfUnits.hh" 41 #include "G4SystemOfUnits.hh"
42 #include "G4VDecayChannel.hh" 42 #include "G4VDecayChannel.hh"
43 43
44 G4PionPlus* G4PionPlus::theInstance = nullptr; 44 G4PionPlus* G4PionPlus::theInstance = nullptr;
45 45
46 G4PionPlus* G4PionPlus::Definition() 46 G4PionPlus* G4PionPlus::Definition()
47 { 47 {
48 if (theInstance != nullptr) return theInstan 48 if (theInstance != nullptr) return theInstance;
49 const G4String name = "pi+"; 49 const G4String name = "pi+";
50 // search in particle table] 50 // search in particle table]
51 G4ParticleTable* pTable = G4ParticleTable::G 51 G4ParticleTable* pTable = G4ParticleTable::GetParticleTable();
52 G4ParticleDefinition* anInstance = pTable->F 52 G4ParticleDefinition* anInstance = pTable->FindParticle(name);
53 if (anInstance == nullptr) { 53 if (anInstance == nullptr) {
54 // create particle 54 // create particle
55 // 55 //
56 // Arguments for constructor are as fol 56 // Arguments for constructor are as follows
57 // name mass 57 // name mass width charge
58 // 2*spin parity C- 58 // 2*spin parity C-conjugation
59 // 2*Isospin 2*Isospin3 59 // 2*Isospin 2*Isospin3 G-parity
60 // type lepton number ba 60 // type lepton number baryon number PDG encoding
61 // stable lifetime 61 // stable lifetime decay table
62 // shortlived subType 62 // shortlived subType anti_encoding
63 63
64 // clang-format off 64 // clang-format off
65 anInstance = new G4ParticleDefinition( 65 anInstance = new G4ParticleDefinition(
66 name, 0.1395701*GeV, 2.528 66 name, 0.1395701*GeV, 2.5284e-14*MeV, +1.*eplus,
67 0, -1, 67 0, -1, 0,
68 2, +2, 68 2, +2, -1,
69 "meson", 0, 69 "meson", 0, 0, 211,
70 false, 26.033*ns, 70 false, 26.033*ns, nullptr,
71 false, "pi"); 71 false, "pi");
72 // clang-format on 72 // clang-format on
73 73
74 // create Decay Table 74 // create Decay Table
75 auto table = new G4DecayTable(); 75 auto table = new G4DecayTable();
76 76
77 // create a decay channel 77 // create a decay channel
78 // pi+ -> mu+ + nu_mu 78 // pi+ -> mu+ + nu_mu
79 G4VDecayChannel* mode = new G4PhaseSpaceDe 79 G4VDecayChannel* mode = new G4PhaseSpaceDecayChannel("pi+", 1.00, 2, "mu+", "nu_mu");
80 table->Insert(mode); 80 table->Insert(mode);
81 81
82 anInstance->SetDecayTable(table); 82 anInstance->SetDecayTable(table);
83 } 83 }
84 theInstance = static_cast<G4PionPlus*>(anIns 84 theInstance = static_cast<G4PionPlus*>(anInstance);
85 return theInstance; 85 return theInstance;
86 } 86 }
87 87
88 G4PionPlus* G4PionPlus::PionPlusDefinition() 88 G4PionPlus* G4PionPlus::PionPlusDefinition()
89 { 89 {
90 return Definition(); 90 return Definition();
91 } 91 }
92 92
93 G4PionPlus* G4PionPlus::PionPlus() 93 G4PionPlus* G4PionPlus::PionPlus()
94 { 94 {
95 return Definition(); 95 return Definition();
96 } 96 }
97 97